wm8750 Wolfson Microelectronics plc, wm8750 Datasheet - Page 7

• Manufacturer Part Number: wm8750
• Description: Stereo Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

Production Data
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ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, T
data unless otherwise stated.
PARAMETER
Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3) to ADC out
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
Input Resistance
Input Capacitance
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
ADC Channel Separation
Channel Matching
Analogue Outputs (LOUT1/2, ROUT1/2, MONOOUT)
0dB Full scale output voltage
Mute attenuation
Channel Separation
DAC to Line-Out (L/ROUT2 with 10kΩ / 50pF load)
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
Channel Separation
Headphone Output (LOUT1/ROUT1, using capacitors)
Output Power per channel
Total Harmonic Distortion
Signal to Noise Ratio
(A-weighted)
SYMBOL
V
SNR
SNR
SNR
THD
THD
THD
P
INFS
O
HPVDD=3.3V, R
HPVDD=3.3V, R
HPVDD=1.8V, R
HPVDD=1.8V, R
1kHz, full scale signal
L/RINPUT1 to ADC,
L/RINPUT1 to ADC,
TEST CONDITIONS
L/RINPUT1 unused
L/RINPUT1 unused
PGA gain = +30dB
DC Measurement
PGA gain = 0dB
MONOOUT pin
to analogue out
HPVDD = 3.3V
HPVDD = 1.8V
AVDD = 3.3V
AVDD = 1.8V
AVDD = 3.3V
AVDD = 1.8V
-1dBFs input,
AVDD = 3.3V
-1dBFs input,
AVDD = 1.8V
AVDD=3.3V
AVDD=1.8V
AVDD=3.3V
AVDD=1.8V
1kHz signal
1kHz signal
analogue in
1kHz signal
P
P
P
P
O
O
O
O
=20mW
=20mW
Output power is very closely correlated with THD; see below.
=5mW
=5mW
A
= +25
L
L
L
L
=32Ω,
=16Ω,
=32Ω
=16Ω
o
C, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio
MIN
80
90
92
AVDD/3.3
0.545
0.008
0.016
0.022
0.013
0.018
0.02
TYP
100
1.0
1.5
-82
-74
0.2
-84
-80
-76
-73
-78
-75
22
16
17
10
95
90
85
90
81
85
98
93
96
96
PD Rev 4.3 October 2006
MAX
WM8750L
V rms
Vrms
UNIT
kΩ
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
%
%
7