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LTM9001-BX_15 Datasheet, PDF (1/30 Pages) Linear Technology – 16-Bit IF/Baseband Receiver Subsystem | |||
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FEATURES
n Integrated 16-Bit, High-Speed ADC, Passive Filter
and Fixed Gain Differential Ampliï¬er
n Up to 300MHz IF Range
Lowpass and Bandpass Filter Versions
n Low Noise, Low Distortion Ampliï¬ers
Fixed Gain: 8dB, 14dB, 20dB or 26dB
50Ω, 200Ω or 400Ω Input Impedance
n 75dB SNR, 83dB SFDR (LTM9001-AD)
n Integrated Bypass Capacitance, No External
Components Required
n Optional Internal Dither
n Optional Data Output Randomizer
n LVDS or CMOS Outputs
n 3.3V Single Supply
n Power Dissipation: 1.65W
n Clock Duty Cycle Stabilizer
n 11.25mm à 11.25mm à 2.32mm LGA Package
APPLICATIONS
n Telecommunications
n High Sensitivity Receivers
n Cellular Base Stations
n Spectrum Analyzers
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
LTM9001-Ax/LTM9001-Bx
16-Bit IF/Baseband
Receiver Subsystem
DESCRIPTION
The LTM®9001 is an integrated system in a package (SiP)
that includes a high-speed 16-bit A/D converter, matching
network, anti-aliasing ï¬lter and a low noise, differential
ampliï¬er with ï¬xed gain. It is designed for digitizing wide
dynamic range signals with an intermediate frequency
(IF) range up to 300MHz. The ampliï¬er allows either AC-
or DC-coupled input drive. A lowpass or bandpass ï¬lter
network can be implemented with various bandwidths.
Contact Linear Technology regarding semi-custom
conï¬gurations.
The LTM9001 is perfect for IF receivers in demanding
communications applications, with AC performance that
includes 72dBFS noise ï¬oor and 82dB spurious free
dynamic range (SFDR) at 162.5MHz (LTM9001-AA).
The digital outputs can be either differential LVDS or single-
ended CMOS. There are two format options for the CMOS
outputs: a single bus running at the full data rate or two
demultiplexed buses running at half data rate. A separate
output power supply allows the CMOS output swing to
range from 0.5V to 3.3V.
The differential ENC+ and ENCâ inputs may be driven with
a sine wave, PECL, LVDS, TTL or CMOS inputs. An optional
clock duty cycle stabilizer allows high performance at full
speed with a wide range of clock duty cycles.
TYPICAL APPLICATION
Simpliï¬ed IF Receiver Channel
VCC
SENSE VDD = 3.3V
LTM9001
0VDD = 0.5V TO 3.6V
RF
LO
INâ
SAW
ANTI-ALIAS
FILTER
IN+
DIFFERENTIAL
FIXED GAIN
AMPLIFIER
GND
16-BIT
130Msps ADC
CLKOUT
OF
D15
â¢
CMOS
⢠OR
⢠LVDS
D0
ENC+ ENCâ
ADC CONTROL PINS
9001 TA01
OGND
64k Point FFT, fIN = 162.4MHz,
â1dBFS, PGA = 1
0
LTM9001-AA
â20
â40
â60
â80
HD3 HD2
â100
â120
0
10 20 30 40 50 60
FREQUENCY (MHz)
9001 TA01b
9001fc
1
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