CS5566(2008) 查看數據表（PDF） - Cirrus Logic

零件编号

产品描述 (功能)

生产厂家

CS5566
(Rev.:2008)

±2.5 V / 5 V, 5 kSps, 24-bit ∆Σ ADC

Cirrus Logic 

3/25/08

CS5566

Figure 16 illustrates the device with a small signal 1/1,000,000 of full scale. The signal input for figure 15

is about 8.2 microvolts peak to peak, or about 17 codes peak to peak. Figure 17 illustrates the converter

with a signal at about 2.6 microvolts peak to peak, or about 5 codes peak to peak. The CS5566 achieves

superb performance with this small signal.

Figure 18 illustrates the noise floor of the converter from 0.1 Hz to 2.5 kHz. The plot is entirely free of spu-

rious frequency content due to digital activity inside the chip.

Figure 19 illustrates a noise histogram of the converter constructed from 4096 samples.

0

-20

-40

-60

-80

-100

-120

-140

-160

-180

0

277 Hz, -130 dB

32k Samples @ 5 kSps

500

1k

1.5k

2k

2.5k

Frequency (Hz)

Figure 17. Spectral Performance, -130 dB

-60

-80

-100

Shorted Input

2M Samples @ 5 kSps

16 Averages

-120

-140

-160

-180

0.1

1

10

100

1k

2.5k

Frequency (Hz)

Figure 18. Spectral Plot of Noise with Shorted Input

100

90

4096 Samples

80

Mean = 96.32

Std. Dev. = 21.3

70

Max - Min = 150

60

50

40

30

20

10

0

Output Codes

Figure 19. Noise Histogram (4096 Samples)

22

DS806PP1

Share Link: