HV264DB1 Supertex inc. Quad, High Voltage Amplifier Array Demo Board General Description Specifications The Supertex HV264TS-G is a quad high voltage amplifier Parameter Value array device in a 24-pin TSSOP package. The HV264DB1 V high voltage supply 200V PP demo board provides a platform to evaluate this device. This demoboard requires only a minimum setup including V low voltage supply 4.5 to 5.5V DD a V low voltage supply, a V high voltage supply, and DD PP HV output voltage swing 1.0V to V - 10V OUT PP a signal source. The demoboard provides the input/output connections through two 6-pin headers. V Input signal range 0 to V - 1.5V IN DD 66.7V/V with internal A closed loop gain For detailed electrical performance, please refer to the V feedback resistors HV264 datasheet. Typical SR output slew rate 9.0V/s I output peak current 3.0mA PEAK Board Layout Acceptable Power Up Sequences Pin Name Description 1) V 2) V 3) Inputs DD PP VPP High voltage positive supply 1) V 2) Inputs 3) V DD PP VDD Low voltage positive supply Acceptable Power Down Sequences IN1 to IN4 Amplifier inputs 1) Inputs, 2) V ) V PP DD HVOUT1 to HVOUT4 Amplifier outputs 1) V ) Inputs) V PP DD GND Device ground Gain Setting Power Up/Down Sequence The HV264 quad amplifier array has the internal built-in gain The device can be damaged due to an improper power up / setting resistors available with a fixed gain of 66.7V/V +/- 5%. down sequence. To prevent damage, please follow the ac- External gain setting resistors can be used for applications ceptable power up / down sequences. An external diode that require better tolerance or a different closed loop gain. An across VPP and VDD in included on the board, where the example is shown in the following schematics. Fig. 1 shows anode of the diode is connected to VDD and the cathode is the schematics of the demoboard. The external resistor val- connected to VPP. Any low current high voltage diode will be ues and tolerances can be selected to meet different gain set- adequate. ting and precision requirements as shown in Fig. 2. Doc. DSDB-HV264DB1 Supertex inc. NR060613 www.supertex.comHV264DB1 Schematics V V V V DD PP DD PP C1 D1 C2 C1 C2 D1 619 619 VDD VPP VDD VPP HV264 HV264 2 V 1 2 V 1 R9 IN IN HV 1 + + HV 1 = IN1 + 1 OUT V 1 OUT OUT 23 V 1 23 OUT R1 - - R9 R9 0 65.7R FB1 22 65.7R FB1 22 R5 R5 R R NA 0 R1 RGND1 3 RGND1 3 R1 0 4 V 2 V 2 IN 4 R10 IN + HV 2 HV 2 = IN2 + 1 OUT V 2 + OUT 21 V 2 21 OUT OUT R2 - - R10 R10 0 65.7R 65.7R FB2 20 FB2 20 R6 R6 R R NA 0 R2 RGND2 5 RGND2 5 R2 0 8 V 3 V 3 R11 IN 8 IN HV 3 + OUT + HV 3 = IN3 + 1 V 3 OUT OUT 17 V 3 17 R3 OUT - - R11 R11 0 65.7R FB3 16 65.7R FB3 16 R7 R7 R NA R 0 R3 RGND3 9 R3 RGND3 9 0 10 V 4 V 4 IN 10 R12 IN HV 4 + OUT HV 4 = IN4 + 1 V 4 + 15 OUT OUT V 4 15 R4 OUT - - R12 R12 0 65.7R FB4 14 65.7R FB4 14 R8 R R8 R NA R4 0 RGND4 11 RGND4 11 R4 0 GND HVGND GND HVGND 718 718 Fig. 1. Demo Board Resistor Settings Fig. 2. High Precision Gain Settings Using External Resistors Bill of Materials Item RefDes Description Package Manufacturer Part 0.1F +/-10%, 25V X7R 1 C1 0805 Any --- chip capacitor 1.0nF +/-10%, 250V X7R 2 C2 0805 Any --- chip capacitor 400V, 1.0A, 3 D1 SMA Any USIG general purpose diode R1 ,R2, R3, R4, R9, 4 0 chip resistors 0805 Any --- R10, R11, R12 5 R5, R6, R7, R8 chip resistors (not installed) 0805 Any --- 6 U1 225V, 3.0mA amplifier array 24-pin TSSOP Supertex HV264TS-G Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives an adequate product liability indemnification insurance agreement. Supertex inc. does not assume responsibility for use of devices described, and limits its liability to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com) 2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited. Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 Doc. DSDB-HV264DB1 NR060613 www.supertex.com 2