CIRCUIT060058
Single-supply, low-input voltage full-wave rectifier circuit
CIRCUIT060058
Overview
This single-supply precision absolute value circuit is optimized for low-input voltages. It is designed to function up to 50 kHz and has excellent linearity at signal levels as low as 5 mVpp. The design uses a negative charge pump (such as LM7705) on the negative op amp supply rails to maintain linearity with signal levels near 0 V.
Features
- Input: Vi = 5 mV to 400 mV
- Output: Vo = 2.5 mV to 200 mV
- Supply:
- Vcc = 5 V
- Vee = -0.23 V
- Vref = 0 V
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- Read the circuit design
- Download the model
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| Circuit design | Single-Supply, Low-Input Voltage, Full-Wave Rectifier Circuit (Rev. B) | PDF | HTML | Oct 16, 2024 | |
| User guide | Precision Full-Wave Rectifier, Dual Supply Design Guide | Jan 8, 2014 | ||
| Application note | Single-Supply Op Amp Design Techniques (Rev. A) | Mar 14, 2001 |