SM5302AS NPC [Nippon Precision Circuits Inc], SM5302AS Datasheet
SM5302AS
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SM5302AS Summary of contents
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... Package: 28-pin HSOP I APPLICATIONS HDTVs I LCD TVs I PDPs I Projectors I ORDERING INFORMATION Device SM5302AS 3-channel Video Buffer with Built-in wideband LPF *1 . The lowpass filter supports 480i to 1080i control bus, and the 1.8k Ω . PINOUT (Top view) = 1.8k Ω ) PACKAGE DIMENSIONS (Unit: mm) 1 ...
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BLOCK DIAGRAM VDD VSS SDA Control SCL IN1A Clamp/Bias/Direct IN1B Clamp/Bias/Direct CH-1 IN2A Clamp/Bias/Direct IN2B Clamp/Bias/Direct CH-2 IN3A Clamp/Bias/Direct IN3B Clamp/Bias/Direct CH-3 Note. The recommended value of the external resistor connected to ISET is 1.8k Ω . ...
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PIN DESCRIPTION *1 Number Name I/O 1 REF1 O − 2 VDD 3 SDA I/O 4 SCL I − 5 VSS 6 MUXSEL I 7 ADS I 8 IN1A I 9 IN1B I − 10 ISET 11 IN2A I 12 ...
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PIN EQUIVALENT CIRCUITS Number Name I/O 8 IN1A 9 IN1B 11 IN2A I 12 IN2B 13 IN3A 14 IN3B 25 OUT1A 26 OUT1B 21 OUT2A O 20 OUT2B 17 OUT3A 16 OUT3B 1 REF1 O SM5302A Equivalent circuit VCCn INnA ...
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Number Name I/O 28 REF2 O 27 REF3 3 SDA I/O 4 SCL I 6 MUXSEL 7 ADS I Note. Resistance values indicate design values. SM5302A Equivalent circuit VCC1 REF2 GND1 VCC1 REF3 GND1 VDD 250Ω SDA VSS VDD 180Ω ...
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SPECIFICATIONS Absolute Maximum Ratings = GND1 = GND2 = GND3 = 0V, VCC1 = VCC2 = VCC3 = VDD = Parameter Symbol Supply voltage V CC Input voltage V IN Storage temperature range T STG Power dissipation ...
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AC Characteristics ( 5.0V 3.0 to 5.5V 25°C, unless otherwise noted Parameter Symbol SCL clock frequency f SCL SCL hold time (start condition) t HD;STA SCL clock LOW-level pulsewidth t ...
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Analog Characteristics Analog input characteristics = 5.0V 3.0 to 5.5V 25°C, fin = 100kHz CH-1 set to clamp input, CH-2 and CH-3 set to bias input, FCDATA = 227, unless otherwise noted. ...
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Filter mode and bypass mode frequency characteristics = 5.0V 3.0 to 5.5V 25°C, fin = 100kHz CH-1 set to clamp input, CH-2 and CH-3 set to bias input, FCDATA = 227, unless ...
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Reference Voltage Characteristics (REF) = 5.0V 3.0 to 5.5V 25°C, unless otherwise noted Parameter Symbol V R1 REF output voltage Test level I : 100% of products tested at ...
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Evaluation Circuit Diagram Controller 4.7µ + 4.7µ + 4.7µ + Input 4.7µ + 4.7µ + 4.7µ Note. This is the electrical characteristics evaluation circuit only, then it is not a recommended application circuit. SM5302A 10µ ...
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FUNCTIONAL DESCRIPTION BUS Control 2 The SM5302A uses BUS interface to set the following functions. 1) Cutoff frequency 2) Output gain 3) fc mode switching (1/2 cutoff frequency switching) 4) Filter mode/filter bypass mode ...
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The ADS pin can set one of three slave addresses. Note that D0 must be “0 (Write)”. ADS HEX L 90h H 92h *1 Open 94h 2 *1. When ADS is open (94h control ...
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Flag settings (1) Cutoff frequency Register name: FCSET Flag names: FCM, FC [6:0] The FCSET register setting sets the cutoff frequency using one of two tuning adjustment functions, thus a total of 256 values are possible. The cutoff frequency is ...
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Output gain Register name: CONDITION1 Flag name: GS Flag name (4) Disable mode select Register name: CONDITION2 Flag name: PD This flag enables/disables the analog block. When the analog block is disabled, the output pins are ...
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Filter bypass mode Register name: CONDITION2 Flag name: BYPASS This flag allows the lowpass filter to be bypassed. The output gain can be switched, even in filter bypass mode. The input type, multiplexer function, and output gain can all ...
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Lowpass Filter The IC has built-in 5th-order lowpass filters with variable cutoff frequency. The frequency range is determined by the resistor (R ) connected between ISET and GND, and the cutoff frequency is set by register FCDATA ISET data. The ...
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Figure 1. Cutoff frequency vs. FCDATA (R R ISET R controls the internal current source, and its connection is essential. The recommended value is 1.8kΩ. ISET In disable mode and filter bypass mode, the ISET pin is high impedance, and ...
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Filter Bypass Mode In filter bypass mode, the lowpass filter is bypassed and the signal is input to the output buffer stage. The input type, multiplexer function, and output gain are set just as for filter mode. The cutoff frequency ...
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USAGE PRECAUTIONS Slave Address (94h) Setting When slave address 94h is used, the ADS input must be left open circuit. In this case, an external resistor should be connected as shown in figure 6 to reduce the risk of malfunction ...
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Table 3. Direct mode recommended input DC voltage range (V Mode Gain fc mode setting h0 Standard i0 0dB Half − Standard i6 6dB Half − j6 *1. Refer to figure “Sag Compensation Circuit”. ...
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TYPICAL CHARACTERISTICS V = 5.0V 5.0V 25° Gain 6 0 Phase -6 -12 -18 -24 -30 -36 -42 -48 0 Frequency [MHz] Figure 10. Gain and Phase characteristics (6dB, filter ...
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Gain 6 0 Phase -6 -12 -18 -24 -30 -36 -42 -48 0 100 Frequency [MHz] Figure 16. Gain and Phase characteristics (6dB, standard fc mode, FCDATA = 227) 12 Gain 6 0 Phase -6 -12 -18 ...
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Frequency [MHz] Figure 20. Gain vs. FCDATA, fc mode (6dB) FCDATA (1) 227 (2) 227 (3) 10 (4) 10 180 ...
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I 130 CC1 120 110 100 *2 I CC2 4.25 4.5 4.75 5 5.25 5.5 5.75 V [V] CC (6dB, FCDATA = 255) Figure 23. I vs. V CC1 CC *1. filter ...
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Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on ...