WM8959
Pre-Production
Test Conditions
DCVDD = 1.8V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, SPKVDD = 5V, TA = +25oC, 1kHz signal, fs = 48kHz,
PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
Multi-Path Channel Separation
G1
Headset Voice Call:
85
dB
DAC/Headset to Tx Voice
Separation
1kHz 0dBFS DAC playback to
LOUT and ROUT; Quiescent input
on LIN12 or RIN12 (Gain=+12dB),
differential output to LOP/LON or
ROP/RON; Measure crosstalk at
LOP/LON or ROP/RON output
G2
Headset Voice Call:
100
dB
DAC/Speaker to Tx Voice
Separation
1kHz 0dBFS DAC playback to
speaker, 1W output; Quiescent
input on LIN12 or RIN12
(Gain=+12dB), differential output
to LOP/LON or ROP/RON;
Measure crosstalk at LOP/LON or
ROP/RON output
G5
Ear Speaker Voice Call:
70
dB
Tx Voice and Rx Voice Separation
1kHz Full scale differential input
on RXP/RXN, output to
OUT3/OUT4; Quiescent input on
LIN12 or RIN12 (Gain=+12dB),
differential output to LOP/LON or
ROP/RON; Measure crosstalk at
LOP/LON or ROP/RON output
0dB
LON or
RON
G6
Headset Voice Call:
75
dB
Tx Voice and Rx Voice Separation
LIN12 or RIN12
(Single-ended or
differential mode)
+12dB
LOAD
LIN1 or
RIN1
LOPMIX or
ROPMIX
0dB
-
LIN2 or
RIN2
LOP or
ROP
+
1kHz full scale differential input on
RXP/RXN via RXVOICE to LOMIX
and ROMIX, output to LOUT and
ROUT; Quiescent input on LIN12
or RIN12 (Gain=+12dB),
differential output to LOP/LON or
ROP/RON; Measure crosstalk at
LOP/LON or ROP/RON output
Quiescent input
0dB
0dB
LOMIX
RXN
LOUT
+
-
+
Full scale
input
RXVOICE
ROUT
+
RXP
ROMIX
PP, May 2008, Rev 3.1
18
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
