Datasheet

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TYPICAL CHARACTERISTICS ADS7887, ADS7888
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
2.35 3.075 3.8 4.525 5.25
I
DD
− Supply Current − mA
V
DD
− Supply Voltage − V
25C
125C
−40C
f
s
= 1.25 MSPS,
f
SCLK
= 25 MHz
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 50 100 150 200 250 300 350 400 450
I
DD
− Supply Current − mA
f
s
− Sample Rate − KSPS
V
DD
= 5 V,
f
SCLK
= 25 MHz,
T
A
= 25C,
Power Down SCLK = Free Running
0
0.20
0.40
0.60
0.80
1
1.20
1.40
1.60
1.80
0 5 10 15 20 25
I
DD
− Supply Current − mA
f
SCLK
− SCLK Frequency − MHz
5 V V
DD
2.35 V V
DD
T
A
= 25C
30
20
10
0
−10
−20
−30
−40
−40
−20 20 8060 120
@ 5 V Input
@ 0 V Input
Leakage Current − nA
T
A
− Free-Air Temperature − C
0 40 100
ADS7887
ADS7888
SLAS468 – JUNE 2005
SUPPLY CURRENT SUPPLY CURRENT SUPPLY CURRENT
vs vs vs
SUPPLY VOLTAGE SCLK FREQUENCY SAMPLE RATE
Figure 6. Figure 7. Figure 8.
ANALOG INPUT
LEAKAGE CURRENT
vs
FREE-AIR TEMPERATURE
Figure 9.
11