參數(shù)資料
型號: CS42L51-DNZ
廠商: Cirrus Logic Inc
文件頁數(shù): 11/43頁
文件大?。?/td> 0K
描述: IC CODEC STEREO W/HDPN AMP 32QFN
標準包裝: 60
類型: 立體聲音頻
數(shù)據(jù)接口: 串行
分辨率(位): 24 b
ADC / DAC 數(shù)量: 2 / 2
三角積分調(diào)變:
動態(tài)范圍,標準 ADC / DAC (db): 98 / 98
電壓 - 電源,模擬: 1.8V,2.5V
電壓 - 電源,數(shù)字: 1.8V,2.5V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-QFN
供應(yīng)商設(shè)備封裝: 32-QFN 裸露焊盤(5x5)
包裝: 托盤
產(chǎn)品目錄頁面: 754 (CN2011-ZH PDF)
配用: 598-1005-ND - BOARD EVAL FOR CS42L51 CODEC
其它名稱: 598-1627
DS679F1
19
CS42L51
HEADPHONE OUTPUT POWER CHARACTERISTICS
Test conditions (unless otherwise specified): Input test signal is a full-scale 997 Hz sine wave; measurement band-
width is 10 Hz to 20 kHz; Sample Frequency = 48 kHz; test load RL = 16 , CL = 10 pF (see Figure 3).
8.
One-half LSB of triangular PDF dither is added to data.
9.
Full-scale output voltage and power is determined by the gain setting, G, in register “Headphone Analog
Gain (HP_GAIN[2:0])” on page 57. High gain settings at certain VA and VA_HP supply levels may
cause clipping when the audio signal approaches full-scale, maximum power output, as shown in
10. See Figure 3. RL and CL reflect the recommended minimum resistance and maximum capacitance re-
quired for the internal op-amp's stability and signal integrity. In this circuit topology, CL will effectively
move the band-limiting pole of the amp in the output stage. Increasing this value beyond the recom-
mended 150 pF can cause the internal op-amp to become unstable.
11. VA_HP settings lower than VA reduces the headroom of the headphone amplifier. As a result, the DAC
may not achieve the full THD+N performance at full-scale output voltage and power.
Parameter
VA = 2.5V (nominal)
Min
Typ
Max
VA = 1.8V (nominal)
Min
Typ
Max
Unit
AOUTx Power Into RL = 16
HP_GAIN[2:0]
Analog
Gain (G)
VA_HP
000
0.3959
1.8 V
-
14
-
7
-
mWrms
2.5 V
-
14
-
7
-
mWrms
001
0.4571
1.8 V
-
19
-
10
-
mWrms
2.5 V
-
19
-
10
-
mWrms
010
0.5111
1.8 V
-
23
-
12
-
mWrms
2.5 V
-
23
-
12
-
mWrms
011 (default)
0.6047
1.8 V
-17
-
mWrms
2.5 V
-
32
-
17
-
mWrms
100
0.7099
1.8 V
-23
-
mWrms
2.5 V
-
44
-
23
-
mWrms
101
0.8399
1.8 V
mWrms
2.5 V
-32
-
mWrms
110
1.0000
1.8 V
(Note 9, 11)
mWrms
2.5 V
mWrms
111
1.1430
1.8 V
mWrms
2.5 V
mWrms
AOUTx
AGND
R
L
C
L
0.022
F
51
Figure 3. Headphone Output Test Load
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