Electrical Engineering Dictionary
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Resistor Networks
Individual Resistors [Resistor Array]
Although a 20-pin Leadless Chip Carrier [LLCC] is shown below, other component packages exist, as found in the links below. This package style is used for both resistor networks and resistor arrays. Examples below show no common connection point for the individual resistors [resistor arrays], and resistors that are inter-connected within the package [resistor networks].
Individual Connection Resistor Network
Individual Resistors, common connection
The resistor array shown below shows a 20-pin LLCC arrangement. The nineteen individual resistors each have a node that only connectors to one pin of the device, with no resistors connected to any other resistor in the package.
Common usage; tie pin 20 to Vcc, and use each resistor as a pull-up. Tie pin 20 to ground and use each resistor as a termination.
Common Resistor Network
Common Connection Networks are used when many of the same value resistor connect to the same point, normally a voltage node [Vcc or Ground]. These resistors within the package will normally always be the same value.
Resistor Network, parallel connection [Thevenin]
Common usage; bus termination. Normally pin 20 will connect to Vcc and pin 1 will connect to ground.
Parallel Resistor Termination
The Parallel Connection Network will be one of the few network packages that will contain two different value resistors. As shown in the package graphic above; Resistor R1 will be one value while Resistor R2 will be some different value. There are many different value combinations that relate to standard bus termination schemes.
Refer to the table to the right to see standard values for both R1 and R2. There are other possible common values not shown. Also refer to the definition of Termination Resistor, which is part of the section of Resistor Terms.
20-pin Leadless Chip Carrier
Related Components;
16-pin LLCC Network Schematics, Leadless Chip Carrier.
6-pin LLCC Network Schematics, Dual Leadless Chip Carrier.
16-pin LLCC Network Schematics, Dual Leadless Chip Carrier.
16-pin DIP Network Schematics, Dual In-line Package.
