AD8209WBRMZ-R7 datasheet(3/16 Pages) AD

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AD8209

Rev. 0 | Page 3 of 16

SPECIFICATIONS

TOPR = −40°C to +125°C, TA = 25°C, VS = 5 V, RL = 25 kΩ (RL is the output load resistor), unless otherwise noted.

Table 1.

Parameter

Test Conditions1

Min

Typ

Max

Unit

SYSTEM GAIN

Initial

V/V

Error vs. Temperature

0.075 V ≤ VOUT ≤ (VS − 0.1 V), dc, TOPR

±0.3

Gain Drift

TOPR

−20

ppm/°C

VOLTAGE OFFSET

Initial Input Offset (Referred to Input [RTI])

VCM = 0.15 V, TA

±2

Input Offset (RTI) Over Temperature

VCM = 0 V, TOPR

±4

Voltage Offset vs. Temperature

VCM = 0 V, TOPR

−20

+20

μV/°C

INPUT

Input Impedance

Differential

360

400

440

kΩ

Common Mode

180

200

220

kΩ

VCM (Continuous)

−2

+45

CMRR2

VCM = −2 V to +45 V, dc

100

f = dc to 10 kHz,3 TOPR

PREAMPLIFIER (A1)

Gain

V/V

Gain Error

0.05 V ≤ VOUT ≤ (VS − 0.1 V), dc, TOPR

−0.3

+0.3

Output Voltage Range

0.05

VS − 0.1

Output Resistance

100

103

kΩ

OUTPUT BUFFER (A2)

Gain

V/V

Gain Error

0.075 V ≤ VOUT ≤ (VS − 0.1 V), dc, TOPR

−0.3

+0.3

Output Voltage Range4

RL = 25 kΩ, differential Input (V) = 0 V, TOPR

0.075

VS − 0.1

Input Bias Current

TOPR

Output Resistance

RL = 1 kΩ, frequency = dc

DYNAMIC RESPONSE

System Bandwidth

VIN = 0.01 V p-p, VOUT = 0.14 V p-p

kHz

Slew Rate

VIN = 0.28 V, VOUT = 4 V step

V/μs

NOISE

0.1 Hz to 10 Hz

μV p-p

Spectral Density, 1 kHz (RTI)

500

nV/√Hz

POWER SUPPLY

Operating Range

4.5

5.5

Quiescent Current

Typical, TA

1.6

Quiescent Current vs. Temperature

VOUT = 0.1 V dc, VS = 5 V, TOPR

2.7

PSRR

VS = 4.5 V to 5.5 V, TOPR

TEMPERATURE RANGE

For Specified Performance at TOPR

−40

+125

°C

1 VCM = input common-mode voltage.

2 Source imbalance < 2 Ω.

3 The AD8209 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 neglected in all applications by using a filter capacitor from Pin 3 to GND.

4 The output voltage range of the AD8209 varies depending on the load resistance and temperature. For additional information on this specification, refer to

and

Figure 12

Figure 13

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