TSH343IDT ,280MHz single-supply triple video bufferApplicationsIN3■ High-end video systems 3 6dB 6 OUT3■ High definition TV (HDTV)DC Shifter5+Vcc 4 GN ..
TSH343IDT ,280MHz single-supply triple video bufferAbsolute maximum ratings (AMR)Symbol Parameter Value Unit(1)V Supply voltage 6VCC(2)V Input voltage ..
TSH343IDT ,280MHz single-supply triple video bufferElectrical characteristics . . . . . 43 Application information . . . . . 103.1 Using the ..
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UC2526AQ ,Regulating Pulse Width ModulatorUC1526AUC2526AUC3526ARegulating Pulse Width Modulator
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UC2526J , Regulating Pulse Width Modulator
UC2526J , Regulating Pulse Width Modulator
TSH343IDT
280MHz single-supply triple video buffer
March 2007 Rev 4 1/17
TSH343280MHz single-supply triple video buffer
Features Bandwidth: 280MHz 5V single-supply operation Internal input DC level shifter No input capacitor required 6dB internal gain for a matching between 3
channels Very low harmonic distortion Slew rate: 780V/μs Specified for 150Ω and 100Ω loads Min. and max. data tested during production
Applications High-end video systems High definition TV (HDTV) Broadcast and graphic video Multimedia products
DescriptionThe TSH343 is a triple single-supply video buffer
featuring an internal gain of 6dB and a large
280MHz bandwidth.
The main advantage of this circuit is that its input
DC level shifter allows for video signals on 75Ω
video lines without damage to the synchronization
tip of the video signal, while using a single 5V
power supply with no input capacitor. The DC
level shifter is internally fixed and optimized to
keep the output video signals between low and
high output rails in the best position for the
greatest linearity.
This datasheet provides information on using the
TSH343 as a Y-Pb-Pr driver for video DAC output
on a video line. See the TSH344 datasheet for R-
G-B signals.
The TSH343 is available in the compact SO8
plastic package for optimum space-saving.
TSH3432/17
Contents Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.1 Using the TSH343 to drive Y -Pb-Pr video components . . . . . . . . . . . . . . 10
3.2 PSRR and improvement of power supply noise rejection . . . . . . . . . . . . 12
3.3 Delay between channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TSH343 Absolute maximum ratings and operating conditions
3/17 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings (AMR) All voltage values, except differential voltage, are with respect to network terminal. The magnitude of input and output voltages must never exceed VCC +0.3V.
Table 2. Operating conditions Tested in full production at 0V/5V single power supply.
Electrical characteristics TSH343
4/17
2 Electrical characteristics
Table 3. VCC= +5V single supply, Tamb= 25°C (unless otherwise specified)
TSH343 Electrical characteristics
5/17 See Figure 28 and Figure29. See Figure 30 and Figure31. Non-tested value, guaranteed by design.
Table 3. VCC= +5V single supply, Tamb= 25°C (unless otherwise specified) (continued)
Electrical characteristics TSH343
6/17
Figure 1. Frequency response Figure 2. Gain flatness
Figure 3. Cross-talk vs. frequency (amp1) Figure 4. Cross-talk vs. frequency (amp2)
Figure 5. Cross-talk vs. frequency (amp3) Figure 6. Input noise vs. frequency
TSH343 Electrical characteristics
7/17
Figure 7. Distortion on 150Ω load - 10MHz Figure 8. Distortion on 100Ω load - 10MHz
Figure 9. Distortion on 150Ω load - 30MHz Figure 10. Distortion on 100Ω load - 30MHz
Figure 11. Output DC shift vs. frequency Figure 12. Slew rate
Electrical characteristics TSH343
8/17
Figure 13. Reverse isolation vs. frequency Figure 14. Bandwidth vs. temperature
Figure 15. Quiescent current vs. supply Figure 16. Input DC shift vs. temperature
Figure 17.I source vs. output voltage Figure 18. Voltage gain vs. temperature
TSH343 Electrical characteristics
9/17
Figure 19. Ibias vs. temperature Figure 20. Gain deviation vs. temperature
Figure 21. Supply current vs. temperature Figure 22. Output current vs. temperature
Figure 23. Output higher rail vs. temperature Figure 24. Gain matching vs. temperature
