CLC730131

Quad TSSOP Op Amp Evaluation Board Part Number CLC 730131 February 2002 POW ER SUPPLY CONNECTIONS GND +5V +5V -5V -5V U1-A 3 IN1 2 RIN1 + - 1 ROUT1 OUT1 RF1 RG1 U1-B 5 IN2 6 R IN2 + - 7 ROUT2 OUT2 RF2 RG2 U1-C 10 IN3 9 R IN3 + - 8 ROUT3 OUT3 RF3 RG3 U1-D 12 IN4 13 R IN4 + - 14 ROUT4 OUT4 RF4 RG4 POW ER SUPPLY PINS COMMON TO ALL CHANNELS +5V 4 U1-E -5V C4 6.8µF C1 0.1µF + C3 6.8µF 11 + C2 0.1µF BOARD MOUNTING HOLES Figure 1: Non-Inverting Op Amp Configuration (Default Board Configuration)  2002 National Semiconductor Corporation www.national.com POWER SUPPLY CONNECTIONS GND +5V +5V -5V -5V U1-A 2 3 R IN 1 + - ROUT1 OUT1 RF1 RG 1 IN 1 1 RT 1 U1-B 5 6 R IN 2 + - ROUT2 OUT2 RF2 RG 2 IN 2 7 RT 2 U1-C 10 9 R IN 3 + - ROUT3 OUT3 RF3 RG 3 IN 3 8 RT 3 U1-D 12 13 R IN 4 14 ROUT4 OUT4 RF4 RG 4 IN 4 + - RT 4 POWER SUPPLY PINS COMMON TO ALL CHANNELS +5V 4 U1-E -5V C4 6.8µF + C1 0.1µF + C3 6.8µF 11 C2 0.1µF BOARD MOUNTING HOLES Figure 2: Inverting Op Amp Configuration (Please Follow Page 5 Modification for Inverting Gain)  2002 National Semiconductor Corporation 2 www.national.com Fig. 3: Component Side View  2002 National Semiconductor Corporation 3 www.national.com Fig. 4: Circuit Side View  2002 National Semiconductor Corporation 4 www.national.com Fig. 5: Details of Modification to Inverting Gain CLC730131 evaluation board is configured for non-inverting gain. However, it is possible to configure the board for inverting gain. To convert to inverting gain, do the following changes: How to convert the board for Inverting Gain: 1. Cut RT1 from ground plane by cutting trace going from RT1 (terminal closest to RG1) to the top ground plane. See drawing above. 2. Cut RIN1 from input signal trace by cutting trace going from RIN1 (terminal closest to RG1) to the input signal trace, see drawing above. 3. Add jumper wire from input signal trace to trace connecting RG1 to RT1, see drawing above. Changes shown for channel 1 only. Repeat these steps on the corresponding components for the other three channels.  2002 National Semiconductor Corporation 5 www.national.com LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTENT APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 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