Key facts
- Brand
- Linear Technology
- Model
- AN11
- Category
- Other Electronics
- Documents
- 6
- Languages
- EN
- Last added
- 2012-06-05
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Linear Technology AN11 Designing Linear Circuits for 5V Single Supply Operation Application Note
The document addresses the challenges of powering analog components directly from a 5V digital rail, which is often noisy due to logic clocking. It explains that while high-performance applications usually require dedicated supplies, many standard analog functions can be successfully implemented with good design practices using the logic supply.
The note presents several specific circuit examples designed for 5V single-supply operation. These include a linearized signal conditioner for platinum RTDs, a methane detector transducer circuit, a cold junction compensated thermocouple conditioner, and two types of precision instrumentation amplifiers (one standard and one ultra-precision chopper-stabilized).
Linear Technology AN11 specifications
| Minimum Input Voltage (JFET) | 300mV to 1.6V |
|---|---|
| Maximum Output Current (JFET) | 2mA |
| Minimum Input Voltage (Bipolar) | 300mV (running) / 550mV (start) |
| Maximum Output Current (Bipolar) | 6mA |
| Output Voltage Range (APD Bias) | 200V from 5V |
Source: Linear Technology AN113 Application Note: Tales From the Laboratory Notebook
All Linear Technology AN11 documents by type
How to use the product for one specific task, with worked examples.
- Linear Technology AN11 Designing Linear Circuits for 5V Single Supply Operation Application Note 16 p
- Linear Technology AN112 Application Note Battery Stack Voltage Measurement 24 p
- Linear Technology AN113 Application Note: Tales From the Laboratory Notebook 20 p
- Linear Technology AN118 High Voltage Low Noise DC/DC Converters Application Note 48 p
- LINEAR AN119B-1 handbook 4 p
- Linear Technology AN119A LTM4601 DC/DC uModule Regulator Application Note 4 p
Questions answered in these manuals
Can analog circuits be powered directly from a 5V logic rail?
Yes, many analog applications can be successfully implemented using the logic supply if combined with good design practices.
From: Linear Technology AN11 Designing Linear Circuits for 5V Single Supply Operation Application Note
What is the accuracy of the linearized RTD signal conditioner?
The circuit compensates sensor nonlinearity to within +0.05°C over its operating range.
From: Linear Technology AN11 Designing Linear Circuits for 5V Single Supply Operation Application Note
What is the circuit accuracy at 25°C over a 0V to 2V battery range?
The circuit achieves an accuracy of 0.05% with a drift of 120ppm/°C.
From: Linear Technology AN112 Application Note Battery Stack Voltage Measurement
What is the absolute maximum cell voltage that can be measured using the processor-driven circuit?
The absolute maximum cell voltage that can be measured is 3.396V.
From: Linear Technology AN112 Application Note Battery Stack Voltage Measurement
What is the minimum input voltage for the JFET-based converter?
The circuit can run from inputs as low as 300mV up to 1.6V.
From: Linear Technology AN113 Application Note: Tales From the Laboratory Notebook
What is the maximum output current for the JFET-based converter?
The 5V output can supply up to 2mA.
From: Linear Technology AN113 Application Note: Tales From the Laboratory Notebook