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What is U2794B-AFSG3?

This electronic component, produced by the manufacturer "TEMIC Semiconductors", performs the same function as "1000 MHz Quadrature Demodulator".


U2794B-AFSG3 Datasheet PDF - TEMIC Semiconductors

Part Number U2794B-AFSG3
Description 1000 MHz Quadrature Demodulator
Manufacturers TEMIC Semiconductors 
Logo TEMIC Semiconductors Logo 


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TELEFUNKEN Semiconductors
1000 MHz Quadrature Demodulator
U2794B
Description
U2794B silicon monolithic integrated circuit is a quadra-
ture demodulator that is manufactured using
TELEFUNKEN’s advanced UHF technology. This
demodulator features a frequency range from
70 – 1000 MHz, low current consumption, selectable
gain, power down mode and is adjustment free. The IC is
suitable for direct conversion and image rejection
applications in digital radio systems up to 1 GHz such as
cellular radio, cordless telephone, cable TV and satellite
TV systems.
Features
D Supply voltage 5 V (typ.)
D Very low power consumption 125 mW (typ.)
D Very good image rejection by means of phase control
loop for precise 90° phase shifting
D Duty cycle regeneration for single ended LO input
signal
D Low LO input level –10 dBm (typ.)
D LO – frequency from 70 MHz to 1 GHz
D Power down mode
D 25 dB gain control
D Very low I/Q output dc offset voltage typ. < 5 mV
Block Diagram
VS PD
5,6 14
Power
down
7
RFin
8
11
GC
90°Control
loop
16,18
GND
IIX II
43
1 IX
OUTPUT
2I
0°
90°
Frequency
doubler
10
QQX
9
QQ
Duty cycle
regenerator
15
17 LO
13 PC
12 PCX
Q
19 OUTPUT
20 QX
95 9778
Ordering Information
Extended Type Number
U2794B-AFS
U2794B-AFSG3
Rev. A3: 23.08.1995
Package
SSO 20
SSO 20
Remarks
Rail, MOQ 830 pcs.
Tape and reel, MOQ 4000 pcs.
1 (11)

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U2794B-AFSG3 equivalent
TELEFUNKEN Semiconductors
Test Circuit
95 9842
U2794B
1n
W* optional for single ended tests (notice 3 dB bandwidth of AD620)
T1, T2 = transmission line ZO = 50 .
If no GC function is required, connect pin 11 to GND.
For high and low gain status GC’ is to be switched to GND respectively to VS.
Figure 1.
Rev. A3: 23.08.1995
5 (11)


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Part Details

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Featured Datasheets

Part NumberDescriptionMFRS
U2794B-AFSG3The function is 1000 MHz Quadrature Demodulator. TEMIC SemiconductorsTEMIC Semiconductors

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