Datasheet AD526 (Analog Devices)

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Software Programmable Gain Amplifier AD526 FEATURES PIN CONFIGURATION Digitally Programmable Binary Gains from 1 to 16 Two-Chip Cascade Mode Achieves Binary Gain from 1 to 256 DIG GND 1 16 A1 Gain Error: NULL 2 15 A0 0.01% Max, Gain = 1, 2, 4 (C Grade) V 3 14 IN CS 0.02% Max, Gain = 8, 16 (C Grade) NULL 4 AD526 13 CLK 0.5 ppm/
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C Drift Over Temperature TOP VIEW ANALOG GND 2 5 12 A2 Fast Settling Time (Not to Scale) ANALOG GND 1 6 11 B 10 V Signal Change: –V 7 10 0.01% in 4.5
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s (Gain = 16) S +VS Gain Change: V 8 9 OUT SENSE VOUT FORCE 0.01% in 5.6
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s (Gain = 16) Low Nonlinearity:
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0.005% FSR Max (J Grade) Excellent DC Accuracy: Offset Voltage: 0.5 mV Max (C Grade) Offset Voltage Drift: 3
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V/
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C (C Grade) TTL-Compatible Digital Inputs PRODUCT DESCRIPTION
The AD526 is a single-ended, monolithic software program-
APPLICATION HIGHLIGHTS
mable gain amplifier (SPGA) that provides gains of 1, 2, 4, 8 1.
Dynamic Range Extension for ADC Systems:
A single and 16. It is complete, including amplifier, resistor network AD526 in conjunction with a 12-bit ADC can provide and TTL-compatible latched inputs, and requires no external 96 dB of dynamic range for ADC systems
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components. 2.
Gain Ranging Preamps:
The AD526 offers complete digital Low gain error and low nonlinearity make the AD526 ideal for gain control with precise gains in binary steps from 1 to 16. precision instrumentation applications requiring programmable Additional gains of 32, 64, 128 and 256 are possible by cas- gain. The small signal bandwidth is 350 kHz at a gain of 16. In cading two AD526s
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addition, the AD526 provides excellent dc precision. The FET- input stage results in a low bias current of 50 pA. A guaranteed
ORDERING GUIDE
maximum input offset voltage of 0.5 mV max (C grade) and low gain error (0.01%, G = 1, 2, 4, C grade) are accomplished using
Temperature Package Package
Analog Devices’ laser trimming technology.
Model Range Descriptions Options
To provide flexibility to the system designer, the AD526 can be AD526JN Commercial 16-Lead Plastic DIP N-16 operated in either latched or transparent mode. The force/sense AD526AD Industrial 16-Lead Cerdip D-16 configuration preserves accuracy when the output is connected AD526BD Industrial 16-Lead Cerdip D-16 to remote or low impedance loads. AD526CD Industrial 16-Lead Cerdip D-16 AD526SD Military 16-Lead Cerdip D-16 The AD526 is offered in one commercial (0°C to +70°C) grade, AD526SD/883B Military 16-Lead Cerdip D-16 J, and three industrial grades, A, B and C, which are specified 5962-9089401MEA* Military 16-Lead Cerdip D-16 from –40°C to +85°C. The S grade is specified from –55°C to *Refer to official DESC drawing for tested specifications. +125°C. The military version is available processed to MIL- STD 883B, Rev C. The J grade is supplied in a 16-lead plastic DIP, and the other grades are offered in a 16-lead hermetic side-brazed ceramic DIP. REV. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties
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