wm9705seft-v Wolfson Microelectronics plc, wm9705seft-v Datasheet - Page 8

• Manufacturer Part Number: wm9705seft-v
• Description: Multimedia Ac?97 Codec With Integrated Touch Screen Controller
• Manufacturer: Wolfson Microelectronics plc

WM9705
w
Test Characteristics:
AVDD = 3.3V, DVDD = 3.3V, 48kHz audio sampling, T
PARAMETER
Digital Logic Levels (DVDD = 3.3V)
Input LOW level
Input HIGH level
Output LOW
Output HIGH
Analogue Audio I/O Levels (Input Signals on any audio inputs, Outputs on LINEOUT L, R and MONO and HPOUT L,R)
Input level
Output level to LINEOUT L,R
Output level to HPOUT L,
HPOUTR and MONOOUT
Reference Levels
Reference input/output
CAP2 impedance
Mixer reference
MIC reference
MIDBUFF current source
(pins VREF and VREFOUT)
MIDBUFF current sink
(pins VREF and VREFOUT)
AUDIO DAC to Line-out (10kΩ load)
SNR A-weighted (Note 2)
Full scale output voltage
Total Harmonic Distortion +
Noise
PSRR
AUDIO ADC
ADC input for full scale output
Signal to Noise Ratio
A-weighted (Note 2)
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Digital Filter Characteristics
Frequency response
Transition band
Stop band
Stop band attenuation
Electrical characteristics
VREFOUT
SYMBOL
THD+N
THD+N
PSRR
CAP2
VREF
SNR
V
V
V
V
OH
OL
IH
IL
20 to 20kHz, without
20 to 20kHz, without
TEST CONDITIONS
supply decoupling
supply decoupling
impedance = 10k
A
Minimum input
Into 10kΩ load
I Load = -2mA
VREF = 1.65V
VREF = 1.65V
I Load = 2mA
Into 16Ω load
AVDD = 3.3V
AVDD = 3.3V
-3dBfs input
-6dBfs input
= 25
ADC
DAC
o
C, unless otherwise stated.
0.90 x DVDD
DGND - 0.3
0.47 AVDD
+300mV
+300mV
-100mV
19,200
28,800
AGND
AGND
AGND
MIN
2.2
-74
-40
85
80
20
-5
5
0.50 AVDD
Near rail to
Near rail to
Buffered
Buffered
CAP2
CAP2
0.006
TYP
rail
rail
-10
0.7
-84
-40
0.7
-79
-40
75
10
91
86
0.10 x DVDD
DVDD + 0.3
0.53 AVDD
+100mV
-300mV
-300mV
19,200
28,800
AVDD
AVDD
AVDD
MAX
0.02
-74
-72
0.8
PD Rev 4.5 July 2008
Production Data
Vrms
Vrms
UNIT
dBfs
mA
mA
kΩ
dB
dB
dB
dB
dB
Hz
Hz
Hz
dB
%
V
V
V
V
V
V
V
V
V
V
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