sm5304a Seiko NPC Corp., sm5304a Datasheet
sm5304a
Available stocks
Related parts for sm5304a
sm5304a Summary of contents
Page 1
... OVERVIEW The SM5304AV Ω terminating resistance drive video buffer with built-in analog filter. The filter cutoff frequency, controlled by the resistance connected to RFC pin, can be set to match any system resolution. The output buffer can be selected 0dB, 6dB, and 12dB. The feedback point occurs after the external coupling capacitors, and the coupling capacitances can be reduced ...
Page 2
... VCC – 5 GND – 6 VOUT GSEL input, O: output 2. A: analog, D: digital SM5304AV VCC 8th order LPF Buffer GND 2 A/D Description A Input signal pin D Enable signal input pin (with pull-down resistor) A LPF cutoff frequency set pin – 5V supply pin – ...
Page 3
... Input leakage current 2 I LL2 HIGH-level input current 2 I IH2 LOW-level input current 2 I IL2 Pull-down resistance 1 R PD1 Pull-down resistance 2 R PD2 SM5304AV Condition θ 214 ° C/W (Note 1) × θ ja: Thermal resistance, Ta: Ambient temperature). : Power dissipation (= Condition Condition min ENABLE pin 2.4 ENABLE pin – ...
Page 4
... I : Valid for 100% product tests conducted ° 100% valid for alternative tests conducted ° C III : Guaranteed based on design and characteristics evaluation Measurement circuit 4.7µF + Input VCC R FC VCC SM5304AV Condition min = 2.7k Ω 4.5 to 5.5V – – ° C, ENABLE = “HIGH” = 4.3k Ω ...
Page 5
... Table 1. R Adjustment methods It can set up by the following methods. Since resistance affects cutoff frequency, please use a high precise thing. Fixed resistor I The frequency can be adjusted using an external resistor connected to RFC. SM5304AV and frequency control range FC R [kΩ] Cutoff frequency [MHz ...
Page 6
... DAC). In this case, the adjusting voltage must be controlled such that it does not exceed the RFC pin voltage (1.5V typ). Resistor switch control I The frequency can be adjusted by switching the resistance connected to RFC using logic voltage control. Control SM5304AV RFC RFC RFC SW SEIKO NPC CORPORATION —6 ...
Page 7
... When setting GSEL pin to open, in order to prevent incorrect operation by the external noise, it recommends connecting a capacitor between GSEL pin and GND pin. Equivalent circuit The equivalent circuit of GSEL pin and ENABLE pin is shown in figure. GSEL pin is connected only to pull- down resistor in the state of disable. ENABLE SM5304AV Gain setting 6dB 0dB 12dB High impedance output ...
Page 8
... Frequency [MHz] Figure 3. Gain vs Frequency (Rfc = 4.3kΩ −6 Rfc=10kΩ Rfc=18kΩ −12 0.1 1 Frequency [MHz] Figure 5. Gain vs Frequency (6dB) SM5304AV 90 12 6dB 0 0 −90 −12 −180 −270 −24 −360 −36 −450 −540 −48 100 0.1 Figure 2. Group Delay vs Frequency ...
Page 9
... Rfc [kΩ] Figure Rfc 4 [V] CC Figure 11 SM5304AV −50 100 =5.5V 39 =5.0V 37 =4.5V 35 −50 100 15 Rfc=2.7kΩ Rfc=4.3kΩ −3 5.5 6 0.2 0.4 Rfc=2.7kΩ ...
Page 10
... V [V] CC Figure 13. Gain Input signal frequency=1MHz 3.75 3.5 3.25 3 2.75 2 [V] CC Figure 15. Vmaxout vs V TYPICAL CONNECTION ENABLE Input + VIN 4.7µF Clamp RFC R FC SM5304AV 15 12 12dB (V =0.6Vp- 6dB (V =1.2Vp- 0dB (V =1.4Vp-p) IN −3 5.5 6 − 10µ 0.1µF VCC GSEL ...
Page 11
... The following method is effective, in order to lower thermal resistance and to prevent the rise of junction tem- perature. • Wiring area connected to the pin of SM5304AV is made widely. • To cool down, use the cooling fan etc. SM5304AV VCC Tjmax − θja Tjmax = 125 C, θ ...
Page 12
... 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. SM5304AV SEIKO NPC CORPORATION 15-6, Nihombashi-kabutocho, Chuo-ku, ...