Datasheet

AD7780
Rev. A | Page 4 of 16
Parameter Min Typ Max Unit Test Conditions/Comments
LOGIC INPUTS
SCLK, FILTER, GAIN,
PDRST
2
Input Low Voltage, V
INL
0.4 V DV
DD
= 3 V
0.8 V DV
DD
= 5 V
Input High Voltage, V
INH
1.8 V DV
DD
= 3 V
2.4 V DV
DD
= 5 V
SCLK (Schmitt-Triggered Input)
Hysteresis
100 mV DV
DD
= 3 V
140 mV DV
DD
= 5 V
Input Currents ±2 µA V
IN
= DV
DD
or GND
Input Capacitance 10 pF All digital inputs
LOGIC OUTPUT (DOUT/
RDY
)
Output High Voltage, V
OH
2
DV
DD
− 0.6 V DV
DD
= 3 V, I
SOURCE
= 100 µA
4 V DV
DD
= 5 V, I
SOURCE
= 200 µA
Output Low Voltage, V
OL
2
0.4 V DV
DD
= 3 V, I
SINK
= 100 µA
0.4 V DV
DD
= 5 V, I
SINK
= 1.6 mA
Floating-State Leakage Current ±2 µA
Floating-State Output Capacitance 10 pF
Data Output Coding Offset binary
POWER REQUIREMENTS
3
Power Supply Voltage
AV
DD
to GND 2.7 5.25 V
DV
DD
to GND 2.7 5.25 V
Power Supply Currents
I
DD
Current 115 µA Gain = 1, AV
DD
= 3 V
130 160 µA Gain = 1, AV
DD
= 5 V
330 µA Gain = 128, AV
DD
= 3 V
420 500 µA Gain = 128, AV
DD
= 5 V
I
DD
(Power-Down/Reset Mode) 10 µA
1
Temperature range is −40°C to +105°C.
2
This specification is not production tested but is supported by characterization data at initial product release.
3
Digital inputs are equal to DV
DD
or GND.