WM8776 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
부품명
상세내역
일치하는 목록
WM8776 Datasheet PDF : 57 Pages
| |||
WM8776
Production Data
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, TA = +25oC, fs = 48kHz, MCLK = 256fs unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital Logic Levels (TTL Levels)
Input LOW level
VIL
0.8
V
Input HIGH level
VIH
2.0
V
Output LOW
VOL
IOL=1mA
0.1 x DVDD
V
Output HIGH
VOH
IOH=1mA
0.9 x DVDD
V
Analogue Reference Levels
Reference voltage
VVMID
Potential divider resistance
RVMID
DAC Performance (Load = 10k Ω, 50pF)
AVDD/2
V
50k
Ω
0dBFs Full scale output voltage
1.0 x
Vrms
AVDD/5
SNR (Note 1,2)
A-weighted,
102
108
dB
@ fs = 48kHz
SNR (Note 1,2)
A-weighted
108
dB
@ fs = 96kHz
Dynamic Range (Note 2)
DNR
A-weighted, -60dB
108
dB
full scale input
Total Harmonic Distortion (THD)
1kHz, 0dBFs
-97
-90
dB
DAC channel separation
100
dB
Power Supply Rejection Ratio
PSRR
1kHz 100mVpp
50
dB
20Hz to 20kHz
45
dB
100mVpp
Headphone Buffer
Maximum Output voltage
0.9
Vrms
Max Output Power (Note 4)
Po
RL = 32 Ω
RL = 16 Ω
25
mW
50
mW
SNR (Note 1,2)
A-weighted
85
92
dB
Headphone analogue Volume
Gain Step Size
0.5
1
1.5
dB
Headphone analogue Volume
Gain Range
1kHz Input
-73
+6
dB
Headphone analogue Volume
1kHz Input, 0dB gain
100
dB
Mute Attenuation
Total Harmonic Distortion
THD
1kHz, RL = 32Ω @ Po =
10mW rms
1kHz, RL = 32Ω @ Po =
20mW rms
-80
-60
dB
0.01
0.1
%
-77
-55
dB
0.014
1.0
%
Power Supply Rejection Ratio
PSRR
20Hz to 20kHz, without
-40
dB
supply decoupling
ADC Performance
Input Signal Level (0dB)
1.0 x
Vrms
AVDD/5
SNR (Note 1,2)
A-weighted, 0dB gain
97
102
dB
@ fs = 48kHz
SNR (Note 1,2)
A-weighted, 0dB gain
100
dB
@ fs = 96kHz
64 x OSR
Dynamic Range (note 2)
A-weighted, -60dB
102
dB
full scale input
Total Harmonic Distortion (THD)
1kHz, 0dBFs
-92
dB
w
PD Rev 4.0 April 2005
6
Share Link: 