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參數(shù)資料
| 型號： | MPAD |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Quadrature Downconverter |
| 中文描述： | 正交下變頻器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 508K |
| 代理商： | MPAD |
The SL1710 is a quadrature downconverter, intended for
use with both Professional and Consumer Digital Satellite
Applications.
The device contains high linearity, low noise amplifiers,
quadrature mixers, plus an on-chip oscillator, operating
between 350MHz and 500MHz, which may be synthesised via
the differential prescaler outputs.
An AGC with 18dB gain control is provided to cope with a
wide range of input signal levels.
I and Q outputs are via low impedance single ended
amplifiers. These may be connected to a dual channel analog
to digital converter such as the
PCA916,
VP216, VP215 or
VP213, via a suitable anti-alias filter.
FEATURES
I
Wide input frequency range (350-500MHz)
I
On chip oscillator with varactor tuning or SAW
resonator operation capability
I
Nominal 40dB conversion gain from IF input to I
and Q outputs
I
AGC amplifier with 18dB gain control range
I
I to Q phase match 90
°
C to
±
2
°
, gain match
better than 1dB
I
Low impedance I and Q single ended outputs,
with 15MHz
±
1dB BW
I
Divide by 32 prescaler outputs
I
Suitable for QPSK and up to 64QAM systems
APPLICATIONS
I
Consumer digital satellite decoders
I
Professional digital satellite decoders
I
Communication systems
ORDERING INFORMATION
SL1710/KG/MPAS
SL1710/KG/MPAD (Tape and Reel)
Fig. 1 Pin allocation top view
MP16
S
1
16
VCCC
AGC
IOUT
VEEA
IFINB
IFIN
VCCA
QOUT
VEEC
VCCB
VCODIS
VCO
B
VCO
A
VEEB
PSCAL
PSCALB
ABSOLUTE MAXIMUM RATINGS
Storage temperature
Junction temperature
Supply voltage
Voltage at any other pin
-55
°
C to +150
°
C
-29
°
C to +150
°
C
-0.3 to 7.0V
-0.3 to +7.0V
Fig.2. SL1710 block diagram
AGC
IFIN
VCODIS
VCOA
AGC
AGC
÷
32
LO
0 deg
90 deg
Quadrature
generator
PSCALB
PSCAL
Q OUT
I OUT
IFINB
VCOB
SL1710
Quadrature Downconverter
Preliminary Information
DS3842 - 4.1 March 1997
Supersedes October 1996 version in Media IC Handbook HB4599-1.0
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