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Linear Technology Electronic Components Datasheet

LTM9002 Datasheet

14-Bit Dual-Channel IF/ Baseband Receiver Subsystem

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LTM9002 pdf
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LTM9002
14-Bit Dual-Channel IF/
Baseband Receiver Subsystem
FEATURES
n Integrated Dual 14-Bit, High-Speed ADC, Passive
Filters and Fixed Gain Differential Amplifiers
n Up to 300MHz IF Range
Lowpass and Bandpass Filter Versions
n Integrated Low Noise, Low Distortion Amplifiers
Fixed Gain: 8dB, 14dB, 20dB or 26dB
50Ω, 200Ω or 400Ω Input Impedance
n Integrated Bypass Capacitance, No External
Components Required
n 66dB SNR Up to 140MHz Input (LTM9002-AA)
n 76dB SFDR Up to 140MHz Input (LTM9002-AA)
n Auxiliary 12-Bit DACs for Gain Adjustment
n Clock Duty Cycle Stabilizer
n Single 3V to 3.3V Supply
n Low Power: 1.3W (665mW/ch.)
n Shutdown and Nap Modes
n 15mm × 11.25mm LGA Package
APPLICATIONS
n Telecommunications
n Direct Conversion Receivers
n Main and Diversity Receivers
n Cellular Base Stations
DESCRIPTION
The LTM®9002 is a 14-bit dual-channel IF receiver sub-
system. Utilizing an integrated system in a package (SiP)
technology, it includes a dual high-speed 14-bit A/D con-
verter, matching network, anti-aliasing filter and two low
noise, differential amplifiers. It is designed for digitizing
wide dynamic range signals with an intermediate frequency
(IF) up to 300MHz. The amplifiers allow either AC- or DC-
coupled input drive. Lowpass or bandpass filter networks
can be implemented with various bandwidths. Contact
Linear Technology regarding customization.
The LTM9002 is perfect for demanding communications
applications, with AC performance that includes 66dB SNR
and 76dB spurious free dynamic range (SFDR). Auxiliary
DACs allow gain balancing between channels.
A single 3V supply allows low power operation. A separate
output supply allows the outputs to drive 0.5V to 3.3V logic.
An optional multiplexer allows both channels to share a
digital output bus. Two single-ended CLK inputs can be
driven together or independently. An optional clock duty
cycle stabilizer allows high performance at full speed for
a wide range of clock duty cycles.
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
Dual Channel IF Receiver
VCC = 3V
VDD
VREF
MAIN
RF
LO
DIVERSITY
RF
LO
SAW
INA+
INA
DIFFERENTIAL
AMPLIFIERS
SAW
INB+
INB
FILTER
DAC
DAC
FILTER
14-BIT
125Msps ADC
14-BIT
125Msps ADC
GND
OVDD
0.5V TO 3.6V
CLKOUT
ADC CLK
SPI
MUX
OF
9002 TA01
OGND
64k Point FFT, fIN = 15MHz, –1dBFS,
SENSE = VDD, Channel A (LTM9002-LA)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
5 10 15 20 25 30
FREQUENCY (MHz)
9002 TA01b
9002f
1


Linear Technology Electronic Components Datasheet

LTM9002 Datasheet

14-Bit Dual-Channel IF/ Baseband Receiver Subsystem

No Preview Available !

LTM9002 pdf
LTM9002www.DataSheet4U.com
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Supply Voltage (VCC) ................................ –0.3V to 3.6V
Supply Voltage (VDD, OVDD)......................... –0.3V to 4V
Digital Output Ground Voltage (OGND)........ –0.3V to 1V
Input Current (IN+, IN)........................................±10mA
DAC Digital Input Voltage
(CS/LD, SDI, SCK) ................................... –0.3V to 6V
Digital Input Voltage
(Except AMPSHDN) ................. –0.3V to (VDD + 0.3V)
Digital Input Voltage
(AMPSHDN)..............................–0.3V to (VCC + 0.3V)
Digital Output Voltage ................–0.3V to (OVDD + 0.3V)
Operating Temperature Range
LTM9002C................................................ 0°C to 70°C
LTM9002I.............................................–40°C to 85°C
Storage Temperature Range...................–65°C to 125°C
PIN CONFIGURATION
INA+
INA
VCC
INB
INB+
SENSEB SENSEA
ALL OTHERS = GND
J
OVDD
H
G
OGND
F
VDD
E
D
OGND
C
B
OVDD
A
1 2 3 4 5 6 7 8 9 10 11 12
CLKA CLKB CONTROL
DATA
LGA PACKAGE
108-LEAD (15mm × 11.25mm × 2.32mm)
TJMAX = 125°C, θJA = 19°C/W, θJCTOP = 16°C/W, θJCBOT = 6°C/W
θJA DERIVED FROM 101.5mm × 114.5mm PCB WITH 4 LAYERS
WEIGHT = 0.935g
ORDER INFORMATION
LEAD FREE FINISH
TRAY
PART MARKING* PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTM9002CV-AA#PBF LTM9002CV-AA#PBF LTM9002VAA
108-Lead (15mm × 11.25mm × 2.3mm) LGA 0°C to 70°C
LTM9002CV-LA#PBF LTM9002CV-LA#PBF LTM9002VLA
108-Lead (15mm × 11.25mm × 2.3mm) LGA 0°C to 70°C
LTM9002IV-AA#PBF
LTM9002IV-AA#PBF LTM9002VAA
108-Lead (15mm × 11.25mm × 2.3mm) LGA –40°C to 85°C
LTM9002IV-LA#PBF
LTM9002IV-LA#PBF LTM9002VLA
108-Lead (15mm × 11.25mm × 2.3mm) LGA –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
9002f
2


Part Number LTM9002
Description 14-Bit Dual-Channel IF/ Baseband Receiver Subsystem
Maker Linear Technology Corporation
Total Page 28 Pages
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