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 (V
DD
: 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
I
2
+ Q
2
• 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. / Modulator (V
DD
= 3.0 V)
: 9 mA Typ. / Demodulator (V
DD
= 3.0 V)
Whole system Power-down mode: 0.01 mA Typ. (V
DD
= 3.0 V)
• Package:
32-pin plastic TSOP (TSOPI32-P-814-0.50-1K)(Product name : MSM7582TS-K)
(Product name : MSM7582BTS-K)
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