AMP PROG DIFF, SMD, MSOP8, 628; Amplifiers, No. of:1; Gain, Max:100; Gain, Bandwidth -3dB:440kHz; Channels, No. of:1; Voltage, Supply Min:2.25V; Voltage, Supply Max:36V; Termination Type:SMD; Case Style:MSOP; Pins, No. of:8; Temperature, Operating Range:-40°C to +85°C; Amplifier IC Type:Differential; Bandwidth:30kHz; Base Number:628; Gain, Programmable Max:100; Gain, Programmable Min:0.1; IC Generic Number:628; Logic Function Number:628; Slew Rate:0.3V/чs; Temp, Op. Max:85°C; Temp, Op. Min:-40°C; Temperature Range, IC:Commercial; Time, Settling:15чs; Voltage, Input Offset Max:1.5mV; Voltage, Supply +Nom:15V; Voltage, Vcc:15V
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Технические характеристики

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Корпус uSOP-8 MSOP8
Тип ОУ Прецизионный, Дифференциальный, PGA
Кол-во каналов ОУ
Напряжение питания
Ток собственного потребления
Программируемый коэффициент усиления
Максимальная скорость нарастания выходного сигнала
Диапазон рабочих температур
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High Common-Mode Voltage, Programmable Gain Difference Amplifier AD628 FEATURES FUNCTIONAL BLOCK DIAGRAM REXT2 +VS 7 –IN 8 G = +0.1 –IN The AD628 is a precision difference amplifier that combines excellent dc performance with high common-mode rejection over a wide range of frequencies. When used to scale high voltages, it allows simple conversion of standard control voltages or currents for use with single-supply ADCs. A wideband feedback loop minimizes distortion effects due to capacitor charging of Σ-Δ ADCs. A reference pin (VREF) provides a dc offset for converting bipolar to single-sided signals. The AD628 converts +5 V, +10 V, ±5 V, ±10 V, and 4 to 20 mA input signals to a single-ended output within the input range of single-supply ADCs. The AD628 has an input common mode and differential mode operating range of ±120 V. The high common mode, input impedance makes the device well suited for high voltage measurements across a shunt resistor. The inverting input of the buffer amplifier is available for making a remote Kelvin connection. RG –IN A2 10kΩ A1 OUT 5 +IN +IN 100kΩ 10kΩ AD628 2 3 –VS VREF 4 02992-001 +IN 1 CFILT Figure 1. 130 120 110 100 CMRR (dB) GENERAL DESCRIPTION 6 10kΩ 100kΩ APPLICATIONS High voltage current shunt sensing Programmable logic controllers Analog input front end signal conditioning +5 V, +10 V, ±5 V, ±10 V, and 4 to 20 mA Isolation Sensor signal conditioning Power supply monitoring Electrohydraulic controls Motor controls REXT1 VS = ±15V 90 80 70 VS = ±2.5V 60 50 40 30 10 100 1k 10k FREQUENCY (Hz) 100k 02992-002 High common-mode input voltage range ±120 V at VS = ±15 V Gain range 0.1 to 100 Operating temperature range: −40°C to +85°C Supply voltage range Dual supply: ±2.25 V to ±18 V Single supply: 4.5 V to 36 V Excellent ac and dc performance Offset temperature stability RTI: 10 μV/°C maximum Offset: ±1.5 V mV maximum CMRR RTI: 75 dB minimum, dc to 500 Hz, G = +1 Figure 2. CMRR vs. Frequency of the AD628 A precision 10 kΩ resistor connected to an external pin is provided for either a low-pass filter or to attenuate large differential input signals. A single capacitor implements a lowpass filter. The AD628 operates from single and dual supplies and is available in an 8-lead SOIC_N or an 8-lead MSOP. It operates over the standard industrial temperature range of −40°C to +85°C. Rev. G 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 that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 ©2002–2007 Analog Devices, Inc. All rights reserved. PDF
Документация на серию AD628 

AD628 High Common-Mode Voltage, Programmable Gain Difference Amplifier Data Sheet (Rev. G)

Дата модификации: 02.04.2007

Размер: 480.4 Кб

20 стр.

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