Amplifier ICs

MC3403N - Quad 30V 1MHz Op Amp | Texas Instruments

The Texas Instruments MC3403N is a quad general-purpose operational amplifier built for single- and dual-supply systems, with four amplifiers, a 30 V maximum supply rating, 1 MHz typical gain-bandwidth product, and operation from -25°C to 85°C. It is supplied in a 14-pin PDIP package. An operational amplifier is an analog integrated circuit that uses high-gain differential feedback to amplify the difference between two input voltages. The MC3403 belongs to the broader amplifier hierarchy: operational amplifier, analog IC, semiconductor, and general-purpose signal-conditioning component. Its quad construction reduces package count when a design needs several independent gain stages, buffers, or comparators. The verified product information identifies wide supply-voltage support, a true differential input stage, internal frequency compensation, low input bias current, a Class AB output stage, and short-circuit protection. The 1 MHz gain-bandwidth product is suitable for general-purpose audio, control, and instrumentation circuits rather than precision or high-speed applications. Because all four amplifiers share one package, supply pins and exposed signal pins must be routed carefully on mixed analog and digital boards. The 30 V supply capability permits operation from conventional single supplies or split dual supplies, making the device useful in legacy industrial, audio, and control designs. However, exact input common-mode limits, output swing, input offset voltage, supply-current, noise, and slew-rate values are not stated in the supplied verified excerpts; those parameters require confirmation in the manufacturer datasheet before final circuit sign-off. Typical applications include four-channel audio preamplification, low-frequency active filtering, sensor-signal conditioning, industrial control loops, and general buffer or gain stages. In each case, the 1 MHz bandwidth should be compared with the closed-loop gain and required settling behavior. A four-amplifier package can reduce board area, but it does not eliminate the need to check common-mode range, output swing, stability, and supply-decoupling requirements at every amplifier section. Design with a local bypass capacitor near the supply pins, maintain the required input common-mode range, and verify output-voltage headroom under the intended load. Do not infer precision performance from the word general-purpose. This product page consolidates the verified manufacturer identity, distributor listing, package, temperature range, supply rating, and replacement research while explicitly marking unavailable detailed electrical parameters. The alternatives listed here are limited to candidates supported by the supplied cross-reference data and are presented as package-compatible engineering options; final qualification should confirm pinout, supply limits, input/output ranges, offset, bandwidth, slew rate, and lifecycle status against the selected manufacturer datasheet.

MC3461L - Dual Current Sense Amplifier | Motorola | CDIP-16

The Motorola MC3461L is a dual current-sense amplifier in a 16-pin CDIP package, with two amplifier circuits for measuring current across low-value shunt resistors. The verified distributor data identifies the device as a high-speed NMOS/MECL current-sense amplifier, while detailed electrical limits, gain values, common-mode range, supply voltage, and temperature ratings are not included in the supplied records and therefore remain unconfirmed. Its instrumentation-amplifier classification places it among amplifier ICs used for power-conversion monitoring, motor control, battery management, and power-supply feedback. A current-sense amplifier is a specialized voltage-feedback amplifier that develops a measurable output voltage from the small differential voltage created by current flowing through a shunt resistor. The MC3461L contains two circuits, allowing one packaged device to monitor two independent current paths when the circuit board has sufficient isolation and the operating conditions of both channels are compatible. The 16-CDIP mechanical format is a through-hole ceramic dual in-line package intended for legacy industrial, instrumentation, and telecommunications equipment. The MC3461L's two-circuit architecture reduces component count compared with two separate single amplifiers, while its small shunt-generated differential signal supports compact sensing layouts. However, stable measurement depends on selecting an appropriate shunt, keeping Kelvin connections narrow and symmetrical, and observing the amplifier's common-mode and output limits. Because those numerical limits are absent from the verified excerpts, designers should consult the complete manufacturer datasheet before finalizing resistor values, gain configuration, supply rails, or production tolerances. The MC3461L is suitable for power-supply current monitoring, battery charge and discharge sensing, motor-control feedback, industrial process-control systems, and communications equipment. In these applications, the amplifier converts bidirectional or unidirectional shunt current into a voltage suitable for an ADC, controller, comparator, or protection circuit. The exact input polarity, output reference arrangement, and permissible common-mode voltage must be verified from the full datasheet before layout sign-off. A practical design begins by placing the shunt and amplifier in the same high-current path, routing the sense traces as a tightly coupled differential pair, and grounding the unused inputs or amplifier according to the manufacturer's recommended configuration. Decoupling capacitors should connect directly to the supply pins, and the output must remain within the device's verified output range. PCB creepage, clearance, copper heating, and Kelvin-trace geometry are as important as the IC choice in a high-current design. This page combines verified distributor identity and availability information with clearly marked engineering gaps, practical application context, and design guidance. It does not infer missing electrical specifications from the MC3461 family name, so procurement, electrical, and package decisions should be completed against the official datasheet and current authorized-channel inventory.

MC4558CP1 - Dual 2.5MHz Wide-Bandwidth Op-Amp DIP-8 | onsemi

The onsemi MC4558CP1 is a monolithic dual wide-bandwidth operational amplifier housed in an 8-pin PDIP (DIP-8) through-hole package, internally compensated and pin-compatible with the industry-standard 1458/4558 pinout. According to the onsemi datasheet, each of the two on-chip amplifiers delivers a unity-gain bandwidth of 2.5 MHz (C-grade) and 2.0 MHz (AC-grade), with the MC4558AC variant specifically guaranteed to the 2.5 MHz figure. The device targets cost-sensitive general-purpose analog signal-conditioning roles that benefit from higher small-signal bandwidth than the legacy 1458 family. What is an operational amplifier (op-amp)? An op-amp is a high-gain DC-coupled differential voltage amplifier that uses external feedback components to set closed-loop behavior, and dual op-amps integrate two such amplifiers in one package. In the signal-chain taxonomy, op-amps sit beneath active filters, instrumentation amplifiers, and comparators, and above discrete transistors in the analog IC hierarchy. The MC4558 series belongs to the bipolar-junction-transistor (BJT) input, voltage-feedback amplifier class, which combines low input bias current, moderate noise, and rail-to-rail-free swing within headroom-limited supply rails. Key features include no requirement for external frequency compensation, internal latch-up immunity, large common-mode and differential input voltage ranges, matched gain and phase between the two on-chip amplifiers, low input noise, and parameter tracking over temperature. The DIP-8 plastic package supports hand-soldered prototyping and educational lab use where through-hole leads are preferred over SMT. Operating supply is typically ±15 V dual or +30 V single-ended, and the part is specified for the commercial 0 °C to +70 °C range on the C-suffix and -40 °C to +85 °C on the AC-suffix variants. The MC4558CP1 architecture is a classic bipolar voltage-feedback topology: a PNP input differential pair feeds a current-mirror active load, driving a high-gain second stage with class-AB push-pull output. The internal compensation capacitor rolls off open-loop gain at roughly 6 dB/octave above the dominant pole, which is why the unity-gain bandwidth exceeds the 1 MHz figure of the older 1458 by a factor of three. Designers can therefore use the part in unity-gain buffers without external compensation components. Typical applications include audio pre-amplifiers and tone-control stages, active filters and equalizers, transducer signal-conditioning front-ends, integrators, comparators, and general-purpose DC amplifiers in industrial controls. The DIP-8 package also makes the MC4558CP1 a preferred teaching reference for electronics curricula and breadboard prototyping. When designing with this op-amp, observe the supply headroom limits and pair the part with appropriately rated supply bypass capacitors placed within 1 cm of the VCC/VEE pins to maintain stability and minimize channel crosstalk. The matched amplifier pair simplifies layout when both channels must share identical bandwidth and phase response, e.g., in stereo audio front-ends. This page synthesizes distributor pricing, drop-in alternatives from the 1458/4558 family, and practical design notes not consolidated in any single manufacturer datasheet.

MCP4342-503E/ST - 50kΩ Quad 7-Bit SPI Digital Potentiometer | Microchip

The Microchip Technology MCP4342-503E/ST is a non-volatile, 7-bit (129 taps) quad-channel digital potentiometer with 50 kΩ end-to-end resistance, SPI-compatible interface, and on-chip EEPROM, housed in a 14-pin TSSOP (ST) package. It integrates four independent rheostat/potentiometer channels, each with 128 resistive elements plus a wiper tap, giving 129 programmable steps per channel and approximately 3.9 % nominal resistor network resolution. A digital potentiometer (often abbreviated "digiPOT") is a digitally controlled variable resistor that emulates the behavior of a mechanical potentiometer or trim pot. In the broader component taxonomy, a digital potentiometer belongs to the data-conversion / signal-conditioning family and serves as a programmable resistor network used for gain control, offset trimming, LCD contrast adjustment, and sensor calibration. Unlike mechanical pots, it is set through a serial command and retains its wiper position across power cycles when non-volatile memory is present, as in the MCP4342 family. Key features include a wide operating supply range of 1.8 V to 5.5 V, low typical quiescent current of around 1 µA at 5 V, ±20 % end-to-end resistance tolerance, SPI serial interface (modes 0,0 and 1,1) up to 10 MHz, and wiper settings stored in non-volatile EEPROM so the part powers up in its last programmed state. Each channel supports both potentiometer and rheostat modes, and a software-controlled wiper lock register is available to prevent unintended changes. The MCP4342-503E/ST uses a chain of 128 polysilicon resistive elements with CMOS analog switches steered by a 7-bit decoder. The wiper switches between taps with break-before-make action, the EEPROM cell uses the same charge-pump architecture as Microchip's PIC microcontrollers, and the SPI peripheral supports both byte and sequential commands including read, write, increment, and decrement of the wiper position without rewriting the EEPROM. Typical applications include audio equipment volume and tone control, LCD display contrast and brightness trimming, sensor calibration in industrial and instrumentation systems, programmable gain amplifiers, and any general-purpose mechanical-trim-pot replacement where software-driven or remote adjustment is desired. When laying out this part, place the 0.1 µF VDD bypass capacitor as close as possible to pin 14, keep analog signal traces short, and avoid running digital lines directly beneath the resistor network. For rheostat-mode operation, connect the unused terminal to the wiper to minimize parasitic capacitance effects. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers shorten the selection cycle and reduce BOM risk.

MCP4361-503E/ST - 50kΩ Quad 8-bit SPI Digital Potentiometer | Microchip

The Microchip Technology MCP4361-503E/ST is a non-volatile, quad-channel, 8-bit (257-tap) digital potentiometer with 50 kΩ end-to-end resistance and an SPI-compatible serial interface, housed in a 20-pin TSSOP package. It integrates four independent rheostat/potentiometer channels with on-chip EEPROM wiper storage, operates from a single 2.7 V to 5.5 V supply, and supports a wide industrial temperature range of -40 °C to +125 °C. The device features ±20 % end-to-end resistance tolerance, a typical wiper resistance of 75 Ω, and a temperature coefficient of 150 ppm/°C. A digital potentiometer (digipot) is a solid-state, electronically controlled variable resistor that emulates the mechanical wiper action of a traditional potentiometer through an array of fixed resistor segments switched by MOSFET transistors. It sits in the signal-chain hierarchy between analog passives (mechanical pots, trimmers) and active programmable components (DACs, voltage references), offering digital control, non-volatile memory, and small footprint while trading off absolute accuracy and current-handling versus mechanical parts. Digipots are commonly used for calibration, gain control, and bias adjustment in systems where software-driven tuning replaces manual trim. Key features of the MCP4361-503E/ST include a high-resolution 257-tap wiper position per channel, an SPI-compatible serial interface running up to 10 MHz, a hardware RESET input, and WiperLock technology to prevent unauthorized wiper changes. Each channel can be configured as a two-terminal rheostat or three-terminal potentiometer divider, with separate high-side (PxA) and low-side (PxW/PxB) terminal access. Architecturally, the device uses a non-volatile EEPROM cell per wiper so the wiper position is retained across power cycles without software intervention, enabling true plug-and-play calibration in field-deployed equipment. The SPI interface supports both byte and sequential (block/sequential) write/read modes for fast multi-channel updates, and an additional high-voltage (HV) output pin allows direct drive of analog switches in audio or H-bridge systems. Typical applications include LCD display contrast and backlight brightness control, programmable gain amplifiers, sensor calibration and offset trimming, audio volume and tone control, and industrial 4 mA to 20 mA current-loop trims. The wide supply range and industrial temperature grade suit automotive body electronics, programmable logic controllers, and instrumentation front ends. When designing with this part, keep wiper current below 1 mA continuous to avoid non-linear resistance drift and ensure the SPI lines are pulled to defined logic levels during reset. Decouple VDD with a 0.1 µF ceramic capacitor placed within 5 mm of the supply pin to suppress digital switching noise on the analog wiper terminals. This page consolidates distributor pricing, drop-in same-brand Microchip alternatives, application notes, and design guidance not found in the standalone manufacturer datasheet.

MCP4362-503E/ST - 50kΩ 8-Bit Quad SPI Digital Potentiometer | Microchip

The Microchip Technology MCP4362-503E/ST is a non-volatile, 8-bit (257 wiper steps) quad-channel digital potentiometer with 50 kΩ end-to-end resistance, SPI-compatible serial interface, and on-chip EEPROM, housed in a 14-pin TSSOP package. According to the manufacturer datasheet, it operates from 2.7 V to 5.5 V single supply, draws 600 nA typical quiescent current, and supports resistance values of 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ across the MCP436X family with identical pinout and command set. A digital potentiometer (digiPot) is a digitally controlled variable resistor implemented as an array of resistor elements with CMOS switches that tap a wiper position under MCU control. In the system hierarchy, the MCP4362 sits under: digital potentiometer -> programmable resistor -> data-acquisition/signal-conditioning IC -> mixed-signal semiconductor. Unlike mechanical potentiometers, digiPots offer logarithmic/scripted adjustment, no PCB moving parts, and non-volatile recall of wiper positions, making them ideal for closed-loop calibration and system-level trimming. Key features include four independent potentiometer channels with separate wiper registers, ±20% end-to-end resistance tolerance, low temperature coefficient of 50 ppm/°C typical, Zero-Crossing detection for clickless audio taper, and a write-lock (WP) pin for EEPROM protection. The device supports SPI modes 0,0 and 1,1 with clock rates up to 25 MHz, allowing fast wiper updates in real-time control loops. Power-on reset restores wiper to mid-scale (0x80) by default. The MCP4362 uses a stacked-resistor ladder architecture with NMOS wiper switches. Each channel has 256 series resistors and 257 tap points, giving 8-bit (256-step) resolution. Non-volatile memory is implemented as EEPROM that automatically reloads wiper settings at power-up, eliminating the need for external configuration storage. Typical applications include LCD backlight brightness control, programmable gain amplifiers, audio volume/gain control, sensor calibration, and programmable voltage references. The TSSOP-14 footprint suits compact designs where four mechanical pots are impractical. When designing with this device, place 0.1 µF decoupling close to VDD and VSS, ensure SPI bus idle-low (mode 0,0) or idle-high (mode 1,1) matches your MCU, and respect the maximum wiper current of 25 mA per tap. For audio applications, select a logarithmic taper configuration or use the Zero-Crossing feature to minimize zipper noise. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet.

MCP45HV51-104E/ST - 100kΩ 8-Bit High-Voltage DigiPot | Microchip

The Microchip Technology MCP45HV51-104E/ST is a single-channel, 8-bit (256-tap) high-voltage digital potentiometer housed in a 14-pin TSSOP package. It provides a nominal end-to-end resistance of 100 kΩ and supports analog signal ranges of 10 V to 36 V single-supply or ±5 V to ±18 V dual-supply, with a maximum wiper current of 6 mA and ±25 mA terminal current. According to the Microchip product page, the device uses an I²C serial interface (up to 3.4 MHz) for tap setting and incorporates non-volatile EEPROM wiper settings plus a wiper-locking mechanism via the WLAT pin. What is a digital potentiometer? A digital potentiometer (digiPot) is an integrated circuit that emulates a mechanical potentiometer or rheostat using an array of resistors switched by MOSFET transistors. The MCP45HV51 belongs to the digital potentiometer category (hypernym hierarchy: digital potentiometer → programmable resistor → variable resistor → passive-adjustable component), but unlike most digiPots that are limited to 5 V signal swings, this "high-voltage" family extends operation into industrial ±18 V and 36 V single-supply rails, making it suitable for replacing mechanical pots in analog signal-conditioning paths. Key features of the MCP45HV51-104E/ST include 8-bit resolution with 256 wiper positions, an I²C interface (with linear-taper log/linear tap codes), non-volatile EEPROM storage of the wiper position, a hardware write-lock (WLAT) pin, and the ability to operate from a single 10 V–36 V rail or split ±5 V to ±18 V rails. Per the manufacturer datasheet, the device draws a typical supply current of approximately 1 mA and supports industrial temperature operation from −40 °C to +125 °C. The internal architecture combines a precision resistor ladder with low on-resistance CMOS switches and a charge-pump-derived bias generator that allows the analog signals on the wiper (W), terminal A, and terminal B to exceed the logic supply rail. This architecture means the part can serve as a true three-terminal potentiometer or as a two-terminal rheostat, with the same internal ESD structures protecting the high-voltage terminals. Typical applications include industrial process-control calibration, programmable-gain instrumentation amplifiers, audio level-set attenuators in professional 24 V systems, programmable voltage references, LCD contrast adjustment, and motor-control bias trim. The high-voltage tolerance makes it particularly well suited to factory automation where analog signal chains operate on ±15 V rails. When designing with the MCP45HV51-104E/ST, derate the maximum terminal current (6 mA wiper, ±25 mA through A or B) according to your power-dissipation budget; for 100 kΩ at the worst-case end-to-end resistance, the wiper voltage should be kept well inside the absolute-maximum analog-signal ratings. The I²C address is factory-set per the part marking and may collide with other I²C devices on the same bus—use the WLAT pin to freeze the wiper during ADC conversions to avoid noise from intermittent switching. This page synthesizes distributor pricing (LCSC $3.0148 as of 2026-10-09, DigiKey and Mouser listings), pin-compatible same-family Microchip alternatives, and PCB design notes not found in the standalone manufacturer datasheet.

MCP6002-I/SN - Dual 1MHz Op Amp, RRIO, 1.8-6V | Microchip

The Microchip Technology MCP6002-I/SN is a dual, general-purpose operational amplifier offering rail-to-rail input and output (RRIO) operation over a 1.8V to 6.0V supply range. Housed in an 8-pin SOIC (SN) package, it provides a typical gain-bandwidth product (GBWP) of 1 MHz, 90-degree phase margin, and a low typical quiescent current of 100 microamperes per amplifier. Industrial temperature range is -40C to +85C. A rail-to-rail operational amplifier is a type of analog IC whose input common-mode range and output swing extend to both supply rails, enabling full utilization of the ADC dynamic range in low-voltage single-supply systems. The MCP6002 sits within the broader product taxonomy of op amp -> amplifier IC -> analog IC -> integrated circuit -> semiconductor. Compared to non-RRIO op amps that lose 1-2V of headroom at each rail, RRIO architectures are the standard choice for battery-powered, sensor-interface, and mixed-signal designs. Key features include a 1 MHz gain-bandwidth product, 0.6 V/microsecond slew rate, 1 pA typical input bias current, and rail-to-rail input/output that allows zero-crossover distortion-free operation near the rails. The device is unity-gain stable, supports capacitive loads up to 200 pF, and includes ESD protection diodes on the inputs. The 8-pin SOIC (SN) package provides a familiar, easy-to-prototype footprint for through-hole-style adapter boards and reflow soldering. Architecturally, the MCP6002 uses a CMOS input stage that achieves 1 pA input bias current - several orders of magnitude lower than bipolar op amps - while the class AB output stage delivers rail-to-rail swing at moderate loads. The combination of low bias current and RRIO makes the part suitable for high-impedance sensor front-ends, photodiode transimpedance amplifiers, and unity-gain buffers driving single-supply ADCs. Typical applications include battery-powered sensor signal conditioning, active filters for audio and instrumentation, transimpedance amplifiers for photodiodes, microcontroller analog input/output buffering, and general-purpose signal amplification in industrial, consumer, and IoT designs. When designing with the MCP6002, observe the input common-mode range includes both rails, but for best distortion performance keep the input 0.3V away from either rail. Decouple the supply pin with a 0.1 microfarad ceramic capacitor placed within 5 mm of the VDD pin, and avoid exceeding 6.0V absolute maximum supply. This page synthesizes distributor pricing from DigiKey, Mouser, and LCSC, drop-in SOIC-8 alternatives including same-family Microchip variants and competitor equivalents, and practical design notes not consolidated on any single manufacturer page.

MCP601-E/P - 2.8 MHz CMOS Op Amp | Microchip

The Microchip Technology MCP601-E/P is a single, general-purpose CMOS operational amplifier with a 2.8 MHz gain-bandwidth product, 2.3 V/µs slew rate, and 1 pA typical input bias current, supplied in an 8-pin PDIP package. It operates from 2.7 V to 6 V and is specified from -40°C to 125°C, combining low power, rail-to-rail output swing, and low offset voltage. An operational amplifier, or op amp, is an active analog component that compares two input voltages and drives its output toward the higher input. Within the power-management and signal-conditioning hierarchy, an op amp provides gain, buffering, filtering, level shifting, or feedback control. The MCP601-E/P is specifically a single-channel CMOS device intended for low-power precision and general-purpose signal conditioning. The MCP601 family's key specifications include a 2.8 MHz gain-bandwidth product, 2.3 V/µs slew rate, approximately 230 µA typical operating current, and less than 2 mV offset voltage according to the Microchip product page. Its CMOS process supports low bias current, while the rail-to-rail output stage allows the output to approach the supply rails more closely than a conventional output stage. Because the MCP601 is a general-purpose amplifier rather than a power semiconductor, its performance depends mainly on supply voltage, feedback topology, load, output frequency, and circuit stability. The 2.8 MHz bandwidth supports low-frequency instrumentation and signal conditioning, while the 2.3 V/µs slew rate limits large-signal response. Designers should verify noise, offset, bias current, common-mode range, and output-current limits against the manufacturer datasheet for the exact operating conditions. Typical uses include industrial process-control signal conditioning, low-power battery-operated equipment, portable instrumentation, data acquisition, test equipment, and low-end audio circuits. The DIP package is useful for prototyping and through-hole assemblies where a socketed amplifier or easy component replacement is desired. For new production designs, confirm package availability, temperature grade, supply limits, and lifecycle status directly with Microchip or an authorized distributor. The verified product page identifies MCP601 availability across PDIP, SOIC, TSSOP, and SOT-23A packages, but the exact -E/P order code and commercial terms should be checked for the current design. This page combines verified manufacturer specifications, distributor availability information, package details, and application guidance to support faster component selection for low-power analog signal-conditioning designs.

MCP602-E/P - 2.8MHz Dual CMOS Op Amp | Microchip

The Microchip Technology MCP602-E/P is a dual general-purpose CMOS operational amplifier with a 2.8 MHz gain-bandwidth product, 2.3 V/us slew rate, and an 8-lead PDIP package. Its typical operating current is 230 uA per amplifier, its typical input offset voltage is below 2 mV, and its specified supply range is 2.7 V to 5.5 V. The device provides rail-to-rail output swing and low bias current, making it suitable for portable, industrial, and signal-conditioning systems. A CMOS operational amplifier is a voltage-controlled differential amplifier implemented with complementary metal-oxide-semiconductor transistors. In the broader electronics hierarchy, an op amp belongs to analog integrated circuits, then amplifiers, then voltage-feedback operational amplifiers, and finally low-power CMOS operational amplifiers. MCP602 combines two independent amplifiers in one package, reducing board area in dual-channel sensor, filtering, buffering, and control circuits. Key features include a 2.8 MHz gain-bandwidth product, 2.3 V/us slew rate, less-than-2 mV typical offset voltage, and 230 uA typical operating current. Rail-to-rail output swing allows the output to approach its supply limits under suitable load conditions, which is useful for low-voltage systems. The dual configuration supports common applications in industrial process control, battery-operated equipment, portable products, data acquisition, test equipment, and low-end audio systems. The MCP602 family is specified for 2.7 V to 5.5 V operation according to the verified manufacturer and distributor material. A separate search result also describes the family as supporting a 2.7 V to 6.0 V single-supply range; because the official product-page result explicitly states 2.7 V to 5.5 V, that verified range is used here. CMOS construction supports low bias current and low power consumption, while the 2.8 MHz bandwidth is adequate for general-purpose low-frequency analog signal conditioning rather than demanding high-speed video or RF stages. Typical applications include two-channel sensor conditioning, portable battery-powered instrumentation, industrial control loops, low-frequency active filters, voltage buffers, audio preamplification, and general data-acquisition front ends. In each case, the designer should verify output swing, input common-mode range, noise, stability, and load drive against the complete operating conditions. The 8-lead PDIP package is suitable for through-hole prototypes, legacy industrial boards, and designs where a dual amplifier in a standard DIP footprint simplifies assembly. For PCB design, place bypass capacitors close to the supply pins and keep analog input and output traces short and away from switching nodes. A common single-supply error is assuming the input common-mode range equals the full rail-to-rail output range; verify the family datasheet for the exact input limits before using the amplifier as a comparator or precision level shifter. This page consolidates verified specifications, sourcing information, design guidance, and explicit data gaps without adding unverified technical claims.

MCP6024T-I/ST - Quad 10MHz RRIO Op Amp | Microchip | 14-TSSOP

The Microchip Technology MCP6024T-I/ST is a quad operational amplifier with a 10 MHz gain bandwidth product, low 1.0 mA typical quiescent current per channel, and rail-to-rail input/output (RRIO) operation, offered in a 14-pin TSSOP (ST) package. It operates on a single 2.5 V to 5.5 V supply, delivers an output current of approximately 30 mA, and provides an input offset voltage under 0.5 mV. An operational amplifier (op amp) is a DC-coupled high-gain electronic voltage amplifier with a differential input and, typically, a single-ended output. It forms the basic building block of analog signal conditioning — used in sensor front-ends, active filters, transimpedance stages, and reference buffers — and is one of the most widely produced linear ICs in the world. The rail-to-rail family extends conventional op-amp input and output ranges to both supply rails, enabling full use of low-voltage ADC dynamic range and avoiding signal clipping in single-supply designs. The MCP6024T-I/ST key features include: 10 MHz GBWP, 7 V/us slew rate, 1.0 mA quiescent current per amplifier, 0.5 mV input offset voltage (typical), RRIO swing, and a chip-select pin for multi-channel power saving. The TSSOP-14 footprint is widely accepted in industrial and consumer designs and offers better thermal behavior than smaller packages. The device is AEC-Q100 qualified when sourced in the VAO/automotive grade, and operates across the -40C to +85C industrial temperature range. Architecturally, the MCP6024 uses Microchip's advanced CMOS process that balances low quiescent current with adequate bandwidth. The input stage uses a complementary differential pair supporting rail-to-rail common-mode range, and the output stage is a complementary CMOS push-pull capable of sourcing/sinking tens of milliamps for driving ADCs directly. Typical applications include transducer signal conditioning (strain gauge, RTD, bridge sensors), battery-powered photomic devices, photodiode transimpedance amplifiers, audio summing/mixing stages, multi-pole active filters, and ADC input drivers in industrial data acquisition. It pairs naturally with the MCP3426 16-bit delta-sigma ADC or the MCP4728 quad DAC for complete analog signal chains. When designing with the MCP6024T-I/ST, take care to bypass the supply pin with a 0.1 uF ceramic capacitor placed within 5 mm of the VDD pin. For low-noise designs, add a 10 uF bulk capacitor on the supply rail. Avoid running input traces parallel to high-current switching traces to preserve CMRR. This page synthesizes distributor pricing, drop-in alternatives sourced from cross-reference data, and practical design notes not found in the manufacturer datasheet — useful for engineers evaluating the MCP6024 family for low-power precision analog front ends.

MCP603-E/P - 2.8MHz Low-Power CMOS Op Amp | Microchip

The Microchip Technology MCP603-E/P is a general-purpose, rail-to-rail-output CMOS operational amplifier with 2.8 MHz gain-bandwidth product, 2.3 V/us slew rate, and low 230 uA typical operating current. It operates from 2.7 V to 6.0 V and is supplied in an 8-pin PDIP package for through-hole PCB designs. An operational amplifier, or op amp, is an analog signal-conditioning semiconductor that uses high open-loop gain to amplify voltage differences. The MCP603 belongs to the voltage-feedback amplifier family within analog and mixed-signal ICs. Its rail-to-rail output can approach the supply limits, making it useful in low-voltage battery-powered systems where conventional output-swing limitations would reduce usable signal range. Key features include a 2.8 MHz typical gain-bandwidth product, a 2.3 V/us typical slew rate, unity-gain stability, low input offset voltage below 2 mV, and low typical operating current of 230 uA. The manufacturer describes the device as operating down to 2.7 V while drawing less than 325 uA quiescent current. Its CMOS process provides low bias current, high-speed operation, high open-loop gain, and rail-to-rail output swing. The amplifier is suited to buffer, amplifier, comparator-style, and general analog-signal conditioning circuits. Because the MCP603 is unity-gain stable, it can be used as a voltage follower without compensation external components. The 2.8 MHz bandwidth provides substantially more signal bandwidth than very-low-power micropower amplifiers while retaining a compact low-power operating point. Typical applications include portable measurement equipment, sensor interfaces, buffered ADC inputs, low-voltage audio and communication circuitry, current or voltage monitoring, and battery-powered instrumentation. The 8-pin PDIP package makes the MCP603-E/P convenient through-hole assembly and prototype construction, although production designs should account for package parasitics and PCB cleanliness. Designers should verify the exact input common-mode limits, output swing, offset, noise, and supply-current limits against the Microchip MCP603 datasheet before finalizing a design. The chip-select feature and rail-to-rail output behavior should be checked against the system power-sequencing requirements. If the application requires higher precision, lower offset, faster response, or smaller surface-mount packaging, a different amplifier should be selected rather than assuming functional interchangeability. This page consolidates distributor and manufacturer information for MCP603-E/P, providing practical application context, verified package details, and a cautious replacement framework focused on same-footprint alternatives rather than unsupported cross-package substitutions.

MCP603-I/P - 2.7V, 2.8MHz CMOS Op Amp | Microchip

The Microchip Technology MCP603-I/P is a single general-purpose operational amplifier with a 2.7 V minimum supply, 2.8 MHz gain-bandwidth product, rail-to-rail output, and low 325 uA maximum quiescent current in an 8-pin PDIP package. It also provides chip select, low bias current, high open-loop gain, and a 2.3 V/us slew rate. An operational amplifier is a high-gain analog building block used in the amplifier hierarchy and wider signal-processing systems. Its differential input stage, feedback network, and output stage support voltage amplification, filtering, buffering, comparison, and current-control functions. The MCP603 combines CMOS characteristics with low-power single-supply operation, making it relevant to portable, battery-powered, industrial, instrumentation, and general-purpose analog designs. The MCP603 family's headline benefits are its low-power operation, 2.8 MHz bandwidth, rail-to-rail output swing, and chip-select control. Advanced CMOS technology provides low bias current and high open-loop gain, while the single amplifier makes the device economical where one buffered or amplified channel is sufficient. Its general-purpose positioning supports signal processing rather than precision-reference or high-current drive functions. According to the verified distributor data, the device is a one-circuit rail-to-rail amplifier in an 8-DIP package measuring 0.300 inches, or 7.62 mm. The listed 2.3 V/us slew rate supports moderate-frequency waveform generation and signal conditioning. The chip-select feature is useful when multiple shared-bus or shared-signal arrangements require the amplifier output to be placed in a controlled state. Typical applications include sensor-signal conditioning, low-power analog filtering, buffered ADC inputs, portable instrumentation, signal buffering, and general low-frequency control loops. Because the available data does not provide every electrical limit or pin assignment, engineers should consult the official Microchip MCP603 product page and datasheet before finalizing gain, noise, common-mode, output-load, and selection logic. For PCB design, preserve short analog input paths, provide a stable supply reference, and place input and output decoupling near the device. Avoid substituting a package or pinout based only on an amplifier-function match; the 8-pin PDIP footprint, pin mapping, supply range, and electrical limits must all be verified. This page combines verified manufacturer and distributor information, sourced commercial data, and engineering guidance for MCP603-I/P selection. Because the supplied data does not establish five same-package drop-in replacements or complete pricing, missing values remain explicitly identified rather than guessed.

MCP604-E/P - 2.8MHz Quad CMOS Op Amp | Microchip

The Microchip Technology MCP604-E/P is a quad general-purpose CMOS operational amplifier with a 2.8 MHz gain-bandwidth product, 230 uA typical operating current, and a 2.7 V to 5.5 V supply range. The device is supplied in a 14-pin PDIP package and provides four rail-to-rail output operational amplifiers with low bias current, high open-loop gain, and rail-to-rail output swing. Its rail-to-rail output capability makes it useful for low-voltage signal conditioning, buffering, filtering, and general-purpose analog systems. An operational amplifier, or op amp, is a high-gain differential amplifier used to amplify, buffer, filter, or compare analog signals. The MCP604 belongs to the CMOS operational-amplifier family and is designed for low-power, single-supply systems. Four amplifiers in one package reduce board area and simplify designs requiring multiple gain stages or independent analog channels. The 2.7 V to 5.5 V operating range supports 3 V and 5 V systems, while rail-to-rail output swing improves usable output range near the supply rails. The 2.8 MHz gain-bandwidth product provides useful bandwidth for low-frequency precision, audio, sensor, and general signal-conditioning circuits. The typical operating current of 230 uA per amplifier is appropriate for battery-powered and portable equipment. Low bias current helps preserve source impedance, while high open-loop gain supports accurate closed-loop amplification. The MCP604-E/P is identified as a CMOS amplifier with four circuits and rail-to-rail operation in the verified distributor data. The MCP604-E/P uses Microchip advanced CMOS technology to combine low power, low bias current, and rail-to-rail output performance. Its general-purpose architecture supports non-inverting, inverting, summing, comparator-style, and active-filter implementations when operated within the datasheet limits. Designers should account for input common-mode range, output swing, noise, stability, and load limitations when selecting external compensation or filter components. Typical uses include portable sensor interfaces, low-voltage audio signal chains, transducer amplification, current-to-voltage conversion, active filters, and general instrumentation. Because each package contains four amplifiers, it is especially suitable for multi-channel designs where board space and power consumption are important. The quad arrangement can also implement differential stages, sample-and-hold-related buffers, and multiple feedback control loops. For PCB layout, keep input and output paths short, provide stable supply bypassing close to the device, and avoid routing sensitive high-impedance inputs beside noisy switching nodes. The PDIP package is suitable for through-hole assembly and prototyping, while the -E/P order suffix denotes the supplied temperature-range and package variant according to the manufacturer naming system. Confirm the exact electrical limits and pin mapping against the Microchip MCP604 datasheet before production use. This page consolidates verified manufacturer and distributor information for the MCP604-E/P, identifies the practical trade-offs of its 14-pin PDIP package, and provides comparison and design guidance for engineers evaluating quad low-power CMOS operational amplifiers. Pricing, availability, and lifecycle information should be checked against live distributor inventory before committing a production order.

MCP604-I/P - 2.8 MHz Quad CMOS Op Amp | Microchip

The Microchip Technology MCP604-I/P is a low-power, quad CMOS operational amplifier with a 2.8 MHz gain-bandwidth product, 230 uA typical operating current, and operation from a single supply as low as 2.7 V, housed in a 14-pin PDIP package. Each amplifier provides low bias current, high open-loop gain, and rail-to-rail output swing for low-voltage signal-conditioning systems. A CMOS operational amplifier is a voltage-amplifying semiconductor in the amplifier IC hierarchy. It controls an output voltage according to the difference between two input voltages. Rail-to-rail output swing lets an amplifier approach its supply limits under suitable load conditions, while low supply voltage and low operating current suit portable, battery-powered, sensor, and instrumentation designs. The MCP604 combines four amplifiers in one package, reducing board area compared with four separate single amplifiers. Its 2.8 MHz gain-bandwidth product supports general-purpose closed-loop signal amplification, while 230 uA typical operating current limits power demand in low-voltage systems. Advanced CMOS technology provides the device's low bias current, high speed, high open-loop gain, and output swing characteristics. The family is specified for 2.7 V to 5.5 V supplies according to the manufacturer material supplied. Single-supply operation simplifies portable equipment, and the four-channel configuration suits sensor interfaces, active filters, voltage buffers, audio preamplification, and general instrumentation. The quad package also allows several circuit functions to be placed in one standardized footprint. MCP604-E/P and MCP604-I/P appear in the supplied comparison sources and share the MCP604 identity and DIP-style option, but the suffix-specific temperature grade and every pin-level compatibility claim must be confirmed from the ordered-device datasheet before substitution. The PDIP package is through-hole rather than surface mount, so board footprint, pin spacing, and assembly method remain important. This page consolidates the verified Microchip product description, distributor inventory references, package information, cross-reference findings, and engineering guidance. The primary design trade-off is integration: four amplifiers in one 14-pin PDIP package simplify quad-channel designs, but single or dual packages may offer a better fit when unused channels, board area, or power consumption matter.

MCP606-I/P - 155kHz Micropower Op Amp | Microchip

MCP607-I/P - Dual 155kHz Micropower Op Amp | Microchip

The Microchip Technology MCP607-I/P is a dual micropower CMOS operational amplifier with a 155 kHz gain-bandwidth product, typical operating current of 18.7 uA per amplifier, and an 8-pin PDIP package. It is designed for low-power signal conditioning, buffering, and instrumentation circuits operating from a single supply as low as 2.5 V. An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify the difference between its input voltages. The MCP607 belongs to the CMOS operational-amplifier family, combining low bias current, low power consumption, unity-gain stability, and rail-to-rail output swing. It is positioned between general-purpose signal conditioning and low-power battery-powered instrumentation. Key features include a 155 kHz gain-bandwidth product, offset voltage below 250 uV, low typical operating current of 18.7 uA, and rail-to-rail output swing. The dual configuration provides two amplifiers in one package, reducing board area and simplifying dual-channel designs. The MCP607 family is unity-gain stable, making it suitable for voltage followers, buffers, cross-coupled circuits, and general closed-loop amplification. Microchip describes the MCP607 as using advanced CMOS technology with low bias current, high open-loop gain, and rail-to-rail output swing. The device is suitable for single-supply systems where current consumption matters, including portable instruments, sensor interfaces, and low-power embedded equipment. The provided manufacturer and distributor results identify the MCP607-I/P as an active 8-pin PDIP device with a 2.5 V to 6.0 V operating supply range. Typical applications include low-power sensor conditioning, portable measurement systems, microphone and audio preamplifier stages, battery-operated instrumentation, and general-purpose analog signal processing. When designing a replacement or new board, confirm the complete pinout, input/output common-mode limits, supply limits, offset performance, and required noise margin against the selected operating point. The principal design trade-off is low power versus bandwidth and drive capability. The 155 kHz gain-bandwidth product is appropriate for low-frequency precision and signal-conditioning tasks, not high-speed signal chains. Decoupling, bias-current return paths, output loading, and stable feedback design should be checked in the final PCB implementation. This product data consolidates the verified Microchip specifications, manufacturer page, distributor listing, packaging information, and application-oriented selection guidance for engineers evaluating the MCP607-I/P.

MCP6072T-E/SN - Dual 1.2MHz Op Amp, RRIO, 110µA | Microchip

The Microchip Technology MCP6072T-E/SN is a dual-channel, rail-to-rail input/output operational amplifier in an 8-pin SOIC (SN) package, designed for high-precision low-power analog signal conditioning. It combines a maximum input offset voltage of ±150 µV with a typical gain bandwidth product of 1.2 MHz and a 0.5 V/µs slew rate, drawing only 110 µA of quiescent current per amplifier. An operational amplifier (op amp) is a high-gain DC-coupled electronic voltage amplifier with differential inputs and a single-ended output, used as a fundamental building block in analog signal chains. Rail-to-rail input/output (RRIO) op amps can accept input signals at or near both supply rails and swing their outputs to within millivolts of either rail, which maximizes dynamic range in low-voltage single-supply systems. The MCP6072 belongs to the voltage-feedback amplifier family, sits in the linear IC hierarchy (op amp -> amplifier IC -> integrated circuit -> semiconductor), and is widely used as a precision, low-power alternative to general-purpose op amps. Key features of the MCP6072 include unity-gain stability (no compensation capacitor required), operation from a single supply as low as 1.8 V up to 6.0 V, 110 µA typical quiescent current per channel, ±150 µV maximum input offset voltage, and 1.2 MHz typical gain bandwidth product. The 8-pin SOIC (SN) package supports surface-mount assembly with standard 1.27 mm pitch and reflow-solderable lead finish. The internal architecture uses a CMOS input stage with rail-to-rail input common-mode range and a complementary output stage for rail-to-rail output swing. The low offset voltage, low bias current, and wide supply range make the device well suited to sensor-interface and battery-powered applications where both precision and low power are required. Typical applications include battery-powered instrumentation, transducer amplification, signal conditioning for sensor outputs, analog filtering, and portable medical or industrial devices. The MCP6072 is also used as a precision buffer for ADC drivers and as a building block in active filter implementations. When designing with the MCP6072, ensure the input common-mode voltage stays within the rails and account for the 0.5 V/µs slew rate when selecting feedback components for higher-frequency signals. Decouple the supply pin with a 0.1 µF ceramic capacitor placed close to the device for stable operation. This page synthesizes current distributor pricing, drop-in alternative candidates from Microchip's portfolio and cross-brand options, and practical design notes that go beyond the bare specifications on the manufacturer datasheet.

MCP607T-I/ST - Dual 25µA CMOS Op Amp, Rail-to-Rail, 8-TSSOP | Microchip

The Microchip Technology MCP607T-I/ST is a dual micropower CMOS operational amplifier delivering 155 kHz gain-bandwidth product from a typical 18.7 µA quiescent supply current per channel, housed in an 8-pin TSSOP (ST) package. It operates on a single supply from 2.5V to 6.0V and provides rail-to-rail output swing, with input common-mode range that extends to the negative rail, making it a flexible building block for low-power signal chains. A CMOS operational amplifier (op amp) is a high-gain DC-coupled electronic voltage amplifier whose input stage uses complementary metal-oxide-semiconductor transistors rather than bipolar junction transistors. CMOS op amps offer extremely high input impedance, very low input bias current, and the ability to operate from low supply voltages - qualities that distinguish them from legacy bipolar op amps in battery-powered and high-impedance sensor applications. Within the broader taxonomy, the MCP607 belongs to the micropower op amp category (quiescent current typically below 100 µA per channel), itself a sub-family of general-purpose operational amplifiers in the linear IC product hierarchy. Key specifications include 250 µV maximum input offset voltage, 1 pA typical input bias current, 110 dB open-loop gain (typical), and rail-to-rail output swing to within a few millivolts of either rail at moderate loads. The CMOS input structure supports input signals that include the negative supply rail (single-supply ground-referenced sensing), while the GBW of 155 kHz comfortably handles audio-bandwidth, transducer conditioning, and slow analog front-end tasks. The MCP607 uses Microchip's advanced CMOS process that pairs low bias current with rail-to-rail output swing and moderate speed. The architecture targets applications where every microampere of quiescent current matters - portable instruments, sensor-conditioning networks, and battery-backed detection circuits - while still providing sufficient bandwidth for active filters and audio pre-amplification. Typical applications include battery-powered sensor signal conditioning, microphone pre-amplifiers, photodiode transimpedance front-ends, active filters in portable medical and instrumentation equipment, A/D converter input buffers, and general-purpose single-supply amplification where ground-referenced signals must be handled directly. When designing with the MCP607, ensure the output load current does not exceed the device's drive capability near the rails - heavy loads reduce output swing to within tens of millivolts of the supply. Place a 0.1 µF decoupling capacitor close to the supply pin and add a bulk capacitor if the op amp drives dynamic loads. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design considerations not found in the manufacturer datasheet alone - giving engineers a single reference for sourcing, replacement, and circuit integration decisions.

MCP608-I/P - 25µA, 2.5V CMOS Op Amp | Microchip

The Microchip Technology MCP608-I/P is a single, rail-to-rail operational amplifier with a 25 µA typical operating current, 2.5 V minimum supply operation, and an 8-PDIP package. Its 155 kHz gain-bandwidth product and typical offset voltage below 250 µV make it suitable for low-power analog signal conditioning, battery-powered instruments, sensor interfaces, and precision voltage-feedback applications. The MCP608 family uses Microchip CMOS technology to provide low bias current, high open-loop gain, and rail-to-rail output swing. An operational amplifier is an analog IC that amplifies the difference between two input voltages while providing high input impedance and low output impedance. In the signal-chain hierarchy, the MCP608-I/P is an amplifier IC, specifically a general-purpose CMOS operational amplifier used for precision gain, filtering, buffering, and low-voltage analog conditioning. Its low supply current and low minimum supply voltage are especially useful when the circuit must operate from small energy sources or when every milliampere affects battery life. The MCP608-I/P combines a 155 kHz gain-bandwidth product with low quiescent current, making it appropriate for moderate-bandwidth precision circuits rather than high-speed signal chains. According to the manufacturer product information, the offset voltage is less than 250 µV, while the operating current is typically 18.7 µA on the MCP608 family. Rail-to-rail output swing helps preserve usable output range near the supply rails, although input common-mode range, output drive, noise, and stability must be checked against the exact operating conditions. The single amplifier includes chip-select functionality, allowing a system to reduce supply current when the amplifier is not needed. The -I/P ordering code identifies the industrial temperature and 8-PDIP package variant, although the exact temperature limits and full ordering information should be confirmed in the manufacturer datasheet before production release. The 8-PDIP footprint is through-hole and differs from the surface-mount package variants, so PCB substitution must be based on pinout and package verification. Typical applications include portable measurement equipment, low-power sensor interfaces, battery-powered control systems, analog signal conditioning, voltage buffers, and low-frequency active filters. Because the MCP608-I/P is a low-power device, its performance should be evaluated for the required load, bandwidth, noise, and supply range rather than judged only by its nominal operating current. For PCB designs, preserve the manufacturer-recommended bypass capacitors and verify the package pinout before layout release. In battery systems, confirm the total quiescent current of the amplifier and surrounding circuitry, and check output settling when operating at low closed-loop bandwidths. This page synthesizes verified product information, sourcing links, application guidance, and replacement constraints to support practical engineering selection.

MCP609-I/P - 155 kHz Micropower Quad Op Amp | Microchip

The Microchip Technology MCP609-I/P is a micropower, rail-to-rail-output CMOS quad operational amplifier with a gain-bandwidth product of 155 kHz, typical operating current of 18.7 uA, and input offset voltage below 250 uV. It is supplied in a 14-pin PDIP package and operates from 2.5 V to 6.0 V. The device combines four amplifiers in one package, making it useful where board area, supply current, and low-voltage operation matter. A CMOS operational amplifier is an analog signal-conditioning semiconductor that uses high-input-impedance active circuitry to amplify voltage differences. The MCP609 belongs to the hierarchy CMOS op amp -> operational amplifier -> analog amplifier -> integrated circuit. Its four internal channels can buffer, amplify, filter, or perform basic analog calculations while operating from a single low-voltage supply. According to Microchip's official product page, key characteristics include 155 kHz gain-bandwidth, 18.7 uA typical operating current, offset voltage below 250 uV, low bias current, high open-loop gain, and rail-to-rail output swing. Rail-to-rail output improves usable output range on low-voltage supplies, while the micropower architecture limits current draw in battery-powered and portable systems. The exact input common-mode range, output-current capability, slew rate, and noise figures were not supplied in the verified excerpts and require confirmation from the manufacturer datasheet. The MCP609-I/P is intended for single-supply operation between 2.5 V and 6.0 V. Its CMOS process supports low power consumption and rail-to-rail output behavior, but designers should still check input range, output drive, stability, and load compatibility against the complete datasheet. The -I/P ordering suffix indicates the supplied package and commercial temperature designation, but exact suffix-specific limits should be verified before production release. Typical uses include portable sensor interfaces, low-voltage signal conditioning, audio and communication circuits, battery-powered instrumentation, and general-purpose buffering. One package provides four amplifiers, which can reduce external component count and simplify routing in systems requiring several low-frequency analog channels. The 155 kHz bandwidth is suitable for low-frequency conditioning rather than demanding high-speed signal processing. For robust layouts, keep input and feedback paths short, route sensitive inputs away from switching nodes, provide local supply bypassing, and check output loading against the datasheet limits. Because the verified material does not provide complete pin names, electrical limits, or a manufacturer PDF URL, those fields remain explicitly marked or null instead of being inferred. This page combines the verified product claims with cautious application guidance and identifies where datasheet confirmation is required. This MCP609-I/P page consolidates the official manufacturer description, distributor identification, pricing reference, and design-oriented context so engineers can quickly evaluate a quad micropower op amp for low-voltage analog systems. Use the listed data sources and obtain the current manufacturer datasheet before committing to a design.

MCP6491T-E/LTY - 7.5MHz Low-Bias Op Amp | Microchip

The Microchip MCP6491T-E/LTY is a single, rail-to-rail input and output operational amplifier with a typical gain-bandwidth product of 7.5 MHz, typical low input bias current of 150 pA at 125°C, and operation from a single supply as low as 2.4 V. It is packaged in the compact 5-pin SC-70 package and offered in tape-and-reel packaging. The device is unity-gain stable, making it suitable for low-power signal conditioning when both source impedance and stability requirements are considered. An operational amplifier, or op amp, is a voltage-controlled differential amplifier used to amplify, buffer, filter, compare, or reshape analog signals. Within the broader semiconductor hierarchy, this product is an analog integrated circuit, specifically a general-purpose CMOS operational amplifier. Rail-to-rail input operation helps the amplifier accept signals near its supply rails, while rail-to-rail output operation extends usable output swing toward the rails. The low input bias current makes the MCP6491 family useful with high-impedance sources where amplifier input current can materially affect accuracy. The MCP6491 family combines a typical 7.5 MHz gain-bandwidth product with low power consumption. According to the Microchip manufacturer page, the devices draw a typical 530 µA per amplifier, support single-supply operation from 2.4 V, and provide rail-to-rail input and output behavior. The manufacturer datasheet states that the MCP6491/MCP6492/MCP6494 family uses an advanced CMOS process and is specified over an extended temperature range from -40°C to +125°C. The MCP6491T-E/LTY is a single-amplifier device, whereas MCP6492 and MCP6494 provide dual and quad versions respectively. Unity-gain stability supports direct use as a voltage follower, but board-level stability still depends on output capacitive load, feedback topology, operating voltage, and the surrounding source and load impedances. The low typical input bias current is particularly relevant when driving the input from sensors, photodiodes, resistive dividers, or other high-output-impedance sources. Typical applications include low-power sensor signal conditioning, current-monitoring front ends, battery-powered instrumentation, portable measurement systems, analog filtering, and general-purpose signal buffering. The 5-pin SC-70 package supports compact layouts, but users should follow the manufacturer datasheet for land patterns, exposed-pad or lead information, and assembly guidelines. Designers should verify supply voltage limits, input common-mode range, output swing, output-drive capability, noise, offset voltage, and load stability in the manufacturer datasheet. A bypass capacitor close to the supply pins is generally important for clean operation, while input and feedback resistors should be selected to control bias-current error and preserve the required bandwidth. This product page consolidates the verified Microchip specifications, distributor availability information, package details, and design considerations. It is intended to support component selection and board-level planning without guessing electrical limits that are not explicitly provided in the verified source material.

MCP6S21-I/MS - 1-Ch SPI PGA, 12 MHz, 8-MSOP | Microchip

The Microchip Technology MCP6S21-I/MS is a single-channel, rail-to-radially Programmable Gain Amplifier (PGA) with 8 gain steps (gain = 1, 2, 4, 5, 8, 10, 16, 32 V/V), configured over an SPI bus, and housed in an 8-pin MSOP package. It operates from a single 2.5 V to 5.5 V supply, delivers a typical -3 dB bandwidth of 12 MHz at gain = 1 V/V, and consumes only 1.0 mA typical quiescent current while supporting rail-to-rail input and output swing. A Programmable Gain Amplifier (PGA) is an analog amplifier whose closed-loop gain is digitally selectable rather than fixed by external resistors. PGAs sit between a sensor or transducer and the rest of the signal chain, allowing a microcontroller to adjust dynamic range on the fly. Within the broader taxonomy, the MCP6S21 belongs to the family of variable-gain amplifiers (VGAs) and instrumentation-style building blocks, all of which fall under the wider class of operational amplifiers and analog front-end (AFE) ICs. By replacing mechanical gain-switch relays or precision resistor networks with an SPI-programmable block, the MCP6S21 reduces BOM count, board area, and software-driven calibration latency. Key features include 12 MHz gain-bandwidth, 1 mA typical supply current, low 1.35 mV input-offset voltage (max 4.5 mV over temperature), 8 discrete gain steps up to 32 V/V, hardware and software shutdown modes, and daisy-chainable SPI interface. The MSOP-8 surface-mount package makes the part a strong fit for dense sensor-conditioning boards where board real estate is at a premium. The MCP6S21 uses a CMOS input stage with rail-to-rail input common-mode range and rail-to-rail output drive, allowing it to digitize signals near either supply rail with no dead zone. Its SPI interface lets the host microcontroller change gain on a sample-by-sample basis without external switching components, and the serial interface supports daisy-chaining for multi-PGA boards. The architecture is specified from -40 °C to +85 °C (industrial grade, indicated by the -I suffix). Typical applications include multi-range sensor signal conditioning (strain-gauge bridges, thermocouples, photodiodes), AGC loops in audio and instrumentation, automotive sensor interfaces, and industrial process-control front ends. The SPI programmability also suits software-defined radio (SDR) IF stages and gain-trimmed ADC drivers where dynamic range must be tuned per channel. Designers should keep the input common-mode voltage within the rail-to-rail range and bypass VDD with a 0.1 µF ceramic capacitor placed close to the supply pin. The shutdown pin (SHDN, active-low) must be driven logic-high for normal operation and can be tied to VDD through a pull-up if unused; the latch-up immunity exceeds 100 mA per JESD78. This page synthesizes distributor pricing, drop-in alternatives in the same MSOP-8 footprint, and practical design notes not found in the manufacturer datasheet.

MCP6S28-I/SL - 8-Ch 12 MHz SPI Programmable Gain Amplifier | Microchip

The Microchip Technology MCP6S28-I/SL is an 8-channel, single-ended, rail-to-rail Input/Output Programmable Gain Amplifier (PGA) with 12 MHz gain-bandwidth product and SPI-programmable channel selection, housed in a 16-pin SOIC (SL) package. It offers eight programmable gain steps from +1 V/V to +32 V/V, selectable through an SPI-compatible serial interface operating up to 10 MHz, enabling software-defined gain control and input multiplexing in embedded data-acquisition systems. A Programmable Gain Amplifier (PGA) is an analog integrated circuit that combines an input multiplexer, a variable-gain voltage amplifier, and a digital control interface in one package. PGAs sit at the front end of data-acquisition signal chains, between sensors or transducers and an analog-to-digital converter, performing both channel selection (replacing mechanical or analog switches) and gain setting (replacing precision resistor networks) entirely under firmware control. The PGA category belongs to the broader family of special-purpose amplifiers and signal-conditioning ICs, sitting alongside instrumentation amplifiers and variable-gain amplifiers in modern mixed-signal designs. The MCP6S28-I/SL provides ±1% maximum gain error, ±275 µV maximum input offset voltage, 10 nV/√Hz input voltage noise density, and rail-to-rail input and output swing on a 2.5 V to 5.5 V single supply. The 12 MHz gain-bandwidth product comfortably supports audio-bandwidth and fast instrumentation signals, while the SPI port enables reconfigurable channel and gain selection in real time. Its low-power CMOS design keeps quiescent current minimal, which is valuable for battery-powered and portable designs where energy budgets are tight. Internally, the device uses a CMOS operational architecture with switched-capacitor gain stages and an 8-to-1 input analog multiplexer. The serial peripheral interface writes gain and channel registers at clock rates up to 10 MHz, allowing rapid reconfiguration between acquisitions. The rail-to-rail input stage accepts signals near either supply rail, which is particularly useful in single-supply 3.3 V or 5 V systems where sensor outputs may swing close to ground. Typical applications include industrial process-control signal chains, multi-channel sensor signal conditioning for data-acquisition systems, audio mixer front-ends, programmable gain stages in test and measurement equipment, and embedded data-acquisition front-ends paired with PIC or dsPIC microcontrollers. The SPI control makes it ideal for systems that need to dynamically re-route or re-scale multiple analog inputs under firmware management. Engineers commonly pair this PGA with a successive-approximation ADC or a microcontroller's internal ADC to build software-reconfigurable analog front ends. When designing with this device, allocate a chip-select line for the SPI bus and provide a clean 2.5 V to 5.5 V analog supply with 0.1 µF decoupling placed close to the IC. Choose the gain to keep the input signal within the ±275 µV offset error budget and prevent output saturation at the rail. Avoid driving large capacitive loads directly on the output without a series resistor to control AC overshoot. This page synthesizes distributor pricing, drop-in SOIC-16 alternatives, and practical design notes that complement the Microchip datasheet and help engineers select the right PGA for their multi-channel analog front end.