The AD8422 is a high precision, low power, low noise, rail-to-rail instrumentation amplifier that delivers the best performance per unit microampere in the industry. The AD8422 processes signals with ultralow distortion performance that is load independent over its full output range.The AD8422 is the third generation development of the industry standard AD620. The AD8422 employs new process technologies and design techniques to achieve higher dynamic range and lower errors than its predecessors, while consuming less than one-third of the power. The AD8422 uses the high performance pinout introduced by the AD8221.Very low bias current makes the AD8422 error-free with high source impedance, allowing multiple sensors to be multiplexed to the inputs. Low voltage noise and low current noise make the AD8422 an ideal choice for measuring a Wheatstone bridge.The wide input range and rail-to-rail output of the AD8422 bring all of the benefits of a high performance in-amp to single-supply applications. Whether using high or low supply voltages, the power savings make the AD8422 an excellent choice for high channel count or power sensitive applications.The AD8422 uses robust input protection that ensures reliability without sacrificing noise performance. The AD8422 has high ESD immunity, and the inputs are protected from continuous voltages up to 40 V from the opposite supply rail.A single resistor sets the gain from 1 to 1000. The reference pin can be used to apply a precise offset to the output voltage.The AD8422 is specified from −40°C to +85°C for the 8-lead MSOP and the 8-lead SOIC_N and from −40°C to +125°C for the 8-lead LFCSP.APPLICATIONS Medical instrumentation Industrial process controls Strain gages Transducer interfaces Precision data acquisition systems Channel-isolated systems Portable instrumentation

The ADA4084-1 (single), ADA4084-2 (dual), and ADA4084-4 (quad) are single-supply, 10 MHz bandwidth amplifiers featuring rail-to-rail inputs and outputs. They are guaranteed to operate from +3 V to +30 V (or ±1.5 V to ±15 V).These amplifiers are well suited for single-supply applications requiring both ac and precision dc performance. The combination of wide bandwidth, low noise, and precision makes the ADA4084-1/ADA4084-2/ADA4084-4 useful in a wide variety of applications, including filters and instrumentation.Other applications for these amplifiers include portable telecommunications equipment, power supply control and protection, and use as amplifiers or buffers for transducers with wide output ranges. Sensors requiring a rail-to-rail input amplifier include Hall effect, piezoelectric, and resistive transducers.The ability to swing rail to rail at both the input and output enables designers to build multistage filters in single-supply systems and to maintain high signal-to-noise ratios.The ADA4084-1/ADA4084-2/ADA4084-4 are specified over the industrial temperature range of −40°C to +125°C.The single ADA4084-1 is available in the 5-lead SOT-23 and 8-lead SOIC; the dual ADA4084-2 is available in the 8-lead SOIC, 8-lead MSOP, and 8-lead LFCSP surface-mount packages; and the ADA4084-4 is offered in the 14-lead TSSOP and 16-lead LFCSP.The ADA4084-1/ADA4084-2/ADA4084-4 are members of a growing series of high voltage, low noise op amps offered by Analog Devices, Inc.Applications Battery-powered instrumentation High-side and low-side sensing Power supply control and protection Telecommunications Digital-to-analog converter (DAC) output amplifiers Analog-to-digital converter (ADC) input buffers

The ADA4895-2 is a dual, high speed voltage feedback amplifier that is gain ≥ 10 stable with low input noise, rail-to-rail output, and quiescent current of 3 mA per amplifier. With a 1/f noise of 2 nV/√Hz at 10 Hz and a spurious-free dynamic range of −72 dBc at 2 MHz, the ADA4895-2 is an ideal solution in a variety of applications, including ultrasound, low noise preamplifiers, and drivers of high performance ADCs. The Analog Devices, Inc., proprietary next generation SiGe bipolar process and innovative architecture enable this high performance amplifier.The ADA4895-2 has a large signal bandwidth of 146 MHz at a gain of +10 with a slew rate of 943 V/μs, and settles to 0.1% in 22 ns. The wide supply voltage range (3 V to 10 V) of the ADA4895-2 makes this amplifier an ideal candidate for systems that require high dynamic range, high gain, precision, and high speed.The ADA4895-2 is available in a 10-lead MSOP package and operates over the extended industrial temperature range of −40°C to +125°C. Applications Low noise preamplifier Ultrasound amplifiers PLL loop filters High performance ADC drivers DAC buffers

The AD8646 and the AD8647 are the dual, and the AD8648 isthe quad, rail-to-rail, input and output, single-supply amplifiersfeaturing low offset voltage, wide signal bandwidth, low inputvoltage, and low current noise. The AD8647 also has a lowpower shutdown function.The combination of 24 MHz bandwidth, low offset, low noise,and very low input bias current makes these amplifiers useful ina wide variety of applications. Filters, integrators, photodiodeamplifiers, and high impedance sensors all benefit from thecombination of performance features. AC applications benefitfrom the wide bandwidth and low distortion. The AD8646/AD8647/AD8648 offer high output drive capability, which isexcellent for audio line drivers and other low impedanceapplications. The AD8646 and AD8648 are available forautomotive applications (see the Ordering Guide).Applications include portable and low powered instrumentation,audio amplification for portable devices, portable phoneheadsets, barcode scanners, and multipole filters. The ability toswing rail to rail at both the input and output enables designersto buffer CMOS ADCs, DACs, ASICs, and other wide outputswing devices in single-supply systems.Applications Battery-powered instruments Multipole filters ADC front ends Sensors Barcode scanners ASIC input or output amplifiers Audio amplifiers Photodiode amplifiers Datapath/mux/switch control

The AD8663 / AD8667 / AD8669 are rail-to-rail output amplifiersthat use the Analog Devices, Inc., patented DigiTrim® trimmingtechnique to achieve low offset voltage. The AD8663 / AD8667 /AD8669 feature an extended operating range with supplyvoltages up to 16 V. They also feature low input bias current,low input offset voltage, and low current noise.The combination of low offset, very low input bias current, anda wide supply range makes these amplifiers useful in a wide varietyof applications usually associated with higher priced JFET amplifiers.Systems using high impedance sensors, such as photodiodes,benefit from the combination of low input bias current, lownoise, low offset, and wide bandwidth.The ability to operate the device for single (5 V to 16 V) or dualsupplies (±2.5 V to ±8 V) supports many applications. The railto-railoutputs provide increased dynamic range to drive lowfrequency data converters. The low bias current drift is wellsuitedfor precision I-to-V converters. The combination ofprecision offset, offset drift, and low noise also make the opamps ideal for gain, dc offset adjust, and active filter in bothinstrumentation and medical applications. These low powerop amps can be used in IR thermometers, pH and ORP instruments,pressure transducer front ends, and other sensor signalconditioning circuits that are used in remote or wirelessapplications.The AD8663 / AD8667 / AD8669 are specified over the extendedindustrial temperature range of −40°C to +125°C. The singleAD8663 is available in a narrow 8-lead SOIC package and a verythin, 8-lead LFCSP. The dual AD8667 is available in a narrow8-lead SOIC package and an 8-lead MSOP. The quad AD8669is available in a 14-lead SOIC and 14-lead small TSSOP. Applications Sensor front ends Transimpedance amplifiers Electrometer applications Photodiode amplification Low power ADC drivers Medical diagnostic instruments pH and ORP meters and probes DAC or REF buffers

The AD8675 precision operational amplifier has ultralow offset, drift, and voltage noise combined with very low input bias currents over the full operating temperature range. The AD8675 is a precision, wide bandwidth op amp featuring rail-to-rail output swings and very low noise. Operation is fully specified from ±5 V to ±15 V.The AD8675 features a rail-to-rail output like that of the OP184, but with wide bandwidth and even lower voltage noise, com-bined with the precision and low power consumption like that of the industry-standard OP07 amplifier. Unlike other low noise, rail-to-rail op amps, the AD8675 has very low input bias current and low input current noise.With typical offset voltage of only 10 μV, offset drift of 0.2 μV/°C, and noise of only 0.10 μV p-p (0.1 Hz to 10 Hz), the AD8675 is perfectly suited for applications where large error sources cannot be tolerated. For applications with even lower offset tolerances, the proprietary nulling capability allows a combination of both device and system offset errors up to 3.5 mV (referred to the input) to be compensated externally. Unlike previous circuits, the AD8675 accommodates this adjustment without adversely affecting the offset drift, CMRR, and PSRR of the amplifier. Precision instrumentation, PLL, and other precision filter circuits, position and pressure sensors, medical instrumentation, and strain gage amplifiers benefit greatly from the very low noise, low input bias current, and wide bandwidth. Many systems can take advantage of the low noise, dc precision, and rail-to-rail output swing provided by the AD8675 to maximize SNR and dynamic range.The smaller packages and low power consumption afforded by the AD8675 allow maximum channel density or minimum board size for space-critical equipment.The AD8675 is specified for the extended industrial temperature range (−40°C to +125°C). The AD8675 amplifier is available in the tiny 8-lead MSOP, and the popular 8-lead, narrow SOIC, RoHS compliant packages. MSOP packaged devices are only available in tape and reel format.Applications Precision instrumentation PLL filters Laser diode control loops Strain gage amplifiers Medical instrumentation Thermocouple amplifiers

The ADA4000-1 / ADA4000-2 / ADA4000-4 are junction fieldeffect transistor (JFET) input operational amplifiers featuringprecision, very low bias current, and low power. Combininghigh input impedance, low input bias current, wide bandwidth,fast slew rate, and fast settling time, the ADA4000-1 / ADA4000-2 / ADA4000-4 are ideal amplifiers for driving analog-to-digitalinputs and buffering digital-to-analog converter outputs. Theinput common-mode voltage includes the positive power supply,which makes the device an excellent choice for high-side signalconditioning.Additional applications for the ADA4000-1 / ADA4000-2 / ADA4000-4 include electronic instruments, automated testequipment (ATE) amplification, buffering, integrator circuits,instrumentation-quality photodiode amplification, and fastprecision filters (including phase-locked loop filters). The devicesalso include utility functions, such as reference buffering, levelshifting, control input/output interface, power supply control,and monitoring functions.Applications Reference gain/buffers Level shift/driving Active filters Power line monitoring/control Current/voltage sense or monitoring Data acquisition Sample-and-hold circuits Integrators

The ADM1191 is an integrated current sense amplifier that offers digital current and voltage monitoring via an on-chip, 12-bit analog-to-digital converter (ADC), communicated through an I2C interface. An internal current sense amplifier senses voltage across the sense resistor in the power path via the VCC pin and the SENSE pin.A 12-bit ADC can measure the current seen in the sense resistor, as well as the supply voltage on the VCC pin.An industry-standard I2C interface allows a controller to read current and voltage data from the ADC. Measurements can be initiated by an I2C command or via the convert (CONV) pin. The CONV pin is especially useful for synchronizing reads on multiple ADM1191 devices. Alternatively, the ADC can run continuously, and the user can read the latest conversion data whenever it is required. Up to 16 unique I2C addresses can be created, depending on the way the A0 pin and the A1 pin are connected.A SETV pin is also included. A voltage applied to this pin is internally compared to the output voltage on the current sense amplifier. The output of the SETV comparator asserts when the current sense amplifier output exceeds the SETV voltage. When this event occurs, the ALERTB output asserts.The ALERTB output can be used as a flag to warn a micro-controller or field programmable gate array (FPGA) of an overcurrent condition. ALERTB outputs of multiple ADM1191 devices can be tied together and used as a combined alert.The ADM1191 is packaged in a 10-lead MSOP.APPLICATIONS Power monitoring/power budgeting Central office equipment Telecommunication and data communication equipment PCs/servers

The AD8012 is a dual, low power, current feedback amplifiercapable of providing 350 MHz bandwidth while using only1.7 mA per amplifier. It is intended for use in high frequency,wide dynamic range systems where low distortion and highspeed are essential and low power is critical.With only 1.7 mA of supply current, the AD8012 also offersexceptional ac specifications such as 20 ns settling time and2,250 V/μs slew rate. The video specifications are 0.02% differentialgain and 0.06 degree differential phase, excellent for sucha low power amplifier. In addition, the AD8012 has a low offsetof 1.5 mV.The AD8012 is well suited for any application that requires highperformance with minimal power.The product is available in standard 8-lead SOIC or MSOPpackages and operates over the industrial temperature range–40°C to +85°C.Applications XDSL, HDSL Line Drivers ADC Buffers Professional Cameras CCD Imaging Systems Ultrasound Equipment Digital Cameras

The AD8655/AD8656 are the industry’s lowest noise, precision CMOS amplifiers. They leverage the Analog Devices DigiTrim® technology to achieve high dc accuracy.The AD8655/AD8656 provide low noise (2.7 nV/√Hz at 10 kHz), low THD + N (0.0007%), and high precision performance (250 μV max over VCM) to low voltage applications. The ability to swing rail-to-rail at the input and output enables designers to buffer analog-to-digital converters (ADCs) and other wide dynamic range devices in single-supply systems.The high precision performance of the AD8655/AD8656 improves the resolution and dynamic range in low voltage applications. Audio applications, such as microphone pre-amps and audio mixing consoles, benefit from the low noise, low distortion, and high output current capability of the AD8655/AD8656 to reduce system level noise performance and maintain audio fidelity. The high precision and rail-to-rail input and output of the AD8655/ AD8656 benefit data acquisition, process controls, and PLL filter applications.The AD8655/AD8656 are fully specified over the −40°C to +125°C temperature range. The AD8655/AD8656 are available in Pb-free, 8-lead MSOP and SOIC packages. The AD8655/ AD8656 are both available for automotive applications.Applications ADC and DAC buffers Audio Industrial controls Precision Filters Digital Scales Automotive collision avoidance PLL filters