LTC5591
Dual 1.3GHz to 2.3GHz
High Dynamic Range
Downconverting Mixer
FeaTures
DescripTion
The LTC®5591 is part of a family of dual-channel high dy-
namic range, high gain downconverting mixers covering
the 600MHz to 4.5GHz RF frequency range. The LTC5591
is optimized for 1.3GHz to 2.3GHz RF applications. The
LO frequency must fall within the 1.4GHz to 2.1GHz
range for optimum performance. A typical application is
a LTE or W-CDMA multichannel or diversity receiver with
a 1.7GHz to 2.2GHz RF input and low side LO.
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Conversion Gain: 8.5dB at 1950MHz
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IIP3: 26.2dBm at 1950MHz
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Noise Figure: 9.9dB at 1950MHz
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15.5dB NF Under 5dBm Blocking
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High Input P1dB
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47dB Channel-to-Channel Isolation
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1.25W Power Consumption at 3.3V
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Low Power Mode: <800mW Consumption
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Independent Channel Shutdown Control
The LTC5591’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
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50Ω Single-Ended RF and LO Inputs
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LO Input Matched In All Modes
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0dBm LO Drive Level
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Small Package and Solution Size
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–40°C to 105°C Operation
applicaTions
PART NUMBER
LTC5590
RF RANGE
LO RANGE
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600MHz to 1.7GHz
1.3GHz to 2.3GHz
1.6GHz to 2.7GHz
2.3GHz to 4.5GHz
700MHz to 1.5GHz
1.4GHz to 2.1GHz
1.7GHz to 2.5GHz
2.1GHz to 4.2GHz
3G/4G Wireless Infrastructure Diversity Receivers
LTC5591
(LTE, W-CDMA, TD-SCDMA, UMTS, GSM1800)
n
LTC5592
Remote Radio Unit
MIMO Multichannel Receivers
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LTC5593
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
Wideband Conversion Gain,
IIP3 and NF vs IF Frequency
(Mixer Only, Measured on
Evaluation Board)
190MHz
SAW
190MHz
BPF
1nF
V
IF
CCIF
3.3V or 5V
1nF
150nH
ADC
AMP
150nH
22pF
1µF
V
3.3V
28
26
24
22
CC
11.0
10.5
10.0
22pF
1µF
V
+
–
IFA
CCA
IIP3
IFA
LO = 1760MHz
IF
AMP
IMAGE
P
= 0dBm
LO
BIAS
ENA
LO
ENA
(0V/3.3V)
BPF 2.7pF
RF = 1950 30MHz
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
RF
RFA
TEST CIRCUIT IN FIGURE 1
1920MHz TO
1980MHz
LNA
LNA
20
18
LO
LO 1760MHz
4.7pF
AMP
G
C
SYNTH
16
14
12
10
8
IMAGE
BPF 2.7pF
LO
AMP
RF
1920MHz TO
1980MHz
RFB
NF
ENB
ENB
(0V/3.3V)
IF
BIAS
V
AMP
+
–
IFB
160
170
180
190
200
210
220
IFB
CCB
IF OUTPUT FREQUENCY (MHz)
V
CC
V
CCIF
5591 TA01b
22pF
150nH
150nH
1nF
190MHz
SAW
190MHz
BPF
1nF
22pF
IF
AMP
ADC
5591 TA01a
5591f
1