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Linear Technology Electronic Components Datasheet

LT5527 Datasheet

400MHz to 3.7GHz 5V High Signal Level Downconverting Mixer

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LT5527 pdf
FEATURES
n 50Ω Single-Ended RF and LO Ports
n Wide RF Frequency Range: 400MHz to 3.7GHz*
n High Input IP3: 24.5dBm at 900MHz
23.5dBm at 1900MHz
n Conversion Gain: 3.2dB at 900MHz
2.3dB at 1900MHz
n Integrated LO Buffer: Low LO Drive Level
n High LO-RF and LO-IF Isolation
n Low Noise Figure: 11.6dB at 900MHz
12.5dB at 1900MHz
n Very Few External Components
n Enable Function
n 4.5V to 5.25V Supply Voltage Range
n 16-Lead (4mm × 4mm) QFN Package
APPLICATIONS
n Cellular, WCDMA, TD-SCDMA and UMTS
Infrastructure
n GSM900/GSM1800/GSM1900 Infrastructure
n 900MHz/2.4GHz/3.5GHz WLAN
n MMDS, WiMAX
n High Linearity Downmixer Applications
LT5527www.DataSheet4U.com
400MHz to 3.7GHz
5V High Signal Level
Downconverting Mixer
DESCRIPTION
The LT®5527 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 amplifiers, or is
easily matched to drive 50Ω single-ended, with or without
an external transformer.
The RF input is internally matched to 50Ω from 1.7GHz
to 3GHz, and the LO input is internally matched to 50Ω
from 1.2GHz 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 LT5527’s high level of integration minimizes the total
solution cost, board space and system-level variation.
L, 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.
TYPICAL APPLICATION
High Signal Level Downmixer for Multi-Carrier Wireless Infrastructure
LO INPUT
–3dBm (TYP)
LT5527
RF
INPUT
RF
BIAS
GND EN VCC2 VCC1
1nF
4.7pF
IF+ 100nH
1nF
220nH
4.7pF
IF
100nH
5V
1μF
5527 TA01a
IF
OUTPUT
240MHz
1.9GHz Conversion Gain, IIP3, SSB NF and
LO-RF Leakage vs LO Power
24
22 IIP3
20
18
16
14
12 SSB NF
10
8
6
4 GC
2
–9
–7
–20
–25
IF = 240MHz
LOW SIDE LO
TA = 25°C
VCC = 5V
–30
–35
–40
–45
–50
–55
LO-RF –60
–65
–70
–5 –3 –1
LO POWER (dBm)
–75
13
5527 TA01b
5527fa
1


Linear Technology Electronic Components Datasheet

LT5527 Datasheet

400MHz to 3.7GHz 5V High Signal Level Downconverting Mixer

No Preview Available !

LT5527 pdf
LT5527
www.DataSheet4U.com
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (VCC1, VCC2, IF+, IF–).......................5.5V
Enable Voltage ................................ –0.3V to VCC + 0.3V
LO Input Power (380MHz to 4GHz)......................10dBm
LO Input DC Voltage ..............................–1V to VCC + 1V
Continuous RF Input Power
(400MHz to 4GHz) ...............................................12dBm
RF Input Power (400MHz to 4GHz)......................15dBm
RF Input DC Voltage...............................................±0.1V
Operating Temperature Range ................ –40°C to 85°C
Storage Temperature Range................... –65°C to 125°C
Junction Temperature (TJ) ................................... 125°C
PIN CONFIGURATION
TOP VIEW
16 15 14 13
NC 1
NC 2
RF 3
12 GND
11 IF+
17 10 IF
NC 4
9 GND
5678
UF PACKAGE
16-LEAD (4mm s 4mm) PLASTIC QFN
TJMAX = 125°C, θJA = 37°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LT5527EUF#PBF
LT5527EUF#TRPBF
5527
16-Lead (4mm × 4mm) Plastic QFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
DC ELECTRICAL CHARACTERISTICS VCC = 5V, EN = High, TA = 25°C, unless otherwise specified. Test
circuit shown in Figure 1. (Note 3)
PARAMETER
Power Supply Requirements (VCC)
Supply Voltage
CONDITIONS
MIN TYP MAX UNITS
4.5 5 5.25 VDC
Supply Current
VCC1 (Pin 7)
VIFC+C+2
(Pin 6)
IF(Pin
11
+
Pin
10)
Total Supply Current
Enable (EN) Low = Off, High = On
Shutdown Current
Input High Voltage (On)
Input Low Voltage (Off)
EN = Low
23.2
2.8
52 60
78 88
100
3
0.3
mA
mA
mA
mA
μA
VDC
VDC
EN Pin Input Current
Turn-ON Time
Turn-OFF Time
EN = 5VDC
50 90
3
3
μA
μs
μs
AC ELECTRICAL CHARACTERISTICS Test circuit shown in Figure 1. (Notes 2, 3)
PARAMETER
CONDITIONS
MIN TYP
RF Input Frequency Range
LO Input Frequency Range
IF Output Frequency Range
No External Matching (Midband)
With External Matching (Low Band or High Band)
No External Matching
With External Matching
Requires Appropriate IF Matching
1700 to 3000
400
1200 to 3500
380
0.1 to 600
MAX
3700
2
UNITS
MHz
MHz
MHz
MHz
MHz
5527fa


Part Number LT5527
Description 400MHz to 3.7GHz 5V High Signal Level Downconverting Mixer
Maker Linear Technology
Total Page 16 Pages
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