MSM7582

E2U0035-16-X2 ¡ Semiconductor MSM7582/7582B ¡ Semiconductor p/4 Shift QPSK MODEM This version: Jan. 1998 MSM7582/7582B Previous version: Nov. 1996 GENERAL DESCRIPTION The MSM7582/7582B are CMOS ICs for the p/4 shift QPSK modem developed for the digital cordless telephone systems. The devices are designed for Personal and Cell station applications, the MSM7582B is the improved MSM7582 in modulator burst rise-up and fall-down characteristics. FEATURES Single Power Supply (VDD: 2.7 V to ␣ 3.6 V) (Modulator Block) Built-in Root Nyquist Filter for Baseband Limiting (50% Roll-off) Ramp Bit for Burst Signal Rise-up: MSM7582/1.75 symbols MSM7582B/2.0 symbols Ramp Bit for Burst Signal Fall-down: MSM7582/2.75 symbols MSM7582B/2.0 symbols Built-in D/A converters for Analog Output of Quadrature Signal I/Q Components and Power Envelope Output I2 + Q2 Differential I/Q Analog output format I/Q Output DC Offset / Gain Adjustable (Demodulator Block) Full Digital System, p/4 shift QPSK Demodulation Input IF signal Frequency Selectable: 1.2/10.7/10.75/10.8 MHz Built-in Clock Recovery: 4 Circuits useful for Cell station (Common) Various Power-down Modes: Tramsmit/Receive Independant Built-in Precise Analog Voltage Reference MCU Serial Interface for Mode setting and Built-in Test circuit Test Modes: Eye pattern / AFC Compensating Signal / Phase Detection Signal, possible to monitor Transmission Speed: 384 kbps Low Power consumption Operating mode : 15 mA Typ. /...