DS56 Datasheet, PDF (5/6 Pages) Dallas Semiconductor – Dual Temperature Comparator

DC ELECTRICAL CHARACTERISTICS:
Bandgap Voltage Reference V_REF
PARAMETER SYMBOL CONDITION
V_REF Output
Power Supply
Regulation
V_REF
? V_REF/
? V_DD
2.7V≤V_DD≤3.3V
30V≤V_DD≤5.5V
Load Regulation
? V_REF/
? I_L
+3.0µA≤I_L≤
+50µA
DS56
(-40°C to +125°C; 2.7V ≤V_DD ≤5.5V)
MIN TYP MAX UNITS NOTES
1.238 1.25 1.263
V
±1.45 mV
±0.2 mV/V
0.15 mV/µA
DC ELECTRICAL CHARACTERISTICS:
Trip Point Inputs V_T1/V_T2
PARAMETER SYMBOL CONDITION
Input Bias Current
I_BIAS
Input Range
V_TIN
(-40°C to +125°C; 2.7V ≤V_DD ≤5.5V)
MIN TYP MAX UNITS NOTES
300
nA
0
(V_DD
-1.0)
V
DC ELECTRICAL CHARACTERISTICS:
Thermostat Outputs T_OUT1/T_OUT2
PARAMETER SYMBOL CONDITION
Logic 1 Output
Leakage Current
I_OUT1
V_DD = 5.0V
LOGICAL 0
Output Voltage
V_OUT0
I_OUT = +50 µA
(-40°C to +125°C; 2.7V ≤V_DD ≤5.5V)
MIN TYP MAX UNITS NOTES
1.0
µA
0.4
V
NOTES:
1. All voltages are referenced to ground, unless otherwise specified.
2. Solder according to IPC standards.
3. Specified for V_TEMP sourcing 1.0 µA (max) and V_REF load current = 50 µA.
4. Includes error associated with internal temperature sensor, bandgap voltage V_REF, and comparator
offset. External resistance tolerance and temperature coefficient not included in this spec.
5. Thermometer error (expressed in °C) is the difference between [V_O(T) - 395]/6.20 and the DS56 case
temperature at V_DD = 3.0V, thus taking into account sensor error, DC offset error, sensor amplifier
gain variations, and amplifier nonlinearity.
TYPICAL DS56 THERMOMETER ERROR Figure 3
TBD
TYPICAL DS56 V_TEMP TRANSFER FUNCTION Figure 4
TBD
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