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BA7230LS, BA7230S, BA7232FS

Table of contents:
Info of BA7230LS
Info of BA7230S
Info of BA7232FS

BA7230LS, BA7230S, BA7232FS Selling Leads, Datasheet

MFG:ROHM Package Cooled:ZIP D/C:00+

BA7230LS, BA7230S, BA7232FS Datasheet download

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Part Number: BA7230LS

MFG: ROHM

Package Cooled: ZIP

D/C: 00+

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BA7230LS General Description

The BA7230LS comprises an RGB signal matrix circuit, balanced modulator circuit (rectangular 2-phase modulation), oscillator circuit (VCXO) for a 3.58MHz subcarrier synchronized with video input burst signals, luminosity and color difference signal mixing circuit, and a high speed switch for selecting composite signals of video input and RGB input. RGB signals, synch signals, BFP (burst flag pulses), PCP (pedestal clamp pulses) are input, and an NTSCcomposite signal is output.

BA7230LS Maximum Ratings

Parameter	Symbol	Limits	Unit
Applied voltage	V_CC	7.0	V
Power dissipation	P_d	500^*	mW
Operating temperature	T_opr	20 ~ + 70
Storage temperature	T_stg	55 ~ + 125

BA7230LS Features

Allows superimposition of video images (VIDEO IN) and computer images (RGB IN).
During superimposition, the subcarrier locked onto the video input burst signal RGB is modulated with the RGB signals by the APC circuit, preventing unnatural color disturbance due to switching.
Both the RGB and video input signals are pedestalclamped, maintaining a natural image even during fluctuation in luminosity.
Using a half down pulse, the video signal can be reduced by 5dB to darken the background and make the superimposed RGB image easier to see.
Carrier leak is suppressible to less than 70mV_P-P (V_OUT = 2V_P-P) without adjustment.
Can be adapted for analog RGB input.
Compact 24-pin SZIP package minimizes external components.

BA7230LS Typical Application

Televisions (Teletext-capable), captain systems, video cameras, personal computers

BA7230LS Connection Diagram

BA7232FS General Description

The BA7232FS converts analog RGB signals into color TV signals in the NTSC and PAL formats. From inputs of analog RGB signals, a composite synch signal, burst pulses and a color carrier, this IC generates a color TV signal, and can be adapted for either NTSC or PAL standards, which are selected externally. When set to PAL, the BA7232FS changes chroma phase according to the burst flag pulses.

The chroma signals and luminosity signals can be combined into a color TV signal or output separately, making this IC suitable for S pins. Also, this IC comes with an output pin for the analog RGB signal. Each output has a built-in 75 driver.

BA7232FS Maximum Ratings

Parameter	Symbol	Limits	Unit
Power supply voltage	V_cc	7	V
Power dissipation	P_d	750^*	mW
Operating temperature	T_opr	20 ~ + 70
Storage temperature	T_stg	55 ~ + 125

BA7232FS Features

Can be adapted for NTSC and PAL formats.
Internal flip-flop for PAL phase switching.
Separate Y / C output pins.
Analog RGB signal output pins.
Internal 75 driver. (outputs color TV signals, luminosity signals, chroma signals and analog RGB signals)
Adaptable for color subcarrier pulse input.

BA7232FS Typical Application

TV peripherals

BA7232FS Connection Diagram

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