Datasheet

AD7788/AD7789
Rev. B | Page 5 of 20
AD7788/AD7789
Table 3.
Parameter AD7788A, AD7788B/AD7789B Unit Test Conditions/Comments
LOGIC INPUTS
All Inputs Except SCLK
1
V
INL
, Input Low Voltage 0.8 V max V
DD
= 5 V
0.4 V max V
DD
= 3 V
V
INH
, Input High Voltage 2.0 V min V
DD
= 3 V or 5 V
SCLK Only (Schmitt-Triggered Input)
1
V
T
(+) 1.4/2 V min/V max V
DD
= 5 V
V
T
(−) 0.8/1.4 V min/V max V
DD
= 5 V
V
T
(+) − V
T
(−) 0.3/0.85 V min/V max V
DD
= 5 V
V
T
(+) 0.9/2 V min/V max V
DD
= 3 V
V
T
(−) 0.4/1.1 V min/V max V
DD
= 3 V
V
T
(+) − V
T
(−) 0.3/0.85 V min/V max V
DD
= 3 V
Input Currents ±1 μA max V
IN
= V
DD
Input Capacitance 10 pF typ All digital inputs
LOGIC OUTPUTS
V
OH
, Output High Voltage
1
V
DD
− 0.6 V min V
DD
= 3 V, I
SOURCE
= 100 μA
V
OL
, Output Low Voltage
1
0.4 V max V
DD
= 3 V, I
SINK
= 100 μA
V
OH
, Output High Voltage
1
4 V min V
DD
= 5 V, I
SOURCE
= 200 μA
V
OL
, Output Low Voltage
1
0.4 V max V
DD
= 5 V, I
SINK
= 1.6 mA
Floating-State Leakage Current ±1 μA max
Floating-State Output Capacitance 10 pF typ
Data Output Coding Offset binary
POWER REQUIREMENTS
2
Power Supply Voltage
V
DD
− GND 2.5/5.25 V min/max AD7789, AD7788 B grade
2.7/5.25 V min/max AD7788 A grade
Power Supply Currents
I
DD
Current 75 μA max 65 μA typ, V
DD
= 3.6 V
80 μA max 73 μA typ, V
DD
= 5.25 V
I
DD
(Power-Down Mode) 1 μA max
1
Specification is not production tested but is supported by characterization data at initial product release.
2
Digital inputs equal to V
DD
or GND.