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LT5557

Description
Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer
File Size404KB,21 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LT5557 Overview

Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer

Electrical Specifications Subject to Change
FeaTures
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LTC5590
Dual 600MHz to 1.7GHz
High Dynamic Range
Downconverting Mixer
DescripTion
The LTC
®
5590 is part of a family of dual-channel high dy-
namic range, high gain downconverting mixers covering
the 600MHz to 4GHz RF frequency range.
The LTC5590
is optimized for 600MHz to 1.7GHz RF applications. The
LO frequency must fall within the 700MHz to 1.5GHz
range for optimum performance.
A typical application
is a LTE or GSM receiver with a 700MHz to 915MHz RF
input and high side LO.
The LTC5590’s high conversion gain and high dynamic
range enable the use of lossy IF filters in high selectivity
receiver designs, while minimizing the total solution cost,
board space and system-level variation. A low current
mode is provided for additional power savings and each
of the mixer channels has independent shutdown control.
High Dynamic Range Dual Downconverting Mixer Family
PART NUMBER
LTC5590
LTC5591
LTC5592
LTC5593
RF RANGE
600MHz to 1.7GHz
1.3GHz to 2.3GHz
1.6GHz to 2.7GHz
2.3GHz to 4GHz
LO RANGE
700MHz to 1.5GHz
1.4GHz to 2.1GHz
1.7GHz to 2.5GHz
2.4GHz to 3.6GHz
Conversion Gain: 8.7dB at 900MHz
IIP3: 26dBm at 900MHz
Noise Figure: 9.7dB at 900MHz
15.6dB NF Under 5dBm Blocking
High Input P1dB; 14.1dBm at 5V
53dB Channel-to-Channel Isolation
1.25W Power Consumption at 3.3V
Low Current Mode for <800mW Consumption
Enable Pins for Each Channel
50Ω Single-Ended RF and LO Inputs
LO Input Matched In All Modes
0dBm LO Drive Level
Small Package and Solution Size
–40°C to 105°C Operation
applicaTions
n
n
n
3G/4G Wireless Infrastructure Diversity Receivers
(LTE, CDMA, GSM)
MIMO Infrastructure Receivers
High Dynamic Range Downmixer Applications
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.
Typical applicaTion
Wideband Receiver
1nF
V
CCIF
3.3V or 5V
200mA
150nH
1nF
150nH
190MHz
SAW
IF
AMP
190MHz
BPF
ADC
V
CC
3.3V
1µF 180mA
GAIN (dB), NF (dB)
13
12
11
IIP3
1µF
22pF
Wideband Conversion Gain
NF and IIP3 vs IF Frequency
(Mixer Only, Measured on
Evaluation Board)
27
26
25
NF
24
23
G
C
T
C
= 25°C
LO = 1090MHz
RF = 900 ±30MHz
TEST CIRCUIT IN FIGURE 1
170
180
200
190
IF FREQUENCY (MHz)
210
22
21
20
19
220
IIP3 (dBm)
IFA
+
RF
700MHz TO
915MHz
IMAGE
BPF 100pF
LNA
RFA
IF
AMP
IFA
V
CCA
BIAS
LO
AMP
ENA
22pF
ENA
(0V/3.3V)
10pF
10
9
8
7
LO 1090MHz
SYNTH
LO
RF
700MHz TO
915MHz
IMAGE
BPF 100pF
LNA
RFB
IF
AMP
LO
AMP
ENB
BIAS
IFB
V
CCB
22pF
1nF 190MHz
SAW
IF
AMP
190MHz
BPF
ADC
5590 TA01a
ENB
(0V/3.3V)
6
IFB
+
V
CCIF
150nH
5
160
150nH
V
CC
5590 TA01b
22pF
1nF
5590p
1

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Description Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer
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