DS1847B-010+ Maxim Integrated Products, DS1847B-010+ Datasheet - Page 7

• Manufacturer Part Number: DS1847B-010+
• Description: IC RES TEMP-CNTRL 10/10K 16-BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS1847B-010+

• Taps: 256
• Resistance (ohms): 10K
• Number Of Circuits: 2
• Temperature Coefficient: 850 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 95°C
• Mounting Type: Surface Mount
• Package / Case: 16-CSBGA
• Resistance In Ohms: 10K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TEMPERATURE CONVERSION
The direct-to-digital temperature sensor measures temperature through the use of an on-chip temperature
measurement technique with an operating range from -40°C to +95°C. Temperature conversions are
initiated upon power-up, and the most recent result is stored in address locations E2h and E3h, which are
updated every 10ms. Temperature conversion will not occur during an active read or write to memory.
The value of each resistor is determined by the temperature-addressed look-up table that assigns a unique
value to each resistor for every 2°C increment with a 1°C hysteresis at a temperature transition over the
operating temperature range. This can be seen in Figure 2.
TEMPERATURE CONVERSION HYSTERESIS Figure 2
EXAMPLE TEMPERATURE READINGS Table 2
TEMP
+95ºC
+25.0625ºC
-10.125ºC
-40ºC
M6
M5
M4
M3
M2
M1
BINARY DATA
0010 1111 1000 0000
0000 1100 1000 1000
1111 1010 1111 0000
1110 1100 0000 0000
2
4
TEMPERATURE (C)
6
8
10
7 of 17
HEX DATA
2F80h
0C88h
FAF0h
EC00h
12
Increasing temp
Decreasing temp