LTC5542
16
5542f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2010
LT 0310 • PRINTED IN USA
RELATED PARTS
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
LT5579 1.5GHz to 3.8GHz Upconverting Mixer 27.3dBm OIP3 at 2.14GHz, NF = 9.9dB, 3.3V Supply, Single-Ended LO and RF Ports
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
TYPICAL APPLICATION
IF
RF
BIAS
22pF
0.7pF
RF
SHDN
22pF
SHDN
(0V/3.3V)
LTC5542
V
CC2
V
CC
3.3V
V
CC1
V
CC3
LOSEL
4.7pF
LO1
LO
LO2
IF
+
IF
–
5542 TA02
1µF
LO
V
CCIF
3.3V
22pF
1.5pF
1k
82nH 82nH
4:1
1µF
IF
OUT
30MHz to 150MHz
IF OUTPUT FREQUENCY (MHz)
30
7
G
C
(dB), IIP3 (dBm)
25
23
21
19
17
15
13
11
9
27
–25
IF RETURN LOSS (dB)
–5
–10
–15
–20
0
40 12013014015050 60 70
5542 TA03
80 90 100110
RF = 1950 ±60MHz
LO = 2040MHz
P
LO
= 0dBm
V
CC
= V
CCIF
= 3.3V
T
A
= 25°C
IIP3
G
C
IF RETURN LOSS
Wideband Conversion Gain, IIP3 and
IF Output Return Loss vs Output Frequency
Wideband, Low-Frequency IF using Lowpass IF Matching
