AD724JRZ

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Series Information for AD724JRZ - Analog Devices

Features

  • feature
    Low Cost, Integrated Solution +5 V Operation Accepts FSC Clock or Crystal, or 4FSC Clock Composite Video and Separate Y/C (S-Video) Outputs Luma and Chroma Outputs Are Time Aligned Minimal External Components: No External Filters or Delay Lines Required Onboard DC Clamp Accepts Either HSYNC and VSYNC or CSYNC Phase Lock to External Subcarrier Drives 75 u2340 Reverse-Terminated Loads Logic Selectable NTSC or PAL Encoding Modes Compact 16-Lead SOIC

Description

IC ENCODER RGB TO NTSC 16SOIC

The AD724 is a low cost RGB to NTSC/PAL Encoder that converts red, green and blue color component signals into their corresponding luminance (baseband amplitude) and chromi- nance (subcarrier amplitude and phase) signals in accordance with either NTSC or PAL standards. These two outputs are also combined to provide composite video output. All three outputs can simultaneously drive 75 Ω, reverse-terminated cables. All logi- cal inputs are TTL, 3 V and 5 V CMOS compatible. The chip operates from a single +5 V supply. No external delay lines or filters are required. The AD724 may be powered down when not in use. The AD724 accepts either FSC or 4FSC clock. When a clock is not available, a low cost parallel-resonant crystal (3.58 MHz (NTSC) or 4.43 MHz (PAL)) and the AD724’s on-chip oscilla- tor generate the necessary subcarrier clock. The AD724 also accepts the subcarrier clock from an external video source. The interface to graphics controllers is simple: an on-chip logic “XNOR” accepts the available vertical (VSYNC) and horizon- tal sync (HSYNC) signals and creates the composite sync (CSYNC) signal on-chip. If available, the AD724 will also accept a standard CSYNC signal by connecting VSYNC to Logic HI and applying CSYNC to the HSYNC pin. The AD724 contains decoding logic to identify valid horizontal sync pulses for correct burst insertion. Delays in the U and V chroma filters are matched by an on-chip sampled-data delay line in the Y signal path. To prevent alias- ing, a prefilter at 5 MHz is included ahead of the delay line and a post-filter at 5 MHz is added after the delay line to suppress harmonics in the output. These low-pass filters are optimized for minimum pulse overshoot. The overall luma delay, relative to chroma, has been designed to be time aligned for direct input to a television’s baseband. The AD724 comes in a space-saving SOIC and is specified for the 0°C to +70°C commercial tem- perature range.

Specifications

Input Format:
-
Output Format:
-
Supply Voltage Min:
4.75V
Supply Voltage Max:
5.25V
TV / Video Case Style:
SOIC
No. of Pins:
16Pins
Operating Temperature Min:
0°C
Operating Temperature Max:
70°C
Product Range:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (07-Jul-2017)
Audio IC Case Style:
SOIC
Base Number:
724
No. of Output Channels:
3Channels
Operating Temperature Range:
0°C to +70°C
Power Dissipation Pd:
800mW
Supply Voltage Range:
4.75V to 5.25V
Termination Type:
Surface Mount Device

Alternate Descriptions

RS Components
RGB to NTSC and PAL Encoder 16-Pin SOIC
Newark Electronics
RGB TO NTSC/PAL ENCODER, 16-SOIC; Input Format:-; Output Format:-; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; TV / Video Case Style:SOIC; No. of Pins:16Pins; Operating Temperature Min:0°C; Operating Temperature Max:70°C RoHS Compliant: Yes
Conrad
ICs from leading manufacturers. Full details free to download from our comprehensive product documents library.
RS Components UK
RGB to NTSC and PAL Encoder 16-Pin SOIC
RS Components DE
Videoencoder AD724JRZ, SOIC W, 16-Pin Montage-Typ : SMD Abmessungen : 10.5 x 7.6 x 2.35mm Länge : 10.5mm Breite : 7.6mm Betriebstemperatur max. : +70 °C, Analog Devices
RS Components HK
RGB to NTSC and PAL Encoder 16-Pin SOIC
RS Components JP
RGB to NTSC and PAL Encoder 16-Pin SOIC
RS Components FR
RGB to NTSC and PAL Encoder 16-Pin SOIC
RS Components CN
AD724JRZ 视频编码器, 16针 SOIC W�
RS Components ES
RGB to NTSC and PAL Encoder 16-Pin SOIC
RS Components NL
RGB to NTSC and PAL Encoder 16-Pin SOIC
RS Components NO
RGB to NTSC and PAL Encoder 16-Pin SOIC
RS Components US
RGB to NTSC and PAL Encoder 16-Pin SOIC
RS Components SG
RGB to NTSC and PAL Encoder 16-Pin SOIC
RS Components TW
RGB to NTSC and PAL Encoder 16-Pin SOIC

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