LTC5593_15 Datasheet, PDF (1/28 Pages) Linear Technology – Dual 2.3GHz to 4.5GHz High Dynamic Range Downconverting Mixer

LTC5593
FEATURES
Dual 2.3GHz to 4.5GHz
High Dynamic Range
Downconverting Mixer
DESCRIPTION
n _{Conversion Gain: 8.5dB at 2500MHz}
n _{IIP3: 27.7dBm at 2500MHz}
n _{Noise Figure: 9.5dB at 2500MHz}
n _{15.9dB NF Under 5dBm Blocking}
n _{High Input P1dB}
n _{52dB Channel Isolation at 2500MHz}
n _{3.3V Supply, 1.3W Power Consumption}
n _{Low Power Mode for 0.8W Consumption}
n _{Independent Channel Shutdown Control}
n _{50Ω Single-Ended RF and LO Inputs}
n _{LO Input Matched In All Modes}
n _{0dBm LO Drive Level}
n _{–40°C to 105°C Operation}
n _{Small QFN (5mm × 5mm) Package and Solution Size}
APPLICATIONS
n _{Wireless Infrastructure Diversity Receivers (LTE, WiMAX)}
n _{Transmit DPD Receivers}
n _{MIMO Infrastructure Receivers}
n _{Broadband Microwave Receivers}
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.
The LTC^®5593 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 LTC5593
is optimized for 2.3GHz to 4.5GHz RF applications. The
LO frequency must fall within the 2.1GHz to 4.2GHz
range for optimum performance. A typical application is
a LTE or WiMAX multichannel or diversity receiver with a
2.3GHz to 2.7GHz RF input.
The LTC5593’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
LTE Diversity Receiver
V_CCIF
3.3V or 5V
RF
2500MHz TO
LNA
2570MHz
RF
2500MHz TO
LNA
2570MHz
V_CCIF
1µF
22pF ^150nH
IFA⁺
IMAGE
BPF 22pF
RFA
1nF
1nF
150nH
IF A^–
IF
AMP
190MHz
190MHz
SAW
BPF
IF
AMP
ADC
V_CCA
BIAS
LO
AMP
22pF
V_CC
1µF 3.3V
ENA
ENA
(0V/3.3V)
1.5pF ^{LO 2345MHz}
LO
SYNTH
IMAGE
BPF 22pF
RFB
LO
AMP
ENB
ENB
IF
AMP
IFB⁺
IF B^–
BIAS
V_CCB
(0V/3.3V)
V_CC
150nH 150nH
22pF
22pF
1nF ^190MHz
190MHz
SAW
BPF
1nF
IF
AMP
ADC
5593 TA01a
Wideband Conversion Gain,
IIP3 and NF vs IF Frequency
(LTC5593 Only, Measured on Evaluation Board)
11.0
10.5
10.0
LO = 2345MHz
P_LO = 0dBm
9.5 ^{RF = 2535 ±35MHz}
TEST CIRCUIT IN FIGURE 1
9.0
8.5 ^GC
28
IIP3 ₂₆
24
22
20
18
8.0
16
7.5
14
7.0
12
6.5
NF ₁₀
6.0
8
155 165 175 185 195 205 215 225
IF OUTPUT FREQUENCY (MHz)
5593 TA01b
5593f
1