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Oki Electric Industry Electronic Components Datasheet

MSM7582 Datasheet

pie/4 Shift QPSK MODEM

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E2U0035-16-X2
¡¡SemicondSucetormiconductor
MSM7582/7582B
p/4 Shift QPSK MODEM
This veMrsSioMn7: 5Ja8n2./71599882B
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. / Modulator (VDD = 3.0 V)
: 9 mA Typ. / Demodulator (VDD = 3.0 V)
Whole system Power-down mode: 0.01 mA Typ. (VDD = 3.0 V)
• Package:
32-pin plastic TSOP (TSOPI32-P-814-0.50-1K)(Product name : MSM7582TS-K)
(Product name : MSM7582BTS-K)
1/24


Oki Electric Industry Electronic Components Datasheet

MSM7582 Datasheet

pie/4 Shift QPSK MODEM

No Preview Available !

PDN0
PDN1
PDN2
IFIN
MCK
IFCK
X2
X1
DEN
EXCK
DIN
DOUT
Phase Detector
Delay Detector
S
E
L
IFSEL1
(From CR)
IFSEL0
(From CR)
To each block
Decoder
To each
Control block
Register (CR)
To monitor output
of each block
To modem ENV
AFC
Decision
Unit
DPLL
S
E
L
PS/CS
I+ +1
I– -1
Q+ +1
Q– -1
I ± D/A CONV
Q ± D/A CONV
Root Nyquist
LPF
S/P
MAPPING
ENV
+1
ENV D/A CONV
S 3.84 MHz S
E
L
To
Monitor To D/A
E
L
output of
SG VREF
each block
To internal SG
TEST1, TEST0
(From CR)
TXCSEL
(From CR)
APLL
1/10
384 kHz
VDD
DGND
AGND
RXD
RXC
AFC
RPR
RCW
SLS1
SLS2
TXD
TXW
TXCI
TXCO


Part Number MSM7582
Description pie/4 Shift QPSK MODEM
Maker OKI
PDF Download

MSM7582 Datasheet PDF






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