WM8753LEB/RV WOLFSON [Wolfson Microelectronics plc], WM8753LEB/RV Datasheet - Page 9
![no-image](/images/no-image-200.jpg)
WM8753LEB/RV
Manufacturer Part Number
WM8753LEB/RV
Description
HI FI AND TELEPHONY DUAL CODEC
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM8753LEBRV.pdf
(87 pages)
- Current page: 9 of 87
- Download datasheet (2Mb)
WM8753L
TERMINOLOGY
1.
2.
3.
4.
5.
6.
7.
w
Test Conditions
DCVDD = 1.5V, AVDD = HPVDD = DBVDD = SPKRVDD = PLLVDD = 3.3V, T
data unless otherwise stated.
PARAMETER
Microphone Bias
Bias Voltage (MBVSEL=0)
Bias Voltage (MBVSEL=1)
Bias Current Source
Output Noise Voltage
Digital Input / Output (excluding GPIO4)
Input HIGH Level
Input LOW Level
Output HIGH Level
Output LOW Level
GPIO4 Input
Input HIGH Level
Input LOW Level
not apply to ramping down the gain when the signal is too loud, which happens without a delay.
with no signal applied. (No Auto-zero or Automute function is employed in achieving these results).
a THD+N measurement at 60dB below full scale. The measured signal is then corrected by adding the 60dB to it. (e.g.
THD+N @ -60dB= -32dB, DR= 92dB).
the other. Normally measured by sending a full scale signal down one channel and measuring the other.
Hold Time is the length of time between a signal detected being too quiet and beginning to ramp up the gain. It does
Ramp-up and Ramp-Down times are defined as the time it takes for the PGA to sweep across 90% of its gain range.
All hold, ramp-up and ramp-down times scale proportionally with MCLK
Signal-to-noise ratio (dB) - SNR is a measure of the difference in level between the full scale output and the output
Dynamic range (dB) - DR is a measure of the difference between the highest and lowest portions of a signal. Normally
THD+N (dB) - THD+N is a ratio, of the rms values, of (Noise + Distortion)/Signal.
Channel Separation (dB) - Also known as Cross-Talk. This is a measure of the amount one channel is isolated from
SYMBOL
V
V
I
V
V
V
V
MICBIAS
V
V
MICBIAS
MICBIAS
OH
OL
Vn
IH
IH
IL
IL
TEST CONDITIONS
1K to 20kHz
I
I
OL
OH
=1mA
-1mA
0.7 DBVDD
0.9 DBVDD
-3%
-3%
1.4
MIN
A
= +25
o
0.75*AVDD
C, 1kHz signal, fs = 48kHz, 24-bit audio
0.9*AVDD
15
TYP
0.3 DBVDD
0.1 DBVDD
+3*%
+3*%
0.8
MAX
AI Rev 3.1 June 2004
Advanced Information
3
nV/ Hz
mA
UNIT
V
V
V
V
V
V
V
V
9
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