TSH346 STMicroelectronics, TSH346 Datasheet
TSH346
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TSH346 Summary of contents
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... The TSH346 is a triple single-supply video buffer featuring an internal gain and a 36 MHz filtering for HD video outputs on 75-Ω video lines. The TSH346 is ideal to drive either YUV, YPbPr or RGB signals from video DAC outputs. The main advantage of this circuit is that its input DC level shifter allows for video signals on 75-Ω ...
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... Power supply voltage CC 1. Tested in full production with single power supply. 2/18 Parameter (1) (2) = 25° C) for T amb CC Parameter Value 6 2.5 -40 to +85 -65 to +150 150 28 150 = 150° 500 2 100 +0.3 V. Value (1) 4.5 to 5.5 TSH346 Unit V V °C °C °C °C/W °C Unit V ...
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... TSH346 2 Electrical characteristics Table single supply Symbol Parameter DC performance V Output DC shift DC I Input bias current ib R Input resistance in C Input capacitance in I Total supply current voltage gain Output characteristics V High level output voltage OH V Low level output voltage ...
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... Figure 4. 0 Vcc=5V -10 F=10MHz -20 Load=150 -30 -40 HD2 -50 -60 -70 -80 HD3 -90 -100 2.5 3.0 3.5 4.0 0.0 Figure 6. -40 Input: 1Vp-p Vcc=5V No load Vcc=5V -45 Load=150 -50 -55 -60 -65 -70 -75 100k 1M 1M Gain flatness Ω 1M Frequency (Hz) Distortion 10 MHz (HD) Ω 0.5 1.0 1.5 2.0 2.5 3.0 Output Amplitude (Vp-p) Channel crosstalk vs. frequency Ω 10M Frequency (Hz) TSH346 10M 3.5 4.0 100M ...
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... TSH346 Figure 7. Gain vs. input amplitude 2.10 Vcc=5V Ω Load=150 2.05 2.00 1.95 1.90 0.0 0.2 0.4 0.6 0.8 Vin (Vp-p) Figure 9. Current consumption vs. supply 50 Vcc=5V no Load 0.0 0.5 1.0 1.5 2.0 2.5 Vcc (V) Figure 11. Filtering vs. temperature 60 Vcc=5V Ω Load=150 -40 - Temperature (°C) Figure 8. 5.0 Vcc=5V 4.5 Load=150 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 1.0 1.2 1.4 0.0 Figure 10. Supply current vs. temperature 50 Vcc= Load ...
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... Figure 16. Isource vs. temperature 120 110 100 Vcc= -40 Figure 18. VOH vs. temperature 4.00 3.95 3.90 3.85 3.80 3.75 3.70 3.65 Vcc=5V Load=150 3. -40 Ω - Temperature (°C) - Temperature (°C) Ω - Temperature (°C) TSH346 ...
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... TSH346 Figure 19. VOL vs. temperature Vcc=5V Ω Load=150 30 -40 - Temperature (°C) Figure 20. Gain vs. temperature 2.20 2.15 2.10 2.05 2.00 1.95 1.90 Vcc=5V 1.85 Load=150 1. -40 Electrical characteristics Ω - Temperature (°C) 80 7/18 ...
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... A coil can be added in order to better reject the noise from the supply and to prevent current peaks as much as possible. Figure 21. Circuit for power supply bypassing 8/18 ) greater than 10 µ must be placed as close as possible to the IC pin Coil TSH346 B 5 AM00824 TSH346 ...
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... Figure 23. Power supply noise rejection Power supply considerations and improvement of the PSRR T-bias + Coil TSH346 50 0 Vcc=5V(dc)+0.2Vp-p(ac) Decoupling capacitor: 10µF+100nF -10 Ω Load=150 Δ Noise rejection=20 log ( VCC/ ...
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... Using the TSH346 to drive YC, CVBS, YUV, YPbPr and RGB video components 4 Using the TSH346 to drive YC, C RGB video components Figure 24. Implementation of the video driver on output video DACs Reconstruction filtering Y Video LPF DAC 1 Vpp Reconstruction filtering Pb Video LPF DAC 0.7 Vpp 0. Reconstruction filtering ...
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... c.t ip The TSH346 is used to drive high definition video signals MHz. It can drive components such as YPbPr and RGB where the bottom of the signal is close to zero volts. An internal input DC value is added to the video signal in order to shift the bottom from GND. ...
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... Using the TSH346 to drive YC, CVBS, YUV, YPbPr and RGB video components Figure 26. Flexible solution for SD and HD signals HD R DAC G DAC B DAC SD Y,G DAC Pb,B,C DAC Pr,R,C DAC SD C VBS DAC 12/18 +5V 75Ω 150Ω 150Ω 75Ω 150Ω 150Ω TSH346 TSH346 75Ω ...
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... TSH346 Using the TSH346 to drive YC, CVBS, YUV, YPbPr and RGB video components 4.1 Output capacitor The output can be either DC- or AC-coupled, and can be directly connected to the line via a 75-Ω resistor (4) (Figure DC components in the load. Assuming a 150-Ω load, a coupling capacitor of 220 µF can be used to provide a very low cut-off frequency close Figure 27 ...
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... Package information 5 Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. 14/18 TSH346 ® ...
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... TSH346 Figure 29. SO-8 package mechanical drawing Table 4. SO-8 package mechanical data Ref ccc Dimensions Millimeters Min. Typ. Max. 1.75 0.10 0.25 1.25 0.28 0.48 0.17 0.23 4.80 4.90 5.00 5.80 6.00 6.20 3.80 3.90 4.00 1.27 0.25 0.50 0.40 1.27 1.04 0 8° 0.10 Package information Inches Min. Typ. Max. 0.069 0.004 0.010 0.049 0.011 0.019 0.007 0.010 0.189 0.193 0.197 ...
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... Ordering information 6 Ordering information Table 5. Order codes Part number TSH346ID TSH346IDT 16/18 Temperature Package range -40°C to +85°C SO-8 TSH346 Packing Marking Tube TSH346I Tape & reel TSH346I ...
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... TSH346 7 Revision history Table 6. Document revision history Date 29-May-2007 16-Dec-2008 Revision 1 Initial release. Added curves in Chapter 2: Electrical 2 Added all test limits in Revision history Changes characteristics. Table 3. 17/18 ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 18/18 Please Read Carefully: © 2008 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com TSH346 ...