wm8988 Wolfson Microelectronics plc, wm8988 Datasheet - Page 8

• Manufacturer Part Number: wm8988
• Description: Stereo Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

WM8988
w
Test Conditions
DCVDD = 1.5V, DBVDD = 2.4V, AVDD = HPVDD =2.4V , T
data unless otherwise stated.
PARAMETER
Total Harmonic Distortion +
Noise
Signal to Noise Ratio
(A-weighted)
Headphone Output Ground
noise rejection
Line Output Ground Noise
Rejection
Analogue Reference Levels
Midrail Reference Voltage
Buffered Reference Voltage
Digital Input / Output
Input HIGH Level
Input LOW Level
SYMBOL
THD+N
VREF
VMID
SNR
V
V
IH
IL
10mV, 20kHz noise on HPCOM,
10mV, 20kHz noise on LCOM,
TEST CONDITIONS
HPVDD=3.3V, R
HPVDD=3.3V, R
HPVDD=2.4V, R
HPVDD=2.4V, R
HPVDD=3.3V, R
HPVDD=3.3V, R
HPVDD=1.8V, R
HPVDD=1.8V, R
HPCOM=LCOM=0
HPCOM=LCOM=0
HPCOM=LCOM=0
HPCOM=LCOM=0
HPCOM=LCOM=1
HPCOM=LCOM=1
HPCOM=LCOM=0
HPCOM=LCOM=0
HPCOM=LCOM=0
HPCOM=LCOM=1
HPCOM=LCOM=0
HPCOM enabled
DACMIXBIAS=0
DACMIXBIAS=0
DACMIXBIAS=1
DACMIXBIAS=1
DACMIXBIAS=1
DACMIXBIAS=1
DACMIXBIAS=0
DACMIXBIAS=0
DACMIXBIAS=1
DACMIXBIAS=1
DACMIXBIAS=0
HPVDD = 3.3V
HPVDD = 2.4V
HPVDD = 1.8V
LCOM enabled
P
P
P
P
P
P
P
P
O
O
O
O
O
O
O
O
A
=20mW
=20mW
=20mW
=20mW
=5mW
=5mW
=5mW
=5mW
= +25
L
L
L
L
L
L
o
L
L
=32Ω,
=16Ω,
=32Ω,
=16Ω,
=32Ω,
=16Ω,
C, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio
=32Ω
=16Ω
0.7×DB
VDD
–3%
–3%
MIN
90
AVDD/2
AVDD/2
0.010
0.010
TYP
100
-82
-80
-80
-78
-79
-77
-80
-78
96
96
40
40
PD, Rev 4.0, October 2008
0.3×DBVDD
+3%
+3%
MAX
-65
Production Data
UNIT
dB
dB
dB
dB
V
V
V
V
8