Cirrus-logic CS43L21 Manuel d'utilisateur télécharger pdf (Page 56)

56 DS723F1

CS43L21

G = 0.6047

G = 0.7099

G = 0.8399

G = 1.0000

G = 1.1430

Legend

-100

-20

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

0 60m6m 12m 18m 24m 30m 36m 42m 48m 54m

Figure 23. THD+N vs. Output Power per Channel at 1.8 V (32  load)

VA_HP = VA = 1.8

NOTE: Graph shows the out-

put power per channel (i.e.

Output Power = 22 mW into

single 32  and 44 mW into

stereo 32  with THD+N = -

75 dB).

G = 0.6047

G = 0.7099

G = 0.8399

G = 1.0000

G = 1.1430

Legend

-100

-20

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

0 60m5m 10m 15m 20m 25m 30m 35m 40m 45m 50m 55m

Figure 24. THD+N vs. Output Power per Channel at 2.5 V (32  load)

VA_HP = VA = 2.5 V

NOTE: Graph shows the out-

put power per channel (i.e.

Output Power = 42 mW into

single 32  and 84 mW into

stereo 32  with THD+N = -

75 dB).

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 62 63 64

FEATURES 1
SYSTEM FEATURES 1
™ and SPI™ control) 1
GENERAL DESCRIPTION 2
TABLE OF CONTENTS 3
LIST OF FIGURES 4
LIST OF TABLES 5
6 DS723F1 6
6
Pin Name # Pin Description 6
DS723F1 7 7
DS723F1 9 9
10 DS723F1 10
ABSOLUTE MAXIMUM RATINGS 11
0.022 F 15
Repeated 18
= -100 A) 20
= 100 A) 20
(Note 17) 20
POWER CONSUMPTION 21
4. APPLICATIONS 22
4.2 Hardware Mode 23
4.3 Analog Outputs 24
4.3.1 De-Emphasis Filter 24
4.3.2 Volume Controls 25
4.3.3 Mono Channel Mixer 25
4.3.4 Beep Generator 25
4.3.5 Tone Control 26
4.3.6 Limiter 26
Software 27
Controls: 27
4.3.8 On-Chip Charge Pump 28
4.4 Serial Port Clocking 28
4.4.1 Slave 29
4.4.2 Master 29
4.5 Digital Interface Formats 30
4.6 Initialization 31
DS723F1 33 33
4.9 Software Mode 34
4.9.1 SPI Control 34
4.9.2 I²C Control 34
4 5 6 7 24 25 35
4.9.3.1 Map Increment (INCR) 36
5. REGISTER QUICK REFERENCE 37
38 DS723F1 38
DS723F1 39 39
6. REGISTER DESCRIPTION 40
76543210 41
6.6 DAC Control (Address 09h) 43
6.12 AOUTx Volume Control: 49
7. ANALOG PERFORMANCE PLOTS 55
8.1 Auto Detect Enabled 58
8.2 Auto Detect Disabled 59
9. PCB LAYOUT CONSIDERATIONS 60
10.DIGITAL FILTERS 61
11.PARAMETER DEFINITIONS 62
12.REFERENCES 62
13.PACKAGE DIMENSIONS 63
THERMAL CHARACTERISTICS 63
14.ORDERING INFORMATION 64
15.REVISION HISTORY 64

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Cirrus-logic CS43L21 Manuel d'utilisateur Page 56

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