Datasheet

UCD3138
SLUSAP2F –MARCH 2012 –REVISED NOVEMBER 2013 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
V33A = V33D = V33DIO = 3.3V; 1μF from BP18 to DGND, T
J
= –40°C to 125°C (unless otherwise noted)
PARAMETER TEST CONDITION MIN TYP MAX UNIT
Internal signal warning of brownout
Brownout 2.9 V
conditions
TEMPERATURE SENSOR
(7)
V
TEMP
Voltage range of sensor 1.46 2.44 V
Voltage resolution Volts/°C 5.9 mV/ºC
Temperature resolution Degree C per bit 0.1034 ºC/LSB
Accuracy
(7)(8)
-40°C to 125°C –10 ±5 10 ºC
Temperature range -40°C to 125°C –40 125 ºC
I
TEMP
Current draw of sensor when active 30 μA
T
ON
Turn on time / settling time of sensor 100 μs
V
AMB
Ambient temperature Trimmed 25°C reading 1.85 V
ANALOG COMPARATOR
DAC Reference DAC Range 0 2.5 V
Reference Voltage 2.478 2.5 2.513 V
Bits 7 bits
INL
(7)
–0.42 0.21 LSB
DNL
(7)
0.06 0.12 LSB
Offset –5.5 19.5 mV
Time to disable DPWM output based on 0
V to 2.5 V step input on the analog 150 ns
comparator.
(9)
Reference DAC buffered output load
(10)
0.5 1 mA
Buffer offset (-0.5 mA) 4.6 8.3 mV
Buffer offset (1.0 mA) –0.05 17 mV
(7) Characterized by design and not production tested.
(8) Ambient temperature offset value should be used from the TEMPSENCTRL register to meet accuracy.
(9) As designed and characterized. Not 100% tested in production.
(10) Available from reference DACs for comparators D, E, F and G.
18 Electrical Specifications Copyright © 2012–2013, Texas Instruments Incorporated
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