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Analog Devices Inc. TMP05BRTZ-REEL
- Part No.:
- TMP05BRTZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog and Digital Output
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TMP05BRTZ-REEL.pdf
- Description:
- SENSOR DIGITAL -40C-150C SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,173
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Product details
Overview
TMP05BRTZ-REEL from Analog Devices is a monolithic ±0.5°C accurate PWM temperature sensor in 5-lead SC-70 package, generating a ratiometric pulse-width modulated output where TH remains fixed (34 ms at 25°C) and TL varies linearly with temperature (65 ms at 25°C), enabling direct ambient temperature measurement in isolated thermal monitoring systems.
For engineers reviewing the TMP05BRTZ-REEL datasheet, TMP05BRTZ-REEL pinout, TMP05BRTZ-REEL application, or TMP05BRTZ-REEL equivalent, key selection criteria include its B-grade accuracy (±1°C from 0°C to 70°C), 3 V to 5.5 V supply range, 370 µA typical supply current at 3.3 V, CMOS/TTL push-pull output, and support for continuously converting, one-shot, and daisy-chain operating modes.
Technical Context
The TMP05BRTZ-REEL implements a first-order Σ-Δ modulator with on-chip VPTAT sensor and precision voltage reference, producing a mark-space ratio digital output independent of clock drift. Its ratiometric encoding eliminates timing dependency between sensor and host microcontroller.
Three operating modes-continuously converting (FUNC floating), one-shot (FUNC low), and daisy-chain (FUNC high)-are selected via the FUNC pin at power-up; the CONV/IN pin sets conversion rate in continuous/one-shot modes or serves as daisy-chain input in daisy-chain mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.5°C typical at 25°C; ±1°C from 0°C to 70°C (B grade) |
| Output Type | CMOS/TTL-compatible push-pull PWM; TH = 34 ms fixed, TL varies with temperature |
| Supply Voltage | 3.0 V to 5.5 V; decoupling capacitor (0.1 µF) required for specified accuracy |
| Supply Current | 370 µA typical at 3.3 V (continuous mode); 30.9 µA average in one-shot @ 1 SPS |
| Operating Range | −40°C to +150°C; not recommended >125°C for >5% of lifetime (5,000 hrs) |
| Temperature Resolution | 0.025°C per 5 µs change in TL period |
| Package | 5-lead SC-70 (KS-5); 2.0 mm × 1.25 mm footprint, 0.9 mm height |
Pinout & Package
Package: 5-lead SC-70 (KS-5), surface-mount, moisture-sensitive level 1 (MSL-1), Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Digital PWM output | Push-pull CMOS/TTL square wave; TH fixed, TL proportional to temperature; requires no external pull-up |
| 2 - CONV/IN | Mode-selectable digital input | In continuous/one-shot modes: configures conversion rate; in daisy-chain mode: accepts PWM input from prior device |
| 3 - FUNC | Mode configuration input | Low = one-shot; floating = continuous; high = daisy-chain; sampled at power-up only |
| 4 - GND | Analog/digital ground | Single common reference for sensor core, modulator, and output driver; must be low-impedance |
| 5 - VDD | Positive supply | 3.0 V–5.5 V; 0.1 µF ceramic decoupling capacitor required adjacent to pin for accuracy and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ratiometric PWM encoding | Eliminates clock drift sensitivity: temperature calculation depends only on TH/TL ratio, not absolute timing |
| Three configurable operating modes | One-shot (low-power polling), continuous (real-time monitoring), daisy-chain (multi-sensor single-wire bus) |
| On-chip Σ-Δ modulator | Delivers 12-bit effective resolution without external calibration; uses time-domain oversampling for noise shaping |
| Self-contained thermal sensing | Integrated VPTAT sensor and reference provide ±0.5°C typical accuracy without trimming or compensation circuitry |
| Low quiescent power | 3 µA typical standby current (output high, no conversion); enables battery-operated thermal logging |
Applications
| Isolated Sensors | Computer Thermal Monitoring |
|---|---|
Use Scenario: Temperature sensing across galvanic isolation barriers using optocouplers or digital isolators. IC Role / Device Role / Timing Role: Provides isolated PWM output that avoids analog signal degradation and eliminates need for isolated ADC or precision op-amps. Use Value: Enables accurate remote temperature readout with minimal component count and no calibration, leveraging ratiometric output immunity to supply and clock variation. | Use Scenario: Real-time CPU/GPU die temperature tracking in desktop/laptop motherboards and server DIMMs. IC Role / Device Role / Timing Role: Delivers fast-response ambient temperature data via simple GPIO capture of TH/TL periods for thermal throttling decisions. Use Value: Supports sub-second thermal response (≤20 ms turn-on) and low 370 µA active current, minimizing system power overhead during continuous monitoring. |
| Thermal Protection | Industrial Process Control |
Use Scenario: Overtemperature cutoff in motor drives, power supplies, and battery packs where rapid fault detection is critical. IC Role / Device Role / Timing Role: Acts as autonomous thermal watchdog: one-shot mode triggers periodic checks; fixed TH allows deterministic timing for fail-safe timeout logic. Use Value: Achieves <100 ms worst-case response with 30.9 µA average current in 1 SPS one-shot mode, extending battery life in portable protection circuits. | Use Scenario: Ambient and enclosure temperature feedback in PLCs, HMIs, and industrial controllers operating in harsh environments. IC Role / Device Role / Timing Role: Serves as ruggedized front-end sensor interfaced directly to microcontroller GPIO, supporting −40°C to +150°C operation with minimal external components. Use Value: Maintains ±1°C accuracy over 0°C–70°C industrial ambient range while tolerating wide supply (3–5.5 V) and surviving reflow up to 260°C (Pb-free). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PWM temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6613ASA+ | ±1°C accuracy (0°C–70°C); 5-lead SOT23; open-drain output; 2.7 V–5.5 V supply | Lacks daisy-chain mode; requires external pull-up; higher 1.2 µA quiescent current | Preferred when open-drain flexibility and lower minimum supply (2.7 V) outweigh need for push-pull simplicity and daisy-chain scalability. |
| LM71CIMF/NOPB | 13-bit SPI output; ±0.5°C accuracy; 6-lead SOT23; 2.7 V–5.5 V; 125 µA typical supply current | Digital interface requires dedicated SPI lines; no native PWM or daisy-chain capability | Chosen when higher resolution, faster update rates (>10 SPS), and integration with existing SPI infrastructure justify added routing complexity. |
Compared with MAX6613ASA+ and LM71CIMF/NOPB, the TMP05BRTZ-REEL uniquely combines push-pull PWM output, three-mode configurability (including daisy-chain), and SC-70 footprint in a single B-grade device-offering lowest system-level component count for isolated or multi-node thermal sensing without sacrificing accuracy or supply flexibility.
Availability
TMP05BRTZ-REEL is available at Aetrix Electronics and suitable for computer thermal monitoring, industrial process control, and thermal protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TMP05BRTZ-REEL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets.
The TMP05/TMP06 product line was designed specifically for cost-sensitive, space-constrained thermal monitoring applications demanding high accuracy without calibration-targeting embedded systems where simplicity, reliability, and minimal external components are critical.
FAQ
What is the guaranteed accuracy specification for TMP05BRTZ-REEL over its full operating temperature range?
The TMP05BRTZ-REEL guarantees ±2.5°C accuracy from −40°C to +125°C and ±4.5°C from −40°C to +150°C under specified supply conditions (3.0 V–3.6 V or 4.5 V–5.5 V). Its B-grade specification emphasizes ±1°C accuracy from 0°C to 70°C-the primary range for computing and industrial control applications-making it suitable for systems requiring tight thermal regulation within standard ambient environments. The TMP05BRTZ-REEL achieves this with no user calibration needed.
How does the TMP05BRTZ-REEL's PWM output differ from standard digital temperature sensors with I²C or SPI interfaces?
The TMP05BRTZ-REEL outputs a ratiometric PWM signal (fixed TH, variable TL) instead of packetized serial data. This eliminates protocol overhead, clock synchronization, and address management-reducing firmware complexity and enabling use with any microcontroller GPIO timer/counter. Unlike I²C/SPI sensors, the TMP05BRTZ-REEL requires only one signal line plus power/ground, supports daisy-chaining multiple units on a single wire, and delivers inherent immunity to clock drift since temperature is derived from TH/TL ratio, not absolute timing.
Can TMP05BRTZ-REEL operate reliably at 150°C, and what are the lifetime limitations?
The TMP05BRTZ-REEL is rated for operation from −40°C to +150°C, but Analog Devices specifies that exposure above +125°C should not exceed 5% of total device lifetime (≈5,000 hours) to maintain reliability. At 150°C, accuracy degrades to ±4.5°C, and long-term drift increases. For continuous high-temperature applications, derating or periodic recalibration is advised. The TMP05BRTZ-REEL's SC-70 package has a junction-to-ambient thermal resistance of 534.7°C/W, requiring careful PCB layout for sustained high-temp operation.
What is the role of the CONV/IN pin on TMP05BRTZ-REEL, and how does it affect measurement rate?
The CONV/IN pin on TMP05BRTZ-REEL determines conversion rate in continuously converting and one-shot modes: pulled high → nominal rate (TH = 34 ms, TL ≈ 65 ms at 25°C); pulled low → quarter-period rate (TH = 8.5 ms); left floating → double-high/quarter-low rate (TH = 68 ms). In daisy-chain mode, it functions as the PWM input from the preceding device. This dual-role pin enables flexible timing control without additional configuration registers-simplifying hardware design while supporting adaptive sampling strategies in the TMP05BRTZ-REEL.
Why is a 0.1 µF decoupling capacitor mandatory near the VDD pin of TMP05BRTZ-REEL?
A 0.1 µF multilayer ceramic capacitor placed adjacent to the VDD pin of TMP05BRTZ-REEL is mandatory to suppress high-frequency supply noise generated by the internal Σ-Δ modulator and output driver. Without it, self-heating, output jitter, and accuracy degradation occur-especially critical for achieving the specified ±0.5°C typical accuracy at 25°C. The capacitor stabilizes the reference and sensor bias networks, ensuring consistent VPTAT generation and comparator performance. This requirement is explicitly stated in both TMP05B/TMP06B specifications tables and the "Supply Decoupling" application note section of the TMP05BRTZ-REEL datasheet.
TMP05BRTZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 150°C
- Sensing Temperature - Remote:
- -
- Output Type:
- PWM
- Voltage - Supply:
- 3V ~ 5.5V
- Resolution:
- -
- Features:
- One-Shot
- Accuracy - Highest (Lowest):
- ±2°C (±5°C)
- Test Condition:
- 0°C ~ 70°C (-40°C ~ 150°C)
- Operating Temperature:
- -40°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-5
TMP05BRTZ-REEL FAQ
1.How can I place an order for TMP05BRTZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP05BRTZ-REEL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMP05BRTZ-REEL reliable?
The price and inventory of TMP05BRTZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP05BRTZ-REEL is usually 5 days.
3.What payment methods are accepted for TMP05BRTZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP05BRTZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP05BRTZ-REEL?
TMP05BRTZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP05BRTZ-REEL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMP05BRTZ-REEL?
For technical support, including TMP05BRTZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP05BRTZ-REEL requirements.
6.How does Aetrix verify that TMP05BRTZ-REEL is sourced from the original manufacturer or authorized distributors?
All TMP05BRTZ-REEL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMP05BRTZ-REEL meets industry standards.
7.What is the process for return or replacement of TMP05BRTZ-REEL?
All TMP05BRTZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with TMP05BRTZ-REEL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMP05BRTZ-REEL part is unused and in its original packaging.
Return procedure for TMP05BRTZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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