Datasheet

REV. D
AD7713
–3–
Parameter A, S Versions
1
Unit Conditions/Comments
REFERENCE INPUT
REF IN(+) – REF IN(–) Voltage 2.5 to AV
DD
/1.8 V min to V max For Specified Performance. Part Is
Functional with Lower V
REF
Voltages.
Input Sampling Rate, f
S
f
CLK IN
/512
Normal-Mode 50 Hz Rejection
6
100 dB min For Filter Notches of 2 Hz, 5 Hz, 10 Hz,
25 Hz, 50 Hz, ±0.02 ⫻ f
NOTCH
.
Normal-Mode 60 Hz Rejection
6
100 dB min For Filter Notches of 2 Hz, 6 Hz, 10 Hz,
30 Hz, 60 Hz, ±0.02 ⫻ f
NOTCH
.
Common-Mode Rejection (CMR) 100 dB min At DC.
Common-Mode 50 Hz Rejection
6
150 dB min For Filter Notches of 2 Hz, 5 Hz, 10 Hz,
25 Hz, 50 Hz, ±0.02 ⫻ f
NOTCH
.
Common-Mode 60 Hz Rejection
6
150 dB min For Filter Notches of 2 Hz, 6 Hz, 10 Hz,
30 Hz, 60 Hz, ±0.02 ⫻ f
NOTCH
.
Common-Mode Voltage Range
10
AGND to AV
DD
V min to V max
DC Input Leakage Current @ 25°C10 pA max
T
MIN
to T
MAX
1nA max
LOGIC INPUTS
Input Current ±10 µA max
All Inputs Except MCLK IN
V
INL
, Input Low Voltage 0.8 V max
V
INH
, Input High Voltage 2.0 V min
MCLK IN Only
V
INL
, Input Low Voltage 0.8 V max
V
INH
, Input High Voltage 3.5 V min
LOGIC OUTPUTS
V
OL
, Output Low Voltage 0.4 V max I
SINK
= 1.6 mA.
V
OH
, Output High Voltage 4.0 V min I
SOURCE
= 100 µA.
Floating State Leakage Current ±10 µA max
Floating State Output Capacitance
12
9 pF typ
TRANSDUCER BURN-OUT
Current 1.2 µA nom
Initial Tolerance @ 25°C ±10 % typ
Drift 0.1 %/°C typ
RTD EXCITATION CURRENTS
(RTD1, RTD2)
Output Current 200 µA nom
Initial Tolerance @ 25°C ±20 % max
Drift 20 ppm/°C typ
Initial Matching @ 25°C ±1% max Matching Between RTD1 and RTD2 Currents.
Drift Matching 3 ppm/°C typ Matching Between RTD1 and RTD2 Current
Drift.
Line Regulation (AV
DD
) 200 nA/V max AV
DD
= 5 V.
Load Regulation 200 nA/V max
SYSTEM CALIBRATION
AIN1, AIN2
Positive Full-Scale Calibration Limit
13
+(1.05 ⫻ V
REF
)/GAIN V max GAIN Is the Selected PGA Gain
(Between 1 and 128).
Negative Full-Scale Calibration Limit
13
–(1.05 ⫻ V
REF
)/GAIN V max GAIN Is the Selected PGA Gain
(Between 1 and 128).
Offset Calibration Limit
14, 15
–(1.05 ⫻ V
REF
)/GAIN V max GAIN Is the Selected PGA Gain
(Between 1 and 128).
Input Span
14
+(0.8 ⫻ V
REF
)/GAIN V min GAIN Is the Selected PGA Gain
(Between 1 and 128).
+(2.1 ⫻ V
REF
)/GAIN V max GAIN Is the Selected PGA Gain
(Between 1 and 128).