MSM7578HRS Oki Semiconductor, MSM7578HRS Datasheet

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MSM7578HRS

Manufacturer Part Number
MSM7578HRS
Description
Signal rail CODEC
Manufacturer
Oki Semiconductor
Datasheet
E2U0017-28-81
¡ Semiconductor
¡ Semiconductor
MSM7578H/7578V/7579
Single Rail CODEC
GENERAL DESCRIPTION
The MSM7578 and MSM7579 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
particularly optimized for telephone terminals in digital wireless systems and ISDN systems.
The devices use the same transmission clocks as those used in the MSM7508B and MSM7509B.
The analog output signal can directly drive a piezoelectric type handset receiver.
FEATURES
• Single power supply: +5.0 V 5%
• Low power consumption
• ITU-T Companding law
• Built-in PLL eliminates a master clock
• Serial data rate: 64/128/256/512/1024/2048 kHz
• Adjustable transmit gain
• Built-in reference voltage supply
• Directly drive a line transformer of 600 W
• The 16-pin DIP and 24-pin SOP package products provide pin compatibility with the MSM7508B/
• The 20-pin SSOP package products have 1/3 the foot print of conventional products
• Package options:
Operating mode:
Power down mode:
7509B
16-pin plastic DIP (DIP16-P-300-2.54)
24-pin plastic SOP (SOP24-P-430-1.27-K)
20-pin plastic SSOP (SSOP20-P-250-0.95-K) (Product name : MSM7578HMS-K)
MSM7578H:
MSM7579:
MSM7578V:
96/192/384/768/1536/1544/200 kHz
m-law
A-law
m/A-law pin-selectable
0.05 mW Typ. 0.3 mW Max.
25 mW Typ.
47 mW Max.
(Product name : MSM7578HRS)
(Product name : MSM7579RS)
(Product name : MSM7578VRS)
(Product name : MSM7578HGS-K)
(Product name : MSM7578VGS-K)
(Product name : MSM7579GS-K)
(Product name : MSM7579MS-K)
(Product name : MSM7578VMS-K)
V
V
DD
DD
= 5 V
= 5 V
Previous version: Nov. 1996
This version: Aug. 1998
MSM7578H/7578V/7579
1/18

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MSM7578HRS Summary of contents

Page 1

... SSOP (SSOP20-P-250-0.95-K) (Product name : MSM7578HMS-K) This version: Aug. 1998 MSM7578H/7578V/7579 Previous version: Nov. 1996 47 mW Max (Product name : MSM7578HRS) (Product name : MSM7579RS) (Product name : MSM7578VRS) (Product name : MSM7578HGS-K) (Product name : MSM7578VGS-K) (Product name : MSM7579GS-K) (Product name : MSM7579MS-K) (Product name : MSM7578VMS-K) 1/18 ...

Page 2

Semiconductor BLOCK DIAGRAM – AIN– LPF AIN+ GSX SGC SG GEN SG – AOUT + SG 8th AD TCONT BPF CONV. AUTO PLL ZERO VR GEN RTIM 5th DA RCONT LPF CONV. PWD PWD Logic MSM7578H/7578V/7579 PCMOUT ...

Page 3

Semiconductor PIN CONFIGURATION (TOP VIEW) SGC 1 16 AIN AIN– AOUT 3 14 GSX (ALAW PDN 6 11 BCLK RSYNC 7 10 XSYNC PCMIN 8 9 PCMOUT 16-Pin ...

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 BCLK 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 SG Signal ground voltage output. The output voltage is 1/2 of the power supply voltage. The output drive current capability is 300 mA. This pin provides the SG level for CODEC peripherals. This output voltage level is undefined ...

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

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 Analog ...

Page 10

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 MSM7578H, lower ...

Page 11

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 12

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 13

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

Page 14

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

Page 15

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 16

Semiconductor PACKAGE DIMENSIONS DIP16-P-300-2.54 MSM7578H/7578V/7579 (Unit : mm) Package material Epoxy resin Lead frame material 42 alloy Pin treatment Solder plating more Solder plate thickness Package weight (g) 0.99 TYP. 16/18 ...

Page 17

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 18

Semiconductor SSOP20-P-250-0.95-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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