LTM9001-GA_15 Datasheet, PDF (1/24 Pages) Linear Technology – 16-Bit IF/Baseband Receiver Subsystem

FEATURES
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 _{78dB SNR, 87dB SFDR (LTM9001-GA)}
n _{Integrated Bypass Capacitance, No External}
Components Required
n _{Optional Internal Dither}
n _{Optional Data Output Randomizer}
n _{3.3V Single Supply}
n _{Power Dissipation: 550mW (LTM9001-GA)}
n _{Clock Duty Cycle Stabilizer}
n _{11.25mm × 11.25mm × 2.32mm LGA Package}
APPLICATIONS
n _{Telecommunications}
n _{High Sensitivity Receivers}
n _{Imaging Systems}
n _{Spectrum Analyzers}
n _ATE
LTM9001-GA
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 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,
(see Table 1.)
The LTM9001 is perfect for IF receivers in demanding
communications applications, with AC performance that
includes 78dBFS noise floor and 87dB spurious free
dynamic range (SFDR) at 5MHz (LTM9001-GA).
The digital outputs are single-ended CMOS. A separate
output power supply allows the CMOS output swing to
range from 0.5V to 3.3V.
An optional clock duty cycle stabilizer allows high perfor-
mance at full speed with 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
RF
LO
Simplified IF Receiver Channel
64k Point FFT, f_IN = 5MHz,
–1dBFS, PGA = 0
V_CC
V_DD = 3.3V
SENSE
0
–10
LTM9001-GA
LTM9001-GA
0V_DD =
–20
0.5V TO 3.6V
–30
–40
–50
IN^–
SAW
ANTI-ALIAS
FILTER
IN⁺
DIFFERENTIAL
FIXED GAIN
AMPLIFIER
GND
16-BIT
25Msps ADC
D15
•
•
•
D0
CLKOUT
OF
CLK
ADC CONTROL PINS
9001-GA TA01
OGND
– 60
– 70
– 80
– 90
– 100
– 110
– 120
– 130
0.0
HD2 HD3
2.5 5.0 7.5 10.0 12.5
FREQUENCY (MHz)
9001-GA TA01a
9001gaf
1