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WM8955BLGECO/V 数据表(PDF) 6 Page - Wolfson Microelectronics plc

部件名 WM8955BLGECO/V
功能描述  Stereo DAC For Portable Audio Applications
PDF  44 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8955BLGECO/V 数据表(HTML) 6 Page - Wolfson Microelectronics plc

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WM8955BL
Production Data
w
PD Rev 4.1 February 2007
6
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.5V, AVDD = HPVDD = 3.3V, TA = +25
oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC to Line-Out (10k
Ω / 50pF load)
AVDD = 3.3V
(L/ROUT1 and L/ROUT2)
90
98
Signal to Noise Ratio
(A-weighted)
SNR
AVDD = 1.8V
(L/ROUT2 only)
89
95
dB
AVDD = 3.3V
(L/ROUT1 and L/ROUT2)
-86
-75
Total Harmonic Distortion
THD
AVDD = 1.8V
(L/ROUT2 only)
-82
-60
dB
Channel Separation
1kHz signal
100
dB
Analogue Mixer Inputs (LINEINL/R to L/ROUT1 with 10k
Ω / 50pF load)
AVDD = 3.3V
1.0
Full-scale Input Signal Level
VINFS
AVDD = other
AVDD/3.3
V rms
AVDD = 3.3V
98
Signal to Noise Ratio
Line-in to Line-Out
(A-weighted)
SNR
AVDD = 1.8V
95
dB
AVDD = 3.3V
-94
Total Harmonic Distortion
THD
AVDD = 1.8V
-90
dB
PGA gain = 0dB
18
20.5
Input Resistance
(signal enters one mixer only)
PGA gain = +6dB
6
10.5
PGA gain = 0dB
10.25
Input Resistance
(signal enters two mixers)
RLINEIN
PGA gain = +6dB
5.25
k
Ω
PGA gain = 0dB
18
20
MONOIN+/- input resistance
RMONOIN
PGA gain = +6dB
18
20
k
Ω
Mute Attenuation
91
dB
Analogue Outputs (LOUT1/2, ROUT1/2, MONOOUT)
AVDD = 3.3V
0.95
1
1.05
0dB Full scale output voltage
AVDD = other
AVDD/3.3
Vrms
Mute attenuation
1kHz, full scale signal
94
dB
Headphone Output (LOUT1/2, ROUT1/2 with 16 or 32
Ω load)
Output Power per channel
PO
Output power is very closely correlated with THD; see below.
HPVDD=1.8V, RL=32Ω
PO=5mW
0.018
-75
HPVDD=1.8V, RL=16Ω
PO=5mW
0.025
-72
HPVDD=3.3V, RL=32Ω,
PO=20mW
0.013
-78
Total Harmonic Distortion
THD
HPVDD=3.3V, RL=16Ω,
PO=20mW
0.011
-79
0.03
-70
%
dB
HPVDD = 3.3V
92
96
Signal to Noise Ratio
(A-weighted)
SNR
HPVDD = 1.8V
(L/ROUT2 only)
89
95
dB



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