Amplifier ICs
Products (230)
ADA4950-2YCPZ-RL7 - Selectable Gain Diff ADC Driver | Analog Devices
The ADA4950-2YCPZ-RL7 is a dual, low power, selectable gain differential ADC driver from Analog Devices. It is a gain-selectable version of the ADA4932-2, featuring on-chip feedback and gain resistors that allow the user to select gains of 1, 2, or 3 without external components. This device is designed to drive high-performance analog-to-digital converters (ADCs) in both single-ended-to-differential and differential-to-differential configurations. Housed in a compact 24-lead LFCSP (4x4 mm) package, it operates from a single 3.3V to 11V supply or dual ±1.65V to ±5.5V supplies, making it versatile for various signal chain designs. A differential ADC driver is a specialized amplifier that converts a single-ended or differential input signal into a balanced differential output, optimized to interface with the differential inputs of high-speed ADCs. It provides the necessary gain, common-mode voltage shifting, and low output impedance to drive the ADC's sampling capacitor without degrading signal integrity. In the signal chain hierarchy, a differential ADC driver sits between the sensor/amplifier stage and the ADC, ensuring that the ADC receives a clean, well-conditioned signal for accurate conversion. Key features of the ADA4950-2 include a wide -3 dB bandwidth of 750 MHz, a slew rate of 2900 V/µs, and a low input voltage noise of 2.2 nV/√Hz. The device also offers a low offset voltage of 200 µV and a high output current of 60 mA, enabling it to drive the capacitive loads of ADCs effectively. The selectable gain feature simplifies design by eliminating the need for external resistor networks, reducing board space and component count. Fabricated using Analog Devices' proprietary silicon-germanium (SiGe) complementary bipolar process, the ADA4950-2 achieves low distortion and noise at low power consumption. The device features a power-down mode that reduces quiescent current to 0.5 mA, making it suitable for power-sensitive applications. Its excellent dynamic performance, including a spurious-free dynamic range (SFDR) of -90 dBc at 10 MHz, ensures high-fidelity signal processing. Typical applications include driving high-speed ADCs in communications, instrumentation, and medical imaging systems. It is also used in single-ended-to-differential conversion for balanced audio and video signals, and in differential signal conditioning for industrial sensors. The ADA4950-2's low power and small footprint make it ideal for portable and battery-powered equipment. When designing with this device, ensure proper power supply decoupling with 0.1 µF and 10 µF capacitors placed close to the VCC and VEE pins. The output common-mode voltage can be set via the VOCM pin, which should be driven by a low-impedance source to maintain accuracy. For optimal performance, keep the feedback and gain paths short and use ground planes to minimize parasitic inductance.
ADL5561ACPZ-R7 - 2.9GHz RF/IF Diff Amp | Analog Devices
The ADL5561ACPZ-R7 is a high performance differential amplifier from Analog Devices, optimized for RF and IF applications. It features a -3 dB bandwidth of 2.9 GHz at a gain of 6 dB, low noise of 2.1 nV/√Hz, and excellent distortion performance over a wide frequency range. The device operates from a 3 V to 3.6 V supply and consumes only 40 mA of supply current. It is available in a 16-lead LFCSP-VQ (3x3 mm) package, making it suitable for space-constrained designs. A differential amplifier is an electronic amplifier that amplifies the difference between two input voltages while rejecting common-mode signals. In RF and IF applications, differential amplifiers are used to convert single-ended signals to differential, drive high-speed ADCs, and provide gain with high linearity. The ADL5561 belongs to the class of RF/IF amplifiers, which are essential in communication systems, radar, and test equipment. Key features of the ADL5561 include pin-strappable gain adjust of 6 dB, 12 dB, and 15.5 dB, differential or single-ended input to differential output capability, and a low supply current of 40 mA. The amplifier is designed to drive high-speed 8-bit to 16-bit ADCs, providing low noise and high linearity to preserve signal integrity. Its wide bandwidth and low distortion make it ideal for IF sampling receivers, software-defined radios, and broadband communication systems. The ADL5561 utilizes a differential architecture that provides excellent common-mode rejection and reduces even-order harmonics. The device is specified over a wide temperature range and is RoHS compliant. Its small LFCSP package with exposed pad aids in thermal management, ensuring reliable operation in demanding environments. Typical applications include ADC drivers for communications and instrumentation, IF amplifier stages in receivers, and differential signal conditioning. The ADL5561 is also suitable for driving mixers and other high-speed analog components. When designing with the ADL5561, proper layout and decoupling are critical to achieve the specified performance. Use low-inductance capacitors close to the supply pins and maintain a solid ground plane. The exposed pad should be soldered to the PCB ground for optimal thermal and electrical performance.
ADL5562ACPZ-R7 - 3.3GHz RF/IF Differential Amplifier | Anal
The Analog Devices ADL5562ACPZ-R7 is a high performance differential amplifier optimized for RF and IF applications. It provides 10 MHz to 3.3 GHz operation, 2.1 nV/√Hz input voltage noise, and pin-strappable gain levels of 6 dB, 12 dB, and 15.5 dB in a 16-lead LFCSP-VQ (3 mm x 3 mm) package. Operating from a 3 V to 3.6 V supply, the device uses a VCOM pin for output common-mode control and is specifically designed to drive high-speed 8-bit to 16-bit ADCs. An RF/IF differential amplifier is a wideband amplifier that takes a balanced or single-ended input and produces a differential output, preserving signal integrity while rejecting common-mode noise. It sits between the IF filter or mixer and the ADC, providing gain and low distortion so that the converter sees a clean, well-conditioned signal. In the amplifier hierarchy, the ADL5562 is an RF/IF-specific differential driver, distinct from general-purpose operational amplifiers or baseband video buffers. Key features include a 3.3 GHz bandwidth for high-IF sampling, 2.1 nV/√Hz input noise for high-SNR receiver chains, and three pin-selectable gain settings that eliminate the need for external gain-setting resistors. The output common-mode is adjustable through the VCOM pin, allowing direct interface to a wide range of ADC input stages. The low noise figure of 7.3 dB at maximum gain is a useful starting point for chain budget analysis. The ADL5562 uses a feed-forward resistor architecture to set gain without external components, simplifying BOM and layout. The amplifier provides high differential open-loop gain and an output common-mode circuit that gives designers flexible dc biasing. The 16-lead LFCSP-VQ package with exposed pad supports good thermal and electrical grounding in compact RF front ends. Typical applications include high-IF ADC drivers for communications receivers, IF sampling in software-defined radio, test and measurement front ends, and broadband instrumentation. The device is also suited for radar and defense IF chains where 3.3 GHz bandwidth and low distortion are required. Its combination of low noise, high bandwidth, and pin-programmable gain makes it a practical building block for modern receiver architectures. When designing with this amplifier, keep the VCOM pin properly bypassed and place gain-select strap resistors or solder bridges close to the device. Follow the datasheet application circuits for input matching, output filtering, and power supply decoupling to achieve the specified distortion and noise performance.
ADUM3190ARWZ-RL7 - 2.5kV Isolated Error Amplifier | Analog Devices
The ADUM3190ARWZ-RL7 is an isolated error amplifier from Analog Devices, based on iCoupler® technology. It is designed for linear feedback power supplies, providing a precise 1.225 V reference and a wide supply range of 3 V to 20 V on both sides. The device offers 400 kHz bandwidth and 2.5 kV rms isolation, making it suitable for isolated power conversion applications. An isolated error amplifier is a specialized amplifier that transfers an error signal across an isolation barrier without a direct electrical connection. It is a key component in isolated power supplies, where it compares the output voltage to a reference and sends the error signal to the primary-side controller. This enables regulation while maintaining galvanic isolation for safety and noise immunity. Key features include a 1.225 V reference voltage, compatibility with Type II or Type III compensation networks, and low power operation of less than 7 mA total. The device supports a wide supply range of 3 V to 20 V on both VDD1 and VDD2, and provides 400 kHz bandwidth. It is available in a 16-lead SOIC-W package, offering a compact solution for isolated feedback. The ADUM3190 uses iCoupler technology, which integrates micro-transformers to achieve isolation, eliminating the need for optocouplers and providing improved reliability and performance. The device is compatible with DOSA (Distributed-power Open Standards Alliance) standards, ensuring interoperability. It also meets safety approvals including UL 1577 and IEC/EN/CSA 62368-1. Typical applications include shunt regulators, linear power supplies, inverters, and uninterruptible power supplies (UPS). The device is ideal for isolated feedback in AC-DC and DC-DC converters, where precise regulation and isolation are critical. Its wide supply range and low power consumption make it suitable for both industrial and consumer power systems. When designing with the ADUM3190, ensure proper PCB layout to maintain isolation creepage and clearance distances. The device requires bypass capacitors on both supply pins to ensure stable operation. The reference voltage accuracy is critical for output regulation, so use precision resistors in the feedback network.
ADUM3191ARWZ-RL7 - Isolated Error Amplifier | Analog Devices
The Analog Devices ADUM3191ARWZ-RL7 is an isolated error amplifier based on iCoupler technology, supplied in a 16-lead SOIC-W (RWZ) tape-and-reel package. It provides precision isolated voltage feedback for linear and switch-mode power supplies without depending on optocoupler current-transfer-ratio drift. The device integrates an error amplifier and a galvanic isolation barrier in one monolithic IC, simplifying PCB layout, reducing component count, and improving long-term stability. An isolated error amplifier is a specialized analog building block that compares a feedback voltage on one side of an isolation barrier with an internal reference and transmits a corrected error signal to the other side across the barrier. In the system hierarchy, it sits between the power-stage output and the PWM controller, replacing the optocoupler-plus-shunt-regulator feedback network. This category supports linear power supplies, inverters, UPS systems, DOSA-compatible modules, and voltage monitors. Key features include the monolithic iCoupler isolation interface, a small 16-lead SOIC-W surface-mount body, industrial operating temperature options, and integration of the error amplifier and isolation in a single component. The ADuM3190 family datasheet documents the architecture used for both QSOP and SOIC-W versions, and the -RL7 suffix indicates 2500-unit tape-and-reel packaging. Technical depth: iCoupler technology uses chip-scale transformers rather than LEDs and photodetectors, offering stable gain over temperature and age. Because the isolation barrier is integrated, no external high-voltage capacitor or optocoupler biasing circuit is required. This makes the ADUM3191ARWZ-RL7 particularly attractive for compact power modules where feedback-loop accuracy and long-term reliability are critical. Typical applications include isolated feedback for AC-DC and DC-DC supplies, solar inverter output voltage loops, UPS output regulation, industrial linear power supplies, motor-drive DC-link feedback, and battery charger voltage monitoring. Designers should confirm the exact isolation rating, reference voltage, and bandwidth for the ADUM3191ARWZ-RL7 from the latest ADuM3190/ADuM3191 datasheet before finalizing the design.
ADUM3195ARWZ - Isolated Amplifier with Adjustable Gain | Analog Devices
The ADUM3195ARWZ is an isolated amplifier with adjustable gain and single-ended output from Analog Devices. It is designed for precision voltage and current sensing in isolated power supply feedback loops, motor control, and industrial automation. The device provides galvanic isolation up to 3000 V rms, ensuring safe signal transfer across isolation barriers. It operates from dual supplies: VDD1 and VDD2, each ranging from 4.5 V to 5.5 V. The bandwidth is 210 kHz, making it suitable for high-speed control loops. The ADUM3195ARWZ comes in a 16-lead SOIC (RW-16) package, offering a compact solution for space-constrained designs. An isolated amplifier is a type of amplifier that provides electrical isolation between its input and output stages, preventing dangerous voltages or ground loops from affecting the signal path. It is a critical component in applications where safety and noise immunity are paramount, such as in medical devices, industrial motor drives, and power conversion systems. The isolation barrier is typically implemented using capacitive or magnetic coupling, allowing signal transfer without a direct electrical connection. This enables the amplifier to measure voltages or currents across a high-voltage boundary while maintaining signal integrity and protecting low-voltage control circuitry. Key features of the ADUM3195ARWZ include adjustable gain, which allows designers to set the amplification factor according to their specific sensing requirements. The single-ended output simplifies interfacing with ADCs and microcontrollers. The device also offers excellent common-mode transient immunity, ensuring reliable operation in noisy industrial environments. The 210 kHz bandwidth supports fast transient response, essential for stable feedback loops in switching power supplies. The wide supply range of 4.5 V to 5.5 V on both sides provides flexibility in system design. Technically, the ADUM3195ARWZ uses Analog Devices' iCoupler technology, which integrates isolation and amplification in a single chip. This technology uses chip-scale transformers to transmit signals across the isolation barrier, offering superior performance compared to optocouplers, including higher speed, lower power consumption, and better reliability. The adjustable gain is implemented via an external resistor network, allowing precise control over the amplification factor. The device also features a reference output, which can be used to set the common-mode voltage of the output signal. Typical applications include isolated voltage sensing in AC-DC and DC-DC converters, current sensing in motor drives, and isolated signal conditioning in industrial process control. The ADUM3195ARWZ is also used in battery management systems and solar inverters, where isolation is required for safety and noise reduction. Its high bandwidth and adjustable gain make it ideal for closed-loop control systems that require accurate and fast feedback. When designing with the ADUM3195ARWZ, it is important to ensure proper decoupling on both supply pins and to place the external gain-setting resistors close to the device to minimize parasitic capacitance. The layout should also maintain adequate creepage and clearance distances on the PCB to meet isolation safety standards.
ADUM3195ARWZ-RL7 - Isolated Amplifier | Analog Devices
The ADuM3195ARWZ-RL7 is an isolation amplifier based on Analog Devices' iCoupler® technology, designed for isolated voltage sensing applications. It features very low offset and gain error, making it ideal for precision isolated feedback in power supplies, motor drives, and industrial control systems. The device provides a single-ended output and adjustable gain, allowing flexible configuration for various sensing ranges. It is available in a 16-lead SOIC-W package, suitable for surface-mount assembly. An isolation amplifier is a type of amplifier that provides electrical isolation between its input and output stages, typically using capacitive or magnetic coupling. This isolation protects sensitive control circuitry from high voltages, ground loops, and noise, while maintaining signal integrity. In the hierarchy of signal conditioning, an isolation amplifier falls under analog front-end components, which are essential in industrial and automotive applications where safety and reliability are paramount. Key features of the ADuM3195 include a wide input common-mode voltage range, high common-mode transient immunity, and low power consumption. The device operates over a wide temperature range, making it suitable for harsh environments. Its adjustable gain allows designers to optimize the output swing for specific ADC inputs, reducing the need for external scaling components. Technically, the ADuM3195 uses iCoupler technology, which employs chip-scale transformers to transmit signals across the isolation barrier. This approach offers advantages over optocouplers, such as higher speed, better reliability, and no LED degradation over time. The device also includes an internal reference and output amplifier, simplifying the external circuit design. Typical applications include isolated voltage sensing in switch-mode power supplies, motor control, and battery monitoring systems. The ADuM3195 is also used in isolated data acquisition systems where ground loop isolation is critical. Its low offset and gain error ensure accurate measurement, which is essential for closed-loop control. When designing with the ADuM3195, it is important to provide proper power supply decoupling and to follow the recommended layout guidelines to maintain isolation performance. The device requires a separate ground plane for the input and output sides to achieve the specified common-mode transient immunity.
ADUM3196ARWZ - Isolated Error Amplifier | Analog Devices
The ADUM3196ARWZ is an isolated error amplifier from Analog Devices, designed for use in isolated power supply feedback loops. It combines a precision error amplifier with an integrated digital isolator, providing a compact solution for voltage regulation across an isolation barrier. The device operates from a single 3.0V to 20V supply on the primary side and supports a secondary-side supply from 3.0V to 20V, making it versatile for various power conversion topologies. An isolated error amplifier is a specialized component that amplifies the difference between a reference voltage and a feedback signal while providing galvanic isolation between the input and output. This isolation is critical in power supplies where the primary and secondary sides must be electrically separated for safety and noise immunity. The ADUM3196ARWZ integrates this function into a single SOIC-16 package, reducing board space and component count compared to discrete solutions. Key features of the ADUM3196ARWZ include a 400 kHz bandwidth, a typical offset voltage of 0.5 mV, and a gain of 1 V/V. The device provides reinforced isolation with a working voltage of 1000 Vrms and a transient immunity of 25 kV/us, ensuring reliable operation in harsh industrial environments. It also features an internal 1.0V reference, simplifying the design of feedback networks. The ADUM3196ARWZ uses Analog Devices' iCoupler technology, which integrates magnetic isolation with analog circuitry on a single chip. This architecture provides precise signal transfer across the isolation barrier without the need for external optocouplers or separate isolation amplifiers. The device is designed for high reliability, with a typical isolation lifetime of 50 years at 1000 Vrms working voltage. Typical applications include isolated DC-DC converters, AC-DC power supplies, and isolated voltage sensing in industrial, automotive, and telecommunications systems. The device is particularly suited for applications requiring high accuracy and stability over temperature, such as server power supplies and battery chargers. When designing with the ADUM3196ARWZ, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. The device requires a bypass capacitor on both supply pins, and the feedback network should be placed close to the error amplifier inputs to reduce noise pickup.
ADUM3196ARWZ-RL7 - Isolated Error Amplifier | Analog Devices
The ADUM3196ARWZ-RL7 is an isolated error amplifier with adjustable gain and single-ended output from Analog Devices, designed for shunt regulator, linear power supply, inverter, and UPS applications. It integrates Analog Devices' iCoupler technology to provide galvanic isolation between the primary and secondary sides, eliminating the need for optocouplers and improving reliability and performance. The device operates from a 3.0 V to 20 V supply on the primary side and 3.0 V to 20 V on the secondary side, with a typical quiescent current of 1.2 mA. It offers a bandwidth of 200 kHz and a gain accuracy of ±1%, making it suitable for precise voltage and current sensing in isolated power conversion systems. An isolated error amplifier is a specialized amplifier that provides electrical isolation between its input and output while maintaining accurate signal transfer. It is commonly used in isolated power supplies to sense output voltage or current and feed back a control signal across the isolation barrier. The ADUM3196ARWZ-RL7 belongs to the category of isolation amplifiers, which are part of the broader family of analog signal conditioning ICs. These components are essential in applications requiring safety isolation, noise immunity, and ground loop elimination. Key features of the ADUM3196ARWZ-RL7 include a wide input common-mode voltage range of -0.3 V to 20 V, a fixed gain of 1 V/V (adjustable with external resistors), and a high common-mode transient immunity of 25 kV/µs. The device is available in a 16-lead SOIC (RW-16) package, which is compact and suitable for space-constrained designs. It also features an internal reference of 1.2 V and a shutdown pin for power saving. The operating temperature range is -40°C to +125°C, making it suitable for industrial and automotive environments. Technically, the ADUM3196ARWZ-RL7 uses a proprietary iCoupler transformer-based isolation technology, which offers superior performance compared to optocouplers, including higher speed, better temperature stability, and longer lifespan. The device includes an internal voltage reference and an error amplifier with a transconductance output stage, allowing direct connection to a shunt regulator or a PWM controller. The gain can be set externally using two resistors, providing design flexibility. The output is single-ended, simplifying interface with downstream control circuits. Typical applications include isolated voltage sensing in AC-DC power supplies, isolated current sensing in motor drives, and feedback control in solar inverters. The device is also used in battery management systems and industrial automation where galvanic isolation is required. Its high common-mode transient immunity ensures reliable operation in noisy environments. When designing with the ADUM3196ARWZ-RL7, it is important to provide adequate decoupling on both supply pins and to ensure that the isolation barrier is not stressed beyond its rated voltage. The gain-setting resistors should be precision types to maintain accuracy. The device is RoHS compliant and lead-free, meeting environmental standards.
E-TDA7391PDTR - 2x40W Dual BTL Audio Amplifier | STMicroelectronics
The E-TDA7391PDTR is a dual-channel bridge-tied load (BTL) audio power amplifier from STMicroelectronics, designed for high-quality car radio and multimedia applications. It delivers up to 2x40W of output power into a 4-ohm load with a 14.4V supply, making it a robust solution for automotive audio systems. The device is housed in a PowerSO-20 package, which provides excellent thermal performance for high-power operation. An audio power amplifier is an electronic device that increases the amplitude of audio frequency signals to drive loudspeakers. In the hierarchy of audio electronics, a BTL amplifier is a type of linear amplifier that uses a bridge configuration to double the voltage swing across the load, effectively quadrupling the output power compared to a single-ended amplifier with the same supply voltage. This makes BTL amplifiers ideal for automotive applications where the battery voltage is limited to 12V or 14.4V, and high output power is required without using bulky transformers or switching converters. Key features of the E-TDA7391PDTR include a wide operating supply voltage range of 8V to 18V, a low quiescent current of 120mA, and a high output power of 40W per channel at 10% THD. The device also features standby and mute functions for power management, a pop-free turn-on/off sequence, and full short-circuit and thermal protection. The PowerSO-20 package has an exposed pad that enhances heat dissipation, allowing continuous operation at high power levels without external heatsinks in many applications. The E-TDA7391PDTR uses a complementary NPN/PNP output stage with a class-AB biasing scheme, which provides low crossover distortion and high linearity. The device incorporates a sophisticated protection circuitry that includes output short-circuit protection, over-temperature shutdown, and load dump protection, ensuring reliable operation in harsh automotive environments. The standby and mute pins allow for easy system-level power management, reducing power consumption when the audio system is not in use. Typical applications include car radio head units, multimedia systems, and aftermarket audio amplifiers. The high output power and low distortion make it suitable for driving mid-range and subwoofer speakers in automotive sound systems. The device can also be used in home theater systems and portable PA systems where a compact, high-power amplifier is required. When designing with the E-TDA7391PDTR, it is essential to provide adequate power supply decoupling with a 1000uF electrolytic capacitor and a 100nF ceramic capacitor close to the supply pins. The exposed pad must be soldered to a large copper area on the PCB to ensure proper thermal management. Additionally, the standby and mute pins should be controlled with a microcontroller or a simple RC network to ensure a pop-free power-up sequence.
INA2181 26V Dual-Channel Current Sense Amp | TI | Gain 20 V/V
The Texas Instruments INA2181 (e.g., INA2181A1IDGSR) is a 26V, dual-channel, bidirectional, 350kHz voltage-output current sense amplifier in a 10-pin VSSOP (DGS) package, part of the cost-optimized INAx181 family. It senses voltage drops across shunt resistors on low- or high-side rails and outputs a ground-referenced analog voltage proportional to load current. A current sense amplifier (also called a current-shunt monitor) is a specialized difference amplifier that extracts a small differential shunt voltage riding on a large common-mode voltage and converts it to a ground-referenced single-ended signal. Within the signal chain hierarchy it sits between the shunt resistor and an ADC or comparator, serving as a front-end element of power management and battery monitoring systems. Key features include a wide 2.7V to 26V common-mode range that is independent of the 2.7V to 5.5V supply, 350kHz bandwidth for fast load-transient monitoring, bidirectional operation with a reference pin for charging/discharging current measurement, and factory-calibrated gain options (A1 = 20 V/V, A2 = 50 V/V, A3 = 100 V/V, A4 = 500 V/V) that eliminate gain-setting resistors. The zero-drift architecture delivers low offset for small shunt voltages. The dual channels share one package, halving board area versus two single-channel monitors such as the INA181. Rail-to-rail output swings close to the supply rails, maximizing ADC dynamic range. All device options are specified from -40C to +125C. Typical applications include battery current monitoring in portable and industrial equipment, DC motor drive phase and bus current sensing, telecom and server power supply current telemetry, and load-current supervision in 12V/24V rails feeding TI C2000 or MSPM0 MCUs. Design tip: keep the shunt voltage in the 10 mV to 100 mV range at full load - large enough to swamp offset error, small enough to limit shunt power dissipation. Route Kelvin sense traces directly to the shunt pads to preserve accuracy.
INA2181A3IDGSR - 26V Dual-Channel Current Sense Amp | TI
The Texas Instruments INA2181A3IDGSR is a 26V, dual-channel, bidirectional voltage-output current sense amplifier with a fixed gain of 100 V/V (A3 version), 350 kHz bandwidth, and a common-mode input range of -0.2 V to +26 V, housed in a 10-pin VSSOP (DGS) package rated from -40C to +125C. A current sense amplifier (also called a current-shunt monitor) is a specialized difference amplifier that senses the small voltage drop across a shunt resistor and converts it into a ground-referenced output signal. Within the power-management IC hierarchy, it sits alongside voltage regulators and battery-management devices as a core building block of power monitoring and protection subsystems. Key features include the wide -0.2 V to +26 V common-mode range that operates independently of the supply voltage, enabling high-side and low-side sensing on 24 V industrial rails. The A3 gain option of 100 V/V with a 2 V/us output slew rate and 350 kHz bandwidth suits fast, medium-sensitivity current monitoring. Offset voltage is tightly specified: a maximum of plus/minus 150 uV at VCM = 0 V and plus/minus 500 uV at VCM = 12 V, according to the TI datasheet. The INAx181 architecture senses bidirectional current with an external reference voltage applied to the REF pin, allowing the output to be offset for positive and negative current indication. Rail-to-rail output swing maximizes ADC dynamic range on low-supply rails, and the cost-optimized design targets volume production. Typical applications include battery charging systems, 24 V industrial power supplies, motor drive DC bus monitoring, and telecom or server power-supply current telemetry where two channels share one shunt scheme or monitor two rails. Design consideration: keep the shunt resistor value and the A3 gain of 100 V/V balanced - a 10 mV full-scale shunt drop yields 1 V output, so size the shunt to use the ADC input range without exceeding the output swing limits. This page synthesizes distributor pricing, drop-in alternatives within the INAx181 family, and practical design notes not found in the manufacturer datasheet.
INA2181A4QDGSRQ1 - 26V Dual 350kHz Current Sense Amp AEC-Q100 | TI
The Texas Instruments INA2181A4QDGSRQ1 is an AEC-Q100 qualified, 26V, dual-channel, bidirectional current sense amplifier (also called a current-shunt monitor) with a 350 kHz bandwidth and a fixed gain of 200 V/V (A4 gain variant), housed in a 10-pin VSSOP (DGS) package. It senses voltage drops across current-sense resistors at common-mode voltages from -0.2 V to +26 V, independent of its own supply voltage, and provides a rail-to-rail voltage output. A current sense amplifier is a specialized difference amplifier, within the broader hierarchy of instrumentation amplifiers and operational amplifier signal-conditioning ICs, designed to measure the small differential voltage developed across a shunt resistor and convert it into a ground-referenced output voltage proportional to load current. Bidirectional devices like the INA2181 also detect current flowing in both directions, which is essential in battery charging and discharging monitoring. Key features of the INA2181A4QDGSRQ1 include the wide -0.2 V to 26 V common-mode range that survives automotive load-dump-adjacent conditions, dual-channel integration that halves board area versus two single-channel amplifiers, a 350 kHz bandwidth suitable for fast current-loop control, and the cost-optimized INAx181-Q1 family architecture. Technically, the INA2181-Q1 uses a zero-drift-free precision front end with a fixed gain set by internal resistors; the A4 variant provides 200 V/V gain, allowing very small shunt resistances (sub-10 mOhm) to be used, reducing shunt power dissipation at high currents. The voltage output architecture requires no ADC-side gain stage and simplifies interfacing with microcontroller ADC inputs. Typical applications include automotive battery management systems, 48V and 12V automotive power rails, industrial motor drives, telecom -48V systems, and server hot-swap current monitoring. Design-wise, place the shunt resistor close to the amplifier inputs, use Kelvin (4-wire) connections to the sense resistor, and filter differential noise at the inputs. Note that the 200 V/V gain limits full-scale shunt voltage to about 20 mV for a 4 V output swing. This page synthesizes distributor pricing, drop-in same-family gain-variant alternatives, and practical design notes not found in the manufacturer datasheet.
INA4180AIPWR-Q1 - Quad 26V Current Sense Amp, 20 V/V | TI
The Texas Instruments INA4180AIPWR-Q1 is an automotive-grade, quad-channel voltage-output current-sense amplifier (current-shunt monitor) in a 14-pin TSSOP (PW) package. It senses voltage drops across current-sense resistors at common-mode voltages from -0.2 V to +26 V, independent of the 1.7 V to 5.5 V supply, with a fixed gain of 20 V/V (A1 version) and 350 kHz bandwidth. A current-sense amplifier is a specialized difference amplifier that measures the small voltage developed across a shunt resistor and converts it into a ground-referenced output signal. Within the power-management IC hierarchy, it sits between the shunt element and an ADC or controller, enabling precise current monitoring for system control and protection in automotive and industrial power rails. Key features include the wide -0.2 V to 26 V common-mode range that survives load-dump and cold-crank conditions without external circuitry, four independent amplifiers in one package that reduce BOM cost and board area in multi-rail designs, rail-to-rail output for maximum ADC dynamic range, and offset voltage as low as [DATA_NEEDED: Vos]. The extended -40C to +125C operating range and AEC-Q100 qualification make it suitable for under-hood and body electronics applications. Architecturally, the INAx180 family integrates a precision matched resistor network that sets the gain (A1 = 20 V/V, A2 = 50 V/V, A3 = 100 V/V, A4 = 200 V/V), eliminating external gain-setting resistors and their matching errors. The zero-crossover-compatible input stage supports sensing on the low side or high side of the rail, and the output is referenced to ground regardless of common-mode voltage. Typical applications include automotive battery current monitoring, 48V and 12V board-net supervision, electric power steering motor current feedback, DC-DC converter current loops, and industrial PLC analog input modules. Cost-optimized designs benefit from the quad-channel integration. Design tip: choose the shunt resistor so the full-scale drop is 10-50 mV to balance accuracy against power dissipation, and use Kelvin (4-wire) connections to the shunt for best precision. Pricing shown as of 2026-08-29.
INA597IDGKT - Precision 2MHz Difference Amplifier | TI
The INA597IDGKT is a high-precision, wide-bandwidth difference amplifier from Texas Instruments, designed for cost-sensitive applications requiring accurate differential signal measurement. It integrates a precision operational amplifier with a matched resistor network, achieving a maximum offset voltage of 200 µV and an offset drift of 5 µV/°C. The device operates from a single supply of 4.5 V to 36 V or dual supplies of ±2.25 V to ±18 V, with a bandwidth of 2 MHz and a common-mode rejection ratio (CMRR) of 88 dB. Housed in an 8-pin VSSOP (DGK) package, the INA597IDGKT is suitable for space-constrained designs. A difference amplifier is a type of operational amplifier circuit that amplifies the voltage difference between two inputs while rejecting common-mode voltages. It is a fundamental building block in analog signal processing, often used in current sensing, bridge amplification, and precision measurement systems. The INA597 belongs to the broader category of instrumentation amplifiers, which are specialized for accurate differential signal acquisition in noisy environments. Key features of the INA597IDGKT include its low offset voltage and drift, which ensure accurate measurement over temperature, and its high CMRR of 88 dB, which rejects common-mode noise. The device also offers rail-to-rail output, allowing maximum dynamic range in single-supply applications. Its low power consumption makes it ideal for battery-powered and portable instrumentation. The INA597 uses TI's e-trim™ technology, which provides precision trimming of the internal resistor network to achieve excellent gain accuracy and temperature stability. The integrated resistors are laser-trimmed to maintain tight matching, ensuring consistent performance across the operating temperature range. The device is fully specified for operation from -40°C to +125°C, making it suitable for industrial and automotive environments. Typical applications include motor current sensing, battery management systems, and precision data acquisition. In motor control, the INA597IDGKT can measure the voltage across a shunt resistor to monitor current, providing feedback for closed-loop control. In battery management, it can sense charge/discharge currents with high accuracy. The device's wide supply range and rail-to-rail output also make it suitable for industrial process control and test equipment. When designing with the INA597IDGKT, ensure that the input common-mode voltage remains within the specified range to maintain linearity. The reference pin (REF) allows level shifting of the output, which is useful in single-supply applications where the output must be centered at a specific voltage. Proper PCB layout with short traces and adequate bypassing will optimize performance.
INA950-SEP - 80V Ultra-Precise Current-Sense Amp | TI
The INA950-SEP from Texas Instruments is a space-enhanced product (SEP) current-sense amplifier designed for ultra-precise current measurements in high-reliability applications. It senses the voltage drop across a shunt resistor over a wide common-mode range from 2.7V to 80V, making it ideal for high-side current sensing in systems with large supply voltages. The device operates from a single 2.7V to 5.5V supply while drawing only 370μA (typical) of quiescent current, and is available in the TSSOP-8 package. A current-sense amplifier is a specialized operational amplifier that measures current by amplifying the small differential voltage across a sense resistor while rejecting the common-mode voltage. It is a key building block in power management systems, enabling accurate monitoring of load currents, battery charging, and power supply health. The INA950-SEP belongs to the family of analog current-sense amplifiers, which are essential for closed-loop control and protection in industrial, automotive, and aerospace systems. Key features include a wide common-mode input range of 2.7V to 80V, a bandwidth of 1.1MHz, and ultra-precise gain accuracy. The device is designed for space applications, offering enhanced radiation tolerance and reliability. Its low quiescent current of 370μA minimizes power consumption, making it suitable for battery-powered and energy-harvesting systems. The TSSOP-8 package provides a compact footprint for space-constrained PCBs. Technically, the INA950-SEP uses a precision current-sense architecture that maintains high accuracy across temperature and supply variations. The wide common-mode range allows it to monitor currents on high-voltage rails without level shifting, simplifying system design. The 1.1MHz bandwidth enables fast transient response, which is critical for detecting overcurrent conditions in real time. Typical applications include high-side current sensing in power supplies, battery management systems, motor control, and load switches. In space applications, it is used for power monitoring in satellites and spacecraft, where reliability and precision are paramount. The device's wide common-mode range and low power consumption make it versatile for both high-voltage and low-power systems. When designing with the INA950-SEP, ensure that the shunt resistor is placed in the high-side path and that the common-mode voltage does not exceed the absolute maximum rating. Proper PCB layout with Kelvin connections to the shunt resistor is essential to minimize parasitic resistance and maintain measurement accuracy.
L9955 - Low Power Quad Operational Amplifier | National Semiconductor (TI)
The L9955 is a low-power quad operational amplifier from National Semiconductor (now part of Texas Instruments), designed for battery-powered and portable applications where low quiescent current is critical. It is offered in a 14-pin DIP or SOIC package, providing four independent op-amps in a single IC. The device operates from a single or dual supply, with a wide supply voltage range that accommodates 3V to 30V single-supply or ±1.5V to ±15V dual-supply configurations. An operational amplifier (op-amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, used in signal conditioning, filtering, and mathematical operations. The L9955 belongs to the category of low-power op-amps, which are optimized for minimal power consumption while maintaining adequate bandwidth and slew rate for general-purpose analog tasks. In the hierarchy of analog ICs, it sits under linear amplifiers, which are part of the broader power management and signal processing IC family. Key features of the L9955 include a low quiescent current of typically 0.4 mA per amplifier, a unity-gain bandwidth of 1 MHz, and a slew rate of 0.5 V/µs. It also offers a wide common-mode input voltage range that includes ground, making it suitable for single-supply operation. The output stage can swing close to the supply rails, maximizing dynamic range in low-voltage systems. These specifications make it an excellent choice for battery monitoring, sensor interfaces, and portable instrumentation. The L9955 uses a bipolar transistor architecture with internal frequency compensation, ensuring stability without external components. The input stage is designed for low offset voltage and low input bias current, which is essential for precision DC applications. The output stage is a class-AB push-pull configuration, providing low crossover distortion and the ability to drive capacitive loads up to 100 pF without oscillation. Typical applications include portable medical devices, battery-powered data loggers, and industrial process control loops. In a battery monitoring circuit, the L9955 can amplify the small voltage drop across a sense resistor, with its low quiescent current extending battery life. For sensor interfaces, the wide input range and rail-to-rail output allow direct connection to ADCs without additional level shifting. When designing with the L9955, ensure proper decoupling of the power supply pins with 0.1 µF ceramic capacitors placed close to the IC. The input common-mode range extends to ground, but for best performance, keep inputs within the specified range. The output can drive loads down to 2 kΩ, but for heavier loads, consider using a buffer stage to maintain linearity.
LM2904QDRQ1 - Dual 26V 700kHz Op Amp AEC-Q100 | TI
The Texas Instruments LM2904QDRQ1 is an automotive-grade, dual operational amplifier qualified to AEC-Q100, operating from a single supply of 3V to 26V (or dual supplies plus/minus 1.5V to plus/minus 13V) with a 700 kHz gain-bandwidth product in an 8-pin SOIC (D) package rated -40C to +125C. An operational amplifier (op amp) is a high-gain differential-input voltage amplifier and a fundamental analog building block within the signal-chain hierarchy: op amp -> amplifier IC -> analog/mixed-signal IC -> semiconductor. A dual op amp integrates two independent amplifiers in one package, cutting board space and BOM cost for multi-channel signal conditioning. Key features include a low 500 uA supply current per amplifier, a common-mode input range that includes ground (enabling true single-supply operation), internal frequency compensation, and output short-circuit protection. ESD protection exceeds 500 V per MIL-STD-883 Method 3015 and 200 V on the machine model, per the TI datasheet. Technically, the bipolar process yields a typical 2 mV input offset voltage (7 mV max) and 20 nA typical input bias current. The 0.3 V/us slew rate and 700 kHz GBW suit low-frequency sensor and control loops; the output swings close to the negative rail but is not rail-to-rail. Operation remains stable with moderate capacitive loads. Typical applications include automotive sensor signal conditioning (temperature, pressure, position), current sensing, active filters, DC motor control, and battery management front-ends, where the 26V rating allows direct operation from a 12V automotive battery rail with load-dump headroom. Design tip: decouple VCC with a 0.1 uF ceramic close to pin 8, keep the input common-mode below VCC-1.5V, and buffer high-impedance sources to limit offset errors. For new automotive designs requiring 36V ratings and tighter offset, consider the next-generation LM2904B-Q1 family.
LM324 - Quad Op-Amp, 3V-32V Single Supply | TI
The LM324 (LM324N in 14-pin PDIP) is a low-power quad operational amplifier from Texas Instruments featuring four independent, internally frequency-compensated, high-gain op amps with true differential inputs. It operates from a single 3.0V to 32V supply (or dual supplies up to +/-16V), with quiescent current roughly one-fifth that of standard op amps such as the MC1741 on a per-amplifier basis, making it a classic choice for cost-sensitive analog designs. A quad operational amplifier is a single integrated circuit containing four independent op amp stages sharing one power supply. Within the amplifier hierarchy, it belongs to the general-purpose op amp family, which underpins the broader category of linear amplifiers in the signal chain domain of analog semiconductor devices. Key features include single-supply operation down to 3.0V, a common-mode input range that includes ground, and output voltage swing that reaches near ground without external bias components. These characteristics eliminate the dual-supply requirement of conventional op amps such as the 741 family. Multi-sourcing across TI, onsemi, and STMicroelectronics makes the LM324 an industry-standard, second-source-safe solution. Internally, each amplifier uses a class-AB output stage with internal frequency compensation, giving unity-gain stability. The device serves DC gain blocks, transducer amplifiers, and active filters with reasonable accuracy, though its slew rate and gain-bandwidth product are modest, so it suits low-frequency (DC to tens of kHz) signal conditioning rather than fast audio or RF paths. Typical applications include transducer amplifier front ends, DC gain blocks, active filters, comparators and oscillators, battery-powered instrumentation, and level-shift circuits in industrial controls. Arduino and maker sensor boards frequently employ the LM324 for multi-channel analog conditioning because one package serves four channels. Design consideration: the LM324 output cannot swing to the positive rail - expect roughly 1.5V of headroom at load. For rail-to-rail output needs, consider TI TLV-series or LMV-series upgrades in newer designs.
LM324DT - Quad Operational Amplifier | STMicroelectronics
The LM324DT is a quad operational amplifier from STMicroelectronics, featuring four independent, high-gain, internally frequency-compensated op-amps designed to operate from a single power supply over a wide range of voltages. It operates from 3V to 32V (or ±1.5V to ±16V dual supply) and delivers a typical output current of 40mA per channel. The device is housed in a 14-pin SOIC package, making it suitable for space-constrained PCB designs. Data verified as of 2026-08-05. An operational amplifier (op-amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, used in analog signal conditioning, filtering, and mathematical operations. The LM324 is a classic general-purpose op-amp family, known for its low cost, wide supply range, and ability to operate with a single supply, making it a staple in analog electronics. It sits within the hierarchy: operational amplifier -> linear amplifier -> analog IC -> semiconductor. Key features include a wide supply voltage range (3V to 32V), low supply current (typically 700µA per amplifier), common-mode input voltage range including ground, and short-circuit protected outputs. The LM324DT also features true differential input stage, which allows the input to go below ground when operating from a single supply, and it has a typical gain-bandwidth product of 1.3MHz. These features make it versatile for many analog applications. The LM324 uses a bipolar transistor architecture with a class-AB output stage, providing low output saturation voltage and high output current capability. It has an input offset voltage of typically 2mV and input bias current of typically 20nA, which are adequate for many precision applications. The device is internally frequency compensated for unity-gain stability, eliminating the need for external compensation components. Typical applications include transducer amplifiers, DC gain blocks, active filters, and general-purpose signal conditioning in industrial, automotive, and consumer electronics. Its single-supply operation makes it ideal for battery-powered devices and automotive sensor interfaces where a negative rail is not available. When designing with the LM324DT, ensure proper decoupling of the power supply pins with a 0.1µF ceramic capacitor close to the device. The output can swing close to the positive rail but not to the negative rail (ground) when using a single supply, so consider the output voltage range in your design. Also, avoid exceeding the absolute maximum supply voltage of 32V to prevent damage. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the STMicroelectronics datasheet, providing a comprehensive resource for engineers selecting the LM324DT.
LM324QDRQ1 - Automotive Quad Op Amp, 1MHz, RRO | TI
The Texas Instruments LM324QDRQ1 is an automotive-qualified quad operational amplifier delivering a 1 MHz gain-bandwidth product and rail-to-rail output (RRO) swing in a 14-pin SOIC (D) surface-mount package. It operates from a single supply of 2.7 V to 5.5 V (or dual supplies of +/-1.35 V to +/-2.75 V), making it well suited to battery-powered and low-voltage automotive systems. An operational amplifier (op amp) is a high-gain differential-input voltage amplifier and one of the most fundamental building blocks in analog electronics, used for signal conditioning, active filtering, and mathematical operations. Within the analog IC hierarchy, general-purpose op amps belong to linear integrated circuits, alongside comparators, voltage references, and voltage regulators. Quad op amps like this device integrate four matched amplifiers on a single die, saving board space and improving channel matching in multi-channel signal chains. Key features include rail-to-rail output swing that maximizes dynamic range at low supply voltages, a maximum input offset voltage of 4 mV, and a typical common-mode rejection ratio (CMRR) of 65 dB. Each amplifier draws approximately 100 uA of quiescent current, enabling low-power designs, while internal frequency compensation guarantees unity-gain stability without external components. Technically, the device uses bipolar process technology for good linearity, includes short-circuit protection and output current limiting for robustness, and specifies output current capability of around 160 mA per channel under rated conditions per distributor data. The AEC-Q100 qualification and wide temperature rating make it suitable for harsh automotive environments with 3.3 V and 5 V microcontroller-based systems. Typical applications include automotive sensor signal conditioning (temperature, pressure, and position sensors), battery management system monitoring front-ends, and motor control circuits paired with MCUs such as TI C2000 and MSPM0 families. Design tip: decouple the supply pin with a 0.1 uF ceramic capacitor placed close to the device, and respect the input common-mode range, which extends from ground to VCC - 1.5 V, to avoid phase-reversal and nonlinear behavior near the upper rail.
LM324QT - Quad Low Power Op Amp, 1.3MHz | STMicroelectronics
The LM324QT from STMicroelectronics is a quad general-purpose operational amplifier in a compact 16-pin QFN (3x3 mm) package. It operates from a single power supply over a wide voltage range, making it ideal for space-constrained, battery-powered applications. The device features four independent, high-gain, frequency-compensated amplifiers with a gain bandwidth product of 1.3 MHz and a slew rate of 0.4 V/us. An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output. It is the fundamental building block of analog signal conditioning, used in filters, comparators, integrators, and many other circuits. The LM324QT belongs to the LM324 family, a classic industry-standard quad op amp known for its low power consumption and wide supply range, which includes the ability to operate from a single supply down to 3V. Key features include a wide gain bandwidth of 1.3 MHz, a large voltage gain of 100 dB, and a very low supply current per amplifier of 375 uA. The input common-mode voltage range includes ground, allowing single-supply operation with ground-referenced inputs. The device also features low input bias current and internal frequency compensation, simplifying design and reducing external component count. The LM324QT uses a bipolar process technology, providing robust performance over a wide temperature range. The QFN package offers excellent thermal performance and a small footprint, making it suitable for compact designs. The device is designed for low-power operation, making it ideal for battery-powered equipment where power efficiency is critical. Typical applications include sensor signal conditioning, active filters, DC gain blocks, and transducer amplifiers. The wide supply voltage range and low power consumption make it suitable for automotive, industrial, and consumer electronics. The QFN package is particularly well-suited for portable devices where board space is at a premium. When designing with the LM324QT, ensure proper decoupling of the power supply pins with a 0.1 uF ceramic capacitor placed close to the device. The input common-mode range includes ground, but for best performance, keep inputs within the specified range. The output can swing close to the rails, but avoid driving loads that require rail-to-rail output swing without proper design considerations.
LM358ADDR - Dual 30V 700kHz Op Amp | Texas Instruments
The LM358ADDR is a dual operational amplifier from Texas Instruments, part of the industry-standard LM358 family. It operates from a single supply of 3V to 30V or dual supplies of +/-1.5V to +/-15V, with a typical supply current of 500uA per amplifier, packaged in an 8-pin SOIC (D) surface-mount package delivered in tape and reel. An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output. It is a fundamental building block of analog electronics used in signal conditioning, filtering, and mathematical operations. The LM358 is a dual op amp containing two independent amplifiers in one package, offering design flexibility and space savings. It belongs to the broader category of linear integrated circuits (amplifier ICs) used across power management, sensor interfaces, and audio processing. Key features include a common-mode input voltage range that extends to ground, enabling true single-supply operation with inputs referenced to ground. The gain-bandwidth product is 700kHz with a 0.3V/us slew rate, and maximum input offset voltage is 3mV. The operating temperature range is 0C to 70C for commercial applications. The device is RoHS compliant and lead-free. Technically, the LM358 uses a bipolar process with a class-AB output stage for low output distortion. The PNP input pair enables the input common-mode range to include ground. The output swings close to but not rail-to-rail, a consideration for maximum-swing designs. Internal frequency compensation ensures unity-gain stability without external components. Typical applications include transducer amplifiers, DC gain blocks, active filters, battery chargers, power supply control, and motor control loops. The dual configuration handles multiple signal paths in a compact footprint, reducing board space and component count. When designing with the LM358ADDR, ensure input voltage does not exceed the supply rails to avoid phase reversal, decouple supply pins with 0.1uF capacitors, and account for output swing typically 1.5V from the rails. Pricing as of 2026-08-29 starts near $0.0541 at LCSC.
LM358DR - Dual 700kHz General Purpose Op Amp | Texas Instruments
The LM358DR is a dual operational amplifier from Texas Instruments in an 8-pin SOIC (D) surface-mount package. It operates from a single supply of 3V to 32V or dual supplies of ±1.5V to ±16V, with a gain bandwidth product of 700 kHz and a slew rate of 0.3 V/µs. This industry-standard, low-cost amplifier serves a vast range of general-purpose analog functions. An operational amplifier (op amp) is a high-gain differential-input, single-ended-output voltage amplifier and one of the most fundamental building blocks in analog electronics. General-purpose op amps like the LM358 prioritize versatility, low cost, and ease of use over precision or bandwidth. The LM358 is the dual version of the LM321 single amplifier and the two-amp counterpart of the quad LM324. Key features include a common-mode input voltage range that extends to ground, enabling direct sensing near ground in single-supply systems; low supply current of 0.7 mA typ, independent of supply voltage; internal frequency compensation for unity-gain stability; and short-circuit protected outputs. These characteristics suit battery-powered and cost-sensitive designs. Technically, the LM358 uses a bipolar process with a class-AB output stage that can drive loads as low as 2 kΩ with a large output swing. The commercial temperature grade is 0°C to +70°C. Input bias and offset currents are low, and the two internal amplifiers are well matched, sharing the same supply and bias circuitry. Typical applications include transducer amplifier front ends, DC gain blocks, active RC filters, voltage comparators and level shifters, power-supply feedback loops, and portable or industrial control electronics. The SOIC-8 package supports automated SMT assembly and reflow. Design considerations: decouple V+ to GND with a 0.1 µF ceramic capacitor close to pin 8, and respect output swing limits near the rails (output saturates roughly 1.5V below V+ at moderate loads). For higher bandwidth or lower noise, consider the pin-compatible TLV9152 or TL072. Pricing as of 2026-08-30 starts around $0.05 at volume from distributors such as LCSC.