wm9704m Wolfson Microelectronics plc, wm9704m Datasheet - Page 5

• Manufacturer Part Number: wm9704m
• Description: Amc97 Audio Modem Codec
• Manufacturer: Wolfson Microelectronics plc

Production Data
WOLFSON MICROELECTRONICS LTD
Test Characteristics:
AVDD = 5V, GND = 0V …………..T
DVDD = 3.3V, GND = 0V …………..T
PARAMETER
ADC Circuit Specifications (AVDD = 3.3V) 48kHz sampling
SNR A-weighted (Note 1)
ADC input for full scale output
THD
Frequency response
Transition band
Stop band
Stop band rejection
PSRR
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
Frequency response (+/-1dB)
Input impedance (CD inputs)
Input impedance (other Mixer
inputs)
Input impedance MIC inputs
PSRR
Clock Frequency Range
Crystal clock
BIT_CLK frequency
SYNC frequency
Note:
1. SNR is the ratio of 0dB signal amplitude to noise floor with no signal, measured A-weighted over a 20Hz to 20kHz
bandwidth.
A
= 0
A
SYMBOL
= 0
o
C to +70
o
C to +70
o
C, unless otherwise stated
o
TEST CONDITIONS
C, unless otherwise stated
-9dBFS input
V
20 to 20kHz
20 to 20kHz
-3dBV input
At max gain
At max gain
At 0db gain
At 0db gain
At any gain
REF
= 1.65V
19,200
28,800
MIN
-74
20
20
24.576
12.288
48.0
TYP
100
0.7
0.7
0.7
82
80
40
97
92
90
15
20
80
15
40
19,200
28,800
20,000
MAX
PD Rev 3.2 January 2001
WM9704M
kohm
kohm
kohm
kohm
kohm
Vrms
Vrms
Vrms
UNIT
MHz
MHz
kHz
dB
Hz
Hz
Hz
dB
dB
dB
dB
Hz
dB
%
%
5