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WM8734 Datasheet(PDF) 8 Page - Wolfson Microelectronics plc

Part # WM8734
Description  Stereo Audio CODEC
PDF  46 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8734 Datasheet(HTML) 8 Page - Wolfson Microelectronics plc

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WM8734
Production Data
w
PD Rev 4.1 November 2006
8
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD, DBVDD = 3.3V, AGND = 0V, DCVDD = 3.3V, DGND = 0V, TA = +25
oC, Slave Mode, fs = 48kHz, MCLK = 256fs unless
otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital Logic Levels (CMOS Levels)
Input LOW level
VIL
0.3 x DBVDD
V
Input HIGH level
VIH
0.7 x DBVDD
V
Output LOW
VOL
0.10 x
DBVDD
V
Output HIGH
VOH
0.9 x DBVDD
V
Power On Reset Threshold (DCVDD)
DCVDD Threshold On -> Off
Vth
0.9
V
Hysteresis
VIH
0.3
V
DCVDD Threshold Off -> On
VOL
0.6
V
Analogue Reference Levels
Reference voltage
VVMID
AVDD/2
V
Potential divider resistance
RVMID
50k
Ω
Line Input to ADC
Input Signal Level (0dB)
VINLINE
1.0
AVDD/3.3
Vrms
A-weighted, 0dB gain
@ fs = 48kHz
85
90
A-weighted, 0dB gain
@ fs = 96kHz
90
Signal to Noise Ratio
(Note 1,2,3)
SNR
A-weighted, 0dB gain
@ fs = 48kHz,
AVDD = 2.7V
88
dB
Dynamic Range (Note 3)
DNR
A-weighted, -60dB full
scale input
85
90
dB
Total Harmonic Distortion
THD
-1dB input, 0dB gain
-84
-74
dB
1kHz 100mVpp
50
Power Supply Rejection Ratio
PSSR
20Hz to 20kHz
100mVpp
45
dB
ADC channel separation
1kHz input
90
dB
Programmable Gain
1kHz input
Rsource < 50
Ω
-34.5
0
+12
dB
Programmable Gain Step Size
Guaranteed Monotonic
1.5
dB
Mute attenuation
0dB, 1kHz input
80
dB
0dB gain
20k
30k
Input Resistance
RINLINE
12dB gain
10k
15k
Ω
Input Capacitance
CINLINE
10
pF



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