DS1626U+ Maxim Integrated Products, DS1626U+ Datasheet - Page 2

• Manufacturer Part Number: DS1626U+
• Description: IC THERMOMETER/STAT DIG 8-USOP
• Manufacturer: Maxim Integrated Products

Specifications of DS1626U+

• Function: Thermometer, Thermostat
• Topology: ADC (Sigma Delta), Comparator, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: 3-Wire Serial
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Full Temp Accuracy: +/- 2 C
• Digital Output - Bus Interface: Serial (3-Wire)
• Digital Output - Number Of Bits: 12 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 2°C
• Supply Current: 1.25mA
• Supply Voltage Range: 2.7V To 5.5V
• Resolution (bits): 12bit
• Sensor Case Style: µSOP
• No. Of Pins: 8
• Accuracy %: 0.5°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN DESCRIPTION
Table 1. DS1626/DS1726 REGISTER SUMMARY
Figure 1. DS1626/DS1726 FUNCTIONAL DIAGRAM
PIN
CLK/CNV
Read/Write and Read
REGISTER NAME
Only—See Table 3)
1
2
3
4
5
6
7
8
(USER ACCESS)
(Various Bits are
RST
GND
SDA
Configuration
(Read/Write)
(Read/Write)
Temperature
(Read Only)
V
DD
CLK/CNV
NAME
T
GND
T
T
T
T
RST
V
DQ
HIGH
COM
LOW
H
L
DD
I/O CONTROL
Data Input/Output Pin (Tri-State) for 3-Wire Serial Communication
Clock Input Pin for 3-Wire Serial Communication. Controls temperature
measurements when the DS1626/DS1726 is configured as a stand-alone thermostat.
Reset Input Pin for 3-Wire Serial Communication
Ground Pin
Thermostat Output Pin (Push-Pull) with Programmable Hysteresis
Thermostat Output Pin (Push-Pull) with T
Thermostat Output Pin (Push-Pull) with T
Supply Voltage. +2.7V to +5.5V input power pin.
ADDRESS
and
12 Bits
12 Bits
12 Bits
1 Byte
SIZE
MEMORY
SRAM and
EEPROM
EEPROM
EEPROM
SRAM
TYPE
CONFIGURATION REGISTER AND CONTROL LOGIC
TEMPERATURE REGISTER
TEMPERATURE SENSOR AND ΔΣ ADC
T
T
H
L
REGISTER
REGISTER
2 of 12
Measured Temperature (Two’s Complement)
Power-Up/POR State: -60ºC (1100 0100 0000)
Upper Alarm Trip Point (Two’s Complement)
Power-Up/POR State: User Defined
Initial State from Factory: +15°C (0000 1111 0000)
Lower Alarm Trip Point (Two’s Complement)
Power-Up/POR State: User Defined
Initial State from Factory: +10°C (0000 1010 0000)
Configuration and Status Information (Unsigned)
4MSbs = SRAM and 4LSbs = EEPROM
Power-Up/POR State: 1000XXXX (XXXX = User
Defined)
FUNCTION
AND POWER-UP/POR STATE
L
H
Trip Point
Trip Point
REGISTER CONTENTS
COMPARATOR/LOGIC
DIGITAL
DS1626/DS1726
T
T
T
COM
HIGH
LOW