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LTC5585IUF#PBF

Description
IC DEMOD WIDEBAND IQ 3GHZ 24 QFN
CategoryWireless rf/communication    Telecom circuit   
File Size1MB,38 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC5585IUF#PBF Overview

IC DEMOD WIDEBAND IQ 3GHZ 24 QFN

LTC5585IUF#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeQFN
package instructionHVQCCN, LCC24,.16SQ,20
Contacts24
Manufacturer packaging codeUF
Reach Compliance Codecompliant
ECCN codeEAR99
JESD-30 codeS-PQCC-N24
JESD-609 codee3
length4 mm
Humidity sensitivity level1
Number of functions1
Number of terminals24
Maximum operating temperature105 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeHVQCCN
Encapsulate equivalent codeLCC24,.16SQ,20
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply5 V
Certification statusNot Qualified
Maximum seat height0.8 mm
Maximum slew rate0.22 mA
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Telecom integrated circuit typesMODEM-DEMODULATOR
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperatureNOT SPECIFIED
width4 mm
Base Number Matches1
FEATURES
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LTC5585
Wideband IQ Demodulator
with IIP2 and DC Offset
Control
DESCRIPTION
The
LTC
®
5585
is a direct conversion quadrature demodu-
lator optimized for high linearity receiver applications in
the 400MHz to 4GHz frequency range. It is suitable for
communications receivers where an RF signal is directly
converted into I and Q baseband signals with bandwidth
of 530MHz or higher. The LTC5585 incorporates balanced
I and Q mixers, LO buffer amplifiers and a precision, high
frequency quadrature phase shifter. The integrated on-chip
broadband transformer provides a single-ended interface
at the RF input with simple off-chip L-C matching. In ad-
dition, the LTC5585 provides four analog control voltage
interface pins for IIP2 and DC offset correction, greatly
simplifying system calibration.
The high linearity of the LTC5585 provides excellent spur-
free dynamic range for the receiver. This direct conversion
demodulator can eliminate the need for intermediate fre-
quency (IF) signal processing, as well as the corresponding
requirements for image filtering and IF filtering. These
I/Q outputs can interface directly to channel-select filters
(LPFs) or to baseband amplifiers.
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.
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400MHz to 4GHz Operating Frequency
High IIP3: 28.7dBm at 700MHz, 25.7dBm at 1.95GHz
High IIP2: 70dBm at 700MHz, 60dBm at 1.95GHz
User Adjustable IIP2 Up to 80dBm
User Adjustable DC Offset Null
High Input P1dB: 16dBm at 1950MHz
I/Q Bandwidth of 530MHz or Higher
Image Rejection: 43dB at 1950MHz
Noise Figure: 13.5dB at 700MHz
12.7dB at 1.95GHz
Conversion Gain: 2.0dB at 700MHz
2.4dB at 1.95GHz
Single-Ended RF with On-Chip Transformer
Shutdown Mode
Operating Temperature Range (T
C
): –40°C to 105°C
24-Lead 4mm
×
4mm QFN Package
APPLICATIONS
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LTE/W-CDMA/TD-SCDMA Base Station Receivers
Wideband DPD Receivers
Point-To-Point Broadband Radios
High Linearity Direct Conversion I/Q Receivers
Image Rejection Receivers
TYPICAL APPLICATION
Direct Conversion Receiver with IIP2 and DC Offset Calibration
5V
BPF
LNA
BPF
RF
INPUT RF
V
CC
I
+
I
LPF
VGA
A/D
IIP2 vs IP2I, IP2Q Trim Voltage
120
110
100
I, –40°C
I, 25°C
I, 85°C
I, 105°C
Q, –40°C
Q, 25°C
Q, 85°C
Q, 105°C
f
RF
= 700MHz
IP2 AND DC
OFFSET CAL
LO
90°
LTC5585
IP2 ADJUST
DC OFFSET
D/A
D/A
IIP2 (dBm)
90
80
70
60
LO INPUT
IP2 AND DC
OFFSET CAL
DC OFFSET
IP2 ADJUST
D/A
D/A
Q
+
Q
LPF
VGA
A/D
5585 TA01a
50
40
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
IP2I, IP2Q (V)
5585 G09
ENABLE
EN
5585fb
For more information
www.linear.com/LTC5585
1

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