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OM8378 PDF – TV Signal Processor-Closed Caption Decoder

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Part Number: OM8378

Function: TV signal processor-Closed Caption decoder

Package: DIP 64 Pin Type

Manufacturer: Philips Semiconductors

Images:OM8378 datasheet

Description

The OM8373 and OM8378 combine the functions of a video processor together with a µ-Controller and US Closed Caption decoder. The ICs are intended to be used in economy television receivers with 110° picture tubes. The ICs have supply voltages of 8 V and 3.3 V and they are mounted in a SDIP-64 envelope. The features are given in the following feature list.

Features

TV-signal processor

1. Vision IF circuit suitable for negative modulation with alignment-free PLL demodulator

2. Internal (switchable) time-constant for the IF-AGC circuit

3. The mono intercarrier sound circuit has a selective FM-PLL demodulator which can be switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz).  The quality of this system is such that the external band-pass filters can be omitted.

4. Source selection between the ‘internal’ CVBS and an external CVBS or Y/C signal

Pinouts:
OM8378 pdf pinout

A TV signal processor, including a Closed Caption (CC) decoder, is a crucial component in modern television sets and video equipment. The Closed Caption decoder is responsible for extracting and displaying closed captions, which are text-based subtitles or captions that provide a transcript of the audio content on the screen.

1. Reception of TV Signal: The TV signal processor receives the incoming television signal, which includes both the audio and video components. This signal can come from various sources, including cable or satellite providers, over-the-air broadcasts, or external devices like DVD players and gaming consoles.

2. Separation of Video and Audio: The processor separates the video and audio components of the incoming signal. The video component is sent to the TV display, while the audio is routed to the TV’s audio system.

3. Closed Caption Data Extraction: Within the audio and video signal, there is embedded data related to the closed captions. This data is encoded using a standard protocol, such as CEA-608 or CEA-708 for North American television broadcasts. The Closed Caption decoder within the TV signal processor extracts this data.

OM8378 PDF Datasheet

LMV3241 PDF – Rail-to-Rail Output Operational Amplifier

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Part Number: LMV3241

Correct Number: LMV324I

Function: Rail-to-Rail Output Operational Amplifier

Package: SO, TSSOP 14 Pin Type

Manufacturer: ST, TI, Fairchild Semiconductor

Images:LMV3241 pdf pinout

Description

The LMV321, LMV3241, LMV358 family (single, dual, and quad) answers the need for low cost, general-purpose operational amplifiers. They operate with voltages as low as 2.7 V and feature both input and output rail-to-rail, 145 μA consumption current, and 1 MHz gain bandwidth product (GBP).

With such a low consumption and a sufficient GBP for many applications, these op amps are well suited for any kind of battery supplied and portable equipment.
application.

These devices are the most cost-effective solutions for applications where low-voltage operation, space
saving, and low cost are needed. These amplifiers are designed specifically for low-voltage (2.7 V to 5
V) operation, with performance specifications meeting or exceeding the LM358 and LM324 devices that
operate from 5 V to 30 V. With package sizes down to one-half the size of the DBV (SOT-23) package, these devices can be used for a variety of applications.

Features

1. Operating range from VCC = 2.7 to 6 V

2. Rail-to-rail input and output

3. Extended Vicm (VDD – 0.2 V to VCC + 0.2 V)

4. Low supply current (145 μA)

5. Gain bandwidth product (1 MHz)

6. ESD tolerance (2 kV)

 

LMV3241 datasheet

Applications:

1. Battery powered electronic equipment

2. Personal medical care (glucose meters)

3. Laptops

LMV3241 PDF Datasheet

LMV3241 pdf