ADS7887 datasheet(11/23 Pages) BURR-BROWN

Part #	ADS7887

Description	10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS

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Manufacturer	BURR-BROWN [Burr-Brown (TI)]

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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

VDD − Supply Voltage − V

255C

1255C

−405C

fs = 1.25 MSPS,

fSCLK = 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

fs − Sample Rate − KSPS

VDD = 5 V,

fSCLK = 25 MHz,

TA = 255C,

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

fSCLK − SCLK Frequency − MHz

5 V VDD

2.35 V VDD

TA = 255C

30

20

10

0

−10

−20

−30

−40

−40 −20

20

80

60

120

@ 5 V Input

@ 0 V Input

TA − Free-Air Temperature − 5C

0

40

100

ADS7887

ADS7888

SLAS468 – JUNE 2005

SUPPLY CURRENT

vs

SUPPLY VOLTAGE

SCLK FREQUENCY

SAMPLE RATE

Figure 6.

Figure 7.

Figure 8.

ANALOG INPUT

LEAKAGE CURRENT

vs

FREE-AIR TEMPERATURE

Figure 9.

11

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