PHILIPS SAA4945H LINE MEMORY NOISE REDUCTION IC (LIMERIC) User Manual
Summary
The SAA4945H is a specialized Line Memory IC designed for advanced, 2-D adaptive noise reduction in video signals (Y, U, V). This manual provides comprehensive technical specifications, including block diagrams, detailed pinouts, electrical characteristics, and operating parameters necessary for integration. It is essential documentation for engineers and hardware designers developing sophisticated analog/digital signal processing units who require high-quality video data cleaning at the source.
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查询SAA4945H供应商
INTEGRATED CIRCUITS
DATA SHEET
SAA4945H LIne MEmory noise Reduction IC (LIMERIC)
Preliminary specification Jun
File under Integrated Circuits, IC02
Page Summary Contents For PHILIPS SAA4945H LINE MEMORY NOISE REDUCTION IC (LIMERIC) User Manual
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查询SAA4945H供应商 INTEGRATED CIRCUITS DATA SHEET SAA4945H LIne MEmory noise Reduction IC (LIMERIC) Preliminary specification Jun File under Integrated Circuits, IC02
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) FEATURES GENERAL DESCRIPTION 2-D adaptive vertically recursive noise reduction The SAA4945H, LIMERIC ...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) BLOCK DIAGRAM p S ca le handbook, full pagewidth VDD1 VDD2 VDD3 NOISE 36, 37 UO0, UO1 REDUCTION RAM_U...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) PINNING SYMBOL PIN TYPE DESCRIPTION YO7 output luminance output bit 7 SNDA input/output data from int...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) SYMBOL PIN TYPE DESCRIPTION YO3 output luminance output bit 3 YO4 output luminance output bit 4 YO5 o...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) FUNCTIONAL DESCRIPTION LUMINANCE FILTER The digital LIMERIC is an effective low noise reduction IC Th...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) Noise estimator The threshold value N_thr for the filters is calculated in the noise estimator block ...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) Table 8 Input /output data coding INPUT BIT INPUT DATA SEQUENCE UI1 U07 U05 U03 U01 UI0 U06 U04 U02 U...
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Philips Semiconductors Preliminary specification lin lin LIne MEmory noise Reduction IC SAA4945H (LIMERIC) handbook, full pagewidth CLK WEI (WES = 0 status register) WEI (WES = 1 status register) YI0 ...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) Table 9 Test settings TST2 TST1 TST0 MODE application mode X(1) X(1) test mode X(1) X(1) test mode X(...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) Output signals WEO (PIN 31) YO0 TO YO7 (PINS TO AND 1) Write enable output Write enable indicates the...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) Table 11 Va versus VRST SYMBOL PARAMETER MIN. UNIT t Va(min)H minimum Va HIGH time µs tsu(Va) set-up ...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) Status register Table 15 Status register usage USE ACTION Purpose internal settings Address F4 Read/w...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) Wval register (wanted value) Table 18 Wval register usage USE ACTION Purpose register for setting up ...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) CHARACTERISTICS VDD V; Tamb °C; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) PACKAGE OUTLINE QFP44: plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 x 10 x 1.75 ...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) SOLDERING Wave soldering Introduction Wave soldering is not recommended for QFP packages. This is bec...
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Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC SAA4945H (LIMERIC) DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifi...
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Philips Semiconductors – a worldwide company Argentina: see South America Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB, Tel. +31 82785, Fax. +31 Australia: 34 Waterloo Road, NORTH RYDE, NSW...
Manual Details
| Brand | Philips |
|---|---|
| Pages | 20 |
| File Size | 122.03 KB |
| Published | July 07, 2026 |
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Frequently Asked Questions
What type of noise reduction does the SAA4945H perform?
It is a 2-D adaptive vertically recursive noise reduction filter applied to Y, U, and V signals.
What are the operating voltage specifications?
The supply voltage (V_DD) range is 4.5V minimum to 5.5V maximum, with typical operation at 5.0V.
How can I control the device's write enable functionality?
Control signals include the Write Enable (WE) input and a Reset (VRST) that should be applied in the vertical blanking interval.