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LTC5567

Description
300mhz to 4ghz active downconverting mixer with wideband IF
CategoryTopical application    Wireless rf/communication   
File Size348KB,20 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Compare View All

LTC5567 Overview

300mhz to 4ghz active downconverting mixer with wideband IF

LTC5567
300MHz to 4GHz Active
Downconverting Mixer with
Wideband IF
FeaTures
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DescripTion
The LTC
®
5567 is optimized for RF downconverting mixer
applications that require wide IF bandwidth. The part is
also a pin-compatible upgrade to the LT5557 active mixer,
offering higher linearity and 1dB compression, wider
bandwidth, and lower output spurious levels. Integrated
RF and LO transformers and LO buffer amplifiers allow a
very compact solution.
The RF input is 50Ω matched from 1.4GHz to 3GHz, and
easily matched for higher or lower RF frequencies with
simple external matching. The LO input is 50Ω matched
from 1GHz to 4GHz, even when the IC is disabled. The LO
input is easily matched for higher or lower frequencies, as
low as 300MHz, with simple external matching. The low
capacitance differential IF output is usable up to 2.5GHz.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
High IIP3: +26.9dBm at 1950MHz
1.9dB Conversion Gain
Low Noise Figure: 11.8dB at 1950MHz
16.5dB NF Under 5dBm Blocking
Low Power: 294mW
Wide IF Frequency Range Up to 2.5GHz
LO Input 50Ω Matched when Shutdown
–40°C to 105°C Operation (T
C
)
Very Small Solution Size
Pin Compatible with LT5557
16-Lead (4mm
×
4mm) QFN package
applicaTions
n
n
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Wireless Infrastructure Receivers
DPD Observation Receivers
CATV Infrastructure
Typical applicaTion
DPD Observation Receiver Mixer with 500MHz IF Bandwidth and
+13dBm Input P1dB into 200Ω Load
LO
1.65GHz
0dBm
LTC5567
3.9pF
330pF
IF
+
249
390nH
100
IF
AMP
RF
IF
IADJ
249
390nH
100
200
LOAD
G
V
(dB), IIP3 (dBm), SSB NF (dB)
LO
28
26
24
22
20
18
16
14
12
10
8
6
4
G
V
40 90 140 190 240 290 340 390 440 490 540 590
IF FREQUENCY (MHz)
5567
TA01b
Voltage Conversion Gain, IIP3
and NF vs IF Frequency
IIP3
RF = 1.69GHz TO 2.24GHz
LO = 1.65GHz
Z
RF
= 50
Z
IF
= 200 DIFFERENTIAL
T
C
= 25°C
NF
RF
1.69GHz
TO
2.24GHz
2.7pF
RF
LO
EN
EN
BIAS
V
CC
10nF
330pF
10nF
3.3V
89mA
5567 TA01a
5567f
1

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