LTM9013_15 Datasheet, PDF (1/38 Pages) Linear Technology – 300MHz Wideband Receiver

Features
n _{Integrated I/Q Demodulator, IF Amplifier, and Dual}
14-Bit, 310Msps High Speed ADC
n _{External Highpass Filter Allows Bandwidth}
Adjustment
n _{300MHz Lowpass Filter for Each Channel}
n _{RF Input Frequency Range: 0.7GHz to 4GHz}
n _{50Ω Single-Ended RF Port}
n _{50Ω Differential LO Port}
n _{Frequency Flatness: 1.3dB Typical}
n _{66dBc IM3 Level at –7dBFS}
n _{59dB SNR at –1dBFS}
n _{Parallel DDR LVDS Outputs}
n _{Clock Duty Cycle Stabilizer}
n _{Low Power: 2.6W}
n _{Shutdown and Nap Modes}
n _{15mm × 15mm BGA Package}
Applications
n _{Telecommunications}
n _{Wideband, Low IF Receivers}
n _{Digital Predistortion Receivers}
n _{Cellular Base Stations}
LTM9013
300MHz
Wideband Receiver
Description
The LTM^®9013 is a 300MHz wideband, low IF receiver.
Utilizing an integrated system in a package (SiP) technol-
ogy, it is a μModule^® (micromodule) receiver that includes
a dual high speed 14-bit A/D converter, lowpass filter,
differential gain stages and a quadrature demodulator.
The LTM9013 is perfect for wideband I/Q receiver 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.
A 5V supply powers the demodulator and a 3.3V supply
powers the IF amplifiers for minimal distortion. A 1.8V
supply allows low power ADC operation. A separate output
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.
L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation.
Typical Application
100Ω
15nH
0.01µF
5V
6.8pF
V_CC1
100Ω _15nH
0.01µF
V_CC2
V_DD
5V
3.3V
1.8V
LTM9013
GAIN_Q GAIN_I
OV_DD
1.8V
0°
LNA
90°
ADC
CLKOUT
ADC CLK
OF
GND
LO IN
100Ω
5V
100Ω
15nH
6.8pF
15nH
0.01µF
0.01µF
ADC
SCK CS SDI SDO
PAR/SER
GND
9013 TA01
For more information www.linear.com/LTM9013
64k Point FFT
f_IN = 1950MHz, –1dBFS
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
16 32 48 64 80 96 112 128 144 160
FREQUENCY (MHz)
9013 TA01b
9013fa
1