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Part Number: MSM7728
Description: The MSM7728 is a single-channel linear CODEC CMOS IC for voice signals that contains filters for A/D a...
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MSM7728
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General Description
MSM7728 General Description
The MSM7728 is a single-channel linear CODEC CMOS IC for voice signals that contains filters for A/D and D/A conversions.
Designed especially for a single-power supply and low-power applications, the device is optimized for applications for the analog interfaces of audio signal processing DSPs and digital wireless systems.
The analog outputs include the speaker drive output, earphone drive output and ringer output. Therefore, the sound interface can be configured with a few external circuits.
MSM7728 Maximum Ratings
| Parameter | Symbol | Condition | Rating | Unit |
| Power Supply Voltage | VDD | AG = DG = 0 V | 0.3 to +7.0 | V |
| Analog Input Voltage | VAIN | AG = DG = 0 V | 0.3 to VDD + 0.3 | V |
| Digital Input Voltage | VDIN | AG = DG = 0 V | 0.3 to VDD + 0.3 | V |
| Storage Temperature | TSTG | 55 to +150 | °C |
MSM7728 Features
• Single power supply : 2.5 V to 3.6 V
• Low power consumption
Operating mode : 36 mW Typ.
Power down mode : 0.003 mW Typ.
• Digital signal input/output interface : 14-bit serial code in 2's complement format
• Transmission clock frequency : 112 kHz min., 2048 kHz max.
• Filter characteristics : Complies with ITU-T Recommendation G.714
• Built-in PLL eliminates a master clock
• Built-in PB tone signal generator
• Built-in service tone generator
• Built-in ringer tone generator
• General latch output: 1 bit
• Both transmit and receive gain adjustable by external control
• Receive interface: Speaker direct drive output
Earphone interface output : 600 , 1 mW max.
Ringer output : 70 nF, 4 VPP
• Transmit gain adjustable using an external resistor
• Transmit microphone amplifier is eliminated by the gain setting of a maximum of 36 dB.
• Built-in reference voltage supply
• Serial 8-bit processor interface
• Package:
30-pin plastic SSOP (SSOP30-P-56-0.65-K) (Product name: MSM7728GS-K)
• Low power consumption
Operating mode : 36 mW Typ.
Power down mode : 0.003 mW Typ.
• Digital signal input/output interface : 14-bit serial code in 2's complement format
• Transmission clock frequency : 112 kHz min., 2048 kHz max.
• Filter characteristics : Complies with ITU-T Recommendation G.714
• Built-in PLL eliminates a master clock
• Built-in PB tone signal generator
• Built-in service tone generator
• Built-in ringer tone generator
• General latch output: 1 bit
• Both transmit and receive gain adjustable by external control
• Receive interface: Speaker direct drive output
Earphone interface output : 600 , 1 mW max.
Ringer output : 70 nF, 4 VPP
• Transmit gain adjustable using an external resistor
• Transmit microphone amplifier is eliminated by the gain setting of a maximum of 36 dB.
• Built-in reference voltage supply
• Serial 8-bit processor interface
• Package:
30-pin plastic SSOP (SSOP30-P-56-0.65-K) (Product name: MSM7728GS-K)
MSM7728 Connection Diagram
MSM7728
PDF/DataSheet Download
- Datasheet: MSM7728
- File Size: 153665 KB
- Manufacturer: OKI [OKI electronic componets]
- Click here to Download
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