STV4100 Datasheet, PDF(1/7 Page) STMicroelectronics – Ultra-compact low-power 3.3-V terrestrial tuner IC

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STV4100 Datasheet, PDF (1/7 Pages) STMicroelectronics – Ultra-compact low-power 3.3-V terrestrial tuner IC

STV4100

Ultra-compact low-power 3.3-V terrestrial tuner IC

Data Brief

Features

! RF-to-baseband direct conversion

(IQ interface only)

! Single 3.3-V DC supply

! Input frequency range 174 to 230 MHz and

470 to 870 MHz

! Fully integrated VCO

! Harmonic rejection mixer stage

! Fully integrated RF AGC with RF power

monitoring

! Programmable channel filter covers 6 to 8 MHz

channel spacing

! Low external component count

! Low power consumption (625 mW typical)

! Temperature range -10Â° C to 70Â° C

! Crystal frequency output to drive the

demodulator IC

! Compatible with 5-V and 3.3-V I2C bus

! Fully Nordig Unified (versions 1.0.2, 1.0.3, 2.0)

compliant

! DTG (D-Book) compliant

! Digitenne compliant

! VFQFPN-32 5x5x1 mm3, exposed pad down

! ECOPACK, environmentally-friendly package,

RoHS (2002/95/EC) compliant.

Description

The STV4100 terrestrial tuner is a direct-

conversion (zero-IF) receiver with quadrature

outputs intended for digital TV broadcasting.

On each VHF and UHF input is a low noise

amplifier with both switchable and variable gain to

ensure an optimal signal level for the two mixers.

Each mixer, which down-converts the signal to

baseband, is followed by a low-pass filter and

amplifier. The baseband gain is programmable via

a dedicated pin.

The LO signals are provided by an integrated PLL

which contains an on-chip voltage controlled

oscillator meeting stringent phase noise

requirements. The LO frequencies are

programmable.

The comparison frequency for the

phase/frequency detector is generated by dividing

the crystal oscillator reference frequency. The

crystal frequency can be from 16 MHz to 31 MHz

depending on application.

Typical applications

! Terrestrial set-top box

! iDTV

! PCTV

RFAGC

VHF_IN

UHF_IN

XTI, XTO

FREF

PLL, dividers

Amplifier

DC offset compensation

I2C Bus Interface

BBAGC

BBIP

BBIN

BBQP

BBQN

SCL

SDA

March 2009

Rev 1

For further information contact your local STMicroelectronics sales office.

1/7

www.st.com

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