STEVAL-CCA014V1

STEVAL-CCA014V1 Triple video buffer with filter for HD demonstration board based on the TSH345 Data brief Features ■ 4.5 V to 5.5 V single supply operation ■ R-G-B, Y-Pb-Pr, Y-C-CVBS, HD driving ■ 3 matched 6 dB amplifiers ■ 3 internal input DC level shifter ■ Specified for 150 Ω loads ■ No input capacitor is required ■ Very low harmonic distortion ■ Each output can drive AC/DC coupled 150 Ω loads ■ Tested on 5 V power supply ■ Standby mode ■ Mux on input ■ RoHS compliant ) s ( ct u d o ) (s r P e s b O t e l o STEVAL-CCA014V1 t c u Description This demonstration board is designed to evaluate the TSH345, a single supply triple video buffer featuring an internal gain of 6 dB and an internal low pass filter of 36 MHz cut-off frequency for each channel to fit with high definition requirements for video line interfaces. d o r P e t e l o s b O June 2009 Doc ID 15862 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 Doc ID 15862 Rev 1 BNC J6 R6 75R R5 75R +VCC +VCC +VCC +VCC S2 J10 BN BNC R3 R31 nc R18 R1 nc R32 R3 47K +VCC +VCC +VCC t e l o +VCC R12 nc R17 R1 nc R1 R16 nc R15 R1 nc R1 R14 nc 7 6 5 4 3 2 1 J11 BN BNC R3 R33 nc S0 C7 100nF P e +VCC R11 nc R10 nc R9 nc R8 nc R13 R1 nc R34 R3 47K VCC B2in B2i B1in B1i G2in G2i G1in G1i R2in R2i R1in R1i IC IC1 TSH345 +6dB MUXLPF MUX LPF +VCC J12 BN BNC R3 R35 nc S1 +6dB MUXLPF MUX LPF DC Shif Shift +6dB MUXLPF MUX LPF +VCC Rout 12 C8 100uF +VCC Gout 47K 8 10 +VCC GND Bout R36 R3 11 0R LR1 C9 10uF J15 J1 r P e t e l o 0R CR6 0R CR5 0R CR4 0R CR3 0R R7 nc d o r R4 75R R3 75R +VCC CR2 0R t c u BNC J5 BNC J4 BNC J3 R2 75R R1 75R CR1 s b O BNC J2 BNC J1 ) (s s b O Mux FS0 FS1 J14 R23 R2 75R R28 R2 nc R29 R2 75R R2 R25 nc R26 R2 75R R2 R22 nc R30 R3 nc R27 R2 nc R24 R2 nc nc C12 R21 0R nc C11 R20 0R nc C10 R19 0R BNC J9 BNC J8 BNC J7 Figure 1. 9 14 13 1 2/4 1 2 1 1 J13 Circuit schematics STEVAL-CCA014V1 Circuit schematics Schematic diagram ) s ( ct u d o AM03805v1 STEVAL-CCA014V1 2 Revision history Revision history Table 1. Document revision history Date Revision 11-Jun-2009 1 Changes Initial release. ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 15862 Rev 1 3/4 STEVAL-CCA014V1 ) s ( ct Please Read Carefully: u d o 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. r P e All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. t e l o No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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