MSM7508BRS Oki Semiconductor, MSM7508BRS Datasheet

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MSM7508BRS

Manufacturer Part Number
MSM7508BRS
Description
Single rail CODEC
Manufacturer
Oki Semiconductor
Datasheet
E2U0013-28-81
¡ Semiconductor
¡ Semiconductor
MSM7508B/7509B
Single Rail CODEC
GENERAL DESCRIPTION
The MSM7508B and MSM7509B 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 ISDN and digital wireless systems.
The MSM7508B/MSM7509B are the transmission-clocks extended versions of the MSM7508/
MSM7509. It is recommended to use the MSM7508/MSM7509 for the transmission clocks of 64,
128, 256kHz.
FEATURES
• Single power supply: +5 V 5%
• Low power consumption
• ITU-T Companding law
• Built-in PLL eliminates a master clock
• Transmission clock:
• Adjustable transmit gain
• Built-in reference voltage supply
• Package options:
Note:
Operating mode:
Power down mode:
16-pin plastic DIP (DIP16-P-300-2.54-W1)
24-pin plastic SOP (SOP24-P-430-1.27-K)
28-pin plastic QFJ (PLCC) (QFJ28-P-S450-1.27) (Product name : MSM7508BJS)
MSM7508B:
MSM7509B:
The product names are indicated in PIN CONFIGURATION.
64/128/256/512/1024/2048 kHz
96/192/384/768/1536/1544/200 kHz
m-law
A-law
17.5 mW Typ.
1.5 mW Typ.
37 mW Max.
3 mW Max.
(Product name : MSM7508BRS)
(Product name : MSM7509BRS)
(Product name : MSM7508BGS-K)
(Product name : MSM7509BGS-K)
(Product name : MSM7509BJS)
Previous version: Nov. 1996
This version: Aug. 1998
MSM7508B/7509B
1/17

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MSM7508BRS Summary of contents

Page 1

... QFJ (PLCC) (QFJ28-P-S450-1.27) (Product name : MSM7508BJS) Note: The product names are indicated in PIN CONFIGURATION. This version: Aug. 1998 MSM7508B/7509B Previous version: Nov. 1996 37 mW Max Max. (Product name : MSM7508BRS) (Product name : MSM7509BRS) (Product name : MSM7508BGS-K) (Product name : MSM7509BGS-K) (Product name : MSM7509BJS) 1/17 ...

Page 2

Semiconductor BLOCK DIAGRAM + AIN+ RC – Active AIN– GSX SGC Signal Ground SG Voltage Ref. + AOUT – AD Transmit BPF Conv. Controller (8th) Auto TPLL Zero RPLL DA Receive LPF Conv. Controller (5th) PWD PWD Logic MSM7508B/7509B ...

Page 3

Semiconductor PIN CONFIGURATION (TOP VIEW) SGC AOUT PDN 6 RSYNC 7 8 PCMIN connect pin 16-Pin Plastic DIP ...

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 V DD Power supply for +5 V. PCMIN PCM signal input. A serial PCM signal input to this pin is converted to an analog signal in synchronization with the RSYNC signal and BCLOCK signal. The data rate of ...

Page 6

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 7

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 Input High Voltage Input Low Voltage Clock Frequency Sync Pulse Frequency ...

Page 8

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 Analog Output Offset ...

Page 9

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 MSM7508B, lower ...

Page 10

Semiconductor AC Characteristics (Continued) Parameter Idle Channel Noise Absolute Level (Initial Difference) Absolute Delay Transmit Group Delay Receive Group Delay Crosstalk Attenuation *1 Psophometric filter is used *2 Upper is specified for the MSM7508B, lower for the MSM7509B *3 ...

Page 11

Semiconductor AC Characteristics (Continued) Parameter Discrimination Out-of-band Spurious Intermodulation Distortion Power Supply Noise Rejection Ratio Digital Output Delay Time *5 The measurement under idle channel noise Freq. Level Symbol Condition (Hz) (dBm0) 4.6 kHz DIS 0 ...

Page 12

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 13

Semiconductor APPLICATION CIRCUIT Analog input Analog output 0 V – 20W The analog output signal has an amplitude of 1.2 V above and below the offset voltage level of V /2. DD ...

Page 14

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 15

Semiconductor PACKAGE DIMENSIONS DIP16-P-300-2.54-W1 MSM7508B/7509B (Unit : mm) Package material Epoxy resin Lead frame material 42 alloy Pin treatment Solder plating Solder plate thickness more Package weight (g) 1.00 TYP. 15/17 ...

Page 16

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 17

Semiconductor QFJ28-P-S450-1.27 Spherical surface 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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