Datasheet AD8208 (Analog Devices) - 4

link to page 8 link to page 8 link to page 4
AD8208 Data Sheet Parameter Test Conditions1 Min Typ Max Unit
TEMPERATURE RANGE For Specified Performance at TOPR AD8208WBR, AD8208WBRM −40 +125 °C AD8208WHR, AD8208WHRM −40 +150 °C 1 VCM = input common-mode voltage. 2 Source imbalance < 2 Ω. 3 The AD8208 preamplifier exceeds 80 dB CMRR at 10 kHz. However, because the output is available only by way of the 100 kΩ resistor, even a small amount of pin-to- pin capacitance between the IN pins and the A1 and A2 pins might couple an input common-mode signal larger than the greatly attenuated preamplifier output. The effect of pin-to-pin coupling can be negated in all applications by using a filter capacitor from Pin 3 to GND. 4 The output voltage range of the AD8208 varies depending on the load resistance and temperature. For additional information on this specification, see Figure 12 and Figure 13. 5 The output voltage range of A2 assumes that Pin 3 (A1 output) and Pin 4 (A2 Input) are shorted together. A 25 kΩ load resistor used for testing. 6 The output voltage range of A2 assumes Pin 4 (A2 Input) is driven with an external voltage source. A 25 kΩ load resistor was used for testing. Rev. C | Page 4 of 20 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Applications Information High-Side Current Sensing with a Low-Side Switch High-Rail Current Sensing Low-Side Current Sensing 4 mA to 20 mA Current Loop Receiver Gain Adjustment Gains Less than 20 Gains Greater than 20 Gain Trim Internal Signal Overload Considerations Low-Pass Filtering High Line Current Sensing with LPF and Gain Adjustment Outline Dimensions Ordering Guide Automotive Products