Datasheet AD8237 (Analog Devices) - 4

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AD8237 Data Sheet Parameter Test Conditions/Comments Min Typ Max Unit
Settling Time 0.01% 4 V output step Low Bandwidth Mode Pin 1 connected to −V S G = 1 80 µs G = 10 100 µs G = 100 440 µs G = 1000 4 ms High Bandwidth Mode Pin 1 connected to +V S G = 10 80 µs G = 100 100 µs G = 1000 820 µs Slew Rate Low Bandwidth Mode 0.05 V/µs High Bandwidth Mode 0.15 V/µs EMI Filter Frequency 6 MHz GAIN2 G = 1 + (R2/R1) Gain Range3 1 1000 V/V Gain Error V = 0.1 V to 4.9 V, G = 1 to G = 1000 0.005 % OUT Gain Error vs. V 15 ppm/V CM Gain vs. Temperature T = −40°C to +125°C 0.5 ppm/°C A Gain Nonlinearity V = 0.2 V to 4.8 V, R = 10 kΩ to ground OUT L G = 1, G = 10 3 ppm G = 100 6 ppm G = 1000 10 ppm OUTPUT Output Swing R = 10 kΩ to Midsupply T = +25°C −V + 0.05 +V − 0.05 V L A S S T = −40°C to 125°C −V + 0.07 +V − 0.07 V A S S R = 100 kΩ to Midsupply T = +25°C −V + 0.02 +V − 0.02 V L A S S T = −40°C to 125°C −V + 0.03 +V − 0.03 V A S S Short-Circuit Current 4 mA POWER SUPPLY Operating Range 1.8 5.5 V Quiescent Current T = +25°C 115 130 µA A T = −40°C to +125°C 150 µA A TEMPERATURE RANGE Specified −40 +125 °C 1 Specifications apply to input voltages between 0 V and 5 V. When measuring voltages beyond the supplies, there is additional offset error, bias currents increase, and input impedance decreases, especially at higher temperatures. 2 For G > 1, errors from the external resistors, R1 and R2, must be added to these specifications, including error from the FB pin bias current. 3 The AD8237 has only been characterized for gains of 1 to 1000; however, higher gains are possible. Rev. 0 | Page 4 of 28 Document Outline Features Applications General Description Pin Configuration Table of Contents Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Architecture Setting the Gain Gain Accuracy Clock Feedthrough Input Voltage Range Input Protection Filtering Radio Frequency Interference Using the Reference Pin Layout Common-Mode Rejection Ratio over Frequency Power Supplies Reference Input Bias Current Return Path Applications Information Battery Current Monitor Programmable Gain In-Amp AD8237 in an ECG Front End Outline Dimensions Ordering Guide