DS1620S+ Dallas Semiconductor, DS1620S+ Datasheet

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DS1620S+

Manufacturer Part Number
DS1620S+
Description
Thermometer; Digital, -55 to 125 C Range, 9-Bit Resolution, 3-Wire I'face, SOIC8
Manufacturer
Dallas Semiconductor
Datasheet

Specifications of DS1620S+

Body Style
SOIC
Brand/series
DS1620
Function
Thermostat
Mounting Type
PCB
Output
Voltage
Primary Type
Thermostat
Range, Measurement
125 °C
Termination
Leaded
Voltage, Supply
5.5 V
Voltage, Switching
2.4 V
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
FEATURES
§ Requires no external components
§ Supply voltage range covers from 2.7V to
§ Measures temperatures from -55°C to +125°C
§ Temperature is read as a 9-bit value
§ Converts temperature to digital word in 750
§ Thermostatic settings are user-definable and
§ Data is read from/written via a 3-wire serial
§ Applications include thermostatic controls,
§ 8-pin DIP or SOIC (208-mil) packages
DESCRIPTION
The DS1620 Digital Thermometer and Thermostat provides 9–bit temperature readings which indicate
the temperature of the device. With three thermal alarm outputs, the DS1620 can also act as a thermostat.
T
TH. T
TL. T
below that of TL.
HIGH
5.5V
in 0.5°C increments; Fahrenheit equivalent is
-67°F to +257°F in 0.9°F increments
ms (max)
nonvolatile
interface (CLK, DQ,
industrial systems, consumer products,
thermometers, or any thermally sensitive
system
is driven high if the DS1620’s temperature is greater than or equal to a user–defined temperature
COM
LOW
is driven high if the DS1620’s temperature is less than or equal to a user–defined temperature
is driven high when the temperature exceeds TH and stays high until the temperature falls
RST
)
1 of 12
CLK/CONV
CLK/CONV
PIN ASSIGNMENT
PIN DESCRIPTION
DQ
CLK/
GND
T
T
T
V
RST
HIGH
LOW
COM
DD
GND
GND
RST
CONV
RST
DQ
DQ
DS1620S 8-Pin SOIC (208-mil)
DS1620 8-Pin DIP (300-mil)
Digital Thermometer and
- 3-Wire Input/Output
- 3-Wire Clock Input and
- 3-Wire Reset Input
- Ground
- High Temperature Trigger
- Low Temperature Trigger
- High/Low Combination Trigger
- Power Supply Voltage (3V - 5V)
1
2
3
4
1
2
3
4
Stand-alone Convert Input
8
7
6
5
8
7
6
5
V
T
T
T
V
T
T
T
Thermostat
HIGH
DD
LOW
COM
HIGH
DD
LOW
COM
DS1620

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DS1620S+ Summary of contents

Page 1

FEATURES § Requires no external components § Supply voltage range covers from 2.7V to 5.5V § Measures temperatures from -55°C to +125°C in 0.5°C increments; Fahrenheit equivalent is -67°F to +257°F in 0.9°F increments § Temperature is read as a ...

Page 2

... PACKAGE MARKING DS1620 DS1620+ DS1620 (See Note) DS1620S DS1620S+ DS1620 (See Note) DS1620S/T&R DS1620S+T&R DS1620 (See Note) Note: A “+” symbol will also be marked on the package near the Pin 1 indicator DETAILED PIN DESCRIPTION Table 1 PIN SYMBOL 1 DQ Data Input/Output pin for 3-wire communication port. ...

Page 3

WRITE DATA TRANSFER Figure 5 NOTE and t apply to both read and write data transfer ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature ...

Page 4

DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Thermometer Error Thermometer Resolution Logic 0 Output Logic 1 Output Input Resistance Active Supply Current Standby Supply Current Input Current on Each Pin Thermal Drift SINGLE CONVERT TIMING DIAGRAM (STAND-ALONE MODE) CONV AC ELECTRICAL CHARACTERISTICS ...

Page 5

AC ELECTRICAL CHARACTERISTICS PARAMETER Input Capacitance I/O Capacitance EEPROM AC ELECTRICAL CHARACTERISTICS PARAMETER EEPROM Write Cycle Time EEPROM Writes EEPROM Data Retention (-55°C to +125°C; V SYMBOL MIN TYP I/O (-55°C to +125°C; V CONDITIONS ...

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