MSM7543RS Oki Semiconductor, MSM7543RS Datasheet

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MSM7543RS

Manufacturer Part Number
MSM7543RS
Description
Single rail CODEC
Manufacturer
Oki Semiconductor
Datasheet

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Part Number:
MSM7543RS
Manufacturer:
ALLEGRO
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6 217
E2U0015-28-81
¡ Semiconductor
¡ Semiconductor
MSM7543/7544
Single Rail CODEC
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.
FEATURES
• Single power supply: +5 V 5%
• Low power consumption
• ITU-T Companding 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
• 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 W line transformer
• Package options:
Operating mode:
Power save mode:
Power down mode:
20-pin plastic skinny DIP (DIP20-P-300-2.54-S1) (Product name : MSM7543RS)
24-pin plastic SOP (SOP24-P-430-1.27-K)
26-pin plastic TSOP (TSOPII26/20-P-300-1.27-K) (Product name : MSM7543TS-K)
MSM7543:
MSM7544:
96/192/384/768/1536/1544 kHz
m-law
A-law
4.5 mW Typ.
1.5 mW Typ.
20 mW Typ.
31.5 mW Max.
8 mW Max.
3 mW Max.
(Product name : MSM7544RS)
(Product name : MSM7543GS-K)
(Product name : MSM7544GS-K)
(Product name : MSM7544TS-K)
Previous version: Nov. 1996
This version: Aug. 1998
V
V
V
DD
DD
DD
= 5 V
= 5 V
= 5 V
MSM7543/7544
1/19

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MSM7543RS Summary of contents

Page 1

... Built-in analog loop back test mode • Differential type analog output. Directly drives a 600 W line transformer • Package options: 20-pin plastic skinny DIP (DIP20-P-300-2.54-S1) (Product name : MSM7543RS) 24-pin plastic SOP (SOP24-P-430-1.27-K) 26-pin plastic TSOP (TSOPII26/20-P-300-1.27-K) (Product name : MSM7543TS-K) This version: Aug ...

Page 2

Semiconductor BLOCK DIAGRAM + AIN+ – RC AIN– LPF GSX TMC – VFRO + SG PWI – AOUT– – AOUT BPF AD Transmit (8th) Conv. Controller Auto PLL Zero R–TIM LPF DA Receive (5th) Conv. ...

Page 3

Semiconductor PIN CONFIGURATION (TOP VIEW SGC AOUT AIN+ AOUT– AIN– PWI 4 17 GSX VFRO 5 16 TMC RSYNC PDN 8 13 BCLOCK ...

Page 4

Semiconductor PIN AND FUNCTIONAL DESCRIPTIONS AIN+, AIN–, GSX Transmit analog input and transmit level adjustment. AIN non-inverting input to the op-amp; AIN– inverting input to the op-amp; GSX is connected to the output of the ...

Page 5

Semiconductor PWI, AOUT+, AOUT– PWI is connected to the inverting input of the receive driver. The receive driver output is connected to the AOUT– pin. Therefour, the receive level can be adjusted with the pins VFRO, PWI, and AOUT–. ...

Page 6

Semiconductor RSYNC Receive synchronizing signal input. Eight required bits are selected from serial PCM signals on the PCMIN pin by the receive synchronizing signal. Signals in the receive section are synchronized by this synchronizing signal. This signal must be ...

Page 7

Semiconductor DG Ground for the digital signal circuits. This ground is separate from the analog signal ground. The DG pin must be connected to the AG pin on the printed circuit board to make a common analog ground. PDN ...

Page 8

Semiconductor ABSOLUTE MAXIMUM RATINGS Parameter Power Supply Voltage Analog Input Voltage Digital Input Voltage Storage Temperature RECOMMENDED OPERATING CONDITIONS Parameter Power Supply Voltage Operating Temperature Analog Input Voltage Digital Input High Voltage Digital Input Low Voltage Clock Frequency Sync ...

Page 9

Semiconductor ELECTRICAL CHARACTERISTICS DC and Digital Interface Characteristics Parameter Power Supply Current Input High Voltage Input Low Voltage High Level Input Leakage Current Low Level Input Leakage Current Digital Output Low Voltage Digital Output Leakage Current Input Capacitance Symbol ...

Page 10

Semiconductor Transmit Analog Interface Characteristics Parameter Input Resistance Output Load Resistance Output Load Capacitance Output Amplitude Offset Voltage Receive Analog Interface Characteristics Parameter Input Resistance Output Load Resistance Output Load Capacitance Output Amplitude Offset Voltage Symbol Condition R AIN+, ...

Page 11

Semiconductor AC Characteristics Parameter Transmit Frequency Response Receive Frequency Response Transmit Signal to Distortion Ratio Receive Signal to Distortion Ratio Transmit Gain Tracking Receive Gain Tracking *1 Psophometric filter is used *2 Upper is specified for the MSM7543, lower ...

Page 12

Semiconductor AC Characteristics (Continued) Parameter Idle Channel Noise Absolute Level (Initial Difference) Absolute Level (Deviation of Temperature and Power) Absolute Delay Transmit Group Delay Receive Group Delay Crosstalk Attenuation *1 Psophometric filter is used *2 Upper is specified for ...

Page 13

Semiconductor AC Characteristics (Continued) Parameter Discrimination Out-of-band Spurious Intermodulation Distortion D-to-D Mode Gain Power Supply Noise Rejection Ratio Digital Output Delay Time *6 The measurement under idle channel noise Freq. Level Symbol Condition (Hz) (dBm0) 4.6 kHz to 0 ...

Page 14

Semiconductor TIMING DIAGRAM PCM Data Input/Output Timing Transmit Timing BCLOCK XSYNC XD1 SD PCMOUT MSD £ 1/2 • Fc, the Delay of the MSD bit is defined ...

Page 15

Semiconductor APPLICATION CIRCUIT Analog interface 1:1 Analog input 600 W 1:1 300 W Analog input 300 W 600 FREQUENCY CHARACTERISTICS ADJUSTMENT CIRCUIT Microphone amp M C1 MSM7543/7544 ...

Page 16

Semiconductor RECOMMENDATIONS FOR ACTUAL DESIGN • To assure proper electrical characteristics, use bypass capacitors with excellent high frequency characteristics for the power supply and keep them as close as possible to the device pins. • Connect the AG pin ...

Page 17

Semiconductor PACKAGE DIMENSIONS DIP20-P-300-2.54-S1 MSM7543/7544 (Unit : mm) Package material Epoxy resin Lead frame material 42 alloy Pin treatment Solder plating more Solder plate thickness Package weight (g) 1.49 TYP. 17/19 ...

Page 18

Semiconductor SOP24-P-430-1.27-K Mirror finish Notes for Mounting the Surface Mount Type Package The SOP, QFP, TSOP, SOJ, QFJ (PLCC), SHP and BGA are surface mount type packages, which are very susceptible to heat in reflow mounting and humidity absorbed ...

Page 19

Semiconductor TSOPII26/20-P-300-1.27-K Mirror finish Notes for Mounting the Surface Mount Type Package The SOP, QFP, TSOP, SOJ, QFJ (PLCC), SHP and BGA are surface mount type packages, which are very susceptible to heat in reflow mounting and humidity absorbed ...

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