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Productos (510)
AD647SH/883B - Dual JFET Op Amp, 250uV, 1MHz | Analog Devices
The AD647SH/883B is a dual, ultralow drift JFET-input operational amplifier manufactured by Analog Devices, now supplied by Rochester Electronics. It is designed for high-precision instrumentation and signal conditioning applications where low offset voltage, low input bias current, and low drift are critical. The device operates from dual supplies and is available in a hermetic TO-99 metal can package, ensuring excellent long-term stability and reliability in harsh environments. 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 in analog electronics, used in configurations such as inverting, non-inverting, differential, and instrumentation amplifiers. The JFET-input architecture provides very high input impedance and extremely low input bias current, making it ideal for interfacing with high-impedance sources such as sensors, photodiodes, and precision measurement circuits. The AD647SH/883B belongs to the family of precision op amps, which are characterized by low offset voltage, low noise, and low drift over temperature. Key features of the AD647SH/883B include a maximum input offset voltage of 250 µV, a gain-bandwidth product of 1 MHz, and an input bias current of 35 pA. The device also offers a slew rate of [DATA_NEEDED: slew rate] and operates over a supply voltage range of [DATA_NEEDED: supply voltage range]. The dual-channel configuration saves board space and reduces component count in multi-channel systems. The TO-99 package provides a hermetic seal, protecting the die from moisture and contaminants, which is essential for military and aerospace applications. The AD647SH/883B is built using Analog Devices' precision bipolar and JFET process technology, which combines the low offset and drift of bipolar transistors with the high input impedance of JFETs. This architecture achieves a typical input offset voltage drift of [DATA_NEEDED: offset voltage drift] and a common-mode rejection ratio of [DATA_NEEDED: CMRR]. The device is fully specified over the military temperature range of -55°C to +125°C, making it suitable for defense and space systems. Typical applications include precision data acquisition systems, medical instrumentation, test and measurement equipment, and active filters. The low input bias current allows direct connection to high-impedance sensors without significant loading errors. The dual-channel design is particularly useful for stereo audio processing and multi-channel industrial control loops. When designing with the AD647SH/883B, ensure proper supply decoupling with 0.1 µF ceramic capacitors close to the supply pins. The TO-99 package requires careful handling to avoid damage to the leads. For high-impedance circuits, a guard ring around the input pins can reduce leakage currents and improve performance.
AD704TQ/883B - Quad Picoampere Input Op Amp | Analog Devices
The AD704TQ/883B is a quad, low power bipolar operational amplifier from Analog Devices that achieves the low input bias current of a BiFET amplifier while offering significantly lower input bias current drift over temperature. It is designed for high DC precision applications, featuring a maximum offset voltage of 75 µV, a maximum offset voltage drift of 0.5 µV/°C, and a maximum input bias current of 150 pA. The device operates from dual supplies up to ±18V and is available in a 14-pin ceramic DIP (CDIP) package, qualified to MIL-STD-883B for military and aerospace applications. 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 AD704TQ/883B is a quad op amp, meaning it contains four independent amplifiers in one package, saving board space and cost. It belongs to the family of precision bipolar op amps, which are distinguished by their low offset voltage, low drift, and low noise, making them suitable for instrumentation and measurement systems. Key features of the AD704TQ/883B include high DC precision with 75 µV maximum offset voltage, 0.5 µV/°C maximum offset voltage drift, and 150 pA maximum input bias current. It also offers low noise of 0.5 µV p-p typical at 10 Hz and low power consumption with a maximum supply current of 600 µA per amplifier. The device is specified for operation over the military temperature range of -55°C to +125°C, and its MIL-STD-883B qualification ensures reliability in harsh environments. The AD704TQ/883B uses superbeta bipolar input transistors to achieve picoampere input bias currents, which are typically associated with BiFET amplifiers but with lower drift. This architecture provides excellent DC accuracy and stability over temperature, making it ideal for precision analog circuits. The quad configuration allows for compact designs in multi-channel systems, reducing component count and improving matching between channels. Typical applications include precision instrumentation, data acquisition systems, active filters, and military/aerospace electronics where high accuracy and reliability are critical. The low input bias current and low drift make it suitable for high-impedance sensor interfaces, such as photodiode amplifiers and pH probe buffers. The wide supply voltage range and low power consumption also enable battery-powered portable instruments. When designing with the AD704TQ/883B, consider the input common-mode voltage range and ensure proper decoupling of the power supplies. The device's low input bias current allows the use of high-value feedback resistors, but care must be taken to minimize leakage currents from PCB contamination. For best performance, use guard rings around the input pins and maintain a clean, low-humidity environment.
AD734ANZ - 10MHz 4-Quadrant Analog Multiplier/Divider | ADI
The Analog Devices AD734ANZ is an accurate, high-speed 4-quadrant analog multiplier and divider that delivers 10 MHz full-power bandwidth, a 450 V/µs slew rate, and ±0.1% typical multiplication error in a 14-pin PDIP (N-14) through-hole package. Its transfer function is W = (XY)/U, where X, Y, and U are differential voltage inputs and W is the low-impedance voltage output capable of swinging 20 V peak-to-peak into a load. An analog multiplier is a fundamental signal-processing building block that performs real-time multiplication of two continuous-time analog signals, and is used as the core cell inside gain-controlled amplifiers, modulators, RMS-to-DC converters, squarers, frequency doublers, and dividers. Multipliers are a sub-category of analog computational ICs alongside log/antilog amplifiers, true-RMS converters, and analog multipliers/dividers, all of which sit within the broader signal-conditioning and data-conversion hierarchy. The 4-quadrant designation means that the inputs X, Y, and U may each be positive or negative, and the output W may therefore be positive or negative, enabling two-polarity signal processing without external offset shifting. Key features of the AD734ANZ include pin-compatibility with the legacy industry-standard AD534, on-board thin-film laser-trimmed resistors that yield 0.1% typical accuracy without user adjustment, differential X, Y, and U inputs with high common-mode rejection, a low-impedance output capable of driving heavy loads, and a 200 ns settling time to 0.1% at full power. The supply range of ±8 V to ±16.5 V makes it suitable for both ±12 V industrial systems and ±15 V instrumentation rails. The AD734's architecture is built around three translinear cells and a high-gain output op amp, with on-chip laser-trimmed thin-film resistors that eliminate the external gain-setting components required by older multipliers such as the AD534. The low-impedance output stage can deliver full 20 V p-p directly into low-impedance loads, removing the need for an external buffer in most applications. Compared with the AD633 and MPY634, the AD734 is materially faster (10 MHz vs ~1 MHz) and supports a true divider mode through its U input. Typical applications include high-speed precision multipliers, dividers, and squarers in instrumentation; voltage-controlled amplifiers (VCAs) and automatic gain control (AGC) loops in audio and RF; balanced modulators and demodulators in communications; true-RMS converters when paired with a squaring circuit; and waveform generators. The wide bandwidth also makes it suitable for adaptive filters and real-time signal-conditioning blocks. When designing with the AD734ANZ, observe the supply-rail decoupling guidelines: place 100 nF ceramic capacitors as close as possible to both supply pins and use bulk decoupling on the analog rails. The U input (denominator) must remain inside its linear input range (typically ±10 V) to avoid divider saturation; unused inputs should be tied to a defined voltage (typically ground) rather than left floating.
AD811SQ/883B - 120MHz Video Op Amp | Analog Devices | 8-CERDIP
The AD811SQ/883B is a high-performance video operational amplifier from Analog Devices, designed for broadcast-quality video systems. It features a -3 dB bandwidth of 120 MHz at a gain of +2, with differential gain and phase of 0.01% and 0.01° (RL = 150 Ω). The device is packaged in an 8-pin CERDIP (SQ) package and is qualified to MIL-STD-883 Class B, making it suitable for military and aerospace applications. A video operational amplifier is a type of op amp optimized for processing video signals, providing wide bandwidth, high slew rate, and low differential gain/phase errors. It is a subset of operational amplifiers, which are fundamental building blocks in analog signal processing. The AD811SQ/883B belongs to the category of current feedback amplifiers, which offer superior slew rate and bandwidth at higher gains compared to voltage feedback amplifiers. Key features include a 0.1 dB gain flatness to 35 MHz (G = +2), a slew rate of 2500 V/μs, and a supply current of 16.5 mA. The device operates from dual supplies of ±4.5 V to ±18 V, with an output current of 100 mA. Its high bandwidth and low distortion make it ideal for video distribution, cable drivers, and professional video equipment. The AD811SQ/883B uses a current feedback architecture, which provides excellent large-signal bandwidth and fast settling time. The device is designed to drive 150 Ω loads, typical for video cables, and maintains low differential gain and phase errors, ensuring accurate color reproduction in video signals. The MIL-STD-883B qualification ensures high reliability in harsh environments. Typical applications include video line drivers, RGB distribution amplifiers, and professional video cameras. The device is also used in military avionics displays and radar systems where high-speed analog signal processing is required. Its wide supply range and robust design make it suitable for both commercial and military-grade equipment. When designing with the AD811SQ/883B, ensure proper power supply decoupling with 0.1 μF ceramic capacitors close to the supply pins. The device's high bandwidth requires careful PCB layout to minimize parasitic capacitance and inductance, which can degrade performance. Additionally, the output stage can drive capacitive loads, but a series resistor may be needed to maintain stability.
AD820ARZ - Single-Supply FET Op Amp | Analog Devices
The AD820ARZ is a precision, low power, FET input operational amplifier from Analog Devices, offered in an 8-lead SOIC package. It operates from a single supply of 5 V to 36 V or dual supplies of ±2.5 V to ±18 V, with true single-supply capability and an input voltage range extending below the negative rail. This rail-to-rail output amplifier delivers a gain bandwidth of 1.9 MHz and a slew rate of 3 V/µs, making it suitable for a wide range of precision analog applications. 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 AD820 belongs to the FET-input op amp family, which uses junction field-effect transistors (JFETs) at the input stage to achieve very high input impedance and low input bias current. This makes it ideal for interfacing with high-impedance sensors and sources without loading them. As a rail-to-rail output device, it can swing its output close to both supply rails, maximizing dynamic range in single-supply systems. Key features of the AD820ARZ include a low input bias current of 2 pA (typical), low offset voltage of 100 µV (typical), and a supply current of 700 µA per amplifier. It also features a wide input common-mode range that includes the negative rail, enabling it to sense signals near ground in single-supply operation. The device is specified over the industrial temperature range of -40°C to +85°C and is RoHS compliant. Technically, the AD820 uses a precision bipolar/JFET process, combining the low noise and high speed of bipolar transistors with the high input impedance of JFETs. The output stage is a rail-to-rail class AB design that provides low distortion and high output drive capability. The amplifier is internally compensated for unity-gain stability, simplifying its use in buffer and follower configurations. Typical applications include battery-powered instrumentation, portable medical devices, sensor signal conditioning, and active filters. Its low power consumption and wide supply range make it particularly suited for portable and industrial equipment where power efficiency and signal integrity are critical. When designing with the AD820ARZ, ensure proper decoupling of the supply pins with 0.1 µF ceramic capacitors placed close to the device. For best performance, avoid routing high-impedance inputs near noisy traces, and consider using a ground plane to minimize noise pickup.
AD8221ARZ - Precision Instrumentation Amplifier | Analog Devices
The AD8221ARZ is a precision instrumentation amplifier from Analog Devices, offering the industry's highest common-mode rejection ratio (CMRR) over frequency in its class. It is a gain-programmable, high-performance amplifier that maintains excellent CMRR beyond 200 Hz, where competing instrumentation amplifiers typically degrade. The device is available in an 8-lead SOIC package and operates over a wide supply range, making it suitable for a variety of precision measurement applications. An instrumentation amplifier is a type of differential amplifier that amplifies the difference between two input signals while rejecting common-mode voltages. It is characterized by high input impedance, low offset voltage, and high CMRR, making it ideal for precise sensor signal conditioning. Instrumentation amplifiers are a subset of operational amplifiers, which are fundamental building blocks in analog signal processing, and they are widely used in medical, industrial, and automotive applications. Key features of the AD8221ARZ include a low input offset voltage of 60 µV, a low input bias current of 500 pA, and a bandwidth of 825 kHz. The device also offers a slew rate of 2 V/µs, ensuring fast response in dynamic measurement systems. The gain is set by a single external resistor, allowing flexible configuration from 1 to 1000. The high CMRR of 90 dB at 60 Hz (minimum) and 80 dB at 10 kHz (minimum) ensures accurate rejection of power-line interference and high-frequency noise. The AD8221ARZ is designed with a three-op-amp architecture, providing excellent DC and AC performance. The input stage uses super-beta transistors to achieve low bias current, while the output stage drives loads up to 10 kΩ. 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 quiescent current of 1.2 mA. The wide supply range and low power consumption make it suitable for battery-powered and industrial applications. Typical applications include medical instrumentation (ECG, EEG), industrial process control, bridge amplifiers, and data acquisition systems. The AD8221ARZ is also used in precision sensor interfaces, where its low offset and high CMRR are critical for accurate measurements. Its small SOIC package and surface-mount design enable compact PCB layouts. When designing with the AD8221ARZ, ensure proper grounding and decoupling to maintain high CMRR. Use a 0.1 µF capacitor close to the supply pins and a 10 µF tantalum capacitor for low-frequency decoupling. The reference pin (pin 5) can be used to level-shift the output, which is useful in single-supply applications.
AD8223ARZ - Single-Supply Instrumentation Amplifier | Analog Devices
The AD8223ARZ is a single-supply, low-cost instrumentation amplifier from Analog Devices, designed for precision signal conditioning in medical and industrial applications. It operates from a single supply of +3.0 V to +25 V (or dual supplies of ±1.5 V to ±12.5 V) and delivers rail-to-rail output swing. The device is available in an 8-lead SOIC package (8-SOIC, 0.154" width) and conforms to the industry-standard 8-lead pinout configuration. An instrumentation amplifier (in-amp) is a type of differential amplifier that amplifies the difference between two input signals while rejecting common-mode voltages. It is characterized by high input impedance, high common-mode rejection ratio (CMRR), and low offset voltage, making it ideal for precise measurement of small signals in the presence of large common-mode noise. In the signal chain hierarchy, an instrumentation amplifier is a specialized operational amplifier (op-amp) configuration, often used as the front-end of data acquisition systems, sensor interfaces, and medical monitoring equipment. Key features of the AD8223ARZ include a gain set by a single external resistor, with a default gain of 5 when no resistor is used. The gain can be programmed from 5 to 1000, providing flexibility for various sensor outputs. The device offers a bandwidth of 200 kHz at gain of 5, and a low input offset voltage of 50 µV (max). It also features a high CMRR of 90 dB (min) at gain of 10, ensuring excellent rejection of common-mode interference. The rail-to-rail output swing allows maximum dynamic range in single-supply applications. Technically, the AD8223 uses a classic three-op-amp instrumentation amplifier architecture, but optimized for single-supply operation. The input stage provides high impedance and low bias current, while the output stage delivers rail-to-rail swing. The device is laser-trimmed for low offset and drift, ensuring accuracy over temperature. It operates over the industrial temperature range of -40°C to +85°C, making it suitable for harsh environments. Typical applications include medical instrumentation (ECG, EEG, blood pressure monitors), industrial process control (pressure, temperature, and strain gauge sensors), and precision data acquisition systems. The single-supply capability and low cost make it an attractive choice for battery-powered and portable devices. When designing with the AD8223ARZ, ensure proper decoupling of the power supply pins with 0.1 µF ceramic capacitors placed close to the device. The reference pin (pin 5) can be used to level-shift the output, allowing the amplifier to interface with ADCs that have a specific input range. For best performance, use precision resistors for the gain-setting resistor to maintain gain accuracy.
AD8223BRMZ - Single-Supply Rail-to-Rail INA, 200kHz | Analog Devices
The Analog Devices AD8223BRMZ is a single-supply, rail-to-rail output instrumentation amplifier (INA) housed in an 8-pin MSOP package with a 200 kHz bandwidth and a single-resistor gain setting from 5 to 1000. Designed for low-cost precision signal conditioning, it operates from a single +3.0 V to +25 V supply and delivers rail-to-rail output swing on the output stage, with inputs that swing 150 mV below the negative rail. An instrumentation amplifier is a precision differential amplifier that combines high common-mode rejection ratio (CMRR), high input impedance, and a user-programmable gain set by a single external resistor. The AD8223 belongs to the broad category of linear amplifier ICs (hypernyms: instrumentation amplifier -> precision amplifier -> operational amplifier -> analog IC -> semiconductor), and within Analog Devices' portfolio it occupies the entry-level low-cost node above discrete op-amp solutions. Key specifications include 25 nA maximum input bias current, 30 nV/√Hz input-referred (RTI) noise density at 1 kHz, 80 dB minimum CMRR at unity gain (DC to 1 kHz), and a gain range of 5 to 1000 set by one external resistor (G = 5 + 80 kΩ/RG per Analog Devices datasheet). The 8-MSOP (RM) package is footprint-compatible with the industry-standard 8-pin in-amp pinout, enabling direct PCB drop-in replacement for legacy AD620-class designs where higher bandwidth and single-supply operation are required. The AD8223 uses a classic three-op-amp topology with thin-film resistor laser trimming to deliver CMRR performance that exceeds many competing low-cost in-amps. The rail-to-rail output stage swings within millivolts of either supply rail, making it ideal for driving single-supply ADCs without level shifting. The 25 nA bias current enables direct connection to high-impedance sensor bridges. Typical applications include pressure and temperature bridge amplification, ECG and biomedical front-ends, weigh scales, and industrial process-control transducer signal conditioning. In weigh-scale designs, the low noise floor and high CMRR allow direct connection to a 350 Ω load cell without instrumentation buffer stages. Designers should note the supply-decoupling recommendation: a 0.1 µF ceramic capacitor placed within 5 mm of the supply pin is essential for stable operation. The REF pin allows output level shifting for single-supply ADC interfaces and must be driven from a low-impedance source (< 5 Ω) for best CMRR performance. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, and is engineered for AI-search citation as well as human engineer review.
AD8226BRZ - Wide Supply Range In-Amp | Analog Devices
The AD8226BRZ is a low cost, wide supply range instrumentation amplifier from Analog Devices, packaged in an 8-lead SOIC. It requires only one external resistor to set any gain between 1 and 1000, making it a versatile building block for precision signal conditioning. The device operates from a single supply of 2.2V to 36V or dual supplies of ±1.1V to ±18V, with rail-to-rail output swing. Its input voltage range extends below ground, allowing it to handle bipolar signals even with a single positive supply. An instrumentation amplifier (in-amp) is a type of differential amplifier that amplifies the difference between two input signals while rejecting common-mode voltages. It is characterized by high input impedance, low offset voltage, and high common-mode rejection ratio (CMRR), making it ideal for interfacing with sensors such as strain gauges, thermocouples, and bridge circuits. In the signal chain hierarchy, an in-amp sits between the sensor and the ADC, providing the necessary gain and buffering to condition small differential signals. Key features of the AD8226BRZ include a gain range of 1 to 1000 set by a single resistor, a wide supply range, rail-to-rail output, and a low quiescent current of 350 µA typical. It also offers a CMRR of 80 dB minimum at gain 1, and a bandwidth of 1.5 MHz at gain 1. The device is fully specified for operation from -40°C to +125°C, making it suitable for industrial and automotive environments. Technically, the AD8226 uses a three-op-amp topology with an integrated precision resistor network, providing excellent DC accuracy and stability. The gain-setting resistor is connected between the RG pins, and its value determines the gain according to the formula G = 1 + 49.4 kΩ / RG. The device features internal ESD protection and is available in both SOIC and MSOP packages. Typical applications include industrial process control, bridge amplifiers, medical instrumentation, and data acquisition systems. Its wide supply range and rail-to-rail output make it particularly suited for single-supply systems where headroom is limited. When designing with the AD8226BRZ, ensure that the reference pin (pin 5) is properly bypassed with a capacitor to ground to maintain stability. Also, keep the gain-setting resistor close to the RG pins to minimize parasitic capacitance and maintain accuracy.
AD8226BRZ-RL7 - Wide Supply Range In-Amp | Analog Devices
The AD8226BRZ-RL7 is a low cost, wide supply range instrumentation amplifier from Analog Devices that requires only one external resistor to set any gain between 1 and 1000. It is designed to work with a variety of signal voltages, featuring a wide input range and rail-to-rail output. The device operates from dual supplies of ±2.25 V to ±18 V or a single supply of 4.5 V to 36 V, making it versatile for both battery-powered and industrial applications. Housed in an 8-lead SOIC package (BRZ suffix), the AD8226BRZ-RL7 is supplied in tape and reel packaging for automated assembly. An instrumentation amplifier (in-amp) is a precision differential amplifier with high input impedance and high common-mode rejection, used to amplify small signals in the presence of large common-mode voltages. It is a key building block in precision analog signal chains, often following a sensor bridge or transducer, and preceding an ADC. The AD8226 belongs to the family of instrumentation amplifiers, which are a subset of operational amplifiers optimized for differential measurement. Key features of the AD8226 include a gain range of 1 to 1000 set by a single external resistor, rail-to-rail output swing, and a wide input voltage range that includes below ground. The device also offers excellent AC and DC performance, with a typical gain error of 0.1% (max) and gain drift of 10 ppm/°C (max). Quiescent current is only 350 µA (typical), making it suitable for low-power, battery-operated equipment. The AD8226 is specified over the extended industrial temperature range of -40°C to +125°C. Technically, the AD8226 uses a three-op-amp topology with a precision laser-trimmed resistor network, ensuring high accuracy and stability. The input stage provides high common-mode rejection, while the output stage delivers rail-to-rail swing. The device is fully specified for both single and dual supply operation, and its input range extends below the negative rail, allowing it to handle signals that go slightly below ground. Typical applications include industrial process control, bridge amplifiers, medical instrumentation, and data acquisition systems. The AD8226 is ideal for amplifying small differential signals from sensors such as strain gauges, thermocouples, and current shunt monitors. Its wide supply range and low power make it suitable for portable and battery-operated equipment. When designing with the AD8226, ensure that the reference pin is properly driven to set the output common-mode voltage, and use a precision resistor for gain setting to maintain accuracy. Bypass the supply pins with 0.1 µF ceramic capacitors close to the device to ensure stability.
AD8227ARZ - Wide Supply Range In-Amp | Analog Devices
The AD8227ARZ is a low cost, wide supply range instrumentation amplifier from Analog Devices that requires only one external resistor to set any gain between 5 and 1000. It is designed to work with a variety of signal voltages, featuring a wide input range and rail-to-rail output. The device is packaged in an 8-lead SOIC (SOIC-8) and operates over a wide supply range, making it suitable for industrial, medical, and automotive applications. An instrumentation amplifier (in-amp) is a type of differential amplifier that amplifies the difference between two input signals while rejecting common-mode voltages. It is a key building block in precision measurement systems, where it conditions small sensor signals before analog-to-digital conversion. In-amps are characterized by high input impedance, high common-mode rejection ratio (CMRR), and low offset voltage, making them ideal for bridge sensors, thermocouples, and other low-level signal sources. Key features of the AD8227ARZ include a gain range of 5 to 1000 set by a single external resistor, a wide supply range of ±2.25 V to ±18 V (or 4.5 V to 36 V single supply), and a rail-to-rail output stage. It offers a 3 dB bandwidth of 250 kHz at G = 5, a slew rate of 1.2 V/µs, and an input bias current of 27 nA. The device also features low offset voltage and drift, ensuring accurate signal conditioning over temperature. The AD8227 uses a classic three-op-amp architecture with a precision laser-trimmed resistor network, providing excellent CMRR and gain accuracy. The rail-to-rail output allows maximum dynamic range in single-supply applications, while the wide supply range accommodates both 5 V and ±15 V systems. The SOIC-8 package is industry-standard, enabling easy PCB layout and drop-in replacement in many designs. Typical applications include industrial process control, bridge amplifiers, medical instrumentation, and data acquisition systems. The AD8227ARZ is particularly suited for applications requiring high accuracy over a wide input voltage range, such as motor control current sensing and battery monitoring. When designing with the AD8227ARZ, ensure proper decoupling of the power supply pins with 0.1 µF ceramic capacitors placed close to the device. The gain-setting resistor should be a precision resistor with low temperature coefficient to maintain gain accuracy. For best CMRR performance, keep the input traces balanced and shielded.
AD8227ARZ-RL7 - Wide Supply In-Amp | Analog Devices
The Analog Devices AD8227ARZ-RL7 is a low cost, wide supply range instrumentation amplifier supplied in an 8-lead SOIC package on tape and reel. It needs only one external resistor to set any gain between 5 and 1000. According to the AD8227 datasheet (Rev. 0), the amplifier operates from dual supplies spanning ±1.5 V to ±18 V, or a single supply from 2.2 V to 36 V, and provides a rail-to-rail output stage. Because the input range can extend below the negative supply, small ground-referenced signals can be amplified without dual supplies, simplifying system power architectures. An instrumentation amplifier (in-amp) is a precision differential amplifier with high common-mode rejection, typically used to extract small signals from sensors, bridges, or transducers in the presence of common-mode noise. It sits above the general category of operational amplifiers and is a key building block of signal-conditioning chains for analog-to-digital converters. The AD8227 belongs to this product hierarchy: instrumentation amplifier -> precision amplifier -> analog signal conditioning -> integrated circuit. Its single-resistor gain programming and balanced pinout make it easy to apply in factory automation, medical monitors, and automotive modules. Key features include the 5-to-1000 gain range, wide dual/single supply operation, rail-to-rail output swing, and a REF pin protected by ESD diodes for level shifting into single-supply ADCs. The A grade (ARZ) exhibits about 27 nA typical input bias current, while the B grade (BRZ) improves this to 20 nA. The input common-mode range and the ability to drive rail-to-rail outputs allow the signal to make full use of supply rails. From an architecture perspective, the AD8227 is a three-op-amp style instrumentation amplifier enhanced for wide supply and low cost. It merges a precision front end with an output stage capable of sensing the negative rail, making it suitable for systems that only have one power supply. This low-cost approach is aimed at high-volume industrial and consumer measurement applications where price matters, but CMRR and gain accuracy cannot be sacrificed. Typical applications include load-cell and strain-gauge bridge conditioning, industrial current-shunt monitoring, medical biosignal acquisition, automotive sensor interfaces, and ADC driver circuits where the REF pin shifts the output. The wide input range and single-supply compatibility make it a versatile choice for mixed-signal boards. When designing with this part, remember to keep the external gain resistor close to the RG pins with low thermal drift, and never drive the REF pin more than 0.3 V beyond the supplies. These simple precautions preserve gain accuracy and prevent ESD diode conduction.
AD8227BRZ - Wide Supply Range In-Amp | Analog Devices
The AD8227BRZ is a low cost, wide supply range instrumentation amplifier from Analog Devices that requires only one external resistor to set any gain between 5 and 1000. It is designed to work with a variety of signal voltages, featuring a wide input range and rail-to-rail output. The device operates from dual supplies of ±2.25 V to ±18 V or single supplies of 4.5 V to 36 V, making it versatile for industrial and medical applications. Housed in an 8-lead SOIC package, the AD8227BRZ offers a bandwidth of 250 kHz at G = 5 and a low input offset voltage of 100 µV, ensuring accurate signal conditioning. An instrumentation amplifier (in-amp) is a type of differential amplifier that amplifies the difference between two input signals while rejecting common-mode voltages. It is a specialized operational amplifier (op-amp) topology with high input impedance and high common-mode rejection ratio (CMRR), making it ideal for precise measurement of small signals in noisy environments. In the hierarchy of analog signal processing, an in-amp is a key building block within the broader category of linear amplifiers, which are essential in data acquisition systems, sensor interfaces, and medical instrumentation. Key features of the AD8227BRZ include a wide supply range, rail-to-rail output swing, and a gain range of 5 to 1000 set by a single external resistor. The device also offers a low quiescent current of 700 µA, making it suitable for battery-powered applications. Its input offset voltage is 100 µV, and it has a CMRR of 80 dB at G = 5, providing excellent rejection of common-mode noise. The AD8227BRZ is specified over the industrial temperature range of -40°C to +125°C, ensuring reliable operation in harsh environments. Technically, the AD8227 uses a three-op-amp architecture with a precision laser-trimmed resistor network, achieving high accuracy without external trimming. The gain is set by an external resistor, RG, connected between the RG pins, allowing flexible configuration. The device's rail-to-rail output stage enables maximum dynamic range, and its wide input range accommodates signals beyond the supply rails, enhancing its versatility. The AD8227BRZ is designed for low power consumption, making it ideal for portable and remote sensing applications. Typical applications include industrial process control, bridge amplifiers, medical instrumentation, and data acquisition systems. In industrial settings, the AD8227BRZ can amplify small sensor signals from thermocouples or strain gauges, rejecting common-mode interference. In medical devices, it provides accurate ECG or EEG signal conditioning. Its wide supply range and low power make it suitable for battery-operated equipment. When designing with the AD8227BRZ, ensure proper decoupling of the power supply pins with 0.1 µF ceramic capacitors placed close to the device. The reference pin (VREF) should be driven with a low-impedance source to maintain CMRR. For optimal performance, use precision resistors for the gain-setting resistor to minimize gain error.
AD8227BRZ-RL7 - Low Cost Wide Supply Range In-Amp | Analog Devices
The AD8227BRZ-RL7 is a low cost, wide supply range instrumentation amplifier from Analog Devices. It requires only one external resistor to set any gain between 5 and 1000, making it highly versatile for a variety of signal conditioning applications. The device features a wide input range and rail-to-rail output, allowing the signal to make full use of the supply rails. Because the input range can also go below the negative supply, small signals near ground can be amplified without requiring dual supplies. The AD8227 operates on supplies ranging from ±1.5 V to ±18 V (2.2 V to 36 V single supply). An instrumentation amplifier (in-amp) is a type of differential amplifier that has been optimized for high input impedance, high common-mode rejection, and low offset voltage. It is typically used to amplify small differential signals in the presence of large common-mode voltages, such as those from bridge sensors, thermocouples, and medical instrumentation. The AD8227 belongs to the family of instrumentation amplifiers, which are a subset of operational amplifiers (op amps) designed specifically for precision measurement applications. Key features of the AD8227 include a wide supply range, rail-to-rail output, and a gain range of 5 to 1000 set by a single external resistor. The device also offers low input bias current and low offset voltage, ensuring accurate signal amplification. The AD8227 is available in an 8-lead SOIC package, which is compact and suitable for space-constrained designs. Technically, the AD8227 uses a three-op-amp topology with an internal precision resistor network, providing excellent common-mode rejection and gain accuracy. The device is laser-trimmed for low offset voltage and drift, ensuring stable performance over temperature. The wide supply range and rail-to-rail output make it suitable for both single-supply and dual-supply applications. Typical applications include industrial process control, bridge amplifiers, medical instrumentation, and data acquisition systems. The AD8227's ability to amplify signals near ground without dual supplies makes it ideal for battery-powered and single-supply systems. When designing with the AD8227, ensure that the external gain-setting resistor is placed close to the device to minimize parasitic capacitance and maintain stability. Also, consider the input common-mode range to avoid clipping the output.
AD8237ARMZ - Micropower Zero-Drift Rail-to-Rail In-Amp | ADI
The Analog Devices AD8237ARMZ is a micropower, zero-drift, true rail-to-rail instrumentation amplifier housed in an 8-pin MSOP package. It operates from a single 1.8 V to 5.5 V supply, draws only 130 µA typical quiescent current, and supports user-set gain from 1 to 1000 via two external resistors. According to the AD8237 manufacturer datasheet, the part employs an indirect current-feedback architecture that delivers true rail-to-rail input and output swing. An instrumentation amplifier (In-Amp) is a precision analog building block that amplifies a small differential voltage sitting on top of a large common-mode voltage. In-Amp -> differential amplifier -> op-amp -> analog IC -> semiconductor. The AD8237 belongs to the zero-drift chopper-stabilized family, which internally corrects its own offset and drift, eliminating the 1/f noise and DC offset drift typical of conventional three-op-amp In-Amp designs. Key specifications include 12 µV maximum input offset voltage (post-calibration), 0.05 µV/°C typical offset drift, 110 dB minimum common-mode rejection ratio (CMRR) at DC, and 100 kHz small-signal bandwidth at G=1. The device achieves 4 nV/√Hz input voltage noise spectral density and offers true rail-to-rail input and output swings over the entire supply range. The MSOP-8 footprint integrates the gain-setting resistors externally so the user can program any gain without disturbing CMRR. The AD8237 uses Analog Devices' indirect current-feedback topology combined with chopping and ping-pong auto-zero techniques to remove flicker noise. This architecture preserves CMRR across frequency because the gain-setting resistor ratio - not absolute value - determines gain accuracy. The result is an In-Amp that behaves like a precision DC amplifier but consumes only microwatts of quiescent power. Typical applications include portable ECG and biosignal front-ends, weigh scales and strain-gauge bridges, battery-powered industrial sensor conditioning, thermocouple amplifiers, and current-sense loops in handheld meters. The wide supply range (1.8 V-5.5 V) and micropower consumption make it ideal for any 2-cell AA, Li-ion, or coin-cell powered system. When designing with the AD8237, select precision 0.1% gain resistors to preserve CMRR, place a 0.1 µF ceramic bypass capacitor within 5 mm of the supply pin, and ensure the common-mode input voltage stays within the rails. Gain above 100 may require additional supply decoupling. This page synthesizes AD8237ARMZ distributor pricing, drop-in same-package alternatives from Analog Devices' instrumentation amplifier family, parametric comparison tables, and practical design notes not collected in a single place by the manufacturer datasheet.
AD823ARZ - Dual 16MHz JFET Op Amp | Analog Devices
The AD823ARZ is a dual precision, 16 MHz, JFET input operational amplifier from Analog Devices. It operates from a single supply of 3.0 V to 36 V or from dual supplies of ±1.5 V to ±18 V, with true single-supply capability and an input voltage range extending below ground. The output swings rail-to-rail, and the device can drive capacitive loads up to 500 pF at unity gain. It delivers 15 mA output current with 0.5 V from the supplies, making it suitable for a wide range of precision analog applications. 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 in analog electronics, used in signal conditioning, filtering, and instrumentation. The AD823 is a dual op amp, meaning it contains two independent amplifiers in one package, saving board space and cost. It belongs to the JFET-input op amp family, which offers high input impedance and low input bias current, ideal for interfacing with high-impedance sensors and sources. Key features of the AD823ARZ include a 16 MHz unity-gain bandwidth, a slew rate of 25 V/µs, and excellent AC performance on a low quiescent current of 2.6 mA per amplifier. The input voltage range extends below ground in single-supply operation, allowing the amplifier to handle signals near or below the negative rail. The rail-to-rail output stage maximizes dynamic range, which is critical in battery-powered and low-voltage systems. The AD823 uses a JFET input stage with a precision bipolar output stage, providing low offset voltage and low noise. The device is designed for high-speed signal processing, with a fast settling time and low distortion. Its wide supply range and robust output drive make it versatile for both single-supply and dual-supply designs. Typical applications include photodiode amplification, active filters, data acquisition systems, and audio preamplifiers. The AD823's high input impedance and low bias current are particularly suited for transimpedance amplifiers and sensor interfaces. Its rail-to-rail output and wide bandwidth also make it suitable for driving ADCs and buffering reference voltages. When designing with the AD823ARZ, ensure proper decoupling of the power supply pins with 0.1 µF ceramic capacitors placed close to the device. The input voltage range extends below ground, but do not exceed the absolute maximum ratings. For single-supply operation, bias the inputs to mid-supply to maximize headroom.
AD8250ARMZ - 10MHz iCMOS PGIA, G=1/2/5/10 | Analog Devices
The Analog Devices AD8250ARMZ is a 10 MHz bandwidth, digitally programmable-gain instrumentation amplifier (PGIA) offering pin-selectable gains of 1, 2, 5, and 10 in a compact 10-lead MSOP (RM-10) package. It features a GΩ-class input impedance, 20 V/µs slew rate, fast 615 ns (max) settling time to 0.001%, and -110 dB THD, making it well suited to bridge-type sensors and high-sample-rate analog-to-digital converters. An instrumentation amplifier (INA / PGIA) is a closed-loop gain block that combines high common-mode rejection (CMRR), high input impedance, and a single-resistor-programmable differential gain. PGIA variants add a digital interface to switch gain on the fly, which lets one analog front-end handle widely varying sensor signals (thermocouples, strain gauges, shunt resistors, biopotential electrodes) without an external mechanical relay or analog switch network. The AD8250 occupies the mid-bandwidth, low-power niche between classic three-op-amp INAs such as the AD620 and the higher-frequency AD8421 family. Key specifications include 10 MHz small-signal bandwidth (G=1), 20 V/µs slew rate, 1.5 nV/√Hz input voltage noise density, 75 µV (max) input offset voltage, 0.5 µV/°C (max) offset drift, and a wide ±5 V to ±15 V (or 5 V to 30 V single-supply) operating range. The MSOP-10 footprint consumes roughly 60% less board area than an SOIC-8 INA, while parallel digital gain-select inputs simplify FPGA/MCU control. Quiescent current is typically 4.5 mA on ±15 V supplies. Architecturally, the AD8250 uses Analog Devices' iCMOS process, which combines high-voltage bipolar transistors on a sub-micron CMOS wafer to deliver wide supply range and low power without sacrificing ESD/EMC robustness. The topology is a classic three-op-amp INA, but the feedback resistors are switched by matched MOSFET networks rather than mechanical relays, eliminating glitch-free concerns of electromechanical switching. Internal overdrive protection prevents damage when the input exceeds the supply rails by up to ±25 V. Typical applications include industrial process control front-ends, weigh scales and load-cell amplifiers, ECG and biopotential signal conditioning, ATE (automatic test equipment) programmable-gain stages, and wide-dynamic-range data-acquisition (DAQ) systems driving 16-/18-/24-bit ADCs such as the AD7612, AD7606, or AD7768. The transparent gain mode also supports legacy pin-strap designs without an FPGA. When designing with the AD8250, route the gain-select logic lines away from the input traces to preserve CMRR, and use a low-impedance ground plane beneath the package. Reference-design AN-1385 demonstrates -111 dB THD at 1 kHz and 91 dB SNR when paired with the AD7612 and an ADG1209 mux, validating the part for precision DAQ. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving an engineer a single source for part selection, sourcing, and reference-design context.
AD8251ARMZ - 10MHz iCMOS Programmable Gain In-Amp | ADI
The Analog Devices AD8251ARMZ is a 10 MHz bandwidth, digitally programmable gain instrumentation amplifier (in-amp) with GΩ input impedance, low output noise, and low distortion, housed in a 10-lead MSOP package. It supports user-selectable gains of 1, 2, 4, and 8 set via transparent parallel logic inputs or a pin-strapped mode, and operates from ±5 V to ±15 V dual supplies. An instrumentation amplifier is a precision differential amplifier with high common-mode rejection ratio (CMRR), high input impedance, and a single-ended output - purpose-built for extracting small differential signals sitting on top of large common-mode voltages. Within the broader taxonomy, the AD8251 sits in the chain: instrumentation amplifier -> precision amplifier -> amplifier IC -> analog signal chain -> semiconductor. Programmable-gain in-amps specifically address dynamic-range challenges in sensor conditioning by allowing the system to optimize gain per channel or per measurement range. Key features include a high CMRR of 98 dB minimum at G = 8, gain drift of 10 ppm/°C maximum, and offset drift of 1.8 µV/°C maximum at G = 8. Excellent AC performance is delivered through a fast 785 ns settling time to 0.001% (maximum), a 20 V/µs minimum slew rate, and low THD of -110 dB. These specifications make the AD8251 suitable for interfacing directly with sensors and driving high-sample-rate analog-to-digital converters (ADCs) without the need for an additional buffer stage. The device uses Analog Devices' iCMOS (industrial CMOS) process technology, which enables high-voltage analog operation (±15 V) on a small die, fitting a 10-lead MSOP package. The architecture pairs a classic three-op-amp in-amp topology with switched feedback resistors selected by logic-level gain pins, allowing transparent gain changes mid-acquisition. Power dissipation is approximately 6 mA quiescent current over the supply range, supporting portable instrumentation designs. Typical applications include industrial process controls, weigh scales, ECG/biomedical front-ends, and data acquisition (DAQ) systems where programmable gain optimizes ADC full-scale utilization across multiple sensor ranges. The wide supply range also supports PLC analog input modules and ATE (automatic test equipment) signal conditioning. Designers should pay attention to input bias-current return paths when the source impedance is high (e.g., transformer-coupled or biased piezoelectric sensors). Decouple both supply pins with 0.1 µF ceramic capacitors placed within 5 mm of the device, plus a 10 µF bulk tantalum or ceramic at each supply. Use a ground plane and keep input traces short and guarded for maximum CMRR at high frequencies. This page synthesizes distributor pricing, drop-in alternative inventory, and practical design notes not found in the manufacturer datasheet alone, with verified web data captured on 2026-10-04.
AD8251ARMZ-R7 - 10MHz Digitally Programmable Gain In-Amp | ADI
The Analog Devices AD8251ARMZ-R7 is a 10 MHz bandwidth, digitally programmable-gain instrumentation amplifier (in-amp) with switchable gains of 1, 2, 4, and 8, housed in a 10-pin MSOP package. It delivers GΩ input impedance, 20 V/μs slew rate, low total harmonic distortion of −110 dB, and 785 ns (max) settling to 0.001%, making it ideal for high-sample-rate analog-to-digital converter front ends and precision sensor conditioning. An instrumentation amplifier (in-amp) is a precision differential amplifier optimized for accurate, low-noise amplification of small differential signals riding on large common-mode voltages. In-amps sit in the analog signal chain between sensors (thermocouples, strain gauges, bridge transducers, biopotential electrodes) and downstream ADCs, combining high common-mode rejection ratio (CMRR), high input impedance, and user-adjustable gain. Within the broader taxonomy, in-amps belong to the amplifier IC family, which is itself a subset of linear ICs and signal-conditioning components. The AD8251's iCMOS™ process enables ±15 V supply operation in a small surface-mount footprint. Key differentiating features of the AD8251 include its parallel digital gain-control interface (two logic inputs select G = 1, 2, 4, or 8) allowing microsecond gain switching without analog glitches, a maximum input bias current of 50 pA, integrated overvoltage protection up to ±40 V on the inputs, and low offset drift of 1 μV/°C. The 10 MHz small-signal bandwidth and 20 V/μs slew rate are preserved at all gain settings, which is uncommon in programmable-gain in-amps. An exposed thermal pad on the MSOP-10 footprint improves θJA for continuous industrial-temperature operation. Architecturally, the AD8251 uses a classic three-op-amp in-amp topology with precision thin-film gain-setting resistors and laser-trimmed input stages, then digitizes the gain selection via CMOS switches on the feedback network. The result is a single device that replaces discrete in-amp designs with manual relay or analog-gain-switch circuitry, reducing PCB area and improving gain-set repeatability. Power dissipation is approximately 30 mW at ±5 V supply, well within the MSOP-10 thermal budget. Typical applications include medical instrumentation (ECG, EEG front ends), industrial process control (PLC analog input modules, weigh scales), automated test equipment (ATE) scanner cards, and wideband data-acquisition systems driving 16-/18-bit SAR ADCs. Designers pair the AD8251 with high-impedance sensors and high-CMRR front-end filters to extract millivolt-level signals from noisy industrial environments. A key design consideration is that the digital gain-control pins (A0, A1) require clean CMOS-level logic; any ringing or slow edges can inject charge into the input stage. Decouple both supply rails with 0.1 μF X7R ceramic capacitors placed within 5 mm of the supply pins. For best CMRR above 10 kHz, keep source impedances balanced to within 1 Ω and place the common-mode filter capacitor directly across the input pins. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
AD8251ARMZ-RL - 10MHz Prog Gain In-Amp | Analog Devices
The Analog Devices AD8251ARMZ-RL is a 10 MHz bandwidth, digitally programmable gain instrumentation amplifier (in-amp) housed in a 10-lead MSOP (RM) package with iCMOS process technology. It provides pin-strap or parallel-port selectable gains of 1, 2, 4, and 8, delivering up to 20 V/µs slew rate, 785 ns settling to 0.001% (maximum), and -110 dB total harmonic distortion (THD). According to the Analog Devices AD8251 datasheet, the device operates from ±5 V to ±15 V dual supplies and offers 98 dB minimum CMRR at G = 8. An instrumentation amplifier is a precision differential amplifier with very high input impedance (typically GΩ) and a single-ended output, designed to extract small differential signals sitting on top of large common-mode voltages. The category hierarchy runs: instrumentation amplifier -> differential amplifier -> operational amplifier -> analog IC -> semiconductor. In-amps sit between the sensor and the ADC, providing gain, level shifting, and common-mode rejection that a bare op-amp cannot achieve with a single device. The AD8251 uses Analog Devices' iCMOS (industrial CMOS) high-voltage process, enabling ±15 V supplies in a small 10-MSOP outline. Other headline specifications include 10 ppm/°C maximum gain drift, 1.8 µV/°C maximum offset drift (G = 8), and GΩ input impedance. Parallel digital gain control is implemented through two logic inputs (A0, A1) that latch on the rising edge of WR. The 10 MHz small-signal bandwidth at unity gain makes the AD8251 suitable for driving high-sample-rate analog-to-digital converters without compromising settling time or distortion. The combination of low noise, low drift, and fast settling enables 16-bit and 18-bit data-acquisition systems where DC accuracy and AC transient response both matter. Typical applications include industrial process controls, weigh scales, multichannel data acquisition systems, ECG/medical instrumentation front ends, and automotive sensor interfaces. The wide supply range also makes it suitable for ±12 V and ±15 V industrial rails. When designing with the AD8251, pay close attention to the input common-mode range, which is rail-to-rail at low gains and rolls off near the rails at G = 8. Decouple the supplies with 0.1 µF ceramic capacitors placed within 5 mm of the supply pins, and route the gain-control logic signals away from the sensitive IN+/IN- traces. This page synthesizes distributor pricing, drop-in alternatives, application examples, and design notes not consolidated on the manufacturer datasheet - a single source for engineers evaluating the AD8251ARMZ-RL for sensor signal chains.
AD827SE/883B - High Speed Dual Op Amp | Analog Devices
The AD827SE/883B is a high-speed, low-power dual operational amplifier from Analog Devices, packaged in a 20-lead ceramic leadless chip carrier (CLCC) measuring 9x9 mm. It is a dual version of the industry-standard AD847 op amp, offering a 300 V/µs slew rate and 50 MHz unity-gain bandwidth while consuming only 100 mW from ±5 V supplies. The device operates from ±5 V to ±15 V power supplies and is specified for standard (general purpose) amplification applications. 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. Op amps are fundamental building blocks in analog electronics, forming the basis of active filters, comparators, integrators, and many other circuits. The AD827SE/883B is a dual op amp, meaning it contains two independent amplifiers in one package, saving board space and cost in multi-channel applications. Key features include a 50 MHz unity-gain bandwidth, 300 V/µs slew rate, 120 ns settling time, and the ability to drive unlimited capacitive loads. It offers excellent video performance with 0.04% differential gain and 0.19° differential phase at 4.4 MHz. DC performance includes a maximum input offset voltage of 2 mV, open-loop gain of 3,500 V/V into 500 Ω loads, and low input voltage noise of 15 nV/√Hz. Common-mode rejection ratio is a minimum of 80 dB, and power supply rejection ratio is maintained above 20 dB at frequencies up to 1 MHz. The AD827SE/883B is designed for high-speed signal processing, video amplification, and precision analog applications. Its low power consumption and high slew rate make it suitable for portable and battery-powered equipment. The ceramic package provides hermetic sealing, making it ideal for military and aerospace applications where reliability is critical. Typical applications include video line drivers, analog-to-digital converter (ADC) input buffers, active filters, and instrumentation amplifiers. The device's high bandwidth and fast settling time ensure accurate signal reproduction in high-frequency systems. When designing with the AD827SE/883B, ensure proper power supply decoupling with 0.1 µF ceramic capacitors close to the supply pins. The device can drive capacitive loads without oscillation, but for optimal performance, use a small series resistor (e.g., 50 Ω) when driving long cables.
AD827SQ/883B - Dual High Speed Op Amp | Analog Devices
The AD827SQ/883B is a dual high-speed, low-power operational amplifier from Analog Devices, manufactured in a hermetic 8-pin CERDIP package. It is the military-grade (MIL-STD-883B) version of the industry-standard AD827, offering a slew rate of 300 V/µs and a unity-gain bandwidth of 50 MHz while consuming only 100 mW from ±5 V supplies. The device operates from ±5 V to ±15 V power supplies and features an open-loop gain of 3,500 V/V into 500 Ω loads, low input voltage noise of 15 nV/√Hz, and a maximum input offset voltage of 2 mV. With a common-mode rejection ratio of at least 80 dB and power supply rejection better than 20 dB at 1 MHz, it is designed for high-speed signal conditioning in demanding environments. An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, used in analog circuits for amplification, filtering, and signal conditioning. The AD827 is a dual op amp, meaning it contains two independent amplifiers in one package, providing design flexibility and space savings. As a high-speed op amp, it is part of the broader category of linear integrated circuits, which are fundamental building blocks in analog signal processing systems. Key features of the AD827SQ/883B include its high slew rate and bandwidth, which enable it to handle fast transient signals without distortion, making it suitable for video and pulse amplification. The low power consumption of 100 mW per amplifier is advantageous in power-sensitive applications. The military-grade qualification ensures reliability in harsh environments, with a specified operating temperature range of -55°C to +125°C. The device also offers excellent AC performance, with a gain-bandwidth product of 50 MHz and a settling time of 100 ns to 0.1%. Technically, the AD827 is a dual version of the AD847, sharing its architecture and performance characteristics. It uses a complementary bipolar process to achieve high speed and low noise. The input stage provides low offset voltage and high common-mode rejection, while the output stage can drive 500 Ω loads with high open-loop gain. The device is internally compensated for unity-gain stability, simplifying its use in various configurations. Typical applications include high-speed data acquisition systems, video amplifiers, active filters, and precision instrumentation. Its high slew rate and bandwidth make it ideal for driving analog-to-digital converters (ADCs) and for use in communication systems where signal integrity is critical. The military-grade version is particularly suited for aerospace and defense applications where reliability is paramount. When designing with the AD827SQ/883B, ensure proper power supply decoupling with 0.1 µF capacitors close to the supply pins to maintain stability and reduce noise. The device's high bandwidth requires careful PCB layout to minimize parasitic capacitance and inductance, which can affect performance.
AD8310ARM - 95dB Log Amp DC-440MHz | Analog Devices
The AD8310ARM is a complete, fast, voltage-output, DC to 440 MHz demodulating logarithmic amplifier (log amp) from Analog Devices. It provides a 95 dB dynamic range from -91 dBV to +4 dBV, with a rise time of less than 15 ns and the ability to drive up to 25 mA into a grounded load. The device operates from a single 2.7 V to 5.5 V supply, drawing a typical quiescent current of 8 mA. It is housed in an 8-lead MSOP package, making it suitable for space-constrained applications. A logarithmic amplifier is an electronic circuit that produces an output voltage proportional to the logarithm of the input signal amplitude. In the context of RF and IF signal processing, a demodulating log amp converts an AC input signal into a DC output voltage that represents the signal level in decibels (dB). This is essential for applications such as received signal strength indication (RSSI), power measurement, and level detection. The AD8310 belongs to the family of logarithmic amplifiers, which are a subset of special-purpose amplifiers used in analog signal processing chains. Key features of the AD8310ARM include its wide dynamic range of 95 dB, which allows accurate measurement of signals from very small to relatively large amplitudes. The device offers a logarithmic slope of 24 mV/dB and an intercept of -95 dBV, providing a linear-in-dB output characteristic. Its fast response time, with a rise time of less than 15 ns, enables real-time signal level monitoring in high-speed communication systems. The high output current capability of 25 mA allows direct driving of subsequent stages without additional buffering. Technically, the AD8310 uses a multistage demodulating architecture, where successive detection stages are summed to produce a logarithmic response. This design achieves excellent linearity of ±0.4 dB over the specified range. The device operates from DC to 440 MHz, covering audio through UHF frequencies, making it versatile for various applications. The input is single-ended, and the output is a voltage proportional to the log of the input amplitude, with a full-scale output swing of up to 2.5 V. Typical applications include RF power measurement, signal strength indication in receivers, radar and communication systems, and test equipment. The AD8310ARM is also used in cellular base stations, wireless infrastructure, and portable devices where accurate signal level detection is required. Its low power consumption and small package make it ideal for battery-powered instruments. When designing with the AD8310ARM, ensure proper decoupling of the power supply pins with 0.1 µF and 1 µF capacitors placed close to the device. The input should be AC-coupled if the signal has a DC offset, and the output can drive capacitive loads up to 50 pF without degradation. For optimal performance, keep the input signal within the specified dynamic range to avoid saturation.
AD8310ARMZ - 95dB Log Amp DC-440MHz | Analog Devices
The AD8310ARMZ is a complete, fast, voltage-out, DC to 440 MHz demodulating logarithmic amplifier (log amp) from Analog Devices. It provides a 95 dB dynamic range and is capable of driving up to 25 mA into a grounded load in under 15 ns. The device operates from a single 2.7 V to 5.5 V supply and is available in an 8-lead MSOP package, making it ideal for a wide range of RF and IF signal chain applications. A logarithmic amplifier is a specialized amplifier that produces an output voltage proportional to the logarithm of the input signal amplitude. This allows a wide dynamic range of input signals to be compressed into a manageable output range, which is essential for applications such as received signal strength indication (RSSI), power measurement, and level detection. The AD8310 uses a progressive compression (successive detection) architecture, which provides accurate logarithmic conversion over a wide frequency range. Key features of the AD8310ARMZ include a 95 dB dynamic range, a logarithmic slope of 24 mV/dB, a logarithmic intercept of -88 dBm, and a fast voltage-mode output that can drive 25 mA loads. The device also features an enable pin (ENBL) for power-down control, and it operates over the industrial temperature range of -40°C to +85°C. The MSOP-8 package is compact and suitable for space-constrained designs. The AD8310's architecture uses nine cascaded amplifier stages, each with a gain of 10 dB, followed by detectors. The detector outputs are summed and converted to a single-ended voltage, scaled at 2 µA/dB. This design provides excellent temperature stability and accuracy over the full dynamic range. The device is specified for operation from DC to 440 MHz, making it suitable for both baseband and IF applications. Typical applications include RF power amplifier control, signal strength measurement, radar and communication systems, and test equipment. The AD8310ARMZ is particularly well-suited for use in cellular base stations, wireless infrastructure, and portable RF devices where accurate signal level monitoring is required. When designing with the AD8310ARMZ, it is important to provide adequate decoupling on the supply pins and to consider the output loading, as the device can drive up to 25 mA. The enable pin can be used to reduce power consumption in battery-powered applications.