Key facts
- Brand
- Maxim
- Model
- DS1721
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-06
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Maxim DS1721 2-Wire Digital Thermometer and Thermostat Datasheet
The DS1721 is a precision temperature sensor that provides 12-bit temperature readings over a simple 2-wire serial interface. It measures temperatures from -55°C to +125°C without requiring external components, acting as a true 'temperature-to-digital' converter.
The device features programmable thermostatic settings and allows for multipoint sensing by uniquely addressing up to eight sensors on the bus. Users can configure the conversion resolution between 9, 10, 11, or 12 bits to balance accuracy with speed, reducing maximum conversion time from 750ms to as low as 93.75ms.
Maxim DS1721 specifications
| Accuracy | +1°C |
|---|---|
| Maximum Conversion Time (9-bit) | 93.75 ms |
| Power Supply Range | 2.7V to 5.5V |
Source: Maxim DS1721 2-Wire Digital Thermometer and Thermostat Datasheet
All Maxim DS1721 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the default temperature resolution of the DS1721?
The default state for the device is configured to perform 12-bit conversions.
From: Maxim DS1721 2-Wire Digital Thermometer and Thermostat Datasheet
How many sensors can be connected on a single bus?
Up to eight sensors can be connected because the device has three address bits.
From: Maxim DS1721 2-Wire Digital Thermometer and Thermostat Datasheet
What temperature range does the DS1721 support?
It measures temperatures from –55 °C to +125 °C.
From: Maxim DS1721 2-Wire Digital Thermometer Thermostat Datasheet
How many address bits are available for multi‑drop operation?
The DS1721 uses 3‑bit addressability, allowing up to eight sensors on the same 2‑wire bus.
From: Maxim DS1721 2-Wire Digital Thermometer Thermostat Datasheet