LTC5590_15 Datasheet, PDF (1/20 Pages) Linear Technology – Dual 600MHz to 1.7GHz High Dynamic Range Downconverting Mixer

FEATURES
n _{Conversion Gain: 8.7dB at 900MHz}
n _{IIP3: 26dBm at 900MHz}
n _{Noise Figure: 9.7dB at 900MHz}
n _{15.6dB NF Under 5dBm Blocking}
n _{High Input P1dB}
n _{53dB Channel Isolation at 900MHz}
n _{1.3W Power Consumption at 3.3V}
n _{Low Power Mode for <0.8W Consumption}
n _{Enable Pins for Each Channel}
n _{50Ω Single-Ended RF and LO Inputs}
n _{LO Input Matched In All Modes}
n _{0dBm LO Drive Level}
n _{Small Package and Solution Size}
n _{–40°C to 105°C Operation}
APPLICATIONS
n _{3G/4G Wireless Infrastructure Diversity Receivers}
(LTE, CDMA, GSM)
n _{MIMO Infrastructure Receivers}
n _{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.
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 4.5GHz 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
RF RANGE
LO RANGE
LTC5590
600MHz to 1.7GHz 700MHz to 1.5GHz
LTC5591
1.3GHz to 2.3GHz
1.4GHz to 2.1GHz
LTC5592
1.6GHz to 2.7GHz
1.7GHz to 2.5GHz
LTC5593
2.3GHz to 4.5GHz
2.1GHz to 4.2GHz
TYPICAL APPLICATION
Wideband Receiver
1nF
190MHz
SAW
190MHz
BPF
V_CCIF
1nF
IF
3.3V or 5V
1μF
22pF ^{150nH 150nH}
AMP
ADC
RF
700MHz TO
LNA
915MHz
RF
700MHz TO
LNA
915MHz
V_CCIF
IFA⁺
IF A^–
IMAGE
IF
BPF 100pF
AMP
RFA
V_CCA
BIAS
LO
AMP
V_CC
22pF
1μF ^3.3V
ENA
ENA
(0V/3.3V)
10pF ^{LO 1090MHz}
LO
SYNTH
IMAGE
BPF 100pF
RFB
IFB⁺
150nH
22pF
LO
AMP
IF
AMP
IF B^–
ENB
BIAS
V_CCB
ENB
(0V/3.3V)
150nH
V_CC
22pF
1nF ^190MHz
190MHz
SAW
BPF
1nF
IF
AMP
ADC
5590 TA01a
Wideband Conversion Gain
NF and IIP3 vs IF Frequency
(Mixer Only, Measured on
Evaluation Board)
13
27
IIP3
12
26
11
25
10
NF
24
9
23
8
G_C
22
7 _{LO = 1090MHz}
6
P_LO = 0dBm
RF = 900 ±30MHz
TEST CIRCUIT IN FIGURE 1
5
160 170 180 190 200 210
IF FREQUENCY (MHz)
21
20
19
220
5590 TA01b
5590f
1