AD8232

Data Sheet

Rev. B | Page 4 of 28

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

RIGHT LEG DRIVE AMPLIFIER (A2)

Output Swing

0.1

V

Short-Circuit Current

11

mA

Integrator Input Resistor

120

150

180

kΩ

Gain Bandwidth Product

GDP

100

kHz

REFERENCE BUFFER (A3)

Offset Error

1

mV

Input Bias Current

100

pA

Short-Circuit Current Limit

12

mA

Voltage Range

0.1

V

DC LEADS OFF COMPARATORS

Threshold Voltage

V

Hysteresis

60

mV

Propagation Delay

0.5

µs

AC LEADS OFF DETECTOR

Square Wave Frequency

50

100

175

kHz

Square Wave Amplitude

200

nA p-p

Impedance Threshold

Between +IN and −IN

10

20

MΩ

Detection Delay

110

μs

FAST RESTORE CIRCUIT

Switches

S1 and S2

On Resistance

8

10

12

kΩ

Off Leakage

100

pA

Window Comparator

Threshold Voltage

From either rail

50

mV

Propagation Delay

2

µs

Switch Timing Characteristics

Feedback Recovery Switch On Time

110

ms

Filter Recovery Switch On Time

55

ms

Fast Restore Reset

2

µs

LOGIC INTERFACE

Input Characteristics

Input Voltage (AC/DC and FR)

Low

1.24

V

High

1.35

V

Input Voltage (SDN)

Low

2.1

V

High

0.5

V

Output Characteristics

LOD+ and LOD− terminals

Output Voltage

Low

0.05

V

High

2.95

V

SYSTEM SPECIFICATIONS

Quiescent Supply Current

170

230

µA

210

µA

Shutdown Current

40

500

nA

100

nA

Supply Range

2.0

3.5

V

Specified Temperature Range

0

70

°C

Operational Temperature Range

−40

+85

°C

1

Offset referred to the input of the instrumentation amplifier inputs. See the Input Referred Offsets section for additional information.