Description

Electronic Component Model: LR8R is an IC chip used for 8 Bit, R/2R Ladder networks for D/A and A/D converter with bi-polar or CMOS switches in various applications. It provides precise ladder network accuracy with a tolerance of ± 1/2 LSB from 0 °C to + 70 °C. The ladder network resistance has a tolerance of ± 2 % with a temperature coefficient of resistance of ± 100 PPM/°C. It operates within a temperature range of 0 °C to + 70 °C, and has a power dissipation rating of 50 mW for individual resistor and 1.8 watts for the total package rating. The standard resistance values available are 25 kilohms, 50 kilohms, and 100 kilohms.

Specifications and features

• 8 Bit, R/2R Ladder networks
• Used for D/A and A/D converter
• Compatible with bi-polar or CMOS switches
• Ladder Network Accuracy: ± 1/2 LSB
• Ladder Network Resistance Tolerance: ± 2 %
• Temperature Coefficient of Resistance: ± 100 PPM/°C
• Operating Temperature Range: 0 °C to + 70 °C
• Power Dissipation Rating at + 70 °C Ambient:
  • 50 mW for individual resistor
  • 1.8 watts for total package rating
• Standard Resistance Values (R): 25 kilohms, 50 kilohms, 100 kilohms

Application Scenarios

The LR8R IC chip can be used in a variety of applications including D/A and A/D converters with bi-polar or CMOS switches. It is commonly used in electronic devices that require precise ladder networks and accurate resistance values.

Comparison

• Precise ladder network accuracy
• Wide operating temperature range
• Multiple resistance values available

• Limited power dissipation rating