AD7715AR5 Datasheet, PDF (3/40 Pages) Analog Devices – 3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC

AD7715
SPECIFICATIONS
AD7715-5
AVDD = 5 V, DVDD = 3 V or 5 V, REF IN(+) = 2.5 V; REF IN(−) = AGND; fCLK IN = 2.4576 MHz, unless otherwise noted. All specifications
TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter ¹
STATIC PERFORMANCE
No Missing Codes
Output Noise
Integral Nonlinearity
Unipolar Offset Error²
Unipolar Offset Drift³
Bipolar Zero Error²
Bipolar Zero Drift³
Positive Full-Scale Error^{2, 4}
Full-Scale Drift^{3, 5}
Gain Error^{2, 6}
Gain Drift^{3, 7}
Bipolar Negative Full-Scale Error²
Bipolar Negative Full-Scale Drift³
ANALOG INPUTS/REFERENCE INPUTS
Input Common-Mode Rejection
(CMR)
Normal-Mode 50 Hz Rejection⁸
Normal-Mode 60 Hz Rejection⁸
Common-Mode 50 Hz Rejection⁸
Common-Mode 60 Hz Rejection⁸
Common-Mode Voltage Range⁹
Absolute AIN/REF IN Voltage⁸
Absolute/Common-Mode AIN
Voltage⁹
AIN DC Input Current⁸
AIN Sampling Capacitance⁸
AIN Differential Voltage Range¹⁰
AIN Input Sampling Rate, fS
REF IN(+) − REF IN(−) Voltage
REF IN Input Sampling Rate, fS
LOGIC INPUTS
Input Current
All Inputs Except MCLK IN
VINL, Input Low Voltage
VINL, Input Low Voltage
VINH, Input High Voltage
VINH, Input High Voltage
MCLK IN Only
VINL, Input Low Voltage
VINL, Input Low Voltage
VINH, Input High Voltage
VINH, Input High Voltage
Min
Typ
Max
Unit
16
Bits
See Table 15 to Table 18
±0.0015 % of FSR
See Table 15 to Table 22
0.5
μV/°C
See Table 15 to Table 22
0.5
μV/°C
See Table 15 to Table 22
0.5
μV/°C
See Table 15 to Table 22
0.5
ppm of
FSR/°C
±0.0015
% of FSR
1
μV/°C
0.6
μV/°C
90
98
98
150
150
AGND
AGND – 0.03
AGND + 0.05
dB
dB
dB
dB
dB
AVDD
V
AVDD + 0.03 V
AVDD − 1.5 V
1
10
0 to +VREF/GAIN¹¹
±VREF/GAIN
GAIN × fCLK IN/64
fCLK IN/8
2.5
nA
pF
nom
nom
V nom
fCLK IN/64
±10
μA
0.8
V
0.4
V
2.4
V
2.0
V
0.8
V
0.4
V
3.5
V
2.5
V
Conditions/Comments
Guaranteed by design; filter notch ≤ 60 Hz
Depends on filter cutoffs and selected gain
Filter notch ≤ 60 Hz
Typically ±0.0004%
For gains of 1 and 2
For gains of 32 and 128
Specifications for AIN and REF IN unless noted
At dc; typically 102 dB
For filter notches of 25 Hz, 50 Hz, ±0.02 × fNOTCH
For filter notches of 20 Hz, 60 Hz, ±0.02 × fNOTCH
For filter notches of 25 Hz, 50 Hz, ±0.02 × fNOTCH
For filter notches of 20 Hz, 60 Hz, ±0.02 × fNOTCH
AIN for the BUF bit of setup register = 0 and REF IN
AIN for the BUF bit of setup register = 0 and REF IN
BUF bit of setup register = 1
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 VREF
DVDD = 5 V
DVDD = 3.3 V
DVDD = 5 V
DVDD = 5 V
DVDD = 3.3 V
DVDD = 5 V
DVDD = 3.3 V
Rev. D | Page 3 of 40