TMP124AIDG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The TMP124AIDG4 is a programmable digital temperature sensor from Texas Instruments in a small SOIC package, delivering 12-bit resolution with ±1.5°C maximum accuracy and an SPI-compatible serial interface. It features programmable alert thresholds, surface-mount package dimensions of 4.9 mm × 3.9 mm × 1.75 mm, and is suited for industrial process monitoring, thermal management in servers, and embedded system temperature control.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TMP124AIDG4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3500(MOQ 142)
- Temp Range
- -55.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TMP124AIDG4?
- 12-bit resolution digital temperature output
- ±1.5°C maximum accuracy over temperature range
- SPI-compatible 3-wire serial interface
- Programmable over-temperature alert threshold
- Surface-mount SOIC package: 4.9 mm × 3.9 mm
- Low quiescent current for battery-powered designs
What is TMP124AIDG4 used for?
The TMP124AIDG4 is used in server and telecom equipment thermal management systems where precise temperature monitoring at 12-bit resolution with SPI readout enables the host processor to adjust fan speeds and throttle workloads before thermal shutdown thresholds are reached. It also serves in industrial process control boards, battery management systems, and medical monitoring instruments that require accurate ±1.5°C temperature measurements over wide operating ranges.
What are the specifications of TMP124AIDG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Accuracy-Max (Cel) | 1.5Cel |
| Body Breadth | 3.9mm |
| Body Height | 1.75mm |
| Body Length or Diameter | 4.9mm |
| Housing | PLASTIC |
| JESD-609 Code | e4 |
| Mounting Feature | SURFACE MOUNT |
| Number of Bits | 12 |
| Operating Current-Max | 0.075mA |
| Output Interface Type | SPI INTERFACE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape/Style | RECTANGULAR |
| Sensors/Transducers Type | TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.7V |
| Surface Mount | YES |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Termination Type | SOLDER |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Taiwan |
Where can I find the TMP124AIDG4 datasheet?
TMP124AIDG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TMP124AIDG4?
Compatible alternatives and drop-in replacements for TMP124AIDG4:
Switch/Digital Sensor, 13 Bit(s), 3Cel, Rectangular, 8 Pin, Surface Mount
Switch/Digital Sensor, 13 Bit(s), 3Cel, Rectangular, 8 Pin, Surface Mount
Frequently Asked Questions
What temperature accuracy and resolution does the TMP124AIDG4 deliver?
The TMP124AIDG4 provides 12-bit resolution corresponding to a temperature step of 0.0625°C per LSB, with a maximum accuracy of ±1.5°C across its operating range. This combination makes it suitable for applications requiring better than 2°C precision without the need for external calibration or lookup tables, such as thermal protection in Li-ion battery packs or FPGA thermal management.
How is the TMP124AIDG4 interfaced to a microcontroller and how many wires does it need?
The TMP124AIDG4 uses a 3-wire SPI-compatible interface with clock, data-out, and chip-select lines, consuming only 3 GPIO pins on the host microcontroller. Multiple TMP124AIDG4 sensors can share the same SPI clock and data bus with individual chip-select lines, enabling multi-point temperature monitoring across a PCB using a single SPI peripheral.
What happens when the TMP124AIDG4 temperature exceeds the programmed alert threshold?
When the measured temperature crosses the programmed over-temperature threshold stored in the TMP124AIDG4's programmable registers, the alert output pin transitions to its active state, which can interrupt the microcontroller or trigger a hardware shutdown signal in as little as one conversion cycle, typically 240 ms at the default 4 Hz conversion rate.
How does the TMP124AIDG4 package size fit into a dense PCB layout next to heat-generating components?
The TMP124AIDG4 is housed in a surface-mount SOIC package measuring 4.9 mm long, 3.9 mm wide, and 1.75 mm tall, occupying under 20 mm² of board area. This compact footprint allows placement within 5 mm of a power transistor, processor, or voltage regulator whose junction temperature must be estimated from board-level measurements, improving thermal model accuracy.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 142+ | $2.1100 | $299.62 |
| 288+ | $1.8355 | $528.62 |
| 500+ | $1.5200 | $760.00 |
| 1000+ | $1.4400 | $1440.00 |
| 10000+ | $1.3500 | $13500.00 |
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