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WM8993 Schematic ( PDF Datasheet ) - Wolfson Microelectronics

Teilenummer WM8993
Beschreibung Audio Hub CODEC
Hersteller Wolfson Microelectronics
Logo Wolfson Microelectronics Logo 




Gesamt 30 Seiten
WM8993 Datasheet, Funktion
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WM8993
Audio Hub CODEC for Multimedia Phones
DESCRIPTION
FEATURES
The WM8993 is a highly integrated ultra-low power hi-fi CODEC
designed for portable devices such as multimedia phones.
A stereo 1W/channel speaker driver can operate in class D or
AB mode. Low leakage and high PSRR across the audio band
enable direct battery connection for the speaker supply.
Class W headphone drivers provide a dramatic reduction in
playback power and are ground-referenced. Active ground loop
noise rejection and DC offset correction help prevent pop noise
and ground noise from degrading headphone output quality.
Powerful mixing capability allows the device to support a huge
range of architectures and use cases. A highly flexible input
configuration supports multiple microphone or line inputs (mono
or stereo, single-ended or differential).
Fully differential internal architecture and on-chip RF noise
filters ensure a very high degree of noise immunity.
ReTuneTM Mobile parametric EQ with fully programmable
coefficients is integrated for optimization of speaker
characteristics. Programmable dynamic range control is also
available for maximizing loudness, protecting speakers from
clipping and preventing premature shutdown due to battery
droop.
The WM8993 is supplied in very small and thin 48-ball W-CSP
package, ideal for portable systems.
100dB SNR during DAC playback (‘A’ weighted)
Low power, low noise MIC interface
Class D or AB stereo speaker driver
- Stereo1W into 8Ω BTL speaker at <1% THD
- Mono 2W into 4Ω BTL speaker
ReTuneTM Mobile parametric equalizer
Dynamic range controller
Low power Class W headphone drivers
- Integrated charge pump and DC offset correction
- 5mW total power for DAC playback to headphones
Digital audio interface
- All standard data formats and 2-channel TDM supported
- All standard sample rates from 8kHz to 48kHz
Low power FLL
- Provides all necessary internal clocks
- 32kHz to 27MHz input frequency
- Free-running mode for class D and charge pump
4 highly flexible line outputs (single-ended or differential )
Dedicated earpiece driver
“Direct voice” and “Direct DAC” paths to outputs
- Low noise paths bypass all internal mixers
- Low power consumption
Active noise reduction
- DC offset correction removes pops and clicks
- Ground loop noise cancellation
48-ball W-CSP package (3.64x3.54x0.7mm, 0.5mm pitch)
APPLICATIONS
Multimedia phones
WOLFSON MICROELECTRONICS plc
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Production Data, November 2010, Rev 4.0
Copyright ©2010 Wolfson Microelectronics plc






WM8993 Datasheet, Funktion
WM8993
PIN CONFIGURATION
Production Data
1 2 34 5 6 7
A
SPK
OUTLP
LINE
OUT2P
LINE
OUT2N
LINE
OUTFB
MIC
BIAS1
IN2RN
/GI8
IN2RP
/VRXP
B
SPK
OUTLN
SPK
OUTRN
LINE
OUT1P
LINE
OUT1N
MIC
BIAS2
IN2LN
/GI7
IN2LP
/VRXN
C
SPK
OUTRP
SPKVDD
IN1RN
IN1RP
IN1LN
VMIDC
AVDD2
D
SPKGND
DGND
GPIO1
IN1LP
HP
OUT2P
AGND
E
DBVDD
DCVDD
SPK
MONO
ADCDAT
DACDAT
AVDD1
HP
OUT2N
F
SCLK
MCLK
SDAT
HP
OUT1R
CP
VOUTP
CPFB1
CPVDD
G LRCLK
BCLK
HP
OUT1L
HP
OUT1FB
CP
VOUTN
CPFB2
CPGND
TOP VIEW
ORDERING INFORMATION
ORDER CODE TEMPERATURE RANGE
PACKAGE
WM8993ECS/RV
Note:
Reel quantity = 3500
-40°C to +85°C
48-ball W-CSP
(Pb-free, Tape and reel)
MOISTURE
SENSITIVITY LEVEL
MSL1
PEAK SOLDERING
TEMPERATURE
260°C
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PD, November 2010, Rev 4.0
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WM8993 pdf, datenblatt
WM8993
Production Data
Test Conditions
DCVDD = 1.2V, AVDD2 = DBVDD = CPVDD = 1.8V, AVDD1 = 3.0V, SPKVDD = 5V, DGND=AGND=CPGND=SPKGND=0V,
TA = +25oC, 1kHz sinusoidal signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
Analogue Input Pin Impedances (IN1LN, IN1LP, IN2LN, IN2LP, IN1RN, IN1RP, IN2RN, IN2RP)
B1 PGA Input Resistance
Differential Mode
PGA Gain = -16.5dB
PGA Gain = 0dB
TYP
52.5
25.1
MAX
UNIT
kΩ
kΩ
Note 4
PGA Gain = +30dB
1.3 kΩ
See “Applications
Information” for details
of Input resistance at all
PGA Gain settings.
B2 PGA Input Resistance
Single-Ended Mode
Note 4
PGA Gain = -16.5dB
PGA Gain = 0dB
PGA Gain = +30dB
58.0 kΩ
36.2 kΩ
2.5 kΩ
See “Applications
Information” for details
of Input resistance at all
PGA Gain settings.
B3 Line Input Resistance
IN1LP or IN1RP to INMIXL
or INMIXR (-12dB)
Note 4
IN1LP or IN1RP to INMIXL
or INMIXR (0dB)
IN1LP or IN1RP to INMIXL
or INMIXR (+6dB)
IN1LP to SPKMIXL or
IN1RP to SPKMIXR
(SPKATTN = -12dB)
IN1LP to SPKMIXL or
IN1RP to SPKMIXR
(SPKATTN = 0dB)
IN2LN, IN2RN, IN2LP or
IN2RP to MIXOUTL or
MIXOUTR
(-21dB)
IN2LN, IN2RN, IN2LP or
IN2RP to MIXOUTL or
MIXOUTR
(0dB)
VRXP-VRXN via RXVOICE
to MIXINL or MIXINR
(Gain = -12dB)
VRXP-VRXN via RXVOICE
to MIXINL or MIXINR
(Gain = 0dB)
VRXP-VRXN via RXVOICE
to MIXINL or MIXINR
(Gain = +6dB)
56.0
17.4
9.8
88.5
26.7
150.9
18.2
47.7
12.0
6.0
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
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PD, November 2010, Rev 4.0
12

12 Page





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