Cirrus-logic CS5581 Instrukcja Użytkownika Pobierz pdf (Strona 23)

CS5581

DS796PP1 23

3/25/08

14:34

3.9 Digital Filter Characteristics

The digital filter is designed for fast settling, therefore it exhibits very little in-band attenuation. The filter

attenuation is 0.26347 dB at 100 kHz when sampling at 200 kSps.

Figure 18. CS5581 Spectral Response (DC to fs/2)

Figure 19. CS5581 Spectral Response (DC to 20 kHz)

Figure 20. CS5581 Spectral Response (DC to 8fs)

-0.30

-0.25

-0.20

-0.15

-0.10

-0.05

0.00

0 20k 40k 60k 80k 100k

Frequency (Hz)

-0.01049 dB

-0.16813 dB

-0.26347 dB

fs = 200 kSps

-0.04206 dB

-0.09443 dB

-0.015

-0.01

-0.005

0.00

0 5k 10k 15k 20

Frequency (Hz)

-0.002622 dB

-0.005901 dB

-0.01049 dB

fs = 200 kSps

-0.006283 dB

-120

-100

-80

-60

-40

-20

0 400k 800k 1.2M 1.6M

Frequency (Hz)

fs = 200 kSps

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 31 32

Features & Description 1
General Description 1
TABLE OF CONTENTS 2
LIST OF FIGURES 3
LIST OF TABLES 3
ANALOG CHARACTERISTICS T 4
(CONTINUED) T 5
SWITCHING CHARACTERISTICS 6
MSB MSB–1 7
DIGITAL CHARACTERISTICS 10
GUARANTEED LOGIC LEVELS 11
ABSOLUTE MAXIMUM RATINGS 12
2. OVERVIEW 13
3. THEORY OF OPERATION 13
3.2 Clock 14
3.4 Analog Input 15
3.3 Voltage Reference 15
3.5 Output Coding Format 16
DS796PP1 17 17
±2.5V Analog Supplies 17
18 DS796PP1 18
DS796PP1 19 19
3.8 Converter Performance 20
DS796PP1 21 21
Output (Codes) 22
DS796PP1 23 23
3.10 Serial Port 24
DS796PP1 25 25
26 DS796PP1 26
DS796PP1 27 27
4. PIN DESCRIPTIONS 28
24L SSOP PACKAGE DRAWING 31
6. ORDERING INFORMATION 32
8. REVISION HISTORY 32

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