LTC5540IUH#PBF Linear Technology, LTC5540IUH#PBF Datasheet

IC, DOWN CONVERTING MIXER 1.3GHZ, QFN-20

LTC5540IUH#PBF

Manufacturer Part Number
LTC5540IUH#PBF
Description
IC, DOWN CONVERTING MIXER 1.3GHZ, QFN-20
Manufacturer
Linear Technology
Datasheet

Specifications of LTC5540IUH#PBF

Frequency Range
600MHz To 1.3GHz
Supply Voltage Range
3.1V To 3.5V
Rf Ic Case Style
QFN
No. Of Pins
20
Operating Temperature Range
-40°C To +85°C
Rf Type
GSM, LTE, WCDMA, WiMax
Operating Supply Voltage
3.3V
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC5540IUH#PBFLTC5540IUH
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC5540IUH#PBFLTC5540IUH
Manufacturer:
LTNEAR
Quantity:
20 000
Company:
Part Number:
LTC5540IUH#PBF
Manufacturer:
LT
Quantity:
1 540
Company:
Part Number:
LTC5540IUH#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
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applicaTions
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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.
Typical applicaTion
FeaTures
700MHz
915MHz
3.3V or 5V
Conversion Gain: 7.9dB at 900MHz
IIP3: 25.9dBm at 900MHz
Noise Figure: 9.9dB at 900MHz
16.2dB NF Under +5dBm Blocking
High Input P1dB
3.3V Supply, 640mW Power Consumption
Shutdown Pin
50Ω Single-Ended RF and LO Inputs
LO Inputs 50Ω Matched when Shutdown
High Isolation LO Switch
0dBm LO Drive Level
High LO-RF and LO-IF Isolation
Small Solution Size
20-Lead (5mm × 5mm) QFN package
Wireless Infrastructure Receivers
(LTE, GSM, W-CDMA)
Point-to-Point Microwave links
High Dynamic Range Downmixer Applications
V
TO
RF
CCIF
LNA
1µF
(0V/3.3V)
IMAGE
BPF
SHDN
V
22pF
CC
3.3V
1.5pF
5.6pF
150nH
CT
RF
SHDN
1µF
IF
Wideband Receiver
V
+
CC2
150nH
1nF
BIAS
IF
IF
1nF
22pF
V
CC1
LO
LTC5540
190MHz
SAW
V
CC3
LO SELECT
(0V/3.3V)
AMP
IF
LOSEL
LO2
LO1
190MHz
100pF
100pF
BPF
FREQUENCY-HOPPING
ALTERNATE LO FOR
DescripTion
The LTC
gain passive downconverting mixers covering the 600MHz
to 4GHz frequency range. The LTC5540 is optimized for
0.6GHz to 1.3GHz RF applications. The LO frequency
must fall within the 0.7GHz to 1.2GHz 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 LTC5540 is designed for 3.3V operation, however; the
IF amplifier can be powered by 5V for the highest P1dB.
An integrated SPDT LO switch with fast switching accepts
two active LO signals, while providing high isolation.
The LTC5540’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.
High Dynamic Range Downconverting Mixer Family
1090MHz
SYNTH 2
SYNTH 1
LO
LTC5540
LTC5541
LTC5542
LTC5543
ADC
PART#
®
5540 TA01
Downconverting Mixer
5540 is part of a family of high dynamic range, high
High Dynamic Range
600MHz to 1.3GHz
16
15
14
13
12
11
10
9
8
7
6
600
600MHz –1.3GHz
1.3GHz – 2.3GHz
1.6GHz – 2.7GHz
Wideband Conversion Gain, IIP3
2.3GHz – 4GHz
and NF vs RF Input Frequency
G
NF
RF RANGE
C
700
RF FREQUENCY (MHz)
T
f
f
IF
LO
A
= 190MHz
= +25°C
= f
800
RF
+ f
IF
LTC5540
700MHz – 1.2GHz
1.4GHz – 2.0GHz
1.7GHz – 2.5GHz
2.4GHz – 3.6GHz
900
LO RANGE
IIP3
5540 TA01a
1000
28
27
26
25
24
23
22
21
20
19
18

5540f

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LTC5540IUH#PBF Summary of contents

Page 1

... GSM, W-CDMA) Point-to-Point Microwave links n High Dynamic Range Downmixer Applications n 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. Typical applicaTion Wideband Receiver 1nF V CCIF 3 ...

Page 2

... J orDer inForMaTion LEAD FREE FINISH TAPE AND REEL LTC5540IUH#PBF LTC5540IUH#TRPBF 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: ...

Page 3

P = –3dBm (∆f = 2MHz for two-tone IIP3 tests),unless otherwise noted. Test circuit shown in Figure 1. (Notes High-Side LO Downmixer Application 600MHz to 1100MHz 190MHz, f PARAMETER ...

Page 4

LTC5540 Dc elecTrical characTerisTics noted. Test circuit shown in Figure 1. (Note 2) PARAMETER Power Supply Requirements ( CCIF V Supply Voltage (Pins 6, 8 and 14 Supply Voltage (Pins 18 and 19) CCIF ...

Page 5

Typical ac perForMance characTerisTics V = 3.3V 3.3V, SHDN = Low CCIF 190MHz, unless otherwise noted. Test circuit shown in Figure 1. Conversion Gain, IIP3 and Frequency 28 26 IIP3 ...

Page 6

LTC5540 Typical ac perForMance characTerisTics V = 3.3V 3.3V, SHDN = Low CCIF 190MHz, unless otherwise noted. Test circuit shown in Figure 1. 2-Tone IF Output Power, IM3 and IM5 vs RF Input ...

Page 7

Typical ac perForMance characTerisTics V = 3.3V 3.3V, SHDN = Low CCIF 190MHz, unless otherwise noted. Test circuit shown in Figure 1. Conversion Gain, IIP3 and Frequency ...

Page 8

LTC5540 pin FuncTions NC (Pin 1): This pin is not connected internally. It can be left floating, connected to ground (Pin 2): Single-Ended Input for the RF Signal. This pin is internally connected to the primary ...

Page 9

DiagraM TesT circuiT 4:1 T1 C10 CCIF 3.1V TO 5.3V 96mA – IFBIAS LTC5540 CT 3 GND 4 ...

Page 10

LTC5540 applicaTions inForMaTion Introduction The LTC5540 consists of a high linearity passive double- balanced mixer core, IF buffer amplifier, high speed single- pole double-throw (SPDT) LO switch, LO buffer amplifier and bias/enable circuits. See Pin Functions section for a description ...

Page 11

The RF input impedance and input reflection coefficient, versus RF frequency, is listed in Table 1. The reference plane for this data is pin 2 of the IC, with no external matching, and the LO is driven at ...

Page 12

LTC5540 applicaTions inForMaTion The nominal LO input level is 0dBm although the limiting amplifiers will deliver excellent performance over a ±6dBm input power range. LO input power greater than 6dBm may cause conduction of the internal ESD diodes. Series capacitors ...

Page 13

Bandpass IF Matching The IF output can be matched for IF frequencies as low as 70MHz or as high as 500MHz using the bandpass IF matching shown in Figure 1 and Figure 7. L1 and L2 resonate with ...

Page 14

LTC5540 applicaTions inForMaTion The IFBIAS pin (pin 20) is available for reducing the DC current consumption of the IF amplifier, at the expense of IIP3. This pin should be left open-circuited for optimum performance. The internal bias circuit produces a ...

Page 15

... ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UH Package 20-Lead Plastic QFN (5mm × ...

Page 16

... SNR, 88dB SFDR, 149mW Power Consumption 65.4dB SNR, 78dB SFDR, 740mW Power Consumption www.linear.com ● Gain, NF and IIP3 vs RF Frequency 25°C IIP3 190MHz 400 420 440 460 480 500 520 540 RF INPUT FREQUENCY (MHz) 5541 TA02 LT 0410 • PRINTED IN USA  LINEAR TECHNOLOGY CORPORATION 2010 5540f ...

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