LINEAR TECHNOLOGY LTC9004 Technical data

RF-to-Digital µModule Receivers

Direct Conversion IF Sampling

The LTM®9004 (Direct Conversion) and LTM9005 (IF Sampling) μModule® receivers offer unprecedented integration for more
compact, low power designs and dramatically faster time-to-market. Integrating the RF, signal filtering, gain stages and
high-speed ADCs, these receivers eliminate time-consuming design, layout and component sourcing associated with high
performance communication systems. With no performance compromise, they enable dense, multichannel macrocells or
compact remote radio heads.

Features

n

Fully Integrated RF-to-Digital Receivers

n

14-Bit, 125Msps Low Power ADC

n

Direct Conversion Architecture (LTM9004)

- 700MHz to 2.7GHz RF Input Range

- I/Q Demodulation & Dual ADC

- 5V & 3V Supplies, 1.8W Total

n

IF-Sampling Architecture (LTM9005)

- 400MHz to 3.8GHz RF Input Range

- 20MHz SAW Filter, 140MHz IF

- 3.3V Supply, 1.3W Total

n

22mm × 15mm LGA Package

LTM9004 Demo Board

L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are
registered trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners.

LTM9004 Block Diagram and Performance

OPTION FILTER CUTOFF SIGNAL BANDWIDTH

LTM9004-AA 1.92MHz 3.84MHz (1-Carrier WCDMA)

LTM9004-AB 4.42MHz 8.84MHz (2-Carrier WCDMA)

LTM9004-AC 9.42MHz 18.84MHz (4-Carrier WCDMA)

LTM9004-AD 20MHz 40MHz

OPTION FILTER CENTER SIGNAL BANDWIDTH

LTM9005-AA 140MHz 16MHz

LTM9005-AB 140MHz 20MHz

V

= 5V

LNA

CC1

OFFSET ADJUST

DC OFFSET
CONTROL

I

0°

90°

Q

V

CC2

LO

V

= 3V

CC3

GND

V

DD

ADC

ADC

LTM9004-AD

DAC

OV

DD

0.5V TO

3.6V

CLKOUT

ADC CLK
MUX
OF

OGND

0
–10

–20

–30
–40

–50

HD2

–60

–70

–80

AMPLITUDE (dBFS)

–90

–100

–110

–120

0

4

HD3

81612

FREQUENCY (MHz)

20

9004 TA01b

LTM9005 Block Diagram and Performance

3.3V

LNA

SAW

GNDGAINLO

μModule Receiver Features

n

Ease of Use, Faster Time-to-Market

n

Eliminates Most Challenges of Driving High Speed ADCs

n

Integrates Key Components

n

Simplifies Layout without Sacrificing Performance

n

Provides System-Level Testing

n

Dramatically Smaller and Simpler than Discrete

Implementations

n

Proven LTC Quality, Reliability and Service

n

ECCN 5A991 - No Export License Required

0

OV

CLK

ADC

LTM9005

DAC

DD

0.5V to 3.6V

OGND

–10

–20

–30

AMPLITUDE (dB)

–40

–50

–60

120

140 150

130

IF FREQUENCY (MHz)

160

Semi-Custom Options

The LTM9004 and LTM9005 are available in semi-custom
options, subject to business approval. Changes are limited to
filter configurations and the ADC speed and resolution where
pin-compatible alternatives are available. Contact Linear
Technology for details.

www.linear.com/signalchain n 1-800-4-LINEAR

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