Datasheet TMP05, TMP06 (Analog Devices)

±0.5°C Accurate PWM Temperature Sensor in 5-Lead SC-70 Data Sheet TMP05/ TMP06 FEATURES FUNCTIONAL BLOCK DIAGRAM Modulated serial digital output, proportional to VDD temperature 5 ±0.5°C typical accuracy at 25°C TMP05/TMP06 ±1.0°C accuracy from 0°C to 70°C TEMPERATURE SENSOR Two grades available Σ-∆ AVERAGING CORE BLOCK/ 1 OUT Operation from −40°C to +150°C COUNTER REFERENCE Operation from 3 V to 5.5 V Power consumption 70 μW maximum at 3.3 V OUTPUT CMOS-/TTL-compatible output on TMP05 CONTROL CLK AND Flexible open-drain output on TMP06 CONV/IN TIMING 2 GENERATION Small, low cost, 5-lead SC-70 and SOT-23 packages 3 FUNC
1
APPLICATIONS 4
00
GND
40- 033
Isolated sensors
Figure 1.
Environmental control systems Computer thermal monitoring Thermal protection Industrial process control Power-system monitors GENERAL DESCRIPTION
The CONV/IN input pin is used to determine the rate at which The TMP05/TMP06 are monolithic temperature sensors that the TMP05/TMP06 measure temperature in continuously generate a modulated serial digital output (PWM), which varies converting mode and one shot mode. In daisy-chain mode, the in direct proportion to the temperature of the devices. The high CONV/IN pin operates as the input to the daisy chain. period (TH) of the PWM remains static over all temperatures,
PRODUCT HIGHLIGHTS
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 1. The TMP05/TMP06 have an on-chip temperature sensor excellent transducer linearity. The digital output of the TMP05/ that allows an accurate measurement of the ambient TMP06 is CMOS-/TTL-compatible and is easily interfaced to temperature. The measurable temperature range is the serial inputs of most popular microprocessors. The flexible –40°C to +150°C. open-drain output of the TMP06 is capable of sinking 5 mA. 2. Supply voltage is 3 V to 5.5 V. The TMP05/TMP06 are specified for operation at supply voltages 3. Space-saving 5-lead SOT-23 and SC-70 packages. 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 4. Temperature accuracy is typically ±0.5°C. Each part needs to +150°C temperature range. It is not recommended to operate a decoupling capacitor to achieve this accuracy. 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 5. Temperature resolution of 0.025°C. packaged in low cost, low area SC-70 and SOT-23 packages. 6. The TMP05/TMP06 feature a one shot mode that reduces The TMP05/TMP06 have three modes of operation: continu- the average power consumption to 102 μW at 1 SPS. ously converting mode, daisy-chain mode, and one shot mode. A three-state FUNC input determines the mode in which the TMP05/TMP06 operate.
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Document Outline Features Applications Functional Block Diagram General Description Product Highlights Revision History Specifications TMP05A/TMP06A Specifications TMP05B/TMP06B Specifications Timing Characteristics Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Circuit Information Converter Details Functional Description Operating Modes Continuously Converting Mode One Shot Mode Conversion Rate Daisy-Chain Mode TMP05 Output TMP06 Output Application Hints Thermal Response Time Self-Heating Effects Supply Decoupling Layout Considerations Temperature Monitoring Daisy-Chain Application TMP05 Program Code Example 1 Continuously Converting Application TMP05 Program Code Example 2 Outline Dimensions Ordering Guide