LTM9002

1

9002f

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

14-Bit Dual-Channel IF/

Baseband Receiver Subsystem

system. Utilizing an integrated system in a package (SiP)

technology, it includes a dual high-speed 14-bit A/D con-

verter, matching network, anti-aliasing filter and two low

noise, differential amplifiers. It is designed for digitizing

wide dynamic range signals with an intermediate frequency

(IF) up to 300MHz. The amplifiers allow either AC- or DC-

coupled input drive. Lowpass or bandpass filter networks

can be implemented with various bandwidths. Contact

Linear Technology regarding customization.

The LTM9002 is perfect for demanding communications

applications, with AC performance that includes 66dB SNR

and 76dB spurious free dynamic range (SFDR). Auxiliary

DACs allow gain balancing between channels.

A single 3V supply allows low power operation. A separate

output supply allows the outputs to drive 0.5V to 3.3V logic.

An optional multiplexer allows both channels to share a

digital output bus. Two single-ended CLK inputs can be

driven together or independently. An optional clock duty

cycle stabilizer allows high performance at full speed for

a wide range of clock duty cycles.

Dual Channel IF Receiver

Filters and Fixed Gain Differential Amplifiers

Lowpass and Bandpass Filter Versions

Fixed Gain: 8dB, 14dB, 20dB or 26dB

50Ω, 200Ω or 400Ω Input Impedance

Components Required

× 11.25mm LGA Package

OF

GND

LO

DIFFERENTIAL

AMPLIFIERS

MAIN

RF

0.5V TO 3.6V

SAW

FILTER

MUX

CLKOUT

ADC CLK

SPI

14-BIT

125Msps ADC

9002 TA01

LO

DIVERSITY

RF

OGND

SAW

FILTER

14-BIT

125Msps ADC

DAC

DAC

FREQUENCY (MHz)

9002 TA01b

0

–80

–70

–90

–100

–110

–60

–50

–40

–30

–20

–10

–120

0

5

10

15

20

25

30

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.