WM8751L View Datasheet(PDF) - Wolfson Microelectronics plc
Part Name
Description
Manufacturer
WM8751L Datasheet PDF : 45 Pages
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WM8751L
Production Data
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.5V, AVDD = HPVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC to Line-Out (L/ROUT1 with 10kΩ / 50pF load)
Signal to Noise Ratio
SNR
AVDD = 3.3V
98
dB
(A-weighted)
AVDD = 1.8V
95
Total Harmonic Distortion
THD
AVDD = 3.3V
-86
dB
AVDD = 1.8V
-82
Channel Separation
1kHz signal
100
dB
Analogue Mixer Inputs (LINEINL/R to L/ROUT1 with 10kΩ / 50pF load)
Full-scale Input Signal Level
VINFS
AVDD = 3.3V
1.0
Vrms
AVDD = other
AVDD/3.3
Signal to Noise Ratio
SNR
AVDD = 3.3V
98
dB
Line-in to Line-Out
AVDD = 1.8V
95
(A-weighted)
Total Harmonic Distortion
THD
AVDD = 3.3V
-94
dB
AVDD = 1.8V
-90
dB
Input Resistance
RLINEIN
PGA gain = 0dB
20.5
kΩ
(signal enters one mixer only)
PGA gain = +6dB
10.5
Input Resistance
PGA gain = 0dB
10.25
(signal enters two mixers)
PGA gain = +6dB
5.25
MONOIN- input resistance
RMONOIN-
any gain
20
kΩ
Common mode rejection ratio CMRR MONOIN+ / MONOIN- to
-38
dB
L/ROUT1, 20Hz–20kHz
Mute Attenuation
-91
dB
Analogue Outputs (LOUT1/2, ROUT1/2, MONOOUT)
0dB Full scale output voltage
AVDD/3.3
Vrms
Mute attenuation
1kHz, full scale signal
-94
dB
Channel Separation
-91
dB
Headphone Output (LOUT1/2, ROUT1/2 with 16 or 32Ω load)
Output Power per channel
PO
Output power is very closely correlated with THD; see below.
Total Harmonic Distortion
THD
HPVDD=1.8V, RL=32Ω
0.018
dB
PO=5mW
-75
%
HPVDD=1.8V, RL=16Ω
PO=5mW
0.025
-72
HPVDD=3.3V, RL=32Ω,
PO=20mW
0.013
-78
HPVDD=3.3V, RL=16Ω,
PO=20mW
0.011
-79
Signal to Noise Ratio
SNR
HPVDD = 3.3V
92
96
dB
(A-weighted)
HPVDD = 1.8V
95
Speaker Output (LOUT2/ROUT2 with 8Ω bridge tied load, ROUT2INV=1)
Output Power at 1% THD
PO
THD = 1%
330
mW (rms)
Abs. Max Power Ouptut
POmax
500
mW (rms)
Total Harmonic Distortion
THD
Po=200mW, RL=8Ω,
-63
dB
HPVDD=3.3V
0.07
%
Signal to Noise Ratio
SNR
HPVDD=3.3V, RL=8Ω
95
dB
(A-weighted)
Analogue Reference Levels
Midrail Reference Voltage
VMID
–3%
AVDD/2
+3%
V
Buffered Reference Voltage
VREF
–3%
AVDD/2
+3%
V
w
PD Rev 4.2 August 2006
6
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