TSH340 TSH340ILT TSH340ID TSH340IDT TSH340I 0016023/C - Datasheet Archive

 

320MHz Single Supply Video Buffer with Low In/Out Rail Bandwidth: 320MHz Single supply operation down to 3V Low input &

 

TSH340 TSH340 320MHz Single Supply Video Buffer with Low In/Out Rail Bandwidth: 320MHz Single supply operation down to 3V Low input & output rail Very low harmonic distortion Slew rate: 780V/µs Voltage input noise: 7nV/Hz Specified for 150 and 100 loads Internal gain of 6dB Compatible with the PCB layout of a single op-amp Tested on 5V power supply Data min. and max. are tested during production Pin Connections (top view) OUT 1 5 +VCC GND 2 IN 3 4 NC SOT23-5 Description NC 1 8 NC The TSH340 TSH340 is a single supply video buffer featuring an internal gain of 6dB and a large bandwidth of 320MHz for only 9.8mA of quiescent current. NC 2 7 +Vcc IN 3 6 OUT An advantage of this circuit is its input and output negative rail feature, which is very close to GND in single supply. This rail is tested and guaranteed during production at 60mV maximum from GND on a 150 load. This allows a good output swing which fits perfectly when driving a video signal on a 75 video line. Chapter 5 of this datasheet gives technical support when using the TSH340 TSH340 as a driver for video DAC output on a video line. In particular, this chapter focuses on applying a video signal DC shift to avoid any clamping of the synchronization tip. 5 NC GND 4 SO8 Applications High-end video systems High Definition TV (HDTV) Broadcast and graphic video Multimedia products The TSH340 TSH340 is available in tiny SOT23-5 and SO8 plastic packages. Order Codes Part Number Temperature Range TSH340ILT TSH340ILT TSH340ID TSH340ID TSH340IDT TSH340IDT -40°C to +85°C April 2005 Package Packaging Marking SOT23-5 Tape & Reel Tube Tape & Reel K306 TSH340I TSH340I TSH340I TSH340I SO-8 Revision 2 1/13 TSH340 TSH340 Absolute Maximum Ratings 1 Absolute Maximum Ratings Table 1. Key parameters and their absolute maximum ratings Symbol VCC Vin Parameter Supply voltage 2 Value Unit 6 1 V Input Voltage Range Operating Free Air Temperature Range -0.2 to +3 V Toper -40 to +85 °C Tstd Storage Temperature -65 to +150 °C 150 °C 80 75 °C/W 250 175 °C/W 500 715 2 1.5 200 mW Tj Rthjc Rthja Pmax. ESD Maximum Junction Temperature Thermal Resistance Junction to Case SOT23-5 SO8 Thermal Resistance Junction to Ambient Area SOT23-5 SO8 Maximum Power Dissipation (@Ta=25°C) for Tj=150°C SOT23-5 SO8 CDM: Charged Device Model HBM: Human Body Model MM: Machine Model 1) All voltage values, except differential voltage, are with respect to network terminal. 2) kV kV V The magnitude of input and output voltage must never exceed VCC +0.3V. Table 2. Operating conditions Symbol Parameter VCC 1) Power Supply Voltage Vicm Common Mode Input Voltage Tested in full production at 0V/5V single power supply 2/13 Value Unit 1 3 to 5.5 -0.4 to 3 V V Electrical Characteristics TSH340 TSH340 2 Electrical Characteristics Table 3. VCC = +5V, Tamb = 25°C (unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. -5 +30 Unit DC Performance VOS Iib PSR ICC Output Offset Voltage1 no Load, Tamb -30 -40°C < Tamb < +85°C Input Bias Current -6.8 Tamb, Vicm=0.6V 6 -40°C < Tamb < +85°C Power Supply Rejection Ratio 7.2 Vcc=200mVp-p, F=1MHz -90 20 log (Vcc/Vout) Total Supply Current 16 no Load, Vin=100mV mV µA dB 9.8 1.95 12.8 mA 2 2.05 V/V G DC Voltage Gain RL = 150 Rin Input Resistance Tamb 8 M Cin Input Capacitance Tamb 3.2 pF Dynamic Performance and Output Characteristics -3dB Bandwidth Bw FPBW SR Small Signal Vout=20mVp Vicm=0.6V, RL = 150 Gain Flatness @ 0.1dB Small Signal Vout=20mVp Vicm=0.6V, RL = 150 Full Power Bandwidth Vicm=0.6V, VOUT = 2Vp-p, RL = 150 Slew Rate Vicm=0.6V, VOUT = 2Vp-p, RL = 150 190 320 MHz 63 130 200 MHz 780 V/µs VOH High Level Output Voltage RL = 150 VOL Low Level Output Voltage RL = 150 40 Output Short Circuit Current (Isource) Tamb 100 -40°C < Tamb < +85°C 90 IOUT Output Current Vout=2Vp, Tamb 3.7 45 3.9 V 60 mV mA 87 mA Noise and Distortion eN Equivalent Input Noise Voltage F = 100kHz 7 nV/Hz iN Equivalent Input Noise Current F = 100kHz 1.5 pA/Hz 2nd Harmonic Distortion VOUT = 2Vp-p, RL = 150 F= 10MHz, -85 dBc VOUT = 1Vp-p, RL = 150 F= 10MHz, -75 dBc HD2 HD3 1) 3rd Harmonic Distortion Output Offset Voltage is determined from the following expression: VOUT =G.VIN+VOS 3/13 TSH340 TSH340 Electrical Characteristics Figure 1. Frequency response Figure 4. Frequency response on capa-load 20 16 14 Frequency Response (dB) 12 10 8 6 Gain (dB) 4 2 0 -2 -4 -6 -8 -10 Vcc=5V Load=100 or 150 SO8 and SOT23-5 -12 -14 -16 1M 10 0 C=22pF Riso=22 C=47pF Riso=15 -10 -20 1M 100M 10M 100M Frequency (Hz) Frequency (Hz) Figure 2. Gain flatness - SOT23-5 Figure 5. Gain flatness - SO8 7,0 7,0 Load=150 6,8 Load=150 6,8 6,6 6,4 6,4 Gain (dB) 6,6 Gain (dB) C=0 Riso=0 Vcc=5V Load=Riso + C//1k (to ground) 10M C=1pF Riso=0 C=10pF Riso=22 6,2 6,0 5,8 Load=100 5,6 6,2 6,0 5,8 Load=100 5,6 5,4 5,4 5,2 5,2 Vcc=5V 5,0 1M 10M Vcc=5V 5,0 1M 100M 10M 100M Frequency (Hz) Frequency (Hz) Figure 3. Total input noise vs. frequency Figure 6. Positive and negative slew rate 3,0 2,5 Output Response (V) Input Noise (nV/VHz) non-inverting input in short-circuit Vcc=5V 100 Vcc=5V Load=100 or 150 2,0 SR+ 1,5 1,0 0,5 SR- 10 100 1k 10k 100k Frequency (Hz) 4/13 1M 10M 0,0 -5ns -4ns -3ns -2ns -1ns 0s Time (ns) 1ns 2ns 3ns 4ns 5ns Electrical Characteristics TSH340 TSH340 Figure 7. Distortion on 100 load Figure 10. Distortion on 150 load -30 -30 -35 -35 -40 -45 -55 -60 -65 -70 -75 HD2 (10MHz) -80 -50 HD2 & HD3 (dBc) HD2 & HD3 (dBc) -45 HD3 (30MHz) -50 HD3 (30MHz) -40 HD2 (30MHz) -55 -60 HD2 (30MHz) -65 HD3 (10MHz) -70 -75 -80 -85 -85 -90 HD3 (10MHz) -95 -90 Vcc=5V Load=100 Vcc=5V Load=150 HD2 (10MHz) -95 -100 -100 0 1 2 3 0 4 1 2 3 4 Output Amplitude (Vp-p) Output Amplitude (Vp-p) Figure 8. Output lower rail vs. frequency Figure 11. Output voltage swing vs. Vcc 500 5 Vcc=5V Load=100 or 150 4 Vout max (Vp-p) Vol (mV) 400 300 200 2 1 100 0 10k 3 100k 1M 10M 0 3,00 100M F=30MHz Load=100 or 150 3,25 3,50 Frequency (Hz) 3,75 4,00 4,25 4,50 4,75 5,00 Vcc (V) Figure 9. Output voltage swing vs. frequency Figure 12. Quiescent current vs. vcc 5 20 no load 4 3 Icc (mA) Vout max. (Vp-p) 15 2 10 5 1 Vcc=5V Load=100 or Load=150 0 1M 10M Frequency (Hz) 0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0 Vcc (V) 5/13 TSH340 TSH340 Electrical Characteristics Figure 13. Isource Figure 16. Reverse isolation vs. frequency 0 0 -10 +5V -20 VOH without load -20 Isource -40 V +3V -50 -40 Gain (dB) Isource (mA) -30 0V -60 -70 -60 -80 -90 -80 -100 Small Signal Vcc=5V Load=100 -110 -120 0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 -100 1M 5,0 10M 100M 1G Frequency (Hz) V (V) Figure 14. Bandwidth vs. temperature Figure 17. Voltage gain vs. temperature 2,05 500 2,04 450 2,03 400 Gain (dB) Bw (MHz) 2,02 350 300 250 2,01 2,00 1,99 1,98 200 1,97 Vcc=5V Load=150 150 100 -40 Output: short-circuit Vcc=5V 1,96 -20 0 20 40 60 1,95 -40 80 -20 0 20 40 60 80 60 80 Temperature (°C) Temperature (°C) Figure 15. Output offset vs. temperature Figure 18. Ibias vs. temperature 7,0 0 6,5 6,0 -1 IBIAS (µA) Vos (mV) 5,5 -2 -3 5,0 4,5 4,0 -4 3,5 Vcc=5V Load=150 -5 -40 -20 0 20 40 Temperature (°C) 6/13 60 80 3,0 -40 Vcc=5V Load=150 -20 0 20 40 Temperature (°C) Electrical Characteristics TSH340 TSH340 Figure 19. Supply current vs. temperature 12 ICC (mA) 11 10 9 8 7 -40 Vcc=5V no Load -20 0 20 40 60 80 Temperature (°C) Figure 20. Output lower rail vs. temperature 0,10 VOL (V) 0,08 Vcc=5V Load=150 0,06 0,04 0,02 0,00 -40 -20 0 20 40 60 80 Temperature (°C) Figure 21. Output higher rail vs. temperature 4,50 VOH (V) 4,25 4,00 3,75 Vcc=5V Load=150 3,50 -40 -20 0 20 40 60 80 Temperature (°C) 7/13 TSH340 TSH340 Evaluation Boards 3 Evaluation Boards An evaluation board kit optimized for high-speed operational amplifiers is available (order code: KITHSEVAL/STDL). The kit includes the following evaluation boards, as well as a CD-ROM containing datasheets, articles, application notes and a user manual: SOT23_SINGLE_HF BOARD: Board for the evaluation of a single high-speed op-amp in SOT23-5 package. SO8_SINGLE_HF: Board for the evaluation of a single high-speed op-amp in SO8 package. SO8_DUAL_HF: Board for the evaluation of a dual high-speed op-amp in SO8 package. SO8_S_MULTI: Board for the evaluation of a single high-speed op-amp in SO8 package in inverting and non-inverting configuration, dual and signle supply. SO14_TRIPLE: Board for the evaluation of a triple high-speed op-amp in SO14 package with video application considerations. Board material: 2 layers FR4 (r=4.6) epoxy 1.6mm copper thickness: 35µm Figure 22: Evaluation kit for high speed op-amps 8/13 Power Supply Considerations TSH340 TSH340 4 Power Supply Considerations Correct power supply bypassing is very important for optimizing performance in high-frequency ranges. Bypass capacitors should be placed as close as possible to the IC pins to improve high-frequency bypassing. A capacitor greater than 10µF is necessary to minimize the distortion. For better quality bypassing, a capacitor of 10nF is added using the same implementation conditions. Bypass capacitors must be incorporated for both the negative and the positive supply. On the SO8_SINGLE_HF board, these capacitors are C8 and C6. Figure 23: Circuit for power supply bypassing +VCC 10microF + 10nF +VCC TSH340 TSH340 GND 9/13 TSH340 TSH340 Using the TSH340 TSH340 to Drive Video Signals 5 Using the TSH340 TSH340 to Drive Video Signals Figure 24. Implementation of the video driver on output video DACs Volt 2.250V Video Signal Volt 250mV Video Signal time +5V 75 6dB LPF 125mV time Reconstruction Filtering Video DAC 1.125V 75 Cable 1Vpp 75 1Vpp 2Vpp VOL(100MHz) = 180mV (Figure 8) To drive the video signal properly, the output of the driver must be at least equal to 250mV (assuming VOS and VOL variations). 1st solution: Set the video DAC 0-IRE output level to 125mV. White Level 100 IRE Image Content Black Level 30 IRE 1Vp-p 300mV 0 IRE 125mV 0V Synchronization Tip 2nd solution: Implementation of a DC component in the input of the driver. Volt Video Signal 2.250V Volt 250mV +5V 33uF Video DAC Reconstruction Filtering LPF 1Vpp 6dB Video Signal time 10/13 125mV time 75 75 Cable 1Vpp 75 1k 2Vpp DC component =125mV 1.125V Package Mechanical Data TSH340 TSH340 6 Package Mechanical Data 6.1 SO-8 package SO-8 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. MAX. A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.04 0.010 A2 1.10 1.65 0.043 0.065 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 4.80 5.00 0.189 0.197 E 3.80 4.00 0.150 0.157 e 1.27 0.050 H 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 k ddd 8° (max.) 0.1 0.04 0016023/C 0016023/C 11/13 TSH340 TSH340 Package Mechanical Data 6.2 SOT23-5L (5-pin) package SOT23-5L MECHANICAL DATA mm. mils DIM. MIN. TYP MAX. MIN. TYP. MAX. A 0.90 1.45 35.4 57.1 A1 0.00 0.15 0.0 5.9 A2 0.90 1.30 35.4 51.2 b 0.35 0.50 13.7 19.7 C 0.09 0.20 3.5 7.8 D 2.80 3.00 110.2 118.1 E 2.60 3.00 102.3 118.1 E1 1.50 1.75 59.0 68.8 e 0 .95 37.4 e1 1.9 74.8 L 12/13 0.35 0.55 13.7 21.6 TSH340 TSH340 7 Revision History Date Revision Description of Changes 01 Jan. 2005 1 First release corresponding to Preliminary Data version of datasheet. 23 Mar. 2005 2 Datasheet of mature, full-specification product. Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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