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SM5302AS Datasheet(PDF) 1 Page - Nippon Precision Circuits Inc |
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SM5302AS Datasheet(HTML) 1 Page - Nippon Precision Circuits Inc |
1 / 26 page SM5302A NIPPON PRECISION CIRCUITS INC.—1 3-channel Video Buffer with Built-in wideband LPF OVERVIEW The SM5302A is a 3-channel video buffer with built-in 5th-order lowpass filters. The lowpass filter cutoff fre- quency range can be linearly controlled from 4.8MHz to 43MHz*1. The lowpass filter supports 480i to 1080i format, video signal equipment analog input/outputs. For video input systems, the device functions as a next- stage ADC system anti-aliasing filter. For video output systems, the filter removes video DAC aliasing and external noise and can drive a maximum of two 75 Ω terminated loads. The cutoff frequency, signal input type, and output gain switching can be controlled using an I2C*2 control bus, and the I2C slave address can be set by ADS (3-state input) to allow a maximum of three devices to be used simultaneously. *1. When the resistor connected to ISET (RISET) is 1.8kΩ. *2. I2C BUS is a registered trademark of Philips Electronics N.V. FEATURES I Supply voltages • Analog: 4.75 to 5.25V • Digital: 3.0 to 5.5V I Lowpass filter with linearly adjustable cutoff fre- quency (256 values) • Cutoff frequency range: 4.8MHz to 43MHz (RISET = 1.8kΩ) I Filter bypass mode function for display specifica- tions up to SXGA resolution • Passband: 80MHz (typ) I Half fc mode switch function (CH-2, CH-3) suit- able for digital component signals I 2-system input multiplexer function (switchable using I2C or MUXSEL input) I Video input pins can be independently set to sync- tip clamp/bias/direct inputs I Maximum two 75 Ω terminated load drive capability I Output gain switching: 0dB/6dB I Disable function • ≤ 300µA current consumption when disabled I Output sag compensation circuit built-in I I2C interface control • Slave address: 90h, 92h, or 94h (up to three devices can be used simultaneously, selected by ADS input) • Data transfer rate: Fast mode (up to 400kbit/s) I Operating ambient temperature range: 0 to 70 °C I Package: 28-pin HSOP APPLICATIONS I HDTVs I LCD TVs I PDPs I Projectors ORDERING INFORMATION PINOUT (Top view) PACKAGE DIMENSIONS (Unit: mm) Device Package SM5302AS 28-pin HSOP VCC2 1 GND1 OUT1B OUT1A REF3 REF2 REF1 VDD SDA MUXSEL OUT2A OUT2B GND2 VCC3 OUT3A OUT3B GND3 IN3B IN2B IN3A IN2A ISET VSS ADS IN1B IN1A SCL VCC1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1.3TYP 0.8 18.6 ± 0.3 5.15 0.35 ± 0.05 0.10 0.12 M 0.15 − 0.05 + 0.1 0 to 10 ° |
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