ADS1292 datasheet(13/69 Pages) TI

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−4

−3

−2

−1

Time (sec)

Peak−to−Peak Over 10 seconds = 8 µV

G001

200

400

600

800

1000

1200

Input−Referred Noise (µV)

G002

2.416

2.418

2.42

2.422

2.424

−40

−15

Temperature (°C)

G003

−135

−130

−125

−120

−115

−110

−105

−100

−95

100

Frequency (Hz)

Gain = 1

Gain = 2

Gain = 3

Gain = 4

Gain = 6

Gain = 8

Gain = 12

Data Rate = 8 kSPS

AIN = AVDD − 0.3 V to AVSS + 0.3 V

G004

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.5

1.5

2.5

8 kHz Chop Rate

32 kHz Chop Rate

64 kHz Chop Rate

Input Signal (V)

G030

0.5

1.5

2.5

−40

−15

Temperature (°C)

AVDD = 3 V, Chop = 8 k

AVDD = 3 V, Chop = 32 k

AVDD = 3 V, Chop = 64 k

AVDD = 5 V, Chop = 8 k

AVDD = 5 V, Chop = 32 k

AVDD = 5 V, Chop =64 k

G006

ADS1291

ADS1292

ADS1292R

www.ti.com

SBAS502A – DECEMBER 2011 – REVISED MARCH 2012

TYPICAL CHARACTERISTICS

At TA = +25°C, AVDD = 3 V, AVSS = 0 V, DVDD = 1.8 V, internal VREFP = 2.42 V, VREFN = AVSS, external clock =

512 kHz, data rate = 500 SPS, CFILTER = 4.7 nF, and gain = 6, unless otherwise noted.

INPUT-REFERRED NOISE

NOISE HISTOGRAM

Figure 2.

Figure 3.

INTERNAL REFERENCE vs TEMPERATURE

CMRR vs FREQUENCY

Figure 4.

Figure 5.

LEAKAGE CURRENT vs INPUT VOLTAGE

LEAKAGE CURRENT vs TEMPERATURE

Figure 6.

Figure 7.

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ADS1292 Datasheet(PDF) 13 Page - Texas Instruments

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