WM8753L
Pre-Production
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.5V, AVDD = HPVDD = DBVDD = SPKRVDD = PLLVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio
data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Analogue Inputs (LINE1, LINE2, RXP, RXN)
Full-scale Input Signal Level VINFS
(0dB) – note this changes with
AVDD
1.0
Vrms
Input Capacitance
CLINE1/2,
RXP/N
10
pF
Microphone Preamp Inputs (MIC1, MIC1N, MIC2, MIC2N)
Full-scale Input Signal Level VINFS
(0dB) – note this changes with
AVDD
177
-12
mVrms
dBV
Mic preamp gain range
12
30
dB
uV
Mic preamp equivalent input At 30dB gain
noise
TBD
Input resistance
RMIC1N, RMIC2N
RMIC1N, RMIC2N
RMIC1N, RMIC2N
RMIC1N, RMIC2N
RMIC1, RMIC2
CDECOUP
Gain set to 30dB
Gain set to 24dB
Gain set to 18dB
Gain set to 12dB
5
10
kΩ
kΩ
kΩ
kΩ
kΩ
uF
pF
Input resistance
Input resistance
18
Input resistance
33
Input resistance
163
0.33
10
Recommended decoupling cap
Input Capacitance
CMICIN
Programmable Gain Amplifier (PGA)
Programmable Gain
-17.25
-28.5
30
-6
dB
dB
dB
Programmable Gain Step Size
Mute Attenuation
Guaranteed Monotonic
0.75
TBD
Automatic Level Control (ALC)
Target Record Level
dB
Gain Hold Time (Note 1)
tHOLD
0, 2.67, 5.33, 10.67, … , 43691
(time doubles with each step)
ms
MCLK = 12.288MHz
(Note 3)
Gain Ramp-Up (Decay) Time tDCY
(Note2)
24, 48, 96, … , 2458
(time doubles with each step)
ms
ms
Gain Ramp-Down (Attack) Time tATK
(Note 2)
6, 12, 24, … , 6140
(time doubles with each step)
LINE1/2 to Analogue to Digital Converter (ADC)
Signal to Noise Ratio (Note 4, 5)
A-weighted, 0dB gain
full-scale, 0dB gain
95
dB
dB
Total Harmonic Distortion
(Note 6)
-82
Channel Separation (Note 7)
1kHz input signal
90
dB
LINE1/2 to Voice Analogue to Digital Converter (ADC), fs = 8kHz
Signal to Noise Ratio (Note 4, 5)
A-weighted, 0dB gain
full-scale, 0dB gain
82
dB
dB
Total Harmonic Distortion
(Note 6)
-74
Channel Separation (Note 7)
1kHz input signal
90
dB
Digital to Analogue Converter (DAC) to Lineout (LOUT1/2, ROUT1/2, MONO1, MONO2,OUT3 with 10kΩ / 50pF load)
Signal to Noise Ratio
SNR
A-weighted
TBD
98
dB
(A-weighted)
Total Harmonic Distortion
(Note 6)
THD
RL = 10 kΩ
full-scale signal
-84
dB
PP Rev 3.4 November 2005
7
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
