LTM9013
300MHz Digital
Predistortion Receiver
FEATURES
DESCRIPTION
The LTM®9013 is a 300MHz digital predistortion receiver.
Utilizing an integrated system in a package (SiP) technol-
ogy, itisaμModule® (micromodule)receiverthatincludes
a dual high speed 14-bit A/D converter, lowpass filter,
differential gain stages and a quadrature demodulator.
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Integrated I/Q Demodulator, IF Amplifier, and Dual
14-Bit, 310Msps High Speed ADC
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External Highpass Filter Allows Bandwidth
Adjustment
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300MHz Lowpass Filter for Each Channel
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RF Input Frequency Range: 0.7GHz to 4GHz
The LTM9013 is perfect for digital predistortion applica-
tions, with AC performance that includes 59dB SNR and
1.3dB frequency flatness from DC to 300MHz. A highpass
filter or simple AC coupling are used external to the device
for design flexiblity. The integrated on-chip broadband
transformers provide a 50Ω single-ended interface at
the RF input.
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50Ω Single-Ended RF Port
50Ω Differential LO Port
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Frequency Flatness: 1.3dB Typical
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66dBc IM3 Level at –7dBFS
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59dB SNR at –1dBFS
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Parallel DDR LVDS Outputs
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Clock Duty Cycle Stabilizer
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A 5V supply powers the demodulator and a 3.3V supply
powers the IF amplifiers for minimal distortion. A 1.8V
supplyallowslowpowerADCoperation.Aseparateoutput
supply allows the DDR LVDS outputs to drive 1.8V logic.
An optional multiplexer allows both channels to share a
digital output bus. An optional clock duty cycle stabilizer
allows high performance at full speed for a wide range of
clock duty cycles.
Low Power: 2.6W
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Shutdown and Nap Modes
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15mm × 15mm BGA Package
APPLICATIONS
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Telecommunications
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Wideband, Low IF Receivers
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Digital Predistortion Receivers
Cellular Base Stations
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L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation.
TYPICAL APPLICATION
15nH
100Ω
5V
0.01µF
64k Point FFT
6.8pF
15nH
0.01µF
fIN = 1950MHz, –1dBFS
100Ω
V
CC1
5V
V
CC2
3.3V
V
DD
1.8V
0
–10
LTM9013
GAIN_Q GAIN_I
OV
DD
1.8V
–20
–30
–40
ADC
–50
CLKOUT
–60
0°
ADC CLK
OF
LNA
–70
90°
–80
–90
ADC
GND
–100
–110
–120
PAR/SER
GND
SCK CS SDI SDO
9013 TA01
LO IN
0
16 32 48
96 112 128 144 160
FREQUENCY (MHz)
64 80
15nH
100Ω
0.01µF
9013 TA01b
6.8pF
5V
0.01µF
15nH
100Ω
9013f
1
For more information www.linear.com/LTM9013