Details, datasheet, quote on part number: MC44824D
PartMC44824D
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CompanyN.A.
DatasheetDownload MC44824D datasheet
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Features, Applications

The MC44824/25 are tuning circuits for TV and VCR tuner applications. They contain on one chip all the functions required for PLL control of a VCO. The integrated circuits also contain a high frequency prescaler and thus can handle frequencies to 1.3 GHz. The MC44824/25 are manufactured on a single silicon chip using Motorola's high density bipolar process, MOSAICTM (Motorola Oxide Self Aligned Implanted Circuits).

Complete Single Chip System for MPU Control (I2C Bus). Data and Clock Inputs are 3­Wire Bus Compatible Divide­by­8 Prescaler Accepts Frequencies to 1.3 GHz 15 Bit Programmable Divider Reference Divider: Programmable for Division Ratios 512 and 1024 3­State Phase/Frequency Comparator 4 Programmable Chip Addresses 3 Output Buffers (MC44824) respectively 5 Output Buffers (MC44825) for mA/15 V Operational Amplifier for use with External NPN Transistor SO­14 Package for MC44824 and SO­16 for MC44825 High Sensitivity Preamplifier Fully ESD Protected

VCC (9) B2 Buffers Latches T8 T13 P­On Reset DTB2 POR CA SDA SCL I2C Bus Receiver CL Data RL DTF 4 Shift Register 15 Bit (11) B0

UD V Operational Amplifier T10, T11 Latches Fout Fref Phase Comp PD
Preamp ÷8 Prescaler Program Divider 15 Bit Fout Latch Control
DTS, EN MC44825 Pin Numbers ( ) This device contains 3,204 active transistors.

Pin XTAL1 XTAL2 SDA SCL B0 CA VCC HF1/HF2 GND b l Symbol Input of tuning voltage amplifier First crystal input is the active pin at the oscillators Second crystal input is the internal ground Data input Clock input of the I2C bus Band buffer (open collector) outputs for 10 mA Band buffer (open collector) outputs for 10 mA Chip address selection pin Supply voltage, typical 5.0 V Symmetric HF inputs from local oscillator Ground Output of the tuning voltage amplifier. Needs an external NPN with pull­up resistor to drive the varicaps D Description i

Pin R i Rating Power Supply Voltage (VCC) Band Buffer "Off" Voltage Band Buffer "On" Current Storage Temperature Operating Temperature Range RF Input Level (10 MHz to 1.3 GHz) V l Value U i Unit mA °C Vrms

ELECTRICAL CHARACTERISTICS (VCC = 25°C, unless otherwise noted.)

 

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