ADS1291IRSMT datasheet(13/83 Pages) TI2

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−180

−160

−140

−120

−100

−80

−60

−40

−20

100

150

200

250

Frequency (Hz)

PGA Gain = 1

Input = 10Hz, −0.5 dBFS

THD = −103 dB

SNR =117 dB

Data Rate =500 sps

G011

−160

−140

−120

−100

−80

−60

−40

−20

1000

2000

3000

4000

Frequency (Hz)

PGA Gain = 1

Input = 10Hz, −0.5 dBFS

THD = −101 dB

SNR = 80 dB

Data Rate = 8 ksps

G012

PGA Gain

G009

−4

−2

−1

−0.5

0.5

Input Range (Normalized to Full−Scale)

−40 °C

−20 °C

0 °C

25 °C

40 °C

50 °C

70 °C

85 °C

G010

100

110

120

100

Frequency (Hz)

Gain = 1

Gain = 2

Gain = 3

Gain = 4

Gain = 6

Gain = 8

Gain = 12

Data Rate = 8 kSPS, −0.5 dBFS

G007

−125

−115

−105

−95

−85

−75

−65

−55

100

Frequency (Hz)

Gain = 1

Gain = 2

Gain = 3

Gain = 4

Gain = 6

Gain = 8

Gain = 12

Data Rate = 8 kSPS, −0.5 dBFS

G008

ADS1291, ADS1292, ADS1292R

www.ti.com

SBAS502C – DECEMBER 2011 – REVISED APRIL 2020

Product Folder Links: ADS1291 ADS1292 ADS1292R

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Typical Characteristics (continued)

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 8. PSRR vs Frequency

Figure 9. THD vs Frequency

Figure 10. INL vs PGA Gain

Figure 11. INL vs Temperature

Figure 12. THD FFT Plot

(60-Hz Signal)

Figure 13. FFT Plot

(60-Hz Signal)

ADS1291IRSMT Datasheet(PDF) 13 Page - Texas Instruments

ADS1291IRSMT Datasheet(HTML) 13 Page - Texas Instruments

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