MSM7582 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.
MSM7582 Key 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 ponents 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 (mon)
MSM7582 Applications
- 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 ponents and Power Envelope Output I2 + Q2