MSM6948RS Oki Semiconductor, MSM6948RS Datasheet

no-image

MSM6948RS

Manufacturer Part Number
MSM6948RS
Description
1200 bps single chip MSK MODEM
Manufacturer
Oki Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MSM6948RS
Manufacturer:
OKI
Quantity:
1 800
¡ Semiconductor
¡ Semiconductor
MSM6948/6948V
1200 bps Single Chip MSK Modem
E2A0034-16-X1
GENERAL DESCRIPTION
The MSM6948/6948V is a single chip MSK (Minimum Shift Keying) modem which is fabricated by
Oki’s low power consumption CMOS silicon gate technology.
The demodulator receives the data to be transmitted (SD) synchronized with the transmit timing
clock (ST) generated by the on-chip clock generator. The signal, which is modulated by MSK method,
is output.
The demodulator converts the received MSK signal to the received data (RD) by means of a delay
detection technique after limiting the band of the received MSK signal. This signal is input to the
digital PLL and the re-generated timing clock (RT) is output from the demodulator, synchronized
with the RD.
FEATURES
• Signal power supply: +5 V
• On-chip SCF (Switched Capacitor Filter)
• The transmit filter can be also used as voice splatter filter.
• The receive timing re-generator has two different lock-in time performance options to be chosen
• Built-in crystal oscillation circuit.
• Small number of external components for easy application.
• Wide application-wireless data equipment, MCA system.
• Low power consumption CMOS.
• Package options:
from.
18-pin plastic DIP
24-pin plastic SOP
(DIP18-P-300-2.54)
(SOP24-P-430-1.27-K)
(Product name: MSM6948RS)
(Product name: MSM6948GS-K)
Previous version: Nov. 1996
This version: Jan. 1998
MSM6948/6948V
1/13

Related parts for MSM6948RS

MSM6948RS Summary of contents

Page 1

... Small number of external components for easy application. • Wide application-wireless data equipment, MCA system. • Low power consumption CMOS. • Package options: 18-pin plastic DIP (DIP18-P-300-2.54) 24-pin plastic SOP (SOP24-P-430-1.27-K) This version: Jan. 1998 MSM6948/6948V Previous version: Nov. 1996 (Product name: MSM6948RS) (Product name: MSM6948GS-K) 1/13 ...

Page 2

Semiconductor BLOCK DIAGRAM ST Modulator Timing Re-generator MCK Transmit LPF LPF RC Receive LIM LPF BPF PDF *1 Power ON Reset Clock Generator *1 Post Detection Filter ...

Page 3

Semiconductor PIN CONFIGURATION (TOP VIEW *MCK 18-Pin Plastic DIP *NC (MSM6948V connect pin ...

Page 4

Semiconductor PIN DESCRIPTION Name Crystal connection pins 3.6864 MHz crystal shall be connected. When an external clock is applied for MSM6948's oscillation source, it has to be input to X2 this case, X2 has to ...

Page 5

Semiconductor Name Digital ground. DG This pin should be common with AG at the system ground point as close as possible. Voice signal input. The signal input to this pin can be sent out to AO through the transmit ...

Page 6

Semiconductor Name Demodulated serial data output. RD This data is synchronized with the re-generated timing clock RT. Receive data timing clock output. This signal is re-generated by internal digital PLL. Synchronizing to falling edge of RT output. ...

Page 7

Semiconductor ABSOLUTE MAXIMUM RATINGS Parameter Symbol Power Supply Voltage V DD Analog Input Voltage * Digital Input Voltage * Operating Temperature T op Storage Temperature T STG *1 TI ME, SD, CF, CT, ...

Page 8

Semiconductor ELECTRICAL CHARACTERISTICS DC and Digital Interface Characteristics Parameter Symbol Power Supply Current I DD Oscilating Frequency f MCK I IL Input Leakage Current * Input Voltage * OL1 Output Voltage *2 ...

Page 9

Semiconductor Voice signal input (TI) Parameter Symbol Voltage Gain GT Input Signal Level V TI Input Resistance R TI Built-in signal ground (SG) Parameter Symbol DC Voltage V SG Receive signal input (AI) Parameter Symbol Input Resistance R IR ...

Page 10

Semiconductor BUILT-IN FILTER FREQUENCY CHARACTERISTICS GAIN (dB –10 –20 –30 –40 –50 –60 Transmit Low-Pass Filter –70 GAIN (dB) 0.5 0 –10 –20 –30 –40 –50 –60 Receive Band-Pass Filter – ...

Page 11

Semiconductor APPLICATION CIRCUIT Crystal 3.6864 MHz 3.6864 MHz Clock Transmit Control "1" : Data Signal (SD) "0" : Voice Signal (TI) Transmit Data Transmit Data Timing Clock *NC : MSM6948V ...

Page 12

Semiconductor PACKAGE DIMENSIONS DIP18-P-300-2.54 MSM6948/6948V (Unit : mm) Package material Epoxy resin Lead frame material 42 alloy Pin treatment Solder plating Solder plate thickness more Package weight (g) 1.30 TYP. 12/13 ...

Page 13

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 ...

Related keywords