ADS1271IPWR datasheet(9/40 Pages) TI2

9 / 40 page

ADS1271

SBAS306F − NOVEMBER 2004 − REVISED OCTOBER 2007

www.ti.com

TYPICAL CHARACTERISTICS (continued)

TA = 25°C, AVDD = 5V, DVDD = 1.8V, fCLK = 27MHz, VREFP = 2.5V, VREFN = 0V, unless otherwise noted.

Figure 7

OUTPUT SPECTRUM

0.1

100

Frequency (Hz)

−20

−40

−60

−80

−100

−120

−140

−160

−180

10k

100k

High−Resolution Mode

Shorted Input

1,048,576 Points

Figure 8

NOISE HISTOGRAM

Output (

µV)

210k

180k

150k

120k

90k

60k

30k

High−Resolution Mode

Shorted Input

1,048,576 Points

Figure 9

OUTPUT SPECTRUM

100

Frequency (Hz)

−20

−40

−60

−80

−100

−120

−140

−160

10k

100k

Low−Power Mode

IN =1kHz, −0.5dBFS

32,768 Points

Figure 10

OUTPUT SPECTRUM

100

Frequency (Hz)

−20

−40

−60

−80

−100

−120

−140

−160

10k

100k

Low−Power Mode

IN =1kHz, − 20dBFS

32,768 Points

Figure 11

OUTPUT SPECTRUM

0.1

100

Frequency (Hz)

−20

−40

−60

−80

−100

−120

−140

−160

−180

10k

100k

Low−Power Mode

Shorted Input

1,048,576 Points

Figure 12

NOISE HISTOGRAM

Output (

µV)

200k

180k

160k

140k

120k

100k

80k

60k

40k

20k

Low−Power Mode

Shorted Input

1,048,576 Points

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