WM8569 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
부품명
상세내역
일치하는 목록
WM8569 Datasheet PDF : 36 Pages
| |||
Production Data
WM8569
Test Conditions
AVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, DGND = 0V, TA = +25oC, fs = 48kHz, MCLK = 256fs.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
Mute Attenuation
1kHz Input, 0dB gain
90
Power Supply Rejection Ratio
PSRR
1kHz 100mVpp
50
20Hz to 20kHz
45
100mVpp
Digital Logic Levels (CMOS Levels)
Input LOW level
VIL
0.3 x DVDD
Input HIGH level
VIH
0.7 x DVDD
Input leakage current
±0.2
±1
Input capacitance
5
Output LOW
VOL
IOL=1mA
0.1 x DVDD
Output HIGH
VOH
IOH= -1mA
0.9 x DVDD
Analogue Reference Levels
Reference voltage
VVMID
VREFP/2 – VREFP/2 VREFP/2 +
50mV
50mV
Potential divider resistance
RVMID
VREFP to VMID and
50
VMID to VREFN
Supply Current
Analogue supply current
AVDD, VREFP = 5V
TBD
Digital supply current
DVDD = 3.3V
TBD
UNIT
dB
dB
dB
V
V
µA
pF
V
V
V
kΩ
mA
mA
Notes:
1. Ratio of output level with 1kHz full scale input, to the output level with all zeros into the digital input, measured ‘A’
weighted.
2. All performance measurements done with 20kHz low pass filter, and where noted an A-weight filter. Failure to use
such a filter will result in higher THD+N and lower SNR and Dynamic Range readings than are found in the Electrical
Characteristics. The low pass filter removes out of band noise; although it is not audible it may affect dynamic
specification values.
3. VMID decoupled with 10uF and 0.1uF capacitors (smaller values may result in reduced performance).
TERMINOLOGY
1. 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).
2. Dynamic range (dB) - DNR 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).
3. THD (dB) - THD is a ratio, of the rms values, of Distortion/Signal.
4. Stop band attenuation (dB) - Is the degree to which the frequency spectrum is attenuated (outside audio band).
5. 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.
6. Pass-Band Ripple - Any variation of the frequency response in the pass-band region.
w
PD Rev 4.0 June 2006
7
Share Link: 