sm5312a Seiko NPC Corp., sm5312a Datasheet
sm5312a
Available stocks
Related parts for sm5312a
sm5312a Summary of contents
Page 1
... OVERVIEW The SM5312A is a 3-channel video buffer with built-in 5th-order lowpass filters. The SM5312A outputs Y, C, and composite signals at the same time. Composite signal is outputted mixing Y and C signals. Any channels drive maximum 2 loads. FEATURES Supply voltage: 5V ± 10% I Output gain: 6 ± 0.5dB, 0 ± 0.5dB I Filter passband ( ± ...
Page 2
... GND1 22 YOUTA O 23 YOUTB – *1. I: input, Ip: input with pull-down resistor, O: output *2. NC: Leave open or connect to ground (we recommended to connect to ground). SM5312A VCC1 VCC2 VCC3 LPF 0dB/ − 6dB (6MHz) 6dB − 6dB 12dB LPF 0dB/ 6dB − 6dB ...
Page 3
... COUT O 19 YCMIXA 20 YCMIXB O 22 YOUTA 23 YOUTB *1. I: input, Ip: input with pull-down resistor, O: output Note. Resistance values indicate design values. SM5312A Equivalent circuit 130Ω 1kΩ 30kΩ 20kΩ 20kΩ 130Ω 200Ω 750Ω 5.5kΩ ...
Page 4
... This item shows the maximum value of input amplitude which meets the output distortion ratio shown in the condition column. When the signal ampli- tude that exceeds this specification value is input, the output distortion ratio increases. When using this device, the input signal level should be set to amplitude below specification value (max). SM5312A Condition YIN, CIN, ENABLE, GSEL pins Condition = 1 ...
Page 5
... TALK ∆T Group delay deviation GD Test level I : 100% of products tested 25° Guaranteed as result of design and characteristics evaluation. MEASUREMENT CIRCUIT + YIN 4.7µF 75Ω CIN 0.1µF 75Ω SM5312A = 1.0Vp- 75Ω, unless otherwise noted Condition Min = fin 6MHz/100kHz –1.5 = fin 27MHz/100kHz 30 ...
Page 6
... YOUTA and YOUTB are short-circuited (figure 2). YOUTA 100µF + YOUTB 22µF + Figure 1. Sag compensation circuit capacitor connection SM5312A Function H Y, YCMIX, C enable Y, YCMIX, C disable L (The outputs are in high-impedance state when disabled.) Function H All output gain: 0dB ...
Page 7
... For actual use, the decoupling capacitors of suitable capacitance value should be connected between supply pins. 3. The capacitance values (100µF, 22µF) in this diagram are recommended capacitor (0.1µF recommended) should be connected between the unused input terminals and GND. 5. The NC pins should be open or connect to GND (we recommended to connect to GND). SM5312A + 22µF + ...
Page 8
... V [V] CC Figure 3. Gain vs. V (0dB mode) CC 0.5 0.4 0.3 0.2 0.1 MIX( MIX(C) –0.1 –0.2 –0.3 –0.4 –0.5 –40 – [°C] Figure 5. Gain vs. Ta (0dB mode) SM5312A = 1.0Vp- 75Ω, unless otherwise noted 6.5 6.4 6.3 6.2 6.1 6 5.9 5.8 5.7 5.6 5.5 5 Figure 4. Gain vs. V 6.5 6.4 6.3 6.2 6.1 MIX( 5.9 Y MIX(C) 5.8 5 ...
Page 9
... Frequency [MHz] Figure 9. Frequency characteristics 120 100 MIX(Y, Frequency [MHz] Figure 11. Group delay (0dB mode) SM5312A –60 –40 – Figure 6dB Mode 3 0 0dB Mode –3 –6 100 0 ...
Page 10
... Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. SM5312A SEIKO NPC CORPORATION 15-6, Nihombashi-kabutocho, Chuo-ku, ...