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Part Number: MSM7540L
Description: The MSM7540L/7560L are single channel ADPCM CODEC ICs which perform mutual transcoding between an anal...
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MSM7540L
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DataSheet
General Description
MSM7540L General Description
The MSM7540L/7560L are single channel ADPCM CODEC ICs which perform mutual transcoding between an analog voice band signal 300 to 3400 Hz and 32 kbps ADPCM serial data.
Using advanced circuit technology, these devices operate from a single 3 V power supply and provide low power consumption.
The MSM7540L/7560L are optimized for advanced digital cordless telephone system applications.
MSM7540L Maximum Ratings
|
Symbol |
Parameter |
Conditions |
Limits |
Unit |
|
VDD |
Power Supply Voltage |
- |
0.3 to +5 |
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 |
MSM7540L Features
• Single 3 V Power Supply Operation
• ADPCM Algorithm : Complies completely with 1988's version ITU-T G.721 (32 kbps)
• Transmit/Receive Full-Duplex Operation
• Transmit/Receive Synchronous Mode Only
• Serial ADPCM Transmission Data Rate : 32 kbps to 2048 kbps
• Serial PCM Transmission Data Rate : 64 kbps to 2048 kbps
• PCM Interface Coding Format
MSM7540L : A-law or Linear (14 bit, 2's compliment) Selectable
MSM7560L : -law or Linear (14 bit, 2's compliment) Selectable
• Low Power Consumption
Operating Mode : 18 mW Typ. (VDD = 3.0 V)
Power-Down Mode : 0.3 mW Typ. (VDD = 3.0 V)
• Two Analog Input Amplifier Stages : Externally Adjustable Gain
• Analog Output Stage : Push-pull Drive (direct drive of 350 + 120 nF)
• Built-in Crystal Oscillator (10.368 MHz)
• Built-in Reference Voltage Supply
• Option Reset Specified by ITU-T G. 721/ADPCM
• Package:
28-pin plastic SOP (SOP28-P-430-1.27-K) (Product name: MSM7540LGS-K)
(Product name: MSM7560LGS-K)
32-pin plastic TSOP (TSOPI32-P-814-0.50-1K) (Product name: MSM7560LTS-K)
• ADPCM Algorithm : Complies completely with 1988's version ITU-T G.721 (32 kbps)
• Transmit/Receive Full-Duplex Operation
• Transmit/Receive Synchronous Mode Only
• Serial ADPCM Transmission Data Rate : 32 kbps to 2048 kbps
• Serial PCM Transmission Data Rate : 64 kbps to 2048 kbps
• PCM Interface Coding Format
MSM7540L : A-law or Linear (14 bit, 2's compliment) Selectable
MSM7560L : -law or Linear (14 bit, 2's compliment) Selectable
• Low Power Consumption
Operating Mode : 18 mW Typ. (VDD = 3.0 V)
Power-Down Mode : 0.3 mW Typ. (VDD = 3.0 V)
• Two Analog Input Amplifier Stages : Externally Adjustable Gain
• Analog Output Stage : Push-pull Drive (direct drive of 350 + 120 nF)
• Built-in Crystal Oscillator (10.368 MHz)
• Built-in Reference Voltage Supply
• Option Reset Specified by ITU-T G. 721/ADPCM
• Package:
28-pin plastic SOP (SOP28-P-430-1.27-K) (Product name: MSM7540LGS-K)
(Product name: MSM7560LGS-K)
32-pin plastic TSOP (TSOPI32-P-814-0.50-1K) (Product name: MSM7560LTS-K)
MSM7540L Connection Diagram
MSM7540L
PDF/DataSheet Download
- Datasheet: MSM7540L
- File Size: 134852 KB
- Manufacturer: OKI
- Click here to Download
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