Datasheet

REV. D–2–
AD7713–SPECIFICATIONS
Parameter A, S Versions
1
Unit Conditions/Comments
STATIC PERFORMANCE
No Missing Codes 24 Bits min Guaranteed by Design.
For Filter Notches ≤ 12 Hz.
22 Bits min For Filter Notch = 20 Hz.
18 Bits min For Filter Notch = 50 Hz.
15 Bits min For Filter Notch = 100 Hz.
12 Bits min For Filter Notch = 200 Hz.
Output Noise See Tables I and II Depends on Filter Cutoffs and Selected Gain.
Integral Nonlinearity ±0.0015 % of FSR max Filter Notches ≤ 12 Hz; Typically ±0.0003%.
Positive Full-Scale Error
2, 3, 4
Full-Scale Drift
5
1 µV/°C typ For Gains of 1, 2.
0.3 µV/°C typ For Gains of 4, 8, 16, 32, 64, 128.
Unipolar Offset Error
2, 4
Unipolar Offset Drift
5
0.5 µV/°C typ For Gains of 1, 2.
0.25 µV/°C typ For Gains of 4, 8, 16, 32, 64, 128.
Bipolar Zero Error
2, 4
Bipolar Zero Drift
5
0.5 µV/°C typ For Gains of 1, 2.
0.25 µV/°C typ For Gains of 4, 8, 16, 32, 64, 128.
Gain Drift 2 ppm/°C typ
Bipolar Negative Full-Scale Error
2
±0.0004 % of FSR max Typically ±0.0006%.
Bipolar Negative Full-Scale Drift
5
1 µV/°C typ For Gains of 1, 2.
0.3 µV/°C typ For Gains of 4, 8, 16, 32, 64, 128.
ANALOG INPUTS
Input Sampling Rate, f
S
See Table III
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
.
AIN1, AIN2
7
Input Voltage Range
8
For Normal Operation.
Depends on Gain Selected.
0 to +V
REF
9
V max Unipolar Input Range
(B/U Bit of Control Register = 1).
±V
REF
V max Bipolar Input Range
(B/U Bit of Control Register = 0).
Common-Mode Rejection (CMR) 100 dB min At dc and AV
DD
= 5 V.
90 dB min At dc and AV
DD
= 10 V.
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
Sampling Capacitance
6
20 pF max
AIN3
Input Voltage Range 0 to + 4 ⫻ V
REF
V max For Normal Operation. Depends on Gain
Selected.
Gain Error
11
±0.05 % typ Additional Error Contributed by Resistor
Attenuator.
Gain Drift 1 ppm/°C typ Additional Drift Contributed by Resistor
Attenuator.
Offset Error
11
4 mV max Additional Error Contributed by Resistor
Attenuator.
Input Impedance 30 kΩ min
(AV
DD
= 5 V ⴞ 5%; DV
DD
= 5 V ⴞ 5%; REF IN(+) = 2.5 V; REF IN(–) = AGND;
MCLK IN = 2 MHz, unless otherwise noted. All specifications T
MIN
to T
MAX
, unless otherwise noted.)