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AD526JN Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD526JN Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 15 page 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a Software Programmable Gain Amplifier AD526 FEATURES Digitally Programmable Binary Gains from 1 to 16 Two-Chip Cascade Mode Achieves Binary Gain from 1 to 256 Gain Error: 0.01% Max, Gain = 1, 2, 4 (C Grade) 0.02% Max, Gain = 8, 16 (C Grade) 0.5 ppm/ C Drift Over Temperature Fast Settling Time 10 V Signal Change: 0.01% in 4.5 s (Gain = 16) Gain Change: 0.01% in 5.6 s (Gain = 16) Low Nonlinearity: 0.005% FSR Max (J Grade) Excellent DC Accuracy: Offset Voltage: 0.5 mV Max (C Grade) Offset Voltage Drift: 3 V/ C (C Grade) TTL-Compatible Digital Inputs PRODUCT DESCRIPTION The AD526 is a single-ended, monolithic software program- mable gain amplifier (SPGA) that provides gains of 1, 2, 4, 8 and 16. It is complete, including amplifier, resistor network and TTL-compatible latched inputs, and requires no external components. Low gain error and low nonlinearity make the AD526 ideal for precision instrumentation applications requiring programmable gain. The small signal bandwidth is 350 kHz at a gain of 16. In addition, the AD526 provides excellent dc precision. The FET- input stage results in a low bias current of 50 pA. A guaranteed 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 Analog Devices’ laser trimming technology. To provide flexibility to the system designer, the AD526 can be operated in either latched or transparent mode. The force/sense configuration preserves accuracy when the output is connected to remote or low impedance loads. The AD526 is offered in one commercial (0 °C to +70°C) grade, J, and three industrial grades, A, B and C, which are specified from –40 °C to +85°C. The S grade is specified from –55°C to +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. PIN CONFIGURATION TOP VIEW (Not to Scale) 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 DIG GND A1 AD526 NULL A0 VIN CS NULL CLK ANALOG GND 2 A2 ANALOG GND 1 B –VS +VS VOUT SENSE VOUT FORCE One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 ORDERING GUIDE Temperature Package Package Model Range Descriptions Options AD526JN Commercial 16-Lead Plastic DIP N-16 AD526AD Industrial 16-Lead Cerdip D-16 AD526BD Industrial 16-Lead Cerdip D-16 AD526CD Industrial 16-Lead Cerdip D-16 AD526SD Military 16-Lead Cerdip D-16 AD526SD/883B Military 16-Lead Cerdip D-16 5962-9089401MEA* Military 16-Lead Cerdip D-16 *Refer to official DESC drawing for tested specifications. APPLICATION HIGHLIGHTS 1. Dynamic Range Extension for ADC Systems: A single AD526 in conjunction with a 12-bit ADC can provide 96 dB of dynamic range for ADC systems. 2. Gain Ranging Preamps: The AD526 offers complete digital gain control with precise gains in binary steps from 1 to 16. Additional gains of 32, 64, 128 and 256 are possible by cas- cading two AD526s. |
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