wm9708 Wolfson Microelectronics plc, wm9708 Datasheet - Page 6

• Manufacturer Part Number: wm9708
• Description: Ac?97 Revision 2.1 Audio Codec
• Manufacturer: Wolfson Microelectronics plc

WM9708
ELECTRICAL CHARACTERISTICS
w
Test Characteristics:
AVDD = 5V, GND = 0V …………..T
DVDD = 3.3V, GND = 0V …………..T
PARAMETER
Digital Logic Levels (DVDD = 3.3 or 5.0V)
Input LOW level
Input HIGH level
Output LOW
Output HIGH
Analogue I/O Levels (Input Signals on any inputs, Outputs on LINEOUT L, R and MONOOUT)
Input level
Output level
Reference Levels
Reference input/output
CAP2 impedance
Mixer reference
MIC reference
MIDBUFF current sink
(pins VREF and VREFOUT)
MIDBUFF current source
(pins VREF and VREFOUT)
MIDBUFF current source
(pins VREF and VREFOUT)
MIDBUFF current sink
(pins VREF and VREFOUT)
DAC Circuit Specifications (AVDD = 5V) 48kHz sampling
SNR A-weighted (Note 1)
Full scale output voltage
THD
Frequency response
Transition band
Stop band
Out of band rejection
Spurious tone reduction
PSRR
ADC Circuit Specifications (AVDD = 5V) 48kHz sampling
SNR A-weighted (Note 1)
ADC input for full scale output
THD
Frequency response
Transition band
Stop band
Stop band rejection
PSRR
A
= 25
A
VREFOUT
SYMBOL
= 25
CAP2
VREF
V
V
o
V
V
C, unless otherwise stated
OH
OL
IH
IL
o
C, unless otherwise stated
TEST CONDITIONS
impedance = 10k
Minimum input
Into 10kΩ load
AVDD = 3.3V
AVDD = 3.3V
VREF = 2.5V
VREF = 2.5V
-3dBfs input
20 to 20kHz
20 to 20kHz
AVDD = 5V
AVDD = 5V
-6dBv input
0.90 x VDD
AGND -0.3
74 (0.02%)
2/5 AVDD
+300mV
-100mV
19,200
28,800
19,200
28,800
AGND
AGND
2.2
-74
85
20
75
74
20
MIN
-5
5
Near rail to
Buffered
Buffered
AVDD/2
CAP2
CAP2
-100
rail
-15
-10
1.0
-40
1.0
75
15
10
95
90
40
92
95
40
TYP
0.10 x VDD
AVDD +0.3
PD, Rev 4.2, August 2009
AVDD
+100mV
3/5 AVDD
-300mV
19,200
28,800
19,200
28,800
AVDD
0.8
MAX
Production Data
Vrms
Vrms
dBv
dBv
mA
mA
mA
mA
UNIT
kΩ
Hz
Hz
Hz
dB
dB
dB
dB
dB
Hz
Hz
Hz
dB
dB
V
V
V
V
V
V
V
V
V
6