KTS6027-2 datasheet(6/41 Pages) INFINEON

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Product Description

2 - 6

KTS6027-2, KTS6029-2

Wireless Components

Specification, July 2001

2.1

General Description

The KTS6027-2, KTS6029-2 device combines a digitally programmable phase

locked loop (PLL), with a mixer-oscillator block including two balanced mixers

and oscillators for use in TV and VCR tuners.

The PLL block with four selectable chip addresses forms a digitally programm-

able phase locked loop. With a 4 MHz quartz crystal, the PLL permits precise

setting of the frequency of the tuner oscillator up to 1024 MHz in increments of

31.25, 50, 62.5 or 166.7 kHz. The tuning process is controlled by a micropro-

cessor via an I2C bus. The device has four output ports. A flag is set when the

loop is locked. It can be read by the processor via the I2C bus.

The mixer-oscillator block includes two balanced mixers (one mixer with high-

impedance input and one mixer with a balanced low-impedance input), two fre-

quency and amplitude-stable balanced oscillators for LOW/MID and HIGH, an

IF amplifier, a low-noise reference voltage source, and a band switch.

2.2

Features

General

Suitable for analog and digital terrestrial TV tuner

Compatible with KTS6027-S or KTS6029-S in normal mode

New features in extended mode

Full ESD protection

Mixer/Oscillator

High impedance mixer input for LOW/MID band

Low impedance mixer input for HIGH band

4 pin oscillator for LOW/MID band

4 pin oscillator for HIGH band

IF-Amplifier

single ended IF preamplifier

Ω output impedance

PLL

PLL with short lock-in time

High voltage VCO tuning output

Fast I2C bus

4 NPN bandswitch buffers

Internal LOW-MID/HIGH switch

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