Datasheet AD744 (Analog Devices)

Precision, 500 ns Settling BiFET Op Amp Data Sheet AD744 FEATURES CONNECTION DIAGRAMS AC PERFORMANCE TO-99 (H) Package 500 ns Settling to 0.01% for 10 V Step 1.5
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s Settling to 0.0025% for 10 V Step 75 V/
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s Slew Rate 0.0003% Total Harmonic Distortion (THD) 13 MHz Gain Bandwidth – Internal Compensation >200 MHz Gain Bandwidth (G = 1000) External Decompensation >1000 pF Capacitive Load Drive Capability with 10 V/
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s Slew Rate – External Compensation DC PERFORMANCE 0.5 mV max Offset Voltage (AD744B) 10
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V/
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C max Drift (AD744B) 8-Lead Plastic Mini-DIP (N) 250 V/mV min Open-Loop Gain (AD744B) 8-Lead SOIC (R) Package and Available in Plastic Mini-DIP, Plastic SOIC, Hermetic 8-Lead Cerdip (Q) Packages Cerdip, Hermetic Metal Can Packages and Chip Form Surface Mount (SOIC) Package Available in Tape and Reel in Accordance with EIA-481A Standard APPLICATIONS Output Buffers for 12-Bit, 14-Bit and 16-Bit DACs, ADC Buffers, Cable Drivers, Wideband Preamplifiers and Active Filters PRODUCT DESCRIPTION
The AD744 is a fast-settling, precision, FET input, monolithic gains. This makes the AD744 ideal for use as ac preamps in operational amplifier. It offers the excellent dc characteristics digital signal processing (DSP) front ends. of the AD711 BiFET family with enhanced settling, slew rate, The AD744 is available in five performance grades. The AD744J and bandwidth. The AD744 also offers the option of using and AD744K are rated over the commercial temperature range custom compensation to achieve exceptional capacitive load of 0°C to +70°C. The AD744A and AD744B are rated over drive capability. the industrial temperature range of –40°C to +85°C. The AD744T The single-pole response of the AD744 provides fast settling: is rated over the military temperature range of –55°C to +125°C 500 ns to 0.01%. This feature, combined with its high dc preci- and is available processed to MIL-STD-883B, Rev. C. sion, makes it suitable for use as a buffer amplifier for 12-bit, The AD744 is available in an 8-lead plastic mini-DIP, 8-lead 14-bit or 16-bit DACs and ADCs. Furthermore, the AD744’s low small outline, 8-lead cerdip or TO-99 metal can. total harmonic distortion (THD) level of 0.0003% and gain band- width product of 13 MHz make it an ideal amplifier for demanding
PRODUCT HIGHLIGHTS
audio applications. It is also an excellent choice for use in active 1. The AD744 is a high-speed BiFET op amp that offers excel- filters in 12-bit, 14-bit and 16-bit data acquisition systems. lent performance at competitive prices. It outperforms the The AD744 is internally compensated for stable operation as a OPA602/OPA606, LF356 and LF400. unity gain inverter or as a noninverting amplifier with a gain of 2. The AD744 offers exceptional dynamic response. It settles to two or greater. External compensation may be applied to the 0.01% in 500 ns and has a 100% tested minimum slew rate AD744 for stable operation as a unity gain follower. External of 50 V/µs (AD744B). compensation also allows the AD744 to drive 1000 pF capacitive loads, slewing at 10 V/ µs with full stability. 3. The combination of Analog Devices’ advanced processing technology, laser wafer drift trimming and well-matched Alternatively, external decompensation may be used to increase ionimplanted JFETs provide outstanding dc precision. Input the gain bandwidth of the AD744 to over 200 MHz at high offset voltage, input bias current, and input offset current are specified in the warmed-up condition; all are 100% tested.
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Document Outline FEATURES ac Performance dc Performance APPLICATIONS CONNECTION DIAGRAMS PRODUCT DESCRIPTION PRODUCT HIGHLIGHTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS METALIZATION PHOTOGRAPH TYPICAL CHARACTERISITICS POWER SUPPLY BYPASSING MEASURING AD744 SETTLING TIME EXTERNAL FREQUENCY COMPENSATION Using Decompensation to Extend the Gain Bandwidth Product HIGH-SPEED OP AMP APPLICATIONS TECHNIQUES DAC Buffers (I-to-V Converters) A HIGH-SPEED, 3 OP AMP INSTRUMENTATION AMPLIFIER CIRCUIT Minimizing Settling Time in Real-World Applications OUTLINE DIMENSIONS ORDERING GUIDE REVISION HISTORY