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DS620
Low-Voltage, ±0.5°C Accuracy Digital Thermometer and Thermostat
First Digital, Temperature Sensor to Operate Down to 1.7V
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Status
Active: In Production.
Description
The DS620 digital thermometer and thermostat
provides low-voltage (1.7V < VDD < 3.5V) temperature measurements with ±0.5°C accuracy from 0°C to
+70°C and an operating temperature range of -55°C
to +125°C. The DS620 communicates over a 2-wire
digital interface. For distributed-sensing applications,
it is multidroppable with three address pins that allow
up to eight DS620s to operate on a single bus.
The DS620 has thermostat functionality with userdefined
thresholds stored in EEPROM registers, and
it can be configured for standalone thermostat
operation. The programmable output (PO) pin serves
as the thermostat output, and this pin can also be
configured to function as an active-low control for
peripheral devices.
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Data Sheet
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Key Features
- Low-Voltage Operation: 1.7V to 3.5V
- ±0.5°C Accuracy from 0°C to +70°C
- Operating Temperature Range: -55°C to +125°C (-67°F to +257°F)
- Temperature Measurements Require No External Components
- Resolution is User-Selectable to 10-, 11-, 12-, or 13-Bits (0.5°C, 0.25°C, 0.125°C, and 0.0625°C LSb Weight, Respectively)
- Multidroppable
- Fast (200ms max) Temperature-to-Digital Conversion Time
- Thermostatic Settings are User-Definable and Nonvolatile
- Standalone Thermostat Capability
- Data is Read/Written Through a 2-Wire Serial Interface
- Package: 8-Pin µSOP
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Applications/Uses
- Computers/Servers
- Industrial
- Low-Voltage Temperature-Sensitive Applications
- Medical Instruments
- Portable Applications
- Test Equipment
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Key Specifications:
| Temperature Sensors |
| Part Number |
Sensor Type |
Functions |
Interface |
Accuracy
(±°C) |
Parasite Pwr. |
Temp. Thresh. |
Temp. Resolution
(bits) |
Oper. Temp.
(°C) |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| max w/pins |
See Notes |
| DS620 |
Local |
Standalone Thermostat |
2-Wire/I2C/SMBus |
0.5 |
No |
Programmable (NV) |
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-55 to +125 |
15.3 |
$1.80 @1k |
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See All Temperature Sensors (103)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
More Information
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Information Index
Rev 0;
2004-08-16
This page last modified: 2009-10-07
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