AD7991 Datasheet, PDF (5/25 Pages) Analog Devices – 4-Channel, 12-/10-/8-Bit ADC with I2CCompatible Interface in 8-Lead SOT23

Preliminary Technical Data
AD7991/AD7995/AD7999
AD7995 SPECIFICATIONS
Temperature range for Y version is −40°C to +125°C. Unless otherwise noted, VDD = 2.7 V to 5.5 V; fSCL = 3.4 Mhz Unless otherwise noted;
TA = TMIN to TMAX.
Table 3.
Parameter
DYNAMIC PERFORMANCE¹
Signal-to-Noise + Distortion (SINAD)²
Total Harmonic Distortion (THD)²
Peak Harmonic or Spurious Noise (SFDR)²
Intermodulation Distortion (IMD)²
Second Order Terms
Third Order Terms
Channel-to-Channel Isolation²
Full Power Bandwidth²
DC ACCURACY
Resolution
Integral Nonlinearity^{1, 2}
Differential Nonlinearity^{1, 2}
Offset Error²
Offset Error Matching
Offset Temperature drift
Gain Error²
Gain Error Matching
Gain Temperature drift
ANALOG INPUT
Input Voltage Range
DC Leakage Current
Input Capacitance
REFERENCE INPUT
REFIN Input Voltage Range
DC Leakage Current
REFIN Input Capacitance
Input Impedance
LOGIC INPUTS (SDA, SCL)
Input High Voltage, VINH
Input Low Voltage, VINL
Input Leakage Current, IIN
Input Capacitance, CIN3
Input Hysteresis, VHYST
LOGIC OUTPUTS (OPEN DRAIN)
Output Low Voltage, VOL
Floating-State Leakage Current
Floating-State Output Capacitance³
Output Coding
THROUGHPUT RATE
Y Version Unit
61
dB min
–75
dB max
–76
dB max
–86
dB typ
–86
dB typ
-90
dB typ
11
MHz typ
2
MHz typ
10
Bits
±0.5
LSB max
±0.5
LSB max
±2
LSB max
±0.5
LSB max
TBD
ppm/°C typ
±1.5
LSB max
±0.5
LSB max
TBD
ppm/°C typ
0 to REFIN
±1
30
V
µA max
pF typ
1.2 to VDD
±1
30
69
V min/V max
µA max
pF typ
kΩ typ
0.7 (VDD)
0.3 (VDD)
±1
10
0.1 (VDD)
V min
V max
µA max
pF max
V min
0.4
V max
0.6
V max
±1
µA max
10
pF max
Straight (Natural) Binary
18 * (1/fSCL) us max
Test Conditions/Comments
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
fa = 10.1 kHz, fb = 9.9 kHz for fSCL from 1.7 MHz
to 3.4 MHz
fa = 1.1 kHz, fb = 0.9 kHz for fSCL up to 400 kHz
FIN = 108 Hz; see the Terminology Section
@ 3 dB
@ 0.1 dB
Guaranteed no missed codes to 10 bits
When Vin3/VREF = VIN3, Vref = VDD
VIN = 0 V or VDD
ISINK = 3 mA
ISINK = 6 mA
See the Serial Interface section
Rev. PrB | Page 5 of 25