ADS129X datasheet(12/83 Pages) TI2

12 / 83 page

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

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

200

400

600

800

1000

1200

Input−Referred Noise (µV)

G002

−4

−3

−2

−1

Time (sec)

Peak−to−Peak Over 10 seconds = 8 µV

G001

ADS1291, ADS1292, ADS1292R

SBAS502C – DECEMBER 2011 – REVISED APRIL 2020

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Product Folder Links: ADS1291 ADS1292 ADS1292R

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6.7 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)

Figure 2. Input-Referred Noise

Figure 3. Noise Histogram

Figure 4. Internal Reference vs Temperature

Figure 5. CMRR vs Frequency

Figure 6. Leakage Current vs Input Voltage

Figure 7. Leakage Current vs Temperature

ADS129X Datasheet(PDF) 12 Page - Texas Instruments

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