WM8750L
ELECTRICAL CHARACTERISTICS
Product Preview
Test Conditions
o
DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, T
A
= +25 C, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio
data unless otherwise stated.
PARAMETER
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
Input Resistance
SYMBOL
V
INFS
TEST CONDITIONS
AVDD = 3.3V
AVDD = 1.8V
Selected for ADC,
PGA gain = 0dB
Selected for ADC,
PGA gain = +30dB
Selected for mixer
Input unused
Input Capacitance
Signal to Noise Ratio
(A-weighted)
Dynamic Range
Total Harmonic Distortion
THD
SNR
AVDD = 3.3V
AVDD = 1.8V
-60dBFs
-0.5dBFs input,
AVDD = 3.3V
-0.5dBFs input,
AVDD = 1.8V
ADC Channel Separation
Channel Matching
Programmable Gain Amplifier (PGA)
Programmable Gain
Programmable Gain Step Size
Channel Matching
Automatic Level Control (ALC)
Target Record Level
Gain Hold Time
Gain Ramp-Up (Decay) Time
Gain Ramp-Down (Attack) Time
t
HLD
MCLK = 12.288MHz
t
DCY
t
ATK
-28.5
-6
dBFS
ms
ms
ms
0, 2.67, 5.33, 10.67, … , 43691
(time doubles with each step)
24, 48, 96, … , 2458
(time doubles with each step)
6, 12, 24, … , 6140
(time doubles with each step)
AVDD=3.3V
AVDD=1.8V
THD
AVDD=3.3V
AVDD=1.8V
Channel Separation
Analogue Outputs (LOUT1/2, ROUT1/2, MONOOUT)
0dB Full scale output voltage
Programmable Gain
Programmable Gain Steps
Mute attenuation
Channel Separation
1kHz signal
Monotonic
1kHz, full scale signal
80
-67
80
85
90
AVDD/3.3
+6
Vrms
dB
steps
dB
dB
1kHz signal
TBD
98
95
-95
-90
90
dB
dB
Monotonic
1kHz signal, 0dB Fs input
-17.25
0.5
0.75
0.2
30
1.0
dB
dB
dB
1kHz signal
1kHz signal
90
90
12
1
MIN
TYP
1.0
0.545
20
1.5
TBD
TBD
10
95
90
95
-90
0.003
-84
0.006
85
0.2
-84
0.006
-74
0.02
dB
dB
dB
dB
%
pF
dB
kΩ
MAX
UNIT
V rms
Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3) to ADC out
DAC to Line-Out (L/ROUT2 with 10k
:
/ 50pF load)
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
SNR
dB
PP Rev 1.77 May 2003
6
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
