MAS9090B Datasheet, PDF (1/30 Pages) Micronas – LOW VOLTAGE 14-BIT LINEAR CODEC

DA9090B.001
January 14, 1998
MAS9090B
LOW VOLTAGE 14-BIT LINEAR CODEC
• 14-bit linear analog to digital and digital to analog converters
• 8-bit A-law or µ-law companded analog to digital and digital to
analog converters
DESCRIPTION
The MAS9090 is a high performance low power PCM CODEC and filter device tailored to implement the audio
front-end functions required by the low voltage/low power consumption digital terminals.
FEATURES
• Single 2.7-3.6 V or 4.5-5.5 V supply selectable
• -30°C to 85°C temperature operation range
• 11 mW operating power (typ. at 2.7V)
• 15 mW operating power (typ. at 3.0V)
• 27 mW operating power (typ. at 3.6V)
• 38 mW operating power (typ. at 5.0V)
• Digital bandpass filters
• ±0.5 dB absolute gain accuracy (untrimmed)
• 28-pin SO and 44-pin TQFP packages
• Pin compatible with ST5090 and ST5092
BLOCK DIAGRAM
APPLICATIONS
• GSM digital cellular telephones
• Battery operated audio front-ends for DSPs
• ISDN Terminals
• CT2 and DECT digital cordless telephones
MIC3-
MIC2-
MIC1-
MIC3+
MIC2+
MIC1+
BZ
SP1-
SP1+
SP2-
SP2+
MUX
VS TE
MUX
PreAmp
TX
Gain
11
0...22.5 dB
1.5 dB step
PCM
A to D
Converter
Tone
Gain
DE _Bandpass
Filter
Compressor
EN
TX
Register
Clock
Generator
Ring/Tone/DTMF
Generator
BE
Buzzer Control
OE1
Buffer
Amplifiers
PCM
D to A
Converter
4
0...-27 dB
3 dB step
Sidetone
Gain
2
Serial
Control
Interface
RTE
RX Gain
(SP1/SP2)
SI
SE
33 +
+
-12.5...-27.5 dB
1 dB step
Bandpass
Filter
Expander
EN
RX
Register
0...-30 dB
2 dB step
OE2
TX
MCLK
FS
CO
CI
CS
CCLK
LO
RX
1