WM8711BL Wolfson Microelectronics, WM8711BL Datasheet - Page 7

• Manufacturer Part Number: WM8711BL
• Description: Ultra-Small Audio DAC
• Manufacturer: Wolfson Microelectronics

Production Data
w
TERMINOLOGY
1.
2.
3.
4.
5.
6.
Test Conditions
AVDD, HPVDD, DBVDD = 1.8V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, T
unless otherwise stated.
PARAMETER
Stereo Headphone Output
0dB Full scale output voltage
Max Output Power
Signal to Noise Ratio
A-weighted (Note 1,2)
Total Harmonic Distortion
Power Supply Rejection Ratio
Programmable Gain
Programmable Gain Step Size
Mute attenuation
Signal-to-noise ratio (dB) - SNR is a measure of the difference in level between the full scale output and the output
with no signal applied. (No Auto-zero or Automute function is employed in achieving these results).
Dynamic range (dB) - DR is a measure of the difference between the highest and lowest portions of a signal. Normally
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).
THD+N (dB) - THD+N is a ratio, of the rms values, of (Noise + Distortion)/Signal.
Stop band attenuation (dB) - Is the degree to which the frequency spectrum is attenuated (outside audio band).
Channel Separation (dB) - Also known as Cross-Talk. This is a measure of the amount one channel is isolated from
the other. Normally measured by sending a full scale signal down one channel and measuring the other.
Pass-Band Ripple - Any variation of the frequency response in the pass-band region.
SYMBOL
PSRR
SNR
THD
P
O
AVDD=HPVDD=3.3V,
AVDD=HPVDD=1.8V,
AVDD=HPVDD=1.8V,
AVDD=HPVDD=3.3V,
AVDD=HPVDD=1.8V,
AVDD=HPVDD=3.3V
AVDD=HPVDD=1.8V
TEST CONDITIONS
@ P
@ P
1kHz, R
1kHz, R
1kHz 100mVpp
20Hz to 20kHz
O
1kHz, 0dB
O
100mVpp
R
R
R
= 4.5mW rms
= 14mW rms
L
L
L
1kHz
1kHz
= 32Ω
= 32Ω
= 16Ω
L
L
= 32Ω
= 32Ω
A
= +25
MIN
-73
80
o
C, Slave Mode, fs = 48kHz, MCLK = 256fs
AVDD/3.3
0.07
0.05
TYP
-63
-66
20
18
96
86
50
45
80
9
6
1
PD, Rev 4.1, April 2007
MAX
0.18
-55
6
WM8711BL
Vrms
UNIT
mW
dB
dB
dB
dB
dB
dB
%
7