AD8200 Analog Devices, AD8200 Datasheet

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... The input CMV range extends from – + typical supply voltage The AD8200 is offered in die and packaged form. Both package options are specified over wide temperature ranges, making the AD8200 well suited for use in many automotive platforms. The SOIC package is specified over a temperature range of – ...

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... Source Imbalance < 2 Ω. 1 The AD8200 preamplifier exceeds 80 dB CMRR at 10 kHz. However, since the signal is available only by way of a 100 k Ω resistor, even the small amounts of pin- 2 to-pin capacitance between Pins 1, 8 and 3, 4 may couple an input common-mode signal larger than the greatly attenuated preamplifier output. The effect of pin-to- pin coupling may be neglected in all applications using filter capacitors at Node 3 ...

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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD8200 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

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... AD8200–Typical Performance Characteristics – SUPPLY VOLTAGE – Volts 0 – –10 –15 –20 – 10k TO GND L –30 – SUPPLY VOLTAGE – Volts 100 1k LOAD RESISTANCE – noted – –4 10 – –8 –5 –10 –10 –15 –12 – 100 100 5 100 90 80 ...

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... IN 2 CH1 500mV CH2 50mV CH1 THEORY OF OPERATION The AD8200 consists of a preamp and buffer arranged as shown in Figure 3. Like-named resistors have equal values. The preamp incorporates a dynamic bridge (subtractor) circuit. Identical networks (within the shaded areas), consisting and R , attenuate input signals applied to Pins 1 and 8. ...

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... Figure 1, Figure 2 illustrates the ability of the device to withstand voltages below system ground. Low Current Sensing The AD8200 can also be used in low current sensing applica- tions, such as a 4–20 mA current loop shown in Figure 4. In such applications, the relatively large shunt resistor can degrade the common-mode rejection ...

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... Signals having large spikes may have PARs more. When implementing a filter, the PAR should be considered so the output of the AD8200 preamplifier (A1) does not clip before A2, since this nonlinearity would be averaged and appear as an error at the output. To avoid this error, both amplifiers should be made to clip at the same time ...

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... A2 midpoint of the R Since the perturbations from the analog-to-digital converter are V OS/IB NULL small, the output impedance of the AD8200 will appear to be low. The transient response will, therefore, have a time constant C governed by the product of the two LAG components CALIBRATION RANGE R . For the values shown in Figure 13, this time constant is ...