Datasheet

LTC2996
3
2996f
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
CC
= 3.3V, unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
Note 3: If voltage on pin D
+
exceeds the diode select threshold the
LTC2996 uses the internal diode sensor.
Note 4: Remote diode temperature, not LTC2996 temperature.
Note 5: Guaranteed by design and test correlation.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
T
CONV
Temperature Update Interval 3.5 5 ms
K
T
V
PTAT
Slope
Ideality Factor η = 1.004
4 mV/K
V
PTAT
Load Regulation I
LOAD
= ±200μA ±1.5 mV
T
INT
Internal Temperature Accuracy
LTC2996C, LTC2996I
LTC2996H
l
l
±0.5
±0.5
±0.5
±1
±2
±3
°C
°C
°C
T
RMT
Remote Temperature Error, η = 1.004
0°C to 85°C (Notes 4, 5)
–40°C to 0°C (Notes 4, 5)
85°C to 125°C (Notes 4, 5)
±0.25
±0.25
±0.25
±1
±1.5
±1.5
°C
°C
°C
Temperature Noise 0.15
0.01
°C
RMS
°C
RMS
/√Hz
T
VCC
Temperature Error vs Supply
l
±0.5 °C/V
T
RS
Series Resistance Cancellation Error R
SERIES
= 100Ω
l
±0.25 ±1 °C
Temperature Monitoring
T
OFF
VTH, VTL Offset
l
–3 –1 1 °C
∆T
HYST
OT, UT Temperature Hysteresis
l
2 5 10 °C
I
IN
VTH, VTL, Input Current
l
±20 nA
Digital Outputs
V
OH
High Level Output Voltage, OT, UT I = –0.5μA
l
V
CC
– 1.2 V
V
OL
Low Level Output Voltage, OT, UT I = 3mA
l
0.4 V