LT5512EUF Linear Technology, LT5512EUF Datasheet

IC MIXER DWNCONV HI SIGN 16-QFN

LT5512EUF

Manufacturer Part Number
LT5512EUF
Description
IC MIXER DWNCONV HI SIGN 16-QFN
Manufacturer
Linear Technology
Series
LT5512r
Datasheet

Specifications of LT5512EUF

Rf Type
Cellular, HF, ISM, PCS, UHF, VHF, WMTS
Frequency
1kHz ~ 3GHz
Number Of Mixers
1
Gain
1.1dB
Noise Figure
14dB
Secondary Attributes
Down Converter
Current - Supply
74mA
Voltage - Supply
4.5 V ~ 5.25 V
Package / Case
16-WQFN Exposed Pad
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT5512EUF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT5512EUF#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT5512EUF#TRPBF
Manufacturer:
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Part Number:
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Manufacturer:
LINEAR/凌特
Quantity:
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Part Number:
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Quantity:
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APPLICATIO S
FEATURES
TYPICAL APPLICATIO
TO 614MHz
608MHz
Broadband RF, LO and IF Operation
High Input IP3: >20dBm from 30MHz to 900MHz
Typical Conversion Gain: 1dB
SSB Noise Figure: 11dB at 900MHz
Integrated LO Buffer: Insensitive to LO Drive Level
Single-Ended or Differential LO Drive
High LO-RF Isolation
Enable Function
4.5V to 5.25V Supply Voltage Range
4mm × 4mm QFN Package
HF/VHF/UHF Mixer
Cellular/PCS/UMTS Infrastructure
High Linearity Mixer Applications
ISM Band Receivers
Wireless Medical Telemetry System (WMTS)
RF
50Ω
High Signal-Level Downmixer for 600MHz Wireless Medical Telemetry System
IN
47nH
6.8nH
6.8pF
+17dBm at 1900MHz
U
–5dBm TYP
14dB at 1900MHz
EN
5V
6.8nH
LO
6.8pF
IN
RF
RF –
LT5512
+
0.01µF
EN V
U
LO
BIAS
+
CC2
100Ω
V
0.01µF
0.01µF
LO –
CC1
IF –
IF
+
1.8pF
8:1
1kHz-3GHz High Signal Level
1µF
DESCRIPTIO
The LT
timized for high linearity HF, VHF and UHF applications.
The IC includes an integrated LO buffer amplifi er to drive
the mixer and an RF buffer amplifi er for improved LO-RF
isolation. Internal bias circuits eliminate the need for
precision external resistors and allow the device to be
powered-down using the enable control (EN) pin.
The externally matched RF and IF ports allow the mixer
to be used at very low frequencies, below 1MHz or up to
3GHz. The differential LO input is designed for single-ended
or a differential input drive.
The LT5512 is a high-linearity alternative to passive diode
mixers. Unlike passive mixers, which have conversion
loss and require high LO drive levels, the LT5512 deliv-
ers conversion gain and requires signifi cantly lower LO
drive levels.
All other trademarks are the property of their respective owners.
, LTC and LT are registered trademarks of Linear Technology Corporation.
V
4.5V TO 5.25V
®
CC
IF
45MHz
50Ω
5512 is an active double-balanced mixer IC, op-
5512 TA01
OUT
21
19
17
15
13
11
9
7
5
3
1
U
–11
SSB NF
IIP3
G
C
LO Leakage vs LO Power
–9
Conv Gain, IIP3, NF and
Active Mixer
–7
LO POWER (dBm)
–5
–3
T
RF = 610MHz
HIGH-SIDE LO
IF = 45MHz
LO-RF
LO-IF
A
LT5512
= 25°C
–1
5512 TA01a
1
20
0
–20
–40
–60
–80
5512fa
1

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LT5512EUF Summary of contents

Page 1

... LO drive levels, the LT5512 deliv- ers conversion gain and requires signifi cantly lower LO drive levels. , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 0.01µF 100Ω ...

Page 2

... GND PACKAGE 16-LEAD (4mm × 4mm) PLASTIC QFN = 125°C, θ 37°C/W JMAX JA EXPOSED PAD IS GROUND (PIN 17) (MUST BE SOLDERED TO PCB) PART MARKING LT5512EUF 5512 http://www.linear.com/leadfree High, CC MIN TYP MAX 4.5 5.25 56 MIN TYP MAX 0.001 to 3000 0.001 to 3000 0.001 to 2000 – ...

Page 3

AC ELECTRICAL CHARACTERISTICS = –10dBm (–10dBm/tone for two-tone IIP3 tests, Δf = 200kHz), High-Side LO at –5dBm for 45MHz 5V High 25° 140MHz and 450MHz tests, Low-Side LO at –10dBm ...

Page 4

LT5512 W TYPICAL DC PERFOR A CE CHARACTERISTICS Supply Current vs Supply Voltage 4.5 4.75 SUPPLY VOLTAGE (V) W TYPICAL AC PERFOR A CE CHARACTERISTICS = –10dBm (–10dBm/tone for ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS High 25°C, 1900MHz RF input matching Low-Side LO –10dBm, IF output measured at 170MHz, unless otherwise noted. Test circuit shown in ...

Page 6

LT5512 CTIO S NC (Pins 13, 16): Not connected internally. These pins should be grounded on the circuit board for improved and isolation. + – RF ...

Page 7

TEST CIRCUITS T1 1 INPUT MATCHING RF(MHz) T1 L1, L2 0.25 - 250 WBC4-4L --- 45 47nH 70 27nH 140 WBC1-1TL 12nH 240 6.8nH 380 5.6nH 450 4.7nH REF DES VALUE SIZE PART NUMBER R1 ...

Page 8

LT5512 U U APPLICATIO S I FOR ATIO The LT5512 consists of a double-balanced mixer, RF buffer amplifi er, high-speed limiting LO buffer and bias/enable circuits. The differential RF, LO and IF ports require simple external matching which allows the ...

Page 9

U U APPLICATIO S I FOR ATIO 0 –5 –10 –15 900MHz –20 –25 140MHz 450MHz –30 50 100 RF FREQUENCY (MHz) Figure 5. RF Input Return Loss (140MHz, 450MHz, 900MHz and 1900MHz Matching) At high frequencies (greater than 900MHz), ...

Page 10

LT5512 U U APPLICATIO S I FOR ATIO 0 –5 –10 4.7nH 5.6nH –15 6.8nH –20 8.2nH –25 10nH –30 0 2000 2500 500 1000 1500 FREQUENCY (MHz) Figure 8. Single-Ended LO Port Return Loss vs Frequency for Various Values ...

Page 11

... MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 4. EXPOSED PAD SHALL BE SOLDER PLATED 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 Package 16-Lead Plastic QFN (4mm × ...

Page 12

... Bandwidth, 40dBm OIP3, 4.5dB to 27dB Gain Control –65dBm LO-RF Leakage Single-Ended 50Ω RF and LO Ports, 23.5dBm IIP3 at 1.9GHz 21.8dBm OIP3 at 2GHz, –159dBm/Hz Noise Floor, 50Ω Interface at all Ports ● www.linear.com (DC478B LT/LT 1005 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 = 28mA = 28mA, 5512fa ...

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