Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LT5527 Datasheet(PDF) 9 Page - Linear Technology

Part # LT5527
Description  400MHz to 3.7GHz 5V High Signal Level
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT5527 Datasheet(HTML) 9 Page - Linear Technology

Back Button LT5527 Datasheet HTML 5Page - Linear Technology LT5527 Datasheet HTML 6Page - Linear Technology LT5527 Datasheet HTML 7Page - Linear Technology LT5527 Datasheet HTML 8Page - Linear Technology LT5527 Datasheet HTML 9Page - Linear Technology LT5527 Datasheet HTML 10Page - Linear Technology LT5527 Datasheet HTML 11Page - Linear Technology LT5527 Datasheet HTML 12Page - Linear Technology LT5527 Datasheet HTML 13Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 16 page
background image
LT5527
9
5527fa
APPLICATIONS INFORMATION
Introduction
The LT5527 consists of a high linearity double-balanced
mixer, RF buffer amplifier, high speed limiting LO buffer
amplifier and bias/enable circuits. The RF and LO inputs
are both single ended. The IF output is differential. Low
side or high side LO injection can be used.
Two evaluation circuits are available. The standard evalua-
tion circuit, shown in Figure 1, incorporates transformer-
based IF matching and is intended for applications that
require the lowest LO-IF leakage levels and the widest
IF bandwidth. The second evaluation circuit, shown in
Figure 2, replaces the IF transformer with a discrete IF
balun for reduced solution cost and size. The discrete
IF balun delivers comparable noise figure and linearity,
higher conversion gain, but degraded LO-IF leakage and
reduced IF bandwidth.
RF Input Port
The mixer’s RF input, shown in Figure 3, consists of an
integrated transformer and a high linearity differential
amplifier. The primary terminals of the transformer are
connected to the RF input pin (Pin 3) and ground. The
secondary side of the transformer is internally connected
to the amplifier’s differential inputs.
One terminal of the transformer’s primary is internally
grounded. If the RF source has DC voltage present, then
a coupling capacitor must be used in series with the RF
input pin.
The RF input is internally matched from 1.7GHz to 3GHz,
requiring no external components over this frequency
range. The input return loss, shown in Figure 4a, is typi-
cally 10dB at the band edges. The input match at the lower
band edge can be optimized with a series 2.7pF capacitor
at Pin 3, which improves the 1.7GHz return loss to greater
than 20dB. Likewise, the 2.7GHz match can be improved
to greater than 30dB with a series 1.5nH inductor. A series
1.5nH/2.7pF network will simultaneously optimize the lower
and upper band edges and expand the RF input bandwidth
to 1.1GHz-3.3GHz. Measured RF input return losses for
these three cases are also plotted in Figure 4a.
Alternatively, the input match can be shifted down, as low
as 400MHz or up to 3700MHz, by adding a shunt capacitor
(C5) to the RF input. A 450MHz input match is realized with
C5 = 12pF, located 4.5mm away from Pin 3 on the evaluation
board’s 50Ω input transmission line. A 900MHz input match
requires C5 = 3.9pF, located at 1.3mm. A 3500MHz input
match is realized with C5 = 0.5pF, located at 4.5mm. This
Figure 3. RF Input Schematic
Figure 4. RF Input Return Loss With
and Without External Matching
(4b) Series Shunt Matching
(4a) Series Reactance Matching
RFIN
ZO = 50Ω
L = L (mm)
C5
RF
5527 F03
EXTERNAL MATCHING
FOR LOW BAND OR
HIGH BAND ONLY
TO
MIXER
3
FREQUENCY (GHz)
0.2
–30
–25
–20
–15
–10
1.2
2.2
3.2
4.2
5527 F04a
–5
0
0.7
1.7
2.7
3.7
SERIES 1.5nH
SERIES 2.7pF
NO EXTERNAL
MATCHING
SERIES 1.5nH
SERIES 2.7pF
RF FREQUENCY (GHz)
0.2
–30
–25
–20
–15
–10
1.2
2.2
3.2
4.2
5527 F04b
–5
0
0.7
1.7
2.7
3.7
NO EXTERNAL
MATCHING
900MHz
C5 = 3.9pF
L = 1.3mm
450MHz
C5 = 12pF
L = 4.5mm
3.5GHz
C5 = 0.5pF
L = 4.5mm


Similar Part No. - LT5527

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LT5527 LINER-LT5527 Datasheet
307Kb / 16P
   800MHz to 2.7GHz High Linearity Direct Conversion Quadrature Demodulator
LT5527 LINER-LT5527 Datasheet
197Kb / 16P
   400MHz to 3.7GHz 5V High Signal Level Downconverting Mixer
LT5527 LINER-LT5527 Datasheet
355Kb / 20P
   Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer
LT5527 LINER-LT5527 Datasheet
644Kb / 34P
   Dual 14-Bit 250Msps
LT5527 LINER-LT5527 Datasheet
1,000Kb / 36P
   300MHz Digital Predistortion Receiver
More results

Similar Description - LT5527

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LT5527 LINER-LT5527_15 Datasheet
208Kb / 16P
   400MHz to 3.7GHz 5V High Signal Level Downconverting Mixer
LT5527 LINER-LT5527 Datasheet
197Kb / 16P
   400MHz to 3.7GHz 5V High Signal Level Downconverting Mixer
LT5522 LINER-LT5522_15 Datasheet
267Kb / 16P
   400MHz to 2.7GHz High Signal Level Downconverting Mixer
LT5522 LINER-LT5522 Datasheet
261Kb / 16P
   400MHz to 2.7GHz High Signal Level Downconverting Mixer
LT5557 LINER-LT5557 Datasheet
236Kb / 16P
   400MHz to 3.8GHz 3.3V High Signal Level Downconverting Mixer
logo
Micrel Semiconductor
SY89429V MICREL-SY89429V Datasheet
138Kb / 9P
   5V/3.3V PROGRAMMABLE FREQUENCY SYNTHESIZER 25MHz to 400MHz
SY89429V MICREL-SY89429V_06 Datasheet
609Kb / 10P
   5V/3.3V PROGRAMMABLE FREQUENCY SYNTHESIZER (25MHz to 400MHz)
logo
ON Semiconductor
ENA1771B ONSEMI-ENA1771B Datasheet
370Kb / 7P
   Oscillator, 5V, 6.4dBm@400MHz, SCH6
August, 2013
logo
Toshiba Semiconductor
TIM3742-12UL TOSHIBA-TIM3742-12UL_09 Datasheet
144Kb / 4P
   HIGH POWER P1dB=41.5dBm at 3.7GHz to 4.2GHz
TIM3742-16UL TOSHIBA-TIM3742-16UL Datasheet
51Kb / 4P
   HIGH POWER P1dB=42.5dBm at 3.7GHz to 4.2GHz
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com