WM9707 Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM9707 Datasheet PDF : 30 Pages
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Advanced Information
WM9707
Test Characteristics:
AVSS = 5V, GND = 0V …………..TA = 0oC to +70oC, unless otherwise stated
DVDD = 3.3V, GND = 0V …………..TA = 0oC to +70oC, unless otherwise stated
PARAMETER
SYMBOL TEST CONDITIONS
ADC Circuit Specifications (AVDD = 3.3V) 48kHz sampling
SNR A-weighted (Note 1)
ADC input for full scale output
VREF = 1.65V
THD
-6dBv input
Frequency response
Transition band
Stop band
Stop band rejection
PSRR
20 to 20kHz
Mixer Circuit Specifications (AVDD = 3.3V) 48kHz sampling
SNR CD path A-weighted
(Note 1)
SNR Other paths A-weighted
(Note 1)
Maximum input voltage
Maximum output voltage on
LINEOUT
THD (Note 2)
-3.6dBv input
Frequency response (+/-1dB)
Input impedance (CD inputs)
At any gain
Input impedance (other Mixer
inputs)
At max gain
At 0db gain
Input impedance MIC inputs
At max gain
At 0db gain
PSRR
20 to 20kHz
Clock Frequency Range
Crystal clock
BIT_CLK frequency
SYNC frequency
MIN
20
19,200
28,800
-74
20
TYP
85
0.7
80
40
95
90
0.6
1.2
85
15
20
100
30
110
50
24.576
12.288
48.0
MAX
19,200
28,800
20,000
UNIT
dB
Vrms
dB
Hz
Hz
Hz
dB
dB
dB
dB
Vrms
Vrms
dBv
Hz
kohm
kohm
kohm
kohm
kohm
dB
MHz
MHz
kHz
Notes:
1. SNR is the ratio of 0dB signal output to the output level with no signal, measured A-weighted over a 20Hz to 20kHz
bandwidth.
2. Inputs are scaled for AVDD eg; 0dBv at 5.0V is equivalent to –3.6dBv at 3.3V.
WOLFSON MICROELECTRONICS LTD
AI Rev 2.2 January 2001
5
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