+1.25 V;
AD7715-3–SPECIFICATIONS
(AVAll = +3 V, DV =T+3 V, REF IN (+) =otherwise noted.)
REF IN(–) = AGND; f
= 2.4576 MHz unless otherwise noted. specifications
to T unless
DD
DD
CLK IN
MIN
MAX
AD7715
Parameter
STATIC PERFORMANCE
No Missing Codes
Output Noise
Integral Nonlinearity
Unipolar Offset Error
Unipolar Offset Drift
3
Bipolar Zero Error
Bipolar Zero Drift
3
Positive Full-Scale Error
4
Full-Scale Drift
3, 5
Gain Error
6
Gain Drift
3, 7
Bipolar Negative Full-Scale Error
2
Bipolar Negative Full-Scale Drift
3
ANALOG INPUTS/REFERENCE INPUTS
Input Common-Mode Rejection (CMR)
Normal-Mode 50 Hz Rejection
8
Normal-Mode 60 Hz Rejection
8
Common-Mode 50 Hz Rejection
8
Common-Mode 60 Hz Rejection
8
Common-Mode Voltage Range
9
Absolute AIN/REF IN Voltage
8
Absolute/Common-Mode AIN Voltage
9
AIN DC Input Current
8
AIN Sampling Capacitance
8
AIN Differential Voltage Range
10
AIN Input Sampling Rate, f
S
REF IN(+) – REF IN(–) Voltage
REF IN Input Sampling Rate, f
S
LOGIC INPUTS
Input Current
All Inputs Except MCLK IN
V
INL
, Input Low Voltage
V
INH
, Input High Voltage
MCLK IN Only
V
INL
, Input Low Voltage
V
INH
, Input High Voltage
LOGIC OUTPUTS (Including MCLK OUT)
V
OL
, Output Low Voltage
V
OH
, Output High Voltage
Floating State Leakage Current
Floating State Output Capacitance
13
Data Output Coding
A Version
1
16
See Tables IX to XII
±0.0015
See Note 2
0.2
See Note 2
0.2
See Note 2
0.2
See Note 2
0.2
±0.003
1
0.6
90
98
98
150
150
AGND to AV
DD
AGND – 30 mV
AV
DD
+ 30 mV
AGND + 50 mV
AV
DD
– 1.5 V
1
10
0 to +V
REF
/GAIN
11
±V
REF
/GAIN
GAIN
×
f
CLK IN
/64
f
CLK IN
/8
+1.25
f
CLK IN
/64
±10
0.8
2.0
0.4
2.5
0.4
DV
DD
– 0.6
±10
9
Binary
Offset Binary
Unit
Bits min
% of FSR max
µV/°C
typ
µV/°C
typ
µV/°C
typ
Conditions/Comments
Guaranteed by Design. Filter Notch
≤
60 Hz
Depends on Filter Cutoffs and Selected Gain
Filter Notch
≤
60 Hz
ppm of FSR/°C typ
% of FSR max
Typically
±0.0004%
µV/°C
typ
For Gains of 1 and 2
µV/°C
typ
For Gains of 32 and 128
dB min
dB min
dB min
dB min
dB min
V min to V max
V min
V max
V min
V max
nA max
pF max
nom
nom
Specifications for AIN and REF IN Unless Noted
at DC. Typically 102 dB
For Filter Notches of 25 Hz, 50 Hz,
±
0.02
×
f
NOTCH
For Filter Notches of 20 Hz, 60 Hz,
±
0.02
×
f
NOTCH
For Filter Notches of 25 Hz, 50 Hz,
±
0.02
×
f
NOTCH
For Filter Notches of 20 Hz, 60 Hz,
±
0.02
×
f
NOTCH
AIN for BUF Bit of Setup Register = 0 and REF IN
AIN for BUF Bit of Setup Register = 0 and REF IN
BUF Bit of Setup Register = 1
V nom
Unipolar Input Range (B/U Bit of Setup Register = 1)
Bipolar Input Range (B/U Bit of Setup Register = 0)
For Gains of 1 and 2
For Gains of 32 and 128
±1%
for Specified Performance. Functional with Lower V
REF
µA
max
V max
V min
V max
V min
V max
V min
µA
max
pF typ
I
SINK
= 100
µA
Except for MCLK OUT
12
I
SOURCE
= 100
µA
Except for MCLK OUT
12
Unipolar Mode
Bipolar Mode
REV. C
–3–
AD [ ANALOG DEVICES ]
