Voice-Band Audio CODEC for CDMA - Hynix Semiconductor
Description
GM0936TQ
GM0936TQ
Voice-Band Audio CODEC for CDMA
Features
• Single 3-V operation • Low power consumption – Operating mode .
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20mW Typ – Power-down mode .
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1mW Typ • Combined A/D, D/A, and Filters • Electret microphone bias reference voltage available • Compatible with all digital signal processors (DSPs) • Programmable volume control • 300 Hz - 3.
6 kHz Passband with Specified Master clock 48 LQFP (TOP VIEW)
MICBIAS EXTMIC EARGS EARB MICGS MICIN 41 40 ____ EARA PDN MICSEL NC 37 36 35 34 33 32 31 30 29 28 27 26 25 13 14 15 16 17 18 19 20 21 22 23 24 NC 48 NC 47
• Designed for standard 2.
048MHz master clock for U.
S.
Analog, U.
S.
Digital, CT2, DECT, GSM, and PCS Standards for Hand-held Battery-Powered Telephones • On-chip voltage references • Package Type : 48 LQFP, 20 DIP, 20 SOP
20 DIP/SOP (TOP VIEW)
46
45
44
43
42
NC ____ PDN EARA EARB EARGS Vcc __________ MICMUTE NC DIN FSR __________ EARMUTE 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 MICBIAS MICGS MICIN VMID GND NC NC DOUT FSX CLK NC NC AVcc NC NC NC NC DVcc NC __________ MICMUTE NC
1 2 3 4 5 6 7 8 9 10 11 12
39 38
VMID NC AGND NC NC NC NC NC NC DGND NC NC
DIN FSR __________ EARMUTE NC CLK FSX
DOUT NC
NC
NC
1
NC
NC
GM0936TQ
Description
The GM0936TQ contains A/D and D/A conversion functions integrated on a single chip, and utilizes the sigma-delta modulation technique to achieve high resolution data conversion and low power consumption.
The GM0936TQ is an ideal analog front end device for high performance voice-band communication systems.
Cellular telephone systems are targeted in particular; however, these integrated circuits can function in other systems including digital audio, telecommunications, and data acquisition.
The transmit section is designed to interface directly with an electret microphone element.
One of two microphone input signals, MICIN and EXTMIC, is selected by MICSEL.
If MICSEL is floated or Low, then MICIN is selected, and if MICSEL is high, then EXTMIC is selec...
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