ANALOG DEVICES ADMTV300 Service Manual

www.BDTIC.com/ADI

Preliminary Technical Data

FEATURES

Single chip synthesized tuner for T-DMB, dual-band DAB and

FM receiver

Low-IF single-conversion architecture which eliminates all

SAW filters

Covers whole band-III (168 ~ 245 MHz), L-band (1450 ~ 1492

MHz) and FM (88 ~ 108 MHz)

Input sensitivity: -102 dBm

Ultra low power consumption

Band-III: 77 mW

L-band: 84 mW

1.2 V single supply

On-chip fast switching fractional-N PLL

On-chip low phase noise and wide frequency range VCO

On-chip bandwidth-adjustable band pass filter

Integrated IF programmable gain amplifier for direct

connection to digital demodulators

Noise/Linearity optimization through internal RF RSSI and

AGC loop

Adjustable take-over point

2

C serial bus interface

I

Small 32-LFCSP (QFN) package (5mm × 5mm)

Minimal external components

Fully compatible with terrestrial DMB, dual-band DAB and

FM

GENERAL DESCRIPTION

Low-IF tuner IC for T-DMB, DAB & FM

ADMTV300

FUNCTIONAL BLOCK DIAGRAMS

FM

88 ~ 108 MHz

Band III

168 ~ 245 MHz

L-Band

1450 ~ 1492 MHz

PLL

Figure 1. Block D iagram

I2C

SCL

APPLICATIONS

Terrestrial DMB and DAB Mobile Phone

Low Power Portable TV, PDA, Car A/V

FM radio application

2.048 MHz (T-DMB/DAB)

SDA

IF

540 kHz (FM)

The ADMTV300 is a highly integrated CMOS single chip low­IF single-conversion tuner IC for mobile application like
terrestrial DMB (Digital Multimedia Broadcasting), dual-band
DAB (Digital audio broadcasting) and FM. It includes 3 LNAs,
a RF PGA, a down-conversion mixer, a bandwidth adjustable
image rejection band pass filter, an IF programmable gain
amplifier, a VCO and a fractional-N PLL, etc. On-chip low
phase noise VCO along with high resolution fractional-N
frequency synthesizer make in-band phase noise lower than
that of any other conventional tuners. The ADMTV300 uses
single 1.2 V power supply.

Rev.PrA

Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its
use. Specifications subject to change without notice. No license is granted by
implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective
owners.

The ADMTV300 exhibits ultra low power consumption such as
77 mW. Using small 5 mm × 5 mm 32-LFCSP (QFN) package,
the ADMTV300 is the best solution for highly integrated multi­tuner system and portable application where low power
consumption is critical. It has an industry standard I
bus interface.

PRODUCT HIGHLIGHTS

1. Single chip synthesized tuner for terrestrial DMB, dual-band
DAB and FM receiver

2. Low-IF single-conversion architecture which eliminates all
SAW filters

3. Ultra low power consumption: 77 mW

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com/integrant
Fax: [phone] ©2007 Analog Devices, Inc. All rights reserved.

2

C serial