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參數資料
| 型號： | U2794B |
| 英文描述： | 1000 MHz Quadrature Demodulator |
| 中文描述： | 1000兆赫正交解調器 |
| 文件頁數： | 10/11頁 |
| 文件大小： | 258K |
| 代理商： | U2794B |
TELEFUNKEN Semiconductors
U2794B
Rev. A3: 23.08.1995
10 (11)
Description of Evaluation Board
Board material:
epoxy; r = 4.8, thickness = 0.5 mm
transmission lines: Z
O
= 50
The board offers the following functions
The test circuit for the U2794B:
–
The supply voltage and the control inputs GC, PC and
PD are connected via a plug strip. The control input
voltages can be generated via external potentiome-
ters; then the inputs should be ac–grounded (time
requirements in burst–mode for power up have to be
considered).
–
The outputs I, IX, Q, QX are dc coupled via an plug
strip or can be ac-connected via SMB plugs for high
frequency tests e.g. noise figure or s-parameter mea-
surement. The pins II, IIX, QQ, QQX allow user
definable filtering with 2 external capacitors CII,
CQQ.
–
Also the offsets of both channels can be adjusted with
two potis or resistors.
–
The LO- and the RF-inputs are ac–coupled and
connected via SMB plugs. If transmission line T3 is
connected to the RF-input and ac-grounded at the
other end, gain and noise performance can be
improved (input matching to 50 ).
–
The complementary RF-input is ac-coupled to GND
(CRFX = 1 nF), the same appears to the complemen-
tary LO-input (CNLO = 1 nF).
A calibration part, which allows to calibrate an
s-parameter analyzer directly to the in- and output-
signal ports of the U2794B.
For single-ended measurements at the demodulator
outputs, two OP’s (e.g., AD620 or other) can be con-
figured with programmable gain; together with an
output-divider network RD = 450
direct measurements with 50
possible at frequencies
100 kHz.
to RL = 50 ,
load-impedances are
Dimensions in mm
Package: SSO 20
94 8872
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| U2794B_08 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:1000-MHz Quadrature Demodulator |
| U2794B-AFS | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:1000 MHz Quadrature Demodulator |
| U2794B-AFSG3 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:1000 MHz Quadrature Demodulator |
| U2794B-MFS | 功能描述:IC QUADRATR DEMOD 1000MHZ 20SSOP RoHS:否 類別:RF/IF 和 RFID >> RF 解調器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:解調器 LO 頻率:- RF 頻率:70MHz ~ 300MHz P1dB:-9dBm 增益:- 噪音數據:6.36dB 電流 - 電源:41.5mA 電源電壓:2.7 V 封裝/外殼:28-WFQFN 裸露焊盤 供應商設備封裝:28-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| U2794B-MFSG3 | 功能描述:IC DEMODULATR QUAD 1K MHZ 20SOIC RoHS:是 類別:RF/IF 和 RFID >> RF 解調器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:解調器 LO 頻率:- RF 頻率:70MHz ~ 300MHz P1dB:-9dBm 增益:- 噪音數據:6.36dB 電流 - 電源:41.5mA 電源電壓:2.7 V 封裝/外殼:28-WFQFN 裸露焊盤 供應商設備封裝:28-TQFN-EP（5x5） 包裝:帶卷 (TR) |
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