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U6101B-AFSG3 Datasheet

  • U6101B-AFSG3

  • IF System and I/Q Demodulator for Digital Satellite TV Trans...

  • 7頁

  • TEMIC

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U6101B
IF System and I/Q Demodulator for Digital Satellite
TV Transmissions
Description
The U6101B is a monolithic integrated circuit in
TEMIC鈥檚 UHF 5 technology for
Satellite Digital Video
Broadcasting
(DVBS) and other digital direct satellite
service applications. The circuit operates in a wide
frequency range and in a large input level range.
Implemented are two orthogonal mixer stages (precise
phase-matched by a control loop), a gain-controlled IF
amplifier of high input sensitivity with two switchable
isolated inputs, and an AGC-system for tuner and IF level
control. Alternatively the output level may be controlled
automatically, e.g., via the channel decoder AGC signal
output.
The local oscillator operates at IF input frequency. The
oscillator signal is internally doubled and divided again
to generate the orthogonal mixer driving signals.
Features
D
Frequency range from 390 to 520 MHz
D
Two unbalanced switchable inputs
D
High I/Q phase accuracy, based on TEMIC鈥檚 patented
0擄/90擄 control loop circuit
Benefits
D
Two switchable IF-inputs to connect a combined
SAW filter
D
Oscillator for SAW or LC tank circuit
D
Adjustable tuner AGC control
D
Low impedance output driver
D
Balanced prescaler output
D
Output signal level adjustable or fixed at typical or
minimum data sheet value by pin programming
D
D
D
D
D
Input impedance 50
鈩?
gain independent
High input sensitivity
AGC control range 鈥?5 dB
Internal AGC detector
Additionally external gain control and output level
setting possible
D
Low power consumption, 5-V supply voltage
Ordering Information
Extended Type Number
U6101B-AFSG3
Package
SSO20
Remarks
Taped and reeled
TELEFUNKEN Semiconductors
Rev. A1, 14-May-97
1 (7)
Preliminary Information

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