AD7991_09 Datasheet, PDF (3/28 Pages) Analog Devices – 4-Channel, 12-/10-/8-Bit ADC with I2C-Compatible Interface in 8-Lead SOT-23

AD7991/AD7995/AD7999
SPECIFICATIONS
AD7991¹
The temperature range of the Y version is −40°C to +125°C. Unless otherwise noted, VDD = 2.7 V to 5.5 V, VREF = 2.5 V, fSCL = 3.4 MHz,
and TA = TMIN to TMAX.
Table 2.
Parameter
Min
DYNAMIC PERFORMANCE^{2, 3}
Signal-to-Noise and Distortion (SINAD)⁴ 69.5
Signal-to-Noise Ratio (SNR)⁴
70
Total Harmonic Distortion (THD)⁴
Peak Harmonic or Spurious Noise (SFDR)⁴
Intermodulation Distortion (IMD)⁴
Second-Order Terms
Third-Order Terms
Channel-to-Channel Isolation⁴
Full-Power Bandwidth⁴
DC ACCURACY^{2, 5}
Resolution
12
Integral Nonlinearity⁴
Differential Nonlinearity⁴
Offset Error⁴
Offset Error Matching
Offset Temperature Drift
Gain Error⁴
Gain Error Matching
Gain Temperature Drift
ANALOG INPUT
Input Voltage Range
0
DC Leakage Current
Input Capacitance
REFERENCE INPUT
VREF Input Voltage Range
1.2
DC Leakage Current
VREF Input Capacitance
Input Impedance
Y Version
Typ
Max
70
71
−75.5
−77.5
−92
−88
−90
14
1.5
±1
±0.5
±0.9
±0.5
±1
±5
±0.5
4.43
±2
±0.7
0.69
VREF
±1
34
4
35
5
VDD
±1
5
35
69
Unit
Test Conditions/Comments
See the Sample Delay and Bit Trial Delay
section, fIN = 10 kHz sine wave for fSCL
from 1.7 MHz to 3.4 MHz
fIN = 1 kHz sine wave for fSCL up to 400 kHz
dB
dB
dB
dB
fa = 11 kHz, fb = 9 kHz for fSCL from
1.7 MHz to 3.4 MHz
fa = 5.4 kHz, fb = 4.6 kHz for fSCL up
to 400 kHz
dB
dB
dB
fIN = 10 kHz
MHz
@ 3 dB
MHz
@ 0.1 dB
Bits
LSB
LSB
LSB
LSB
LSB
LSB
ppm/°C
LSB
LSB
ppm/°C
Guaranteed no missed codes to 12 bits
V
VREF = VIN3/VREF or VDD
μA
pF
Channel 0 to Channel 2—during
acquisition phase
pF
Channel 0 to Channel 2—outside
acquisition phase
pF
Channel 3—during acquisition phase
pF
Channel 3—outside acquisition phase
V
μA
pF
Outside conversion phase
pF
During conversion phase
kΩ
Rev. A | Page 3 of 28