Datasheet

AD7739 Data Sheet
Rev. A | Page 4 of 32
Parameter Min Typ Max Unit Test Conditions/Comments
REFERENCE INPUTS
REFIN(+) to REFIN(−) Voltage
1, 9
2.475 2.5 2.525 V
NOREF Trigger Voltage 0.5 V NOREF bit in channel status register
REFIN(+), REFIN(−) Common-Mode/
Absolute Voltage
1
0 AV
DD
V
Reference Input DC Current
10
400 μA
SYSTEM CALIBRATION
1, 11
Full-Scale Calibration Limit +1.05 × FS V
Zero-Scale Calibration Limit −1.05 × FS V
Input Span 0.8 × FS 2.1 × FS V
LOGIC INPUTS
Input Current ±1 μA
Input Current CS
±10 μA
CS = DV
DD
−40 μA
CS
= DGND, internal pull-up resistor
Input Capacitance 5 pF
V
T+
1
1.4 2 V DV
DD
= 5 V
V
T–
1
0.8 1.4 V DV
DD
= 5 V
V
T+
– V
T–
1
0.3 0.85 V DV
DD
= 5 V
V
T+
1
0.95 2 V DV
DD
= 3 V
V
T–
1
0.4 1.1 V DV
DD
= 3 V
V
T+
– V
T–
1
0.3 0.85 V DV
DD
= 3 V
MCLK IN ONLY
Input Current ±10 μA
Input Capacitance 5 pF
V
INL
Input Low Voltage 0.8 V DV
DD
= 5 V
V
INH
Input High Voltage 3.5 V DV
DD
= 5 V
V
INL
Input Low Voltage 0.4 V DV
DD
= 3 V
V
INH
Input High Voltage 2.5 V DV
DD
= 3 V
LOGIC OUTPUTS
12
V
OL
Output Low Voltage 0.4 V I
SINK
= 800 μA, DV
DD
= 5 V
V
OH
Output High Voltage 4.0 V I
SOURCE
= 200 μA, DV
DD
= 5 V
V
OL
Output Low Voltage 0.4 V I
SINK
= 100 μA, DV
DD
= 3 V
V
OH
Output High Voltage DV
DD
− 0.6 V I
SOURCE
= 100 μA, DV
DD
= 3 V
Floating State Leakage Current ±1 μA
Floating State Leakage Capacitance 3 pF
P0, P1 INPUTS/OUTPUTS Levels referenced to analog supplies
Input Current ±10 μA
V
INL
Input Low Voltage 0.8 V AV
DD
= 5 V
V
INH
Input High Voltage 3.5 V AV
DD
= 5 V
V
OL
Output Low Voltage 0.4 V I
SINK
= 8 mA, AV
DD
= 5 V
V
OH
Output High Voltage 4.0 V I
SOURCE
= 200 μA, AV
DD
= 5 V