MSM6882-3

Features:

• Signal power supply:+3.6 V (MSM6882-3)+5 V (MSM6882-5)
• 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 from.
• Bit rate 2400/1200 bps
• CCIR Rec. 623
• The modulation method can be selected from COS-FFSK and SIN-FFSK.
• Built-in crystal oscillation circuit.
• Package options:
22-pin plastic DIP (DIP22-P-400-2.54) (Product name: MSM6882-3RS) (Product name: MSM6882-5RS)
24-pin plastic SOP (SOP24-P-430-1.27-K) (Product name: MSM6882-3GS-K) (Product name: MSM6882-5GS-K)


Pinout

Specifications

Parameter	Symbol	Condition	Rating	Unit
Power Supply Voltage	VDD	Ta = 25°C With respect to GND	0.3 to +7.0	V
Input Voltage	VI	Ta = 25°C With respect to GND	0.3 to VDD+0.3	V
Operating Temperature	Top	-	25 to 70	°C
Storage Temperature	TSTG	-	55 to 150	°C

Description

The MSM6882-3/6882-5 is a single chip MSK (Minimum Shift Keying) modem which is fabricated by Oki's low power co-nsumption CMOS silicon gate technology. The demodulator receives the data to be transmitted (SD) synchronized wi-th the transmit timing clock (ST) generated by the on-chip clock generator. The signal of MSM6882-3 , which is modulated by MSK m-ethod, is output.

The demodulator MSM6882-3 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.