WM8956 데이터 시트보기 (PDF) - Cirrus Logic
부품명
상세내역
제조사
WM8956 Datasheet PDF : 80 Pages
| |||
WM8956
Production Data
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.8V, DBVDD = 3.3V, AVDD = SPKVDD1 = SPKVDD2 = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB,
24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, LINPUT3, RINPUT2, RINPUT3)
Full-scale Input Signal Level –
note this changes in proportion
to AVDD
VINFS
L/RINPUT1,2,3
Single-ended
L/RINPUT1,2,3
Differential MIC
Mic PGA equivalent input noise
0 to 20kHz,
+30dB gain
Input resistance
(Note that input boost and
bypass path resistances will be
seen in parallel with PGA input
resistance when these paths are
enabled)
L/RINPUT1
L/RINPUT1
+30dB PGA gain
Differential or single-
ended MIC configuration
0dB PGA gain
Differential or single-
ended MIC configuration
L/RINPUT1
-17.25dB PGA gain
Differential or single-
ended MIC configuration
L/RINPUT2,
L/RINPUT3
(Constant for all gains)
Differential MIC
configuration
L/RINPUT2,
L/RINPUT3
Max boost gain
L/RINPUT2/3 to boost
L/RINPUT2,
L/RINPUT3
0dB boost gain
L/RINPUT2/3 to boost
L/RINPUT2,
L/RINPUT3
Min boost gain
L/RINPUT2/3 to boost
L/RINPUT3
Max bypass gain
L/RINPUT3 to bypass
L/RINPUT3
Min bypass gain
L/RINPUT3 to bypass
Input capacitance
MIC Programmable Gain Amplifier (PGA)
Programmable Gain Min
Programmable Gain Max
Programmable Gain Step Size
Guaranteed monotonic
Mute Attenuation
LMIC2B = 0 and
RMIC2B = 0
Selectable Input Gain Boost
Gain Boost Steps
Input from PGA
Input from L/RINPUT2 or
L/RINPUT3
Headphone Outputs (HP_L, HP_R)
0dB Full scale output voltage
Mute attenuation
Channel Separation
1kHz, full scale signal
L/RINPUT3 to headphone
outputs via bypass
TYP
1.0
0
0.5
-6
150
3
49
87
85
7.5
13
37
17
70
10
-17.25
30
0.75
85
0, 13, 20,
29, MUTE
-12, -9, -6,
-3, 0, 3, 6,
MUTE
AVDD/3.3
86
110
MAX
UNIT
Vrms
dBV
Vrms
dBV
uV
k
k
k
k
k
k
k
k
k
pF
dB
dB
dB
dB
dB
dB
Vrms
dB
dB
w
PD, November 2011, Rev 4.1
6
Share Link: 