Texas Instruments SN28838
The SN28838 is a monolithic integrated circuit designed to interface with the SN28837 PALtiming generator in order to generate the PAL-color timing signals. It receives inputs from the SN28837 and a 17-MHz oscillator and outputs the PAL-color subcarrier, color subcarrier delayed by 90 degrees, and burst-color-subcarrier signals, which are all 4.43-MHz outputs. The SN28838 is supplied in a 16-pin surfacemount package and is characterized for operation from 0°C to 40°C.| Part No. | SN28838 |
|---|---|
| Datasheet | SN28838 Download |
| Manufacturer |  Texas Instruments |
| Description | PAL-COLOR SUBCARRIER GENERATOR |
| Buy | Stock & Price |
DESCRIPTION
BSC 11 O Burst subcarrier CLK13M 7 I 13.34-MHz clock from SN28837 GND 1 Ground GND 6 Ground LOCK 13 O PLL lock signal. LOCK is high when the phase-locked loop is locked. LSW 4 I Line switch (from SN28837) PD 3 I Power down PLLFIL 12 Terminal for PLL filter SC 9 O Subcarrier SC(90) 10 O Subcarrier 90° out of phase VCC† VCC† 5 14 Power supply voltage Power supply voltage VDD1 2 Power supply voltage for X1 VDD2 8 Power supply voltage for CLK13M X1 16 X2 15 Crystal oscillator † These two terminals should be connected together externally. 0° 0° SC LSW SC(90) BSC SC – 90° SC + 90° SC – 90° SC + 180° Figure 1. SC, SC(90), and BSC Timing●4-2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265 SN28838 PAL-COLOR SUBCARRIER GENERATOR SOCS029B – AUGUST 1991 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 7 V Input voltage range, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to VCC + 0.
