Datasheet

AD7910/AD7920
Rev. C | Page 5 of 24
Parameter
1
A Grade
, 1 2
B Grade
1, 2
Unit Test Conditions/Comments
LOGIC INPUTS
Input High Voltage, V
INH
2.4 2.4 V min
1.8 1.8 V min V
DD
= 2.35 V
Input Low Voltage, V
INL
0.8 0.8 V max V
DD
= 3.6 V to 5.25 V
0.4 0.4 V max V
DD
= 2.35 V to 3.6 V
Input Current, I
IN
, SCLK Pin ±0.5 ±0.5 A max Typically 10 nA, V
IN
= 0 V or V
DD
Input Current, I
IN
, CS Pin
±10 ±10 nA typ
Input Capacitance, C
IN
6
5 5 pF max
LOGIC OUTPUTS
Output High Voltage, V
OH
V
DD
− 0.2 V
DD
− 0.2 V min I
SOURCE
= 200 µA, V
DD
= 2.35 V to 5.25 V
Output Low Voltage, V
OL
0.4 0.4 V max I
SINK
= 200 µA
Floating-State Leakage Current ±1 ±1 A max
Floating-State Output Capacitance
6
5 5 pF max
Output Coding Straight (natural) binary
CONVERSION RATE
Conversion Time 3.2 3.2 s max 16 SCLK cycles with SCLK at 5 MHz
Track-and-Hold Acquisition Time
3
250 250 ns max
Throughput Rate 250 250 kSPS max See the Serial Interface section
POWER REQUIREMENTS
V
DD
2.35/5.25 2.35/5.25 V min/max
I
DD
Digital I/Ps = 0 V or V
DD
Normal Mode (Static) 2.5 2.5 mA typ V
DD
= 4.75 V to 5.25 V, SCLK on or off
1.2 1.2 mA typ V
DD
= 2.35 V to 3.6 V, SCLK on or off
Normal Mode (Operational) 3 3 mA max V
DD
= 4.75 V to 5.25 V, f
SAMPLE
= 250 kSPS
1.4 1.4 mA max V
DD
= 2.35 V to 3.6 V, f
SAMPLE
= 250 kSPS
Full Power-Down Mode 1 1 A max Typically 50 nA
Power Dissipation
7
Normal Mode (Operational) 15 15 mW max V
DD
= 5 V, f
SAMPLE
= 250 kSPS
4.2 4.2 mW max V
DD
= 3 V, f
SAMPLE
= 250 kSPS
Full Power-Down 5 5 W max V
DD
= 5 V
3 3 W max V
DD
= 3 V
1
Temperature range from −40°C to +85°C.
2
Operational from V
DD
= 2.0 V, with input low voltage (V
INL
) 0.35 V max.
3
See the Terminology section.
4
B Grade, maximum specifications apply as typical figures when V
DD
= 4.75 V to 5.25 V.
5
SC70 values guaranteed by characterization.
6
Guaranteed by characterization.
7
See the Power vs. Throughput Rate section.