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WM8980 Datasheet(PDF) 6 Page - Wolfson Microelectronics plc

Part # WM8980
Description  STEREO CODEC WITH SPEAKER DRIVER AND BUFFER
PDF  81 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8980 Datasheet(HTML) 6 Page - Wolfson Microelectronics plc

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WM8980
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PP Rev 1.6 January 2005
6
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD=1.8V, AVDD=DBVDD=SPKVDD=VBVDD = 3.3V, TA = +25
oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless
otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Microphone Preamp Inputs (LIP, LIN, RIP, RIN, L2, R2)
Full-scale Input Signal Level –
note this changes with AVDD
(Note 1)
VINFS
PGABOOST = 0dB
INPPGAVOL = 0dB
1.0
0
Vrms
dBV
Mic PGA equivalent input noise
At 35.25dB
gain
TBD
uV
RMICIN
Gain set to 35.25dB
1.6
k
Ω
RMICIN
Gain set to 0dB
47
k
Ω
RMICIN
Gain set to -12dB
75
k
Ω
RMICIP
MICP2INPPGA = 1
94
k
Ω
RMICIP
MICP2INPPGA = 0
TBD
k
Ω
Input resistance
CMICIN
10
pF
Recommended coupling cap
CCOUP
220
pF
MIC Programmable Gain Amplifier (PGA)
Programmable Gain
-12
35.25
dB
Programmable Gain Step Size
Guaranteed monotonic
0.75
dB
Mute Attenuation
TBD
dB
Selectable Input Gain Boost (0/+20dB)
Boost disabled
0
dB
Gain Boost on PGA input
Boost enabled
20
dB
Gain range from AUXL/R or
L/R2 input to boost/mixer
-12
+6
dB
Gain step size to boost/mixer
3
dB
Auxilliary Analogue Inputs (AUXL, AUXR)
Full-scale Input Signal Level
(0dB) – note this changes with
AVDD
VINFS
AVDD/3.3
0
Vrms
dBV
RAUXINLMIN
Left Input boost and mixer
enabled, at max gain
4.3
k
Ω
RAUXINLTYP
Left Input boost and mixer
enabled, at 0dB gain
8.6
k
Ω
RAUXINLMAX
Left Input boost and mixer
enabled, at min gain
39.1
k
Ω
RAUXINRMIN
ight Input boost, mixer and
beep enabled, at max gain
3
k
Ω
RAUXINRTYP
ight Input boost, mixer and
beep enabled, at 0dB gain
6
k
Ω
Input Resistance
(Note 2)
RAUXINRMAX
ight Input boost, mixer and
beep enabled, at min gain
29
k
Ω
Input Capacitance
CMICIN
10
pF



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