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LT5557EUF#TR

Description
IC SPECIALTY TELECOM CIRCUIT, PQCC16, 4 X 4 MM, PLASTIC, MO-220, QFN-20, Telecom IC:Other
CategoryWireless rf/communication    Telecom circuit   
File Size232KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric View All

LT5557EUF#TR Overview

IC SPECIALTY TELECOM CIRCUIT, PQCC16, 4 X 4 MM, PLASTIC, MO-220, QFN-20, Telecom IC:Other

LT5557EUF#TR Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeQFN
package instructionHVQCCN,
Contacts20
Reach Compliance Code_compli
ECCN codeEAR99
JESD-30 codeS-PQCC-N16
JESD-609 codee0
length4 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeHVQCCN
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height0.8 mm
Nominal supply voltage3.3 V
surface mountYES
Telecom integrated circuit typesTELECOM CIRCUIT
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formNO LEAD
Terminal pitch0.65 mm
Terminal locationQUAD
Maximum time at peak reflow temperature20
width4 mm
LT5557
400MHz to 3.8GHz
3.3V High Signal Level
Downconverting Mixer
FEATURES
DESCRIPTIO
3.3V Operation for Reduced Power
50
Ω
Single-Ended RF and LO Ports
Wide RF Frequency Range: 400MHz to 3.8GHz*
High Input IP3: 25.6dBm at 900MHz
24.7dBm at 1950MHz
23.7dBm at 2.6GHz
Conversion Gain: 3.3dB at 900MHz
2.9dB at 1950MHz
–3dBm LO Drive Level
Low LO Leakage
Low Noise Figure: 10.6dB at 900MHz
11.7dB at 1950MHz
Very Few External Components
16-Lead (4mm
×
4mm) QFN Package
The LT
®
5557 active mixer is optimized for high linearity,
wide dynamic range downconverter applications. The IC
includes a high speed differential LO buffer amplifier
driving a double-balanced mixer. Broadband, integrated
transformers on the RF and LO inputs provide single-
ended 50Ω interfaces. The differential IF output allows
convenient interfacing to differential IF filters and amplifi-
ers, or is easily matched to drive a single-ended 50Ω load,
with or without an external transformer.
The RF input is internally matched to 50Ω from 1.6GHz to
2.3GHz, and the LO input is internally matched to 50Ω
from 1GHz to 5GHz. The frequency range of both ports is
easily extended with simple external matching. The IF
output is partially matched and usable for IF frequencies
up to 600MHz.
The LT5557’s high level of integration minimizes the total
solution cost, board space and system-level variation.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
*Operation over a wider frequency range is possible with reduced performance. Consult factory for
information and assistance.
APPLICATIO S
Cellular, CDMA, WCDMA, TD-SCDMA and UMTS
Infrastructure
WiMAX
Wireless Infrastructure Receiver
Wireless Infrastructure PA Linearization
900MHz/2.4GHz/3.5GHz WLAN
TYPICAL APPLICATIO
LO INPUT
–3dBm (TYP)
LT5557
High Signal Level Downmixer for Multi-Carrier Wireless Infrastructure
Conversion Gain, IIP3, SSB NF and
LO Leakage vs RF Frequency
26
24
22
IIP3
LOW-SIDE LO
IF = 240MHz
P
LO
= –3dBm
TA = 25°C
V
CC
= 3.3V
SSB NF
40
LO-IF
LO-RF
G
C
1800
2100
2000
1900
RF FREQUENCY (MHz)
2200
50
60
10
0
G
C
(dB), NF (dB), IIP3 (dBm)
20
18
16
14
12
10
8
6
4
4.7pF
IF
+
100nH
1nF
150nH
RF
INPUT
RF
BIAS
GND
EN
V
CC2
V
CC1
1nF
IF
100nH
3.3V
1μF
5557 TA01a
4.7pF
IF
OUTPUT
240MHz
2
1700
U
LO LEAKAGE (dBm)
20
30
5557 TA01b
U
U
5557fa
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