This document introduces Circuit Note CN-0183 Circuits from the Lab™ reference circuits, which are engineered and tested for quick and easy system integration to help solve today’s analog, mixed-signal, and RF design challenges. The document references several devices, including AD5668 16-Bit Voltage Output denseDAC and AD8638 16 V Auto-Zero, Rail-to-Rail Output Op Amp.
The document presents Circuit Note CN-0183, a reference design engineered for quick system integration to solve analog, mixed-signal, and RF design challenges. The circuit provides a precision 16-bit, low drift bipolar voltage output of ±2.5 V operating on a single +10 V to +15 V supply. It utilizes the AD5668 octal denseDAC, the AD8638 auto-zero op amp, and the ADP2300 switching regulator to achieve this performance.
| Output Voltage Range | ±2.5 V |
|---|---|
| Supply Voltage Range | +10 V to +15 V |
| DAC Resolution | 16-bit |
| Op Amp Drift | 0.06 ppm/°C |
| Reference Drift | 5 ppm/°C |
The circuit provides a bipolar output voltage that swings from −2.5 V to +2.5 V.
The circuit operates on a single supply voltage of nominally 12 V, which can vary between 10 V and 15 V.