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Part Number: MSM7544
Description: The MSM7543 and MSM7544 are single-channel CODEC CMOS ICs for voice signals ranging from 300 to 3400 H...
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MSM7544
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General Description
MSM7544 General Description
The MSM7543 and MSM7544 are single-channel CODEC CMOS ICs for voice signals ranging from 300 to 3400 Hz. These devices contain filters for A/D and D/A conversion.
Designed especially for a single-power supply and low-power applications, these devices are optimized for telephone terminals in digital wireless systems, ISDN terminals, and digital PBXs.
The MSM7543 and MSM7544 use newly-designed operational amplifiers to keep small current deviations caused by power voltage fluctuations.
The devices use the same transmission clocks as those used in the MSM7508B and MSM7509B.The analog output signal, which is of a differential type and can drive a 600 W load, can directly drive a handset receiver.
MSM7544 Maximum Ratings
|
Symbol |
Parameter |
Conditions |
Limits |
Unit |
|
VDD |
Power Supply Voltage |
- |
0 to 7 |
V |
|
VAIN |
Analog Input Voltage |
0.3 to VDD + 0.3 |
V | |
|
VDIN |
Digital Input Voltage |
0.3 to VDD + 0.3 |
V | |
|
TSTG |
Storage Temperature |
- |
55 to +150 |
°C |
MSM7544 Features
• Single power supply: +5 V ±5%
• Low power consumption
Operating mode: 20 mW Typ. 31.5 mW Max. VDD = 5 V
Power save mode: 4.5 mW Typ. 8 mW Max. VDD = 5 V
Power down mode: 1.5 mW Typ. 3 mW Max. VDD = 5 V
• ITU-T Companding law
MSM7543: -law
MSM7544: A-law
• The transmission characteristics of the devices comply with ITU-T G.714
• Built-in PLL eliminates a master clock
• Serial data rate: 64/128/256/512/1024/2048 kHz
96/192/384/768/1536/1544 kHz
• Adjustable transmit gain
• Adjustable receive gain
• Built-in reference voltage supply
• Built-in analog loop back test mode
• Differential type analog output. Directly drives a 600 line transformer
• Package options:
20-pin plastic skinny DIP (DIP20-P-300-2.54-S1) (Product name : MSM7543RS)
(Product name : MSM7544RS)
24-pin plastic SOP (SOP24-P-430-1.27-K) (Product name : MSM7543GS-K)
(Product name : MSM7544GS-K)
26-pin plastic TSOP (TSOPII26/20-P-300-1.27-K) (Product name : MSM7543TS-K)
(Product name : MSM7544TS-K)
• Low power consumption
Operating mode: 20 mW Typ. 31.5 mW Max. VDD = 5 V
Power save mode: 4.5 mW Typ. 8 mW Max. VDD = 5 V
Power down mode: 1.5 mW Typ. 3 mW Max. VDD = 5 V
• ITU-T Companding law
MSM7543: -law
MSM7544: A-law
• The transmission characteristics of the devices comply with ITU-T G.714
• Built-in PLL eliminates a master clock
• Serial data rate: 64/128/256/512/1024/2048 kHz
96/192/384/768/1536/1544 kHz
• Adjustable transmit gain
• Adjustable receive gain
• Built-in reference voltage supply
• Built-in analog loop back test mode
• Differential type analog output. Directly drives a 600 line transformer
• Package options:
20-pin plastic skinny DIP (DIP20-P-300-2.54-S1) (Product name : MSM7543RS)
(Product name : MSM7544RS)
24-pin plastic SOP (SOP24-P-430-1.27-K) (Product name : MSM7543GS-K)
(Product name : MSM7544GS-K)
26-pin plastic TSOP (TSOPII26/20-P-300-1.27-K) (Product name : MSM7543TS-K)
(Product name : MSM7544TS-K)
MSM7544 Connection Diagram
MSM7544
PDF/DataSheet Download
- Datasheet: MSM7544
- File Size: 164153 KB
- Manufacturer: OKI
- Click here to Download
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