CDB5501 Просмотр технического описания (PDF) - Cirrus Logic

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CDB5501

Non-aliasing, 16- & 20-bit A/D Converters

Cirrus Logic 

DYNAMIC CHARACTERISTICS

Parameter

Sampling Frequency

Output Update Rate

Filter Corner Frequency

Settling Time to +_0.0007% FS (FS Step)

20

Symbol

fs

f out

f -3dB

ts

0

-20

CLKIN = 4 MHz

-40

-60

CLKIN = 2 MHz

-80

-100

-120

CLKIN = 1 MHz

-140

1

10

100

Frequency in Hz

Frequency Response

j2 jω

CS5501 CS5503

CS5501/CS5503

Ratio

CLKIN/ 256

CLKIN /1024

CLKIN /409,600

506,880/CLKIN

Units

Hz

Sps

Hz

s

1000

j1

-σ

-2

-1

-j1

S1,2 = -1.4667 ± j1.8199

S3,4 = -1.7559 ± j1.0008

S5,6 = -1.8746 ± j0.32276

-j2

S-Domain Pole/Zero Plot (Continuous-Time Representation)

H(x) = [1 + 0.694x2 + 0.241x4 + 0.0557x6 + 0.009664x8 + 0.00134x10 + 0.000155x12]-1/2

where x = f/f-3dB, f-3dB = CLKIN/409,600, and f is the frequency of interest.

Continuous-Time Representation of 6-Pole Gaussian Filter

DS31F54

55

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