TSH343 STMicroelectronics, TSH343 Datasheet

no-image

TSH343

Manufacturer Part Number
TSH343
Description
280MHz single-supply triple video buffer
Manufacturer
STMicroelectronics
Datasheet

Specifications of TSH343

Bandwidth
280MHz
Slew Rate
780V/μs

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TSH343
Manufacturer:
ST
0
Part Number:
TSH343I
Manufacturer:
ST
0
Part Number:
TSH343ID
Manufacturer:
ST
0
Part Number:
TSH343IDT
Manufacturer:
ST
0
Features
Applications
Description
The 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.
March 2007
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
High-end video systems
High definition TV (HDTV)
Broadcast and graphic video
Multimedia products
280MHz single-supply triple video buffer
Rev 4
The TSH343 is available in the compact SO8
plastic package for optimum space-saving.
+Vcc
Pin1 identification
IN2
IN3
IN1
1
2
3
4
DC Shifter
Top View
SO8
6dB
6dB
6dB
TSH343
8
7
6
5
OUT1
OUT2
OUT3
GND
www.st.com
1/17
17

Related parts for TSH343

TSH343 Summary of contents

Page 1

... 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. March 2007 ...

Page 2

... Contents 1 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1 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 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2/17 TSH343 ...

Page 3

... TSH343 1 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings (AMR) Symbol V Supply voltage CC V Input voltage range in T Operating free air temperature range oper T Storage temperature stg T Maximum junction temperature j R SO8 thermal resistance junction to case thjc R SO8 thermal resistance junction to ambient area ...

Page 4

... Input step from 150Ω +1.5V 150Ω 150Ω 2V, T out amb -40°C < T < +85°C amb ) source TSH343 Min. Typ. Max. Unit 400 600 670 mV 530 18.2 35 μA 20.7 4 GΩ 14 14.9 - ...

Page 5

... TSH343 Table +5V single supply Symbol Parameter Noise and distortion eN Total input voltage noise HD2 2nd harmonic distortion HD3 3rd harmonic distortion 1. See Figure 28 and Figure 29. 2. See Figure 30 and Figure 31. 3. Non-tested value, guaranteed by design. = 25°C (unless otherwise specified) (continued) ...

Page 6

... Figure 4. 0 Small Signal -10 Vcc=5V Load=150 -20 -30 -40 -50 -60 -70 -80 -90 -100 100M 1M Figure 6. 100 10 100M 10 Gain flatness Ω 10M 100M Frequency (Hz) Cross-talk vs. frequency (amp2) Ω 2/1 2/3 10M 100M Frequency (Hz) Input noise vs. frequency Vcc=5V input in short-circuit NA 100 1k 10k 100k 1M Frequency (Hz) TSH343 1G 10M ...

Page 7

... TSH343 Figure 7. Distortion on 150Ω load - 10MHz -30 -35 Vcc=5V F=10MHz -40 input DC component = 0.65V -45 Ω Load=150 -50 -55 -60 HD2 -65 -70 -75 -80 -85 HD3 -90 -95 -100 0,0 0,5 1,0 1,5 2,0 Output Amplitude (Vp-p) Figure 9. Distortion on 150Ω load - 30MHz -10 -15 Vcc=5V -20 F=30MHz input DC component = 0.65V -25 Ω Load=150 -30 -35 -40 -45 HD2 ...

Page 8

... Vcc=5V 150 Load=150 100 100M -40 Figure 16. Input DC shift vs. temperature 0,8 0,7 0,6 0,5 0,4 0,3 0,2 3,0 3,5 4,0 4,5 5,0 -40 Figure 18. Voltage gain vs. temperature 2,05 2,04 2,03 2,02 2,01 2,00 1,99 1,98 1,97 Vcc=5V 1,96 Load=150 1,95 3,0 3,5 4,0 4,5 5,0 -40 Ω - Temperature (°C) Vcc=5V Ω Load=150 - Temperature (°C) Ω - Temperature (°C) TSH343 ...

Page 9

... TSH343 Figure 19. I vs. temperature bias Vcc=5V Ω Load=150 10 -40 - Temperature (°C) Figure 21. Supply current vs. temperature Vcc=5V no Load 10 -40 - Temperature (°C) Figure 23. Output higher rail vs. temperature 4,2 4,1 4,0 3,9 3,8 3,7 Vcc=5V 3,6 Ω Load=150 3,5 -40 - Temperature (°C) Figure 20. Gain deviation vs. temperature ...

Page 10

... Application information 3 Application information 3.1 Using the TSH343 to drive Y-Pb-Pr video components Figure 25. Shapes of video signals coming from DACs GND Figure 26. TSH343 in single supply for any DAC output video outputs Y,G (+synchro) DAC Pb,B DAC Pr,R DAC video outputs R DAC G DAC B DAC 1. See the TSH344 datasheet on st.com for more information possible to drive RGB signals with the TSH344 ...

Page 11

... STMicroelectronics reference design of STi7100 or STi7200 where the DAC output is loaded by 140Ω and the bottom of the synchronization tip is set at 10mV. Using the TSH343, an internal input DC value of 600mV is added to the video signal in order to shift the bottom from 10mV to 610mV. The shift is not based on the average of the signal, but is an analog summation component to the video signal ...

Page 12

... T-bias T-bias TSH343 TSH343 75Ω 75Ω 0 -10 -20 L= Ferrite FBMJ4516HM900 CHF=100nF -30 CLF=10uF -40 -50 -60 L=2uH CHF=100nF -70 CLF=10uF -80 100k 1M Frequency (Hz) TSH343 AGILENT AGILENT 4395A 4395A 50Ω 50Ω PSRR 10M 100M ...

Page 13

... The delay between each video component is an important aspect in high definition video systems. To properly drive the three video components without any relative delay, the TSH343 dice layout has a very symmetrical geometry. The effect is direct on the synchronization of each channel, as shown in channels when the same V between the inputs and the outputs is 4ns ...

Page 14

... JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics trademark. ECOPACK specifications are available at: www.st.com. 14/17 TSH343 ...

Page 15

... TSH343 Figure 32. SO-8 package 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° 8° 0.10 Package mechanical data 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 0.228 0.236 0.244 0.150 0.154 ...

Page 16

... Revision 1 First release of datasheet. 2 Capa-load option paragraph deleted on page 11. 3 Application information. Max limit for input DC shift reduced from 800mV to 670mV. 4 Updated Section 3.2: PSRR and improvement of power supply noise rejection on page 12 Packing Tube Tape & reel Changes . TSH343 Marking TSH343I TSH343I ...

Page 17

... TSH343 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

Related keywords