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WM8955BLGECO/V 参数 Datasheet PDF下载

WM8955BLGECO/V图片预览
型号: WM8955BLGECO/V
PDF下载: 下载PDF文件 查看货源
内容描述: 立体声DAC便携式音频应用 [Stereo DAC For Portable Audio Applications]
分类和应用: 商用集成电路便携式
文件页数/大小: 44 页 / 668 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
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WM8955BL  
Production Data  
ELECTRICAL CHARACTERISTICS  
Test Conditions  
DCVDD = 1.5V, AVDD = HPVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.  
PARAMETER  
SYMBOL  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
DAC to Line-Out (10kΩ / 50pF load)  
Signal to Noise Ratio  
SNR  
THD  
AVDD = 3.3V  
(L/ROUT1 and L/ROUT2)  
90  
89  
98  
95  
dB  
(A-weighted)  
AVDD = 1.8V  
(L/ROUT2 only)  
Total Harmonic Distortion  
AVDD = 3.3V  
(L/ROUT1 and L/ROUT2)  
-86  
-82  
100  
-75  
-60  
dB  
AVDD = 1.8V  
(L/ROUT2 only)  
Channel Separation  
1kHz signal  
dB  
V rms  
dB  
Analogue Mixer Inputs (LINEINL/R to L/ROUT1 with 10kΩ / 50pF load)  
Full-scale Input Signal Level  
VINFS  
AVDD = 3.3V  
AVDD = other  
AVDD = 3.3V  
AVDD = 1.8V  
1.0  
AVDD/3.3  
98  
Signal to Noise Ratio  
Line-in to Line-Out  
(A-weighted)  
SNR  
95  
Total Harmonic Distortion  
THD  
AVDD = 3.3V  
AVDD = 1.8V  
-94  
-90  
dB  
Input Resistance  
RLINEIN  
PGA gain = 0dB  
PGA gain = +6dB  
PGA gain = 0dB  
PGA gain = +6dB  
PGA gain = 0dB  
PGA gain = +6dB  
18  
6
20.5  
10.5  
10.25  
5.25  
20  
kΩ  
(signal enters one mixer only)  
Input Resistance  
(signal enters two mixers)  
MONOIN+/- input resistance  
RMONOIN  
18  
18  
kΩ  
dB  
20  
Mute Attenuation  
91  
Analogue Outputs (LOUT1/2, ROUT1/2, MONOOUT)  
0dB Full scale output voltage  
AVDD = 3.3V  
AVDD = other  
0.95  
1
AVDD/3.3  
94  
1.05  
Vrms  
dB  
Mute attenuation  
1kHz, full scale signal  
Headphone Output (LOUT1/2, ROUT1/2 with 16 or 32Ω load)  
Output Power per channel  
Total Harmonic Distortion  
PO  
Output power is very closely correlated with THD; see below.  
THD  
HPVDD=1.8V, RL=32Ω  
0.018  
-75  
%
PO=5mW  
HPVDD=1.8V, RL=16Ω  
PO=5mW  
dB  
0.025  
-72  
HPVDD=3.3V, RL=32Ω,  
0.013  
-78  
PO=20mW  
HPVDD=3.3V, RL=16Ω,  
0.011  
-79  
0.03  
-70  
PO=20mW  
Signal to Noise Ratio  
(A-weighted)  
SNR  
HPVDD = 3.3V  
92  
89  
96  
dB  
HPVDD = 1.8V  
(L/ROUT2 only)  
95  
PD Rev 4.1 February 2007  
6
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