DS1624 Digital Thermometer/Memory Datasheet

DS1624 Datasheet, PDF, Equivalent


Part Number

DS1624

Description

Digital Thermometer/Memory

Manufacture

Maxim Integrated

Total Page 14 Pages
Datasheet
Download DS1624 Datasheet


DS1624
DS1624
Digital Thermometer and Memory
General Description
The DS1624 consists of two separate functional units: a
256-byte nonvolatile E2 memory and a direct-to-digital
temperature sensor.
The nonvolatile memory is made up of 256 bytes of E2
memory. This memory can be used to store any type of
information the user wishes. These memory locations are
accessed through the 2-wire serial bus.
The direct-to-digital temperature sensor allows the
DS1624 to measure the ambient temperature and report
the temperature in a 12-bit word with 0.0625°C resolu-
tion. The temperature sensor and its related registers are
accessed through the 2-wire serial interface. Figure 1
shows a block diagram of the DS1624.
Benefits and Features
● Reduces Component Count with Integrated
Temperature Sensor and Nonvolatile E2 Memory
• Measures Temperatures from -55°C to +125°C in
0.0625°C Increments
• ±0.5°C Accuracy from 0°C to 70°C
• 256 Bytes of E2 Memory for Storing Information
Such as Frequency Compensation Coefficients
• No External Components
● Easy-to-Use 2-Wire Serial Interface
• Temperature is Read as a 12-Bit Value
(2-Byte Transfer)
● Available in 8-Pin SO and DIP Packages
Figure 1. Block Diagram
Ordering Information appears at end of data sheet.
VDD
SCL
SDA
A0 ADDRESS AND
A1 I/O CONTROL
A2
GND
STATUS REGISTER AND
CONTROL LOGIC
TEMPERATURE
SENSOR
EEPROM MEMORY
(256 BYTES)
DS1624
19-6288; Rev 5; 8/15

DS1624
DS1624
Digital Thermometer and Memory
Absolute Maximum Ratings
Voltage Range on Any Pin Relative to Ground.....-0.5V to +6.0V
Continuous Power Dissipation (TA = +70°C)
PDIP (derate 9.10mW/°C above +70°C).................727.30mW
Operating Temperature Range.......................... -55°C to +125°C
Storage Temperature Range............................. -55°C to +125°C
Soldering Temperature (reflow)........................................+260°C
Lead Temperature (soldering, 10s).................................. +300°C
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods of time may affect device reliability.
Package Thermal Characteristics (Note 1)
PDIP
Junction-to-Ambient Thermal Resistance (θJA).........110°C/W
Junction-to-Case Thermal Resistance (θJC)................40°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Recommended Operating Conditions
PARAMETER
Supply Voltage
SYMBOL
VDD
(Note 2)
CONDITIONS
MIN TYP MAX UNITS
2.7 5.0 5.5
V
DC Electrical Characteristics
(VDD = 2.7V to 5.5V, TA = -55°C to +125°C, unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
Thermometer Error
TERR
0°C to +70°C
-55°C to +125°C
Thermometer Resolution
12-bit
Low-Level Input Voltage
High-Level Input Voltage
Pulse Width of Spikes That Must
Be Suppressed by the Input Filter
VIL
VIH
tSP Fast mode
Low-Level Output Voltage (SDA)
Input Current Each I/O Pin
I/O Capacitance
VOL1
VOL2
CI/O
3mA sink current (Note 2)
6mA sink current (Note 2)
0.4 < VI/O < 0.9VDD (Note 4)
Temperature conversion
Active Supply Current
ICC E2 write (Notes 5, 6)
Communication only
Standby Supply Current
ISTBY
(Notes 5, 6, 7)
MIN TYP MAX
±0.5
±2.0
0.0625
-0.3
0.7 x VDD
0.3 x VDD
VDD + 0.3
UNITS
°C
°C
V
V
0 50 ns
0 0.4
V
0 0.6
-1 +1 µA
10 pF
1250
400 µA
125
1 3 µA
www.maximintegrated.com
Maxim Integrated 2


Features DS1624 Digital Thermometer and Memory General Description The DS1624 consists of two separate functional units: a 25 6-byte nonvolatile E2 memory and a dire ct-to-digital temperature sensor. The n onvolatile memory is made up of 256 byt es of E2 memory. This memory can be use d to store any type of information the user wishes. These memory locations are accessed through the 2-wire serial bus . The direct-to-digital temperature sen sor allows the DS1624 to measure the am bient temperature and report the temper ature in a 12-bit word with 0.0625°C r esolution. The temperature sensor and i ts related registers are accessed throu gh the 2-wire serial interface. Figure 1 shows a block diagram of the DS1624. Benefits and Features ●● Reduces C omponent Count with Integrated Temperat ure Sensor and Nonvolatile E2 Memory Measures Temperatures from -55°C to +125°C in 0.0625°C Increments • 0.5°C Accuracy from 0°C to 70°C • 256 Bytes of E2 Memory for Storing Information Such as Frequency Compensation C.
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