|
Part number: 4
|
Haos Redro
|
Last update: 14/06/2009
|
|
|
|
Four input summing amplifier module
|
|
|
|
|
Resources:
| 7 |
Overall schematic |
FIG | PDF |
| 8 |
PCB layout |
FIG | PDF (copper) | PDF (copper+component) |
|
|
|
|
Description:
A four-input non-inverting summing amplifier module.
Table 1: Component function
| R1-R5,IC1A |
These form an inverting summing amplifier. The output voltage is given by (V1/R1 + V2/R2 + V3/R3 + V4/R4)*R5. It is recommended that for each input the source impedance is 1/10 of the input resistance or less. |
| R6,R7,IC1B |
These form an inverting buffer to provide a noninverted output. |
| C1 |
This provides high frequency noise suppression. |
| C2,C3 |
Supply rail decoupling capacitors. |
|
PCB layout:
The PCB is intended to be integrated into a larger design using right-angled pins so that it stands vertically from the motherboard much like an SIL packaged part. All three connectors are located along the lower edge of board.
Power:
The datasheet of the model of op-amp chosen for IC1 should be consulted for information regarding the power requirements of this module.
Images:
Completed module (two inputs used) |
|
|
|
|
|
Copyright © 2008 Taiyo Rawle. This document is released under the terms of the TAPR Open Hardware License version 1.0 or at your option any later version as published by TAPR: http://www.tapr.org/ohl.html
|
