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AD8275:  G = 0.2, Level Translation, 16-Bit ADC Driver

The AD8275 is a G=0.2 difference amplifier that can be used to translate +/-10V signals to a +4V level. It solves the problem typically encountered in industrial and instrumentation where +/-10V signals must be interfaced to a single supply 4V or 5V ADC. The AD8275 interfaces the two signal levels, simplifying design.

The AD8275 has fast settle time and low distortion making it suitable ...More

AD8275:  G = 0.2, Level Translation, 16-Bit ADC Driver

Product Description

The AD8275 is a G=0.2 difference amplifier that can be used to translate +/-10V signals to a +4V level. It solves the problem typically encountered in industrial and instrumentation where +/-10V signals must be interfaced to a single supply 4V or 5V ADC. The AD8275 interfaces the two signal levels, simplifying design.

The AD8275 has fast settle time and low distortion making it suitable for driving fast, successive approximation (SAR) ADCs. Its wide input voltage range and rail to rail outputs make it an easy to use building block. Single-supply operation reduces the power consumption of the amplifier and helps to protect the ADC from overdrive conditions.

Internal, matched, precision laser-trimmed resistors ensure low gain error, low gain drift of 1 ppm/°C (maximum), and high common-mode rejection of 80 dB. Low offset and low offset drift, combined with its fast settling time, make the AD8275 suitable for a variety of data acquisition applications where accurate and quick capture is required.

The AD8275 can be used as an analog front end, or it can follow buffers to level translate high voltages to a voltage range accepted by the ADC. In addition, the AD8275 can be configured for diff-erential outputs if used with a differential ADC. The AD8275 is available in a space-saving, 8-lead MSOP and is specified for performance over the −40°C to +85°C temperature range.

Applications

  • Level Translator
  • ADC Driver
  • Automated test equipment
  • Instrumentation Amplifier Building Block

    • Data Sheet, Rev. 0, 11/2008

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    • Translates ±10V to +4V
    • Drives 16-bit SAR ADCs
    • Small MSOP Package
    • Input overvoltage: +40 V to −35 V (VS = 5 V)
    • Fast settling time: 450 ns to 0.001%
    • Rail-to-rail output
    • Wide Supply Operation: +3.3V to +15V
    • High CMRR: 96 dB
    • Low gain drift: 1 ppm/°C
    • Low offset drift: 2.5 μV/°C
    • Single/Dual Supply: Single
    • Voltage Supply (Vmax) : +15V
    • Gain Setting Method: Resistor
    • Gain Range (min to max): 0.2
    • CMRR (dB): 86dB
    • Temperature Range: -40 to +85
    • Gain Error (%) max: +0.024%
    • Supply Current : 2.3mA
    • Package: MSOP
    • Vosi (µV): 500µV

    Functional Block Diagram for AD8275

    Similar Products

    arrow View Full Interactive Product Selection Table
    Part# # Channels Gain Range (min to max) Slew Rate Bandwidth G=10 (kHz typ) Rail-Rail Out Rail-Rail In CMRR (dB) Vcc-Vee Common Mode Range (V) Gain Error (%) max Gain temp co. Vosi (µV) VosiTC (µV/deg C) Input Vnoise THD+N (f=1kHz 10Vpp) (dB) Supply Current Price* (1000-4999)
    AD628 1 100 0.3V/µs 600 No Yes 75 4.5V to 36V +/- 120 +0.1 5ppm/C 1500 3 300nV/rtHz - 1.6mA $1.78
    AD629 1 1 2.1V/µs 500 No Yes 90 5V to 36V +/- 270 +0.03 10ppm/C 500 3 550nV/rtHz - 1mA $2.84
    AD8270 2 1.2 30V/µs - Yes Yes 76 5V to 36V -Vs-0.4 to +Vs+0.4 +0.05 10ppm/C 1000 2 38nV/rtHz 110 2.5mA $1.91
    AD8271 1 1.2 30V/µs - Yes Yes 80 5V to 36V -Vs-0.4 to +Vs+0.4 +0.02 2ppm/C 600 2 38nV/rtHz 110 2.6mA $1.25
    AD8273 2 2 20V/µs - No Yes 77 5V to 36V 3(-Vs)+4.5 to 3(Vs)-4.5 +0.03 2ppm/C 700 3 26nV/rtHz 112 2.5mA $1.67
    AD8274 1 2 20V/µs 10000 No Yes 77 5V to 36V 3(-Vs)+4.5 to 3(Vs)-4.5 +0.03 2ppm/C 700 3 26nV/rtHz 112 2.6mA $1.05
    AD8275 1 0.2 25V/µs - Yes Yes 86 3.3V to 15V +/-12 +0.024 1ppm/C 500 2.5 40nV/rtHz 106 2.3mA $1.60
    AD8277 2 1 1.1V/µs - Yes Yes 86 2V to 36V 2(-Vs)-0.2 to 2(Vs)-3 +0.02 1ppm/C 200 0.5 65nV/rtHz - 0.4mA $1.60
    AD8278 1 2 1.4V/µs - Yes Yes 80 2V to 36V 3(-Vs)-0.3 to 3(Vs)-4.5 +0.02 1ppm/C 100 0.3 47nV/rtHz - 0.2mA $0.95
    AMP03 1 1 9.5V/µs - No Yes 85 12V to 36V +/- 20 +0.008 - 400 - 90nV/rtHz - 2.5mA $2.81
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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.