LTM9001-Ax/LTM9001-Bx
16-Bit IF/Baseband
Receiver Subsystem
FEATURES
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 filter and a low noise, differential
amplifier with fixed gain. It is designed for digitizing wide
dynamic range signals with an intermediate frequency
(IF) range up to 300MHz. The amplifier allows either AC-
or DC-coupled input drive. A lowpass or bandpass filter
network can be implemented with various bandwidths.
Contact Linear Technology regarding semi-custom
configurations.
n
Integrated 16-Bit, High-Speed ADC, Passive Filter
and Fixed Gain Differential Amplifier
n
Up to 300MHz IF Range
Lowpass and Bandpass Filter Versions
n
Low Noise, Low Distortion Amplifiers
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
Optional Internal Dither
n
The LTM9001 is perfect for IF receivers in demanding
communications applications, with AC performance that
includes 72dBFS noise floor and 82dB spurious free
dynamic range (SFDR) at 162.5MHz (LTM9001-AA).
n
Optional Data Output Randomizer
n
LVDS or CMOS Outputs
n
3.3V Single Supply
n
Power Dissipation: 1.65W
n
n
ThedigitaloutputscanbeeitherdifferentialLVDSorsingle-
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.
Clock Duty Cycle Stabilizer
11.25mm × 11.25mm × 2.32mm LGA Package
APPLICATIONS
n
Telecommunications
n
+
–
High Sensitivity Receivers
The differential ENC and ENC inputs may be driven with
asinewave, PECL, LVDS, TTLorCMOSinputs. Anoptional
clock duty cycle stabilizer allows high performance at full
speed with a wide range of clock duty cycles.
n
Cellular Base Stations
Spectrum Analyzers
n
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
TYPICAL APPLICATION
Simplified IF Receiver Channel
64k Point FFT, fIN = 162.4MHz,
–1dBFS, PGA = 1
V
V
= 3.3V
CC
DD
SENSE
0
LTM9001-AA
LTM9001
0V = 0.5V TO 3.6V
DD
–20
–40
D15
CMOS
•
–60
•
OR
•
–
+
LVDS
IN
ANTI-ALIAS
FILTER
16-BIT
130Msps ADC
D0
RF
HD3
HD2
–80
SAW
CLKOUT
OF
IN
–100
–120
LO
DIFFERENTIAL
FIXED GAIN
AMPLIFIER
OGND
9001 TA01
0
10
20
30
40
50
60
GND
+
ENC ENC
–
FREQUENCY (MHz)
ADC CONTROL PINS
9001 TA01b
9001fb
1