AD7781CRZ-REEL Просмотр технического описания (PDF) - Analog Devices

Номер в каталоге

Компоненты Описание

Список матч

AD7781CRZ-REEL

20-Bit, Pin-Programmable, Low Power Sigma-Delta ADC

Analog Devices 

AD7781

OUTPUT NOISE AND RESOLUTION

Table 7 and Table 8 show the rms noise of the AD7781 for the two output data rates and gain settings when using a 3 V and a 5 V reference.

These numbers are typical and are generated with a differential input voltage of 0 V. The peak-to-peak (p-p) resolution is also listed. The

p-p resolution represents the resolution for which there is no code flicker. These numbers are typical.

Table 7. RMS Noise and Peak-to-Peak Resolution When AVDD = 3 V and VREF = 3 V

Parameter

Gain = 128

Update Rate

10 Hz

16.7 Hz

RMS Noise

C Grade

44 nV

65 nV

B Grade

55 nV

90 nV

P-P Resolution

C Grade

17.6

17.1

B Grade

17.3

16.6

10 Hz

2.4 μV

2.4 μV

18.8

18.8

Gain = 1

16.7 Hz

2.7 μV

2.7 μV

18.7

18.7

Table 8. RMS Noise and Peak-to-Peak Resolution When AVDD = 5 V and VREF = 5 V

Parameter

Gain = 128

Update Rate

10 Hz

16.7 Hz

RMS Noise

C Grade

49 nV

69 nV

B Grade

60 nV

90 nV

P-P Resolution

C Grade

18.2

17.7

B Grade

17.9

17.3

10 Hz

3.0 μV

3.0 μV

19.3

19.3

Gain = 1

16.7 Hz

2.7 μV

2.7 μV

19.4

19.4

Rev. 0 | Page 10 of 16

Share Link: