Datasheet

AD7992
Rev. 0 | Page 3 of 28
SPECIFICATIONS
Temperature range for B version is −40°C to +125°C. Unless otherwise noted, V
DD
= 2.7 V to 5.5 V; REF
IN
= 2.5 V to V
DD
. For the
AD7992-0, all specifications apply for f
SCL
up to 400 kHz; for the AD7992-1 all specifications apply for f
SCL
up to 3.4 MHz. All
specifications are for both single-channel mode and dual-channel mode, Unless otherwise noted; T
A
= T
MIN
to T
MAX
.
Table 2.
Parameter B Version Unit Test Conditions/Comments
DYNAMIC PERFORMANCE
1
F
IN
= 10 kHz sine wave for f
SCL
from 1.7 MHz to
3.4 MHz
F
IN
= 1 kHz sine wave for f
SCL
up to 400 kHz
Signal-to-Noise + Distortion (SINAD)
2
70.5 dB min
Signal-to-Noise Ratio (SNR)
2
71 dB min
Total Harmonic Distortion (THD)
2
–78 dB max
Peak Harmonic or Spurious Noise (SFDR)
2
–79 dB max
Intermodulation Distortion (IMD)
2
fa = 10.1 kHz, fb = 9.9 kHz for f
SCL
from 1.7 MHz
to 3.4 MHz
fa = 1.1 kHz, fb = 0.9 kHz for f
SCL
up to 400 kHz
Second-Order Terms –90 dB typ
Third-Order Terms –90 dB typ
Aperture Delay
2
10 ns max
Aperture Jitter
2
50 ps typ
Channel-to-Channel Isolation
2
−90
dB typ F
IN
= 108 Hz; see the Terminology section
Full Power Bandwidth
2
11 MHz typ @ 3 dB
2 MHz typ @ 0.1 dB
DC ACCURACY
Resolution 12 Bits
Integral Nonlinearity
1, 2
±1 LSB max
±0.2 LSB typ
Differential Nonlinearity
1, 2
+1/–0.9 LSB max Guaranteed no missed codes to 12 bits
±0.2 LSB typ
Offset Error
2
±4 LSB max
Mode 1 (
CONVST mode)
±6 LSB max Mode 2 (command mode)
Offset Error Match
2
±1 LSB max Dual-channel mode
Gain Error
2
±2 LSB max
Gain Error Match
2
±1 LSB max Dual-channel mode
ANALOG INPUT
Input Voltage Range 0 to REF
IN
V
DC Leakage Current ±1 µA max
Input Capacitance 30 pF typ
REFERENCE INPUT
REF
IN
Input Voltage Range 1.2 to V
DD
V min/V max
DC Leakage Current ±1 µA max
Input Impedance 69 kΩ typ
LOGIC INPUTS (SDA, SCL)
Input High Voltage, V
INH
0.7 (V
DD
) V min
Input Low Voltage, V
INL
0.3 (V
DD
) V max
Input Leakage Current, I
IN
±1 µA max V
IN
= 0 V or V
DD
Input Capacitance, C
IN
3
10 pF max
Input Hysteresis, V
HYST
0.1 (V
DD
) V min
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