LT5579
20
5579fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2008
LT 0610 REV A • PRINTED IN USA
BIAS
LT5579
RF
GND
LO
V
CC
V
CC
3.3V
5579 TA02a
1µF
IF
+
IF
–
40nH
11Ω
11Ω
33pF
33pF
MABAES0061
4:1
33pF
2.7pF
100pF 1nF
RF
OUTPUT
2650MHz
LO INPUT
–1dBm (TYP)
IF
INPUT
380MHz
1nH
40nH
relaTeD parTs
Typical applicaTion
2650MHz LTE Downlink Transmitter
Gain and OIP3 vs
RF Output Frequency
RF FREQUENCY (MHz)
2500 2550
0
GAIN (dB)
5
4
3
2
1
6
7
8
9
OIP3
10
18
OIP3 (dBm)
23
22
21
20
19
24
25
26
27
28
2600 2650 2700 2750
5579 TA02b
2800
T
A
= 25°C
V
CC
= 3.3V
f
IF
= 380MHz
LOW-SIDE LO
HIGH-SIDE LO
GAIN
PART NUMBER DESCRIPTION COMMENTS
Infrastructure
LT5527 400MHz
to 3.7GHz, 5V Downconverting Mixer 2.3dB Gain, 23.5dBm IIP3 and 12.5dB NF at 1900MHz, 5V/78mA Supply
LT5557 400MHz
to 3.8GHz, 3.3V Downconverting Mixer 2.9dB Gain, 24.7dBm IIP3 and 11.7dB NF at 1950MHz, 3.3V/82mA Supply
LTC6400-X 300MHz
Low Distortion IF Amp/ADC Driver Fixed Gain of 8dB, 14dB, 20dB and 26dB; >36dBm OIP3 at 300MHz, Differential I/O
LTC6401-X 140MHz
Low Distortion IF Amp/ADC Driver Fixed Gain of 8dB, 14dB, 20dB and 26dB; >40dBm OIP3 at 140MHz, Differential I/O
LTC6416 2GHz
16-Bit ADC Buffer 40.25dBm OIP3 to 300MHz, Programmable Fast Recovery Output Clamping
LTC6412 31dB
Linear Analog VGA 35dBm OIP3 at 240MHz, Continuous Gain Range –14dB to 17dB
LT5554 Ultralow
Distort IF Digital VGA 48dBm OIP3 at 200MHz, 2dB to 18dB Gain Range, 0.125dB Gain Steps
LT5575 700MHz
to 2.7GHz Direct Conversion I/Q
Demodulator
Integrated
Baluns, 28dBm IIP3, 13dBm P1dB, 0.03dB I/Q Amplitude Match,
0.4°
Phase Match
LT5578 400MHz
to 2.7GHz Upconverting Mixer 27dBm OIP3 at 900MHz, 24.2dBm at 1.95GHz, Integrated RF Transformer
LTC5598 5MHz
to 1.6GHz I/Q Modulator 27.7dBm OIP3 at 140MHz, 22.9dBm at 900MHz, –161.2dBm/Hz Noise Floor
RF Power Detectors
LT5534 50MHz
to 3GHz Log RF Power Detector with
60dB Dynamic Range
±1dB Output Variation over Temperature, 38ns Response Time, Log Linear
Response
LT5537 Wide
Dynamic Range Log RF/IF Detector Low Frequency to 1GHz, 83dB Log Linear Dynamic Range
LT5570 2.7GHz
Mean-Squared Detector ±0.5dB Accuracy Over Temperature and >50dB Dynamic Range, 500ns Rise Time
LT5581 6GHz
Low Power RMS Detector 40dB Dynamic Range, ±1dB Accuracy Over Temperature, 1.5mA Supply Current
ADCs
LTC2208 16-Bit,
130Msps ADC 78dBFS Noise Floor, >83dB SFDR at 250MHz
LTC2262-14 14-Bit,
150Msps ADC Ultralow Power 72.8dB SNR, 88dB SFDR, 149mW Power Consumption
LTC2242-12 12-Bit,
250Msps ADC 65.4dB SNR, 78dB SFDR, 740mW Power Consumption
