TMP05_15 Datasheet, PDF (1/28 Pages) Analog Devices – 0.5C Accurate PWM Temperature Sensor in 5-Lead SC-70

Data Sheet
±0.5°C Accurate PWM
Temperature Sensor in 5-Lead SC-70
TMP05/TMP06
FEATURES
Modulated serial digital output, proportional to
temperature
±0.5°C typical accuracy at 25°C
±1.0°C accuracy from 0°C to 70°C
Two grades available
Operation from −40°C to +150°C
Operation from 3 V to 5.5 V
Power consumption 70 μW maximum at 3.3 V
CMOS-/TTL-compatible output on TMP05
Flexible open-drain output on TMP06
Small, low cost, 5-lead SC-70 and SOT-23 packages
APPLICATIONS
Isolated sensors
Environmental control systems
Computer thermal monitoring
Thermal protection
Industrial process control
Power-system monitors
FUNCTIONAL BLOCK DIAGRAM
V_DD
5
TMP05/TMP06
TEMPERATURE
SENSOR
REFERENCE
Σ-∆
CORE
AVERAGING
BLOCK/
COUNTER
1 OUT
CONV/IN 2
CLK AND
TIMING
GENERATION
4
GND
Figure 1.
OUTPUT
CONTROL
3 FUNC
GENERAL DESCRIPTION
The TMP05/TMP06 are monolithic temperature sensors that
generate a modulated serial digital output (PWM), which varies
in direct proportion to the temperature of the devices. The high
period (TH) of the PWM remains static over all temperatures,
while the low period (TL) varies. The B Grade version offers a
high temperature accuracy of ±1°C from 0°C to 70°C with
excellent transducer linearity. The digital output of the TMP05/
TMP06 is CMOS-/TTL-compatible and is easily interfaced to
the serial inputs of most popular microprocessors. The flexible
open-drain output of the TMP06 is capable of sinking 5 mA.
The TMP05/TMP06 are specified for operation at supply voltages
from 3 V to 5.5 V. Operating at 3.3 V, the supply current is typically
370 μA. The TMP05/TMP06 are rated for operation over the –40°C
to +150°C temperature range. It is not recommended to operate
these devices at temperatures above 125°C for more than a total
of 5% (5,000 hours) of the lifetime of the devices. They are
packaged in low cost, low area SC-70 and SOT-23 packages.
The TMP05/TMP06 have three modes of operation: continu-
ously converting mode, daisy-chain mode, and one shot mode.
A three-state FUNC input determines the mode in which the
TMP05/TMP06 operate.
Rev. C
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The CONV/IN input pin is used to determine the rate at which
the TMP05/TMP06 measure temperature in continuously
converting mode and one shot mode. In daisy-chain mode, the
CONV/IN pin operates as the input to the daisy chain.
PRODUCT HIGHLIGHTS
1. The TMP05/TMP06 have an on-chip temperature sensor
that allows an accurate measurement of the ambient
temperature. The measurable temperature range is
–40°C to +150°C.
2. Supply voltage is 3 V to 5.5 V.
3. Space-saving 5-lead SOT-23 and SC-70 packages.
4. Temperature accuracy is typically ±0.5°C. Each part needs
a decoupling capacitor to achieve this accuracy.
5. Temperature resolution of 0.025°C.
6. The TMP05/TMP06 feature a one shot mode that reduces
the average power consumption to 102 μW at 1 SPS.
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