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 AD8682 and AD8684 are dual and quad low power, precision (1 mV) JFET amplifiers featuring excellent speed at low supply currents. The slew rate is typically 9 V/μs with a supply current under 250 μA per amplifier. These unity-gain stable amplifiers have a typical gain bandwidth of 3.5 MHz. The JFET input stage ensures bias current is typically a few picoamps and below 125 pA maximum over the full temperature operating range.The devices are ideal for portable, low power applications, especially with high source impedance. The devices are unity gain stable and can drive higher capacity loads (G = 1, noninverting), as an example of their excellent dynamic response over a wide range of conditions, delivering dc precision performance at low quiescent currents.Applications Portable telecommunications Low power industrial and instrumentation Loop filters Active and precision filters Integrators Strain gauge amplifiers Portable medical instrumentation Supply current monitoring

The AD8691, AD8692, and AD8694 are low cost, single, dual, and quad rail-to-rail output, single-supply amplifiers featuring low offset and input voltages, low current noise, and wide signal bandwidth. The combination of low offset, low noise, very low input bias currents, and high speed make these amplifiers useful in a wide variety of applications. Filters, integrators, photodiode amplifiers, and high impedance sensors all benefit from this combination of performance features. Audio and other ac applications benefit from the wide bandwidth and low distortion of these devices.Applications for these amplifiers include power amplifier (PA) controls, laser diode control loops, portable and loop-powered instrumentation, audio amplification for portable devices, and ASIC input and output amplifiers.The small SC70 and TSOT package options for the AD8691 allow it to be placed next to sensors, thereby reducing external noise pickup.The AD8691, AD8692, and AD8694 are specified over the extended industrial temperature range of −40°C to +125°C. The AD8691 single is available in 5-lead SC70 and 5-lead TSOT packages. The AD8692 dual is available in 8-lead MSOP and narrow SOIC surface-mount packages. The AD8694 quad is available in 14-lead TSSOP and narrow 14-lead SOIC packages.See ordering guide section for automotive grades.Applications Photodiode amplification Battery-powered instrumentation Medical instruments Multipole filters Sensors Portable audio devices

The ADA4004-1/ADA4004-2/ADA4004-4 are 1.8 nV/√Hz precision amplifiers featuring 40 μV offset, 0.7 μV/°C drift, 12 MHz bandwidth, and low 1.7 mA per amplifier supply current.The ADA4004-1/ADA4004-2/ADA4004-4 are designed on the high performance iPolar™ process, enabling improvements such as reduced noise and power consumption, increased speed and stability, and smaller footprint size. Novel design techniques enable the ADA4004-1/ADA4004-2/ADA4004-4 to achieve 1.8 nV/√Hz voltage noise density and a low 6 Hz 1/f noise corner frequency while consuming just 1.7 mA per amplifier. The small package saves board space, reduces cost, and improves layout flexibility.Applications for these amplifiers include high precision controls, PLL filters, high performance precision filters, medical and analytical instrumentation, precision power supply controls, ATE, and data acquisition systems. Operation is fully specified from ±5 V to ±15 V from −40°C to +125°C.The ADA4004-1, ADA4004-2, and ADA4004-4 are members of a growing series of low noise op amps offered by Analog Devices, Inc. (see Table 1).ApplicationsPrecision instrumentationFilter blocksMicrophone preamplifiersIndustrial controlThermocouples and RTDsReference buffers

The ADA4091-2 dual and ADA4091-4 quad are micropower,single-supply, 1.2 MHz bandwidth amplifiers featuring rail-torailinputs and outputs. They are guaranteed to operate from a+3.0 V to +30 V single supply as well as from ±1.5 V to ±15 Vdual supplies.The ADA4091-2 / ADA4091-4 features a unique input stage thatallows the input voltage to exceed either supply safely without anyphase reversal or latch-up; this is called overvoltage protection(OVP).Applications for these amplifiers include portable telecommunicationsequipment, power supply control and protection,and interface for transducers with wide output ranges. Sensorsrequiring 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 enablesdesigners, for example, to build multistage filters in single-supplysystems and to maintain high signal-to-noise ratios (SNR).The ADA4091-2 / ADA4091-4 is specified over the extended industrialtemperature range of −40°C to +125°C. The ADA4091-2 /ADA4091-4 is part of the growing selection of 36 V, low poweroperational amplifiers from Analog Devices, Inc.,The ADA4091-2 is available in 8-lead, plastic SOIC and 8-leadLFCSP packages. The ADA4091-4 is available in 14–lead TSSOPand 16-lead LFCSP surface-mount packages.Applications Industrial process control Battery-powered instrumentation Power supply control and protection Telecommunications Remote sensors Low voltage strain gage amplifiers DAC output amplifiers

The ADA4505-1/ADA4505-2/ADA4505-4 are single, dual, and quad micropower amplifiers featuring rail-to-rail input and output swings while operating from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies.Employing a new circuit technology, these low cost amplifiers offer zero input crossover distortion (excellent PSRR and CMRR performance) and very low bias current, while operating with a supply current of less than 10 μA per amplifier.This combination of features makes the ADA4505-x amplifiers ideal choices for battery-powered applications because they minimize errors due to power supply voltage variations over the lifetime of the battery and maintain high CMRR even for a rail-to-rail op amp.Remote battery-powered sensors, handheld instrumentation and consumer equipment, hazard detectors (for example, smoke, fire, and gas), and patient monitors can benefit from the features of the ADA4505-x amplifiers.The ADA4505-x family is specified for both the industrial temperature range (−40°C to +85°C) and the extended industrial temperature range (−40°C to +125°C). The ADA4505-1 single amplifier is available in a tiny 5-lead SOT-23. The ADA4505-2 dual amplifier is available in a standard 8-lead MSOP and a 8-ball WLCSP. The ADA4505-4 quad amplifier is available in a 14-lead TSSOP and a 14-ball WLCSP.The ADA4505-x family is a member of a growing series of zero crossover op amps offered by Analog Devices, Inc., including the AD8506/AD8508, which also operate from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies.Applications Pressure and position sensors Remote security Medical monitors Battery-powered consumer equipment Hazard detectors

The ADA4817-1 (single) and ADA4817-2 (dual) FastFET™ amplifiers are unity-gain stable, ultrahigh speed, voltage feedback amplifiers with FET inputs. These amplifiers were developed with the Analog Devices, Inc., proprietary eXtra fast complementary bipolar (XFCB) process, which allows the amplifiers to achieve ultralow noise (4 nV/√Hz; 2.5 fA/√Hz) as well as very high input impedances.With 1.3 pF of input capacitance, low noise (4 nV/√Hz), low offset voltage (2 mV maximum), and 1050 MHz −3 dB bandwidth, the ADA4817-1/ADA4817-2 are ideal for data acquisition front ends as well as wideband transimpedance applications, such as photodiode preamps.With a wide supply voltage range from 5 V to 10 V and the ability to operate on either single or dual supplies, the ADA4817-1/ADA4817-2 are designed to work in a variety of applications including active filtering and analog-to-digital converter (ADC) driving. The ADA4817-1 is available in a 3 mm × 3 mm, 8-lead LFCSP and 8-lead SOIC, and the ADA4817-2 is available in a 4 mm × 4 mm, 16-lead LFCSP. These packages feature a low distortion pinout that improves second harmonic distortion and simplifies circuit board layout. They also feature an exposed pad that provides a low thermal resistance path to the printed circuit board (PCB). The EPAD enables more efficient heat transfer and increases reliability. These products are rated to work over the extended industrial temperature range (−40°C to +105°C).Applications Photodiode amplifiers Data acquisition front ends Instrumentation Filters ADC drivers Output buffers

The ADA4857 is a unity gain stable, high speed, voltage feedback amplifier with low distortion, low noise, and high slew rate. With a spurious-free dynamic range (SFDR) of −88 dBc @ 10 MHz, the ADA4857 is an ideal solution for a variety of applications including ultrasounds, ATE, active filters, and ADC drivers. The Analog Devices, Inc., proprietary next-generation XFCB process and innovative architecture enables such high performance amplifiers. The ADA4857 has 850 MHz bandwidth, 2800 V/μs slew rate, and settles to 0.1% in 15 ns. With a wide supply voltage range (5 V to 10 V), the ADA4857 is an ideal candidate for systems that require high dynamic range, precision, and speed. The ADA4857-1 amplifier is available in a 3 mm × 3 mm, 8-lead LFCSP and a standard 8-lead SOIC. The ADA4857-2 is available in a 4 mm × 4 mm, 16-lead LFSCP. The LFCSP features an exposed paddle that provides a low thermal resistance path to the printed circuit board (PCB). This path enables more efficient heat transfer and increases reliability. The ADA4857 works over the extended industrial temperature range (−40°C to +125°C). ApplicationsInstrumentationIF and baseband amplifiersActive filtersADC driversDAC bufferstable.nopad td, table.nopad th { padding: 0px; margin: 0px; vertical-align: top;}