SAA7140B Selling Leads, Price trend, SAA7140B DataSheet download, circuit diagram from SeekIC.com

Features: · Scaling of video pictures down to randomly sized windows· Horizontal upscaling (zoom)· Two dimensional phase-correct data processing for improved signal quality of scaled data, especially for compression applications· Processing of a maximum of 2047 active samples pe line (V-processing...

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SeekIC No. : 004484004 Detail

SAA7140B: Features: · Scaling of video pictures down to randomly sized windows· Horizontal upscaling (zoom)· Two dimensional phase-correct data processing for improved signal quality of scaled data, especiall...

SAA7140B Data Sheet

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Part Number:: SAA7140B
Supply Ability:: 5000

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1~5000

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Negotiable

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15 Days

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Upload time: 2025/12/26

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Product Details

Description

Features:

· Scaling of video pictures down to randomly sized windows
· Horizontal upscaling (zoom)
· Two dimensional phase-correct data processing for improved signal quality of scaled data, especially for compression applications
· Processing of a maximum of 2047 active samples pe line (V-processing in bypass) and 2047 active lines per frame
· 16-bit YUV data input port
· Bidirectional expansion port with full duplex functionality (D1) or 16-bit YUV input/output
· Discontinuous data stream supported
· Field-wise switching between two data sources
· Two independent I2C-bus programming sets
· Brightness, contrast and saturation controls for scaled outputs
· Chroma key (a generation)
· YUV-to-RGB conversion including anti-gamma correction for RGB
· 16-word FIFO register for 32-bit output data
· Output configurable for 32, 24, 16 and 8-bit video data
· Scaled 16-bit 4 : 2 : 2 YUV output
· Scaled 15-bit RGB (5, 5, 5) + a with dither and 24-bit RGB (8, 8, 8) + a output
· Scaled 8-bit monochrome output
· Four independent user configurable general purpose I/O pins
· Low power consumption in I2C-bus controlled pseudo sleep mode
· Support of 5 V (SAA7140A) and pure 3.3 V (SAA7140B) signalling environment.

Pinout

Connection Diagram

Specifications

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
V_DDD(bord) V_DDD(core) V_DDD V_I V_O P_tot T_stg T_amb V_esd	digital supply voltage for I/O section digital supply voltage for internal core digital supply voltage DC input voltage DC output voltage total power dissipation storage temperature operating ambient temperature electrostatic protection	SAA7140A SAA7140A SAA7140B SAA7140B SAA7140B SAA7140A SAA7140B	-0.5 -0.5 -0.5 -0.5 -0.5 - - -65 0 2000(1)	+6.5 +6.0 +6.0 V_DDD+ 0.5 V_DDD + 0.5 750 750 +150 70 -	V V V V V mW mW °C °C V

Note
1. Pin 31 (SDA): 800 V.

Description

The SAA7140A and SAA7140B are CMOS High Performance Scaler (HPS) and is a highly integrated circuit designed for use in DeskTop Video (DTV) applications. The devices resample digital video signals using two dimensional phase-correct interpolation in order to display it in an arbitrarily sized window.

The SAA7140A fits perfectly into a 5 V signal environment and requires two different supply voltages (5 V and 3.3 V). The SAA7140B is a pure 3.3 V design and therefore has only 3.3 V supply pins. With respect to functions and programming, both devices are identical.

The SAA7140A and SAA7140B incorporate additional functions such as control of brightness, saturation, contrast, chroma key generation, YUV-to-RGB conversion, compensation of gamma precorrection, dithering and choice of several output formats.

The SAA7140A and SAA7140B accepts data from 1 or 2 input signal sources, via it's 16-bit YUV input port and/or the bidirectional expansion port. SAA7140A and SAA7140B deliver scaled data on the 32-bit VRO output port and, if selected, also on the bidirectional expansion port. A synchronous (transparent) together with an asynchronous (burst) data transfer mode is supported at the 32-bit VRO port.

SAA7140B

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