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參數資料
| 型號： | U2797B-AFS |
| 英文描述： | 1000-MHz Quadrature Modulator |
| 中文描述： | 1000 - MHz的正交調制器 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 255K |
| 代理商： | U2797B-AFS |
TELEFUNKEN Semiconductors
U2797B
Rev. A1: 06.09.1995
1 (13)
1000-MHz Quadrature Modulator
Description
The IC U2797B is a 1000-MHz quadrature modulator that
uses TELEFUNKEN’s advanced UHF process. It features
a frequency range from 100 MHz up to 1000 MHz, low
current consumption, and single-ended RF and LO ports.
The I/Q input impedance is about 150 k . Adjustment
free application makes the direct converter suitable for all
digital radio systems up to 1000 MHz, e.g., GSM,
DAMPS, PDC.
Features
Supply voltage: 5 V (typical)
Low power consumption: 30 mA / 5 V (typical at
–1 dBm output level)
150 k I/Q input impedance
Excellent sideband suppression by means of duty
cycle regeneration of the LO input signal
Phase control loop for precise 90
°
phase shifting
Power down mode
Low LO input level: –10 dBm (typical)
50- single-ended LO and RF port
LO- frequency range of 100 MHz to 1 GHz
SSO 20 package
Benefits
Extended talk time due to increased battery life
Few external components result in cost and board
space saving
Adjustment-free hence saves time
Block Diagram
Frequency
doubler
Duty cycle
regenerator
0
90
90 control
loop
M
Power
down
1
8
5,6
13
V
S
V
Ref
4
2, 3, 15, 16, 17, 18
GND
10
9
14
19
20
11
12
94 8185 e
BB
Ai
BB
Ai
LO
i
BB
BB
Bi
Bi
S
PD
RF
o
°
°
PD
Phase adj.
7
Ordeing Information
Extended Type Number
U2797B-AFS
U2797B-AFSG3
Package
SSO20
SSO20
Remarks
Rail, MOQ 830 pcs.
Tape & reel, MOQ 4000 pcs.
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相關代理商/技術參數 |
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| U2797B-AFSG3 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:1000-MHz Quadrature Modulator |
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