SBOS522A June 2010 – November 2019 OPA333-Q1
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Applications
- 8.2.1 High-Side Voltage-to-Current (V-I) Converter
- 8.2.2 Precision, Low-Level Voltage-to-Current (V-I) Converter
- 8.2.3 Composite Amplifier
- 8.2.4 Temperature Measurement
- 8.2.5 Single Op-Amp Bridge-Amplifier
- 8.2.6 Low-Side Current-Monitor
- 8.2.7 High-Side Current Monitor
- 8.2.8 Thermistor Measurement
- 8.2.9 Precision Instrumentation Amplifier
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
7.3.1 Rail-to-Rail Input Voltage
The OPA333-Q1 input common-mode voltage range extends 0.1 V beyond the supply rails. The OPA333-Q1 device is designed to cover the full range without the troublesome transition region found in some other rail-to-rail amplifiers.
Normally, input bias current is approximately 70 pA; however, input voltages exceeding the power supplies can cause excessive current to flow into or out of the input pins. Momentary voltages greater than the power supply can be tolerated if the input current is limited to 10 mA. This limitation is easily accomplished with an input resistor (see Figure 18).
1. Current-limiting resistor required if input voltage exceeds supply rails by ≥0.5 V.
Figure 18. Input Current Protection