Single Rail 35mW drive
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Description
The
MSM7732 is a single-channel full duplex CODEC CMOS IC which performs mutual
transcoding between the analog voice band signals and 64 kbps PCM serial data.
This device performs such functions as DTMF tone and several types of tone
generation, transmit/receive data mute and gain control, and side tone path.
Block Diagram
Features
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Single 3 V power supply operation VDD : 2.4 V to
3.3 V |
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PCM interface data format : µ-law/A-law/linear (2’s
complement) selectable |
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PCM interface timing : long frame synchronous timing/short
frame synchronous timing |
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Full-duplex single channel operation |
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Serial PCM transmission data rate: 64 kbps to 2048 kbps
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Low power consumption
Operating mode : 15 mW typ.
(VDD = 3.0 V) Power-down mode : 3 µW typ. (VDD = 3.0 V)
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Master clock frequency : 2.048 MHz |
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Analog output stage
35 mW drive for receiver speaker
(differential drive of 32  )--Gain adjustable
66 mW drive for receiver speaker (differential
drive of 30 )--Gain
adjustable
8.8 mW drive for earphone speaker (single drive of 32 ) --Gain adjustable |
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Transmit/receive mute, transmit/receive programmable gain
control |
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Side tone path with programmable attenuation (8-step
adjustment level) |
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Built-in DTMF tone generator |
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Built-in various ringing/function tone generator |
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Built-in various ring back tone generator |
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Serial MCU interface control : 3 bit |
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Built-in transmit voice signal detector |
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Built-in op amps and analog switches for various analog
interface |
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Package options : 30-pin plastic SSOP (SSOP30-P-56-0.65-K)
(Product name: MSM7732-01 MB) 48-pin plastic TQFP (TQFP48-P-0707-0.50-K)
(Product name: MSM7732-01 TB) 48-pin plastic LGA (P-TFLGA48-0707-0.8) (Product
name: MSM7732-01 LB) 48-pin plastic BGA (P-LFBGA48-0707-0.8) (Product name:
MSM7732-01 LA) |
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