The OP400 is the first monolithic quad operational amplifier that features OP77-type performance. Precision performance is not sacrificed with the OP400 to obtain the space and costsavings offered by quad amplifiers.The OP400 features an extremely low input offset voltage of less than 150 μV with a drift of less than 1.2 μV/°C, guaranteed over the full military temperature range. Open-loop gain of the OP400 is more than 5 million into a 10 kΩ load, input bias current is less than 3 nA, CMR is more than 120 dB, and PSRR is less than 1.8 μV/V. On-chip Zener zap trimming is used to achieve the low input offset voltage of the OP400 and eliminates the need for offset nulling. The OP400 conforms to the industrystandard quad pinout, which does not have null terminals.The OP400 features low power consumption, drawing less than 725 μA per amplifier. The total current drawn by this quad amplifier is less than that of a single OP07, yet the OP400 offers significant improvements over this industry-standard op amp. Voltage noise density of the OP400 is a low 11 nV/√Hz at 10 Hz, half that of most competitive devices.The OP400 is an ideal choice for applications requiring multiple precision operational amplifiers and where low power consumption is critical.

The AD600/AD602 dual channel, low noise, variable gain amplifiers are optimized for use in ultrasound imaging systems, but are applicable to any application requiring precise gain, low noise and distortion, and wide bandwidth. Each independent channel provides a gain of 0 dB to +40 dB in the AD600 and -10 dB to +30 dB in the AD602. The lower gain of the AD602 results in an improved signal-to-noise ratio (SNR) at the output. However, both products have the same 1.4 nV/√Hz input noise spectral density. The decibel gain is directly proportional to the control voltage, accurately calibrated, and supply and temperature-stable.To achieve the difficult performance objectives, a proprietary circuit form, the X-AMP®, was developed. Each channel of the X-AMP comprises a variable attenuator of 0 dB to -42.14 dB followed by a high speed fixed gain amplifier. In this way, the amplifier never has to cope with large inputs, and can benefit from the use of negative feedback to precisely define the gain and dynamics. The attenuator is realized as a 7-stage R-2R ladder network having an input resistance of 100 W, laser trimmed to ±2%. The attenuation between tap points is 6.02 dB; the gain-control circuit provides continuous interpolation between these taps. The resulting control function is linear in dB.The gain-control interfaces are fully differential, providing an input resistance of ~15 M W and a scale factor of 32 dB/V (that is, 31.25 mV/dB) defined by an internal voltage reference. The response time of this interface is less than 1 µs. Each channel also has an independent gating facility that optionally blocks signal transmission and sets the dc output level to within a few millivolts of the output ground. The gating control input is TTL- and CMOS-compatible.The maximum gain of the AD600 is 41.07 dB, and the maximum gain of the AD602 is 31.07 dB; the -3 dB bandwidth of both models is nominally 35 MHz, essentially independent of the gain. The SNR for a 1 V rms output and a 1 MHz noise bandwidth is typically 76 dB for the AD600 and 86 dB for the AD602. The amplitude response is flat within ±0.5 dB from 100 kHz to 10 MHz; over this frequency range, the group delay varies by less than ±2 ns at all gain settings.Each amplifier channel can drive 100 W load impedances with low distortion. For example, the peak specified output is ±2.5 V minimum into a 500 W load, or ±1 V into a 100 W load. For a 200 W load in shunt with 5 pF, the total harmonic distortion for a ±1 V sinusoidal output at 10 MHz is typically -60 dBc.The AD600J/AD602J are specified for operation from 0°C to 70°C and are available in 16-lead PDIP (N) and 16-lead SOIC packages. The AD600A/AD602A are specified for operation from -40°C to +85°C and are available in 16-lead CERDIP (Q) and 16-lead SOIC packages. The AD600S/AD602S are specified for operation from -55°C to +125°C, are available in a 16-lead CERDIP (Q) package, and are MIL-STD-883 compliant. The AD600S/AD602S are also available under DESC SMD 5962-94572.AD600 - Gain Range: 0 dB to 40 dBAD602 - Gain Range: -10 dB to + 30 dB

The AD627 is an integrated, micropower instrumentation amplifier that delivers rail-to-rail output swing on single and dual (+2.2 V to ±18 V) supplies. The AD627 provides excellent ac and dc specifications while operating at only 85 μA maximum.The AD627 offers superior flexibility by allowing the user to set the gain of the device with a single external resistor while con-forming to the 8-lead industry-standard pinout configuration. With no external resistor, the AD627 is configured for a gain of 5. With an external resistor, it can be set to a gain of up to 1000.A wide supply voltage range (+2.2 V to ±18 V) and micropower current consumption make the AD627 a perfect fit for a wide range of applications. Single-supply operation, low power consumption, and rail-to-rail output swing make the AD627 ideal for battery-powered applications. Its rail-to-rail output stage maximizes dynamic range when operating from low supply voltages. Dual-supply operation (±15 V) and low power consumption make the AD627 ideal for industrial applications, including 4 to 20 mA loop-powered systems.The AD627 does not compromise performance, unlike other micropower instrumentation amplifiers. Low voltage offset, offset drift, gain error, and gain drift minimize errors in the system. The AD627 also minimizes errors over frequency by providing excellent CMRR over frequency. Because the CMRR remains high up to 200 Hz, line noise and line harmonics are rejected.The AD627 provides superior performance, uses less circuit board area, and costs less than micropower discrete designs.Applications4 mA to 20 mA loop-powered applicationsLow power medical instrumentation—ECG, EEGTransducer interfacingThermocouple amplifiersIndustrial process controlsLow power data acquisitionPortable battery-powered instruments

The AD711 is a high speed, precision monolithic operational amplifier offering high performance at very modest prices. Its very low offset voltage and offset voltage drift are the results of advanced laser wafer trimming technology. These performance benefits allow the user to easily upgrade existing designs that use older precision BiFETs and, in many cases, bipolar op amps.The superior ac and dc performance of this op amp makes it suitable for active filter applications. With a slew rate of 16 V/µs and a settling time of 1 µs to ±0.01%, the AD711 is ideal as a buffer for 12-bit D/A and A/D Converters and as a high-speed integrator. The settling time is unmatched by any similar IC amplifier.The combination of excellent noise performance and low input current also make the AD711 useful for photo diode preamps. Common-mode rejection of 88 dB and open loop gain of 400 V/mV ensure 12-bit performance even in high-speed unity gain buffer circuits.The AD711 is pinned out in a standard op amp configuration and is available in seven performance grades. The AD711J and AD711K are rated over the commercial temperature range of 0°C to +70°C. The AD711A is rated over the industrial temperature range of -40°C to +85°C. The AD711 is available in an 8-pin plastic mini-DIP, SOIC, small out-line, & cerdip.

The ADA4938-1 / ADA4938-2 are low noise, ultralow distortion,high speed differential amplifiers. It is an ideal choice fordriving high performance ADCs with resolutions up to 16 bitsfrom dc to 27 MHz, or up to 12 bits from dc to 74 MHz. Theoutput common-mode voltage is adjustable over a wide range,allowing the ADA4938-1/ADA4938-2 to match the input of theADC. The internal common-mode feedback loop also providesexceptional output balance as well as suppression of even-orderharmonic distortion products.Full differential and single-ended-to-differential gain configurationsare easily realized with the ADA4938-1/ADA4938-2. A simpleexternal feedback network of four resistors determines theclosed-loop gain of the amplifier.The ADA4938-1 / ADA4938-2 are fabricated using the AnalogDevices, Inc., proprietary third generation, high voltage XFCBprocess, enabling it to achieve very low levels of distortion withan input voltage noise of only 2.6 nV/√Hz. The low dc offset andexcellent dynamic performance of the ADA4938-1/ADA4938-2makes them well-suited for a wide variety of data acquisition andsignal processing applications.The ADA4938-1 (single amplifier) is available in a Pb-free,3 mm × 3 mm, 16-lead LFCSP. The ADA4938-2 (dualamplifier) is available in a Pb-free, 4 mm × 4 mm, 24-leadLFCSP. The pinouts have been optimized to facilitate layout andminimize distortion. The devices are specified to operate overthe extended industrial temperature range of −40°C to +85°C.Applications ADC drivers Single-ended-to-differential converters IF and baseband gain blocks Differential buffers Line drivers

General Purpose Amplifier 2 Circuit - 8-SO

4 MHz, 7 nV/Hz, Low Offset and Drift, High Precision Single Amplifier Features: Offset voltage: 25 μV maximum at 25°C (B grade, 8-lead SOIC, single/ dual)  50 μV maximum at 25°C (A grade, 8-lead SOIC, single/ dual)  50 μV maximum at 25°C (A grade, 14-lead SOIC, quad)  Offset voltage drift: 0.25 μV/°C maximum (B grade, 8-lead SOIC, single/dual)  0.55 μV/°C maximum (A grade, 8-lead SOIC, single/dual)  0.75 μV/°C maximum (A grade, 14-lead SOIC, quad)  MSL1 rated Low input bias current: 1 nA maximum at TA = 25°C Low voltage noise density: 6.9 nV/√Hz typical at f = 1000 Hz  CMRR, PSRR, and AV > 120 dB minimum  Low supply current: 400 μA per amplifier typical Wide gain bandwidth product: 3.9 MHz at ±5 V  Dual-supply operation: Specified at ±5 V to ±15 V  Operates at ±2.5 V to ±15 V  Unity gain stable No phase reversal  Long-term offset voltage drift (10,000 hours): 0.5 μV typical Temperature hysteresis: 1 μV typical

10 MHz, 14.5 nV/Hz, Rail-to-Rail I/O, Zero Input Crossover Distortion Amplifier Features: Power supply rejection ratio (PSRR): 98 dB minimum  Common-mode rejection ratio (CMRR): 95 dB minimum Offset voltage: 120 μV maximum Single-supply operation: 2.7 V to 5.5 V  Dual-supply operation: ±1.35 V to ±2.75 V  Wide bandwidth: 10 MHz  Rail-to-rail input and output  Low noise 2 μV p-p from 0.1 Hz to 10 Hz  14.5 nV/√Hz at 1 kHz  Very low input bias current: 2 pA maximum

Single 55 V, EMI Enhanced, Zero-Drift, Ultralow Noise, Rail-to-Rail Output Operational Amplifiers Features: Low offset voltage: 5 μV maximum Extremely low offset voltage drift: 22 nV/°C maximum Low voltage noise density:  5.8 nV/√Hz typical  117 nV p-p typical from 0.1 Hz to 10 Hz Low input bias current: 50 pA typical Unity-gain crossover: 3 MHz typical Single-supply operation: input voltage range includes ground and rail-to-rail output Wide range of operating voltages  Single-supply operation: 4.5 V to 55 V  Dual-supply operation: ±2.25 V to ±27.5 V Integrated EMI filters Unity-gain stable

Low Noise, Precision 16 V CMOS, R/R Op Amp Features: Low offset voltage: 100 µV maximum at VS = 5 V Low input bias current: 1 pA maximum Single-supply operation: 5 V to 16 V Low noise: 10 nV/√Hz Wide bandwidth: 4 MHz Unity-gain stable Small package options 3 mm × 3 mm 8-lead LFCSP 8-lead MSOP and narrow SOIC 14-lead TSSOP and narrow SOIC