DS18B20 Maxim Integrated Products, DS18B20 Datasheet - Page 20

• Manufacturer Part Number: DS18B20
• Description: IC THERM MICROLAN PROG-RES TO-92
• Manufacturer: Maxim Integrated Products

Specifications of DS18B20

• Function: Thermometer, Thermostat
• Topology: Register Bank, Scratchpad
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: 1-Wire®
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-92-3 (Standard Body), TO-226
• Full Temp Accuracy: +/- 2 C
• Digital Output - Bus Interface: Serial (1-Wire)
• Digital Output - Number Of Bits: 12 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AC ELECTRICAL CHARACTERISTICS—NV MEMORY
AC ELECTRICAL CHARACTERISTICS
NOTES:
1) See the timing diagrams in Figure 18.
2) Under parasite power, if t
Figure 17. Typical Performance Curve
NV Write Cycle Time
EEPROM Writes
EEPROM Data Retention
Temperature Conversion
Time
Time to Strong Pullup On
Time Slot
Recovery Time
Write 0 Low Time
Write 1 Low Time
Read Data Valid
Reset Time High
Reset Time Low
Presence-Detect High
Presence-Detect Low
Capacitance
PARAMETER
PARAMETER
-0.1
-0.2
-0.3
-0.4
-0.5
0.5
0.4
0.3
0.2
0.1
0
0
RSTL
SYMBOL
SYMBOL
C
t
t
Mean Error
N
t
PDHIGH
t
t
PDLOW
t
t
t
t
t
t
CONV
t
IN/OUT
LOW0
LOW1
SPON
RSTH
SLOT
RSTL
> 960µs, a power-on reset may occur.
RDV
EEDR
t
REC
EEWR
WR
10
9-bit resolution
10-bit resolution
11-bit resolution
12-bit resolution
Start Convert T
Command Issued
CONDITIONS
-55°C to +55°C
-55°C to +55°C
DS18B20 Typical Error Curve
20
CONDITIONS
20 of 22
Temperature (°C)
30
(-55°C to +125°C; V
(-55°C to +100°C; V
40
+3s Error
MIN TYP MAX UNITS
480
480
60
60
15
60
1
1
MIN
50k
10
50
TYP
-3s Error
60
2
93.75
187.5
375
750
120
120
240
10
15
15
60
25
DD
DD
MAX
= 3.0V to 5.5V)
70
= 3.0V to 5.5V)
10
ms
pF
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
UNITS
NOTES
writes
years
DS18B20
ms
1,2
1
1
1
1
1
1
1
1
1