National Semiconductor ADC122S101 2-Channel, 1 MSPS 12-Bit AD Converter Data Manual
Summary
This low-power, two-channel 12-bit Analog-to-Digital Converter is designed for high-performance data acquisition in instrumentation and industrial control systems. Offering variable power management up to 1 MSPS, the ADC operates reliably with a single supply (2.7V–5.25V). The accompanying technical specifications provide comprehensive details on electrical characteristics, performance metrics (SNR, INL), operating conditions, and interfacing for engineers developing remote data logging or portable electronic systems.
Manual Details
| Brand | National |
|---|---|
| Pages | 19 |
| File Size | 927.86 KB |
| Published | June 15, 2026 |
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Frequently Asked Questions
What is the recommended power supply range for operation?
The device operates using a single supply that can range from +2.7V to +5.25V.
How is the ADC powered down to save energy in portable systems?
The power-down feature reduces power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply.
What are the typical performance specifications (e.g., DNL and SNR)?
Typical specifications include DNL of up to +0.9 / −0.6 LSB and an SNR of 72.4 dB.
Does the device work with a wide range of temperatures?
Operation is guaranteed over the industrial temperature range of −40˚C to +85˚C.