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MC44864M

PLL TUNING CIRCUIT WITH 1.3 GHz PRESCALER AND D/A CONVERTERS

Motorola => Freescale 

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Advance Information

MC44864

PLL Tuning Circuit with

1.3 GHz Prescaler and D/A

Converters for Automatic

Tuner Alignment

The MC44864 is a tuning circuit for TV applications. This device contains

a PLL section and a DAC section and is MCU controlled through an I2C Bus.

The PLL section contains all the functions required to control the VCO of a

TV tuner. The IC generates the tuning voltage and the additional control

signals, such as band switching voltages.

The D/A section generates three additional varactor voltages to feed all of

the varactors of the tuner with individually optimized control voltages

(automatic tuner adjustment). The MC44864 is manufactured on a single

silicon chip using Motorola’s high density bipolar process, MOSIAC™

(Motorola Oxide Self–Aligned Implanted Circuits).

• Complete Single Chip System for MPU Control

• Selectable ÷8 Prescaler Accepts Frequencies up to 1.3 GHz

• 15 Bit Programmable Divider Accepts Input Frequencies up to 165 MHz

• Programmable Reference Divider

• 3–State Phase/Frequency Comparator

• Operational Amplifier for Direct Varactor Control with Low Saturation

Voltage

• Four Output Buffers (15 mA)

• Output Options for 62.5 kHz, Reference Frequency and the

Programmable Divider

• The HF Input is Symmetrical

• Three 6 Bit DACs for Automatic Tuner Adjustment Allowing Use of

Non–Matched Varactors

• Better Tuner Performances Through Optimum Filter Response

• I2C Bus Controlled

• Four Chip Addresses for the PLL Section

• Four Chip Addresses for the D/A Section

• ESD Protected to MIL–STD–883C, Method 3015.7

(2,000 V, 1.5 kΩ, 150 pF)

MOSAIC is a trademark of Motorola, Inc.

MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)

Rating

Pin

Value

Unit

Power Supply Voltage (VCC1)

Band Buffer “Off” Voltage

9

6.0

V

14 – 17

15

V

Band Buffer “On” Current

14 – 17

20

mA

PLL TUNING CIRCUIT

WITH 1.3 GHz PRESCALER

AND D/A CONVERTERS

SEMICONDUCTOR

TECHNICAL DATA

20

1

M SUFFIX

PLASTIC PACKAGE

CASE 967

(EIAJ–20)

PIN CONNECTIONS

XTAL 1

PHO 2

Amp In 3

VCC2 4

VTUN 5

DA1 6

DA2 7

DA3 8

VCC1 9

HF1 10

20 Gnd

19 SDA

18 SCL

17 B7

16 B5

15 B3

14 B1

13 CA

12 Gnd

11 HF2

Operational Amplifier Power Supply

Voltage (VCC2)

4

36

V

Operational Amplifier Short Circuit Duration 5 – 8

Continuous

S

(0 to VCC2)

Storage Temperature

–

– 65 to +150 °C

Operating Temperature Range

–

0 to +70

°C

NOTE: ESD data available upon request.

(Top View)

ORDERING INFORMATION

Device

Operating

Temperature Range

Package

MC44864M TA = 0° to +70°C

EIAJ–20

MOTOROLA ANALOG IC DEVICE DATA

© Motorola, Inc. 1996

Rev 2

1

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