Specifications
| Type | Description |
|---|---|
| Part Number | TMP124 |
| Manufacturer | Texas Instruments |
| Product Type | Digital temperature sensor |
| Category | Sensor |
| Package / Case | SO-8, package designator D |
| Interface | SPI-compatible digital output; condition: TMP124 device interface |
| Programmable Resolution | 9 to 12 bits + sign; condition: selectable resolution |
| Temperature Accuracy | ±0.5 °C typ, ±1.5 °C max; condition: TA = -25 °C to +85 °C, V+ = 2.7 V to 5.5 V |
| Temperature Accuracy | ±1.0 °C typ, ±2.0 °C max; condition: TA = -40 °C to +125 °C, V+ = 2.7 V to 5.5 V |
| Temperature Accuracy | ±1.5 °C typ; condition: TA = -55 °C to +150 °C, V+ = 2.7 V to 5.5 V |
| Temperature Input Range | -40 °C min, +125 °C max; condition: specified temperature input range |
| Accuracy vs Supply | -0.3 °C/V min, 0.1 °C/V typ, +0.3 °C/V max; condition: V+ = 2.7 V to 5.5 V |
| Temperature Resolution | ±0.0625 °C; condition: specified for 12-bit resolution |
| Input Logic High Voltage | 0.7 × V+ min; condition: digital input logic level |
| Input Logic Low Voltage | 0.3 × V+ max; condition: digital input logic level |
| Input Current | ±1 µA max; condition: SO/I, SCK, CS; 0 V ≤ VIN ≤ V+ |
| SO/I Output Low Voltage | 0.4 V max; condition: ISINK = 3 mA |
| SO/I Output High Voltage | V+ - 0.4 V min; condition: ISOURCE = 2 mA |
| ALERT Output Low Voltage | 0.4 V max; condition: ISINK = 4 mA |
| ALERT Leakage Current | ±1 µA max; condition: 0 V ≤ VIN ≤ 6 V |
| Input Capacitance | 2.5 pF typ; condition: SO/I, SCK, CS, ALERT pins |
| Conversion Time | 30 ms typ, 40 ms max; condition: 9-bit + sign resolution |
| Conversion Time | 60 ms typ, 80 ms max; condition: 10-bit + sign resolution |
| Conversion Time | 120 ms typ, 160 ms max; condition: 11-bit + sign resolution |
| Conversion Time | 240 ms typ, 320 ms max; condition: 12-bit + sign resolution |
| Supply Voltage Operating Range | 2.7 V min, 5.5 V max; condition: normal operation |
| Quiescent Current | 50 µA typ, 75 µA max; condition: serial bus inactive |
| Shutdown Current | 0.1 µA typ, 1 µA max; condition: serial bus inactive |
| Specified Temperature Range | -40 °C min, +125 °C max; condition: electrical specifications |
| Operating Temperature Range | -55 °C min, +150 °C max; condition: device operating range |
| Storage Temperature Range | -60 °C min, +150 °C max; condition: device storage range |
| Thermal Resistance | 150 °C/W; condition: SO-8 surface-mount package, θJA |
| Absolute Maximum Supply Voltage | 7 V; condition: power supply V+ absolute maximum rating |
| Absolute Maximum Input Voltage | -0.3 V to 7 V; condition: applies to all TMP122 and TMP124 input voltages |
| Absolute Maximum Input Current | 10 mA; condition: input current absolute maximum rating |
| Junction Temperature | +150 °C max; condition: TJ absolute maximum rating |
| Lead Temperature | +300 °C max; condition: soldering |
| Ordering Number | TMP124AID; condition: SO-8 package, rails, quantity 100 |
| Ordering Number | TMP124AIDR; condition: SO-8 package, tape and reel, quantity 2500 |
| Package Marking | T124; condition: TMP124 SO-8 package |
| Datasheet Status | request_only |
Product Overview
The TMP124 is a Texas Instruments digital temperature sensor for SPI-compatible temperature reporting. It supports programmable resolution from 9 to 12 bits plus sign, allowing conversion time to scale from 30 ms typical at 9-bit plus sign resolution to 240 ms typical at 12-bit plus sign resolution. At 12-bit resolution, the specified temperature resolution is ±0.0625 °C.
Electrical operation is specified from a 2.7 V to 5.5 V supply. Temperature accuracy is listed as ±0.5 °C typical and ±1.5 °C maximum over -25 °C to +85 °C, and ±1.0 °C typical and ±2.0 °C maximum over -40 °C to +125 °C. The specified temperature input range is -40 °C to +125 °C, while the device operating range extends from -55 °C to +150 °C.
The device is supplied in an SO-8 surface-mount package with package designator D and a 150 °C/W θJA thermal resistance. Ordering numbers include TMP124AID for rails and TMP124AIDR for tape and reel. Applications are centered on SPI-based digital temperature measurement, low-current monitoring, and systems requiring shutdown current down to 0.1 µA typical.
Key Features
- SPI-compatible digital output for TMP124 device interface
- Selectable 9 to 12 bits plus sign resolution
- ±0.0625 °C temperature resolution at 12-bit resolution
- 2.7 V to 5.5 V normal operating supply range
- 50 µA typical quiescent current with inactive serial bus
- 0.1 µA typical shutdown current with inactive serial bus
- -40 °C to +125 °C specified temperature input range
- -55 °C to +150 °C device operating temperature range
- SO-8 surface-mount package with 150 °C/W θJA
- ALERT output low voltage 0.4 V maximum at 4 mA
Typical Applications
- SPI temperature monitoring
- Digital temperature measurement
- Low-current sensor nodes
- Extended-temperature operation
- SO-8 surface-mount assemblies
- ALERT-based temperature signaling
- 12-bit temperature sensing
Procurement Notes
When requesting a quote for TMP124, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What interface does the TMP124 temperature sensor use?
The TMP124 uses an SPI-compatible digital output interface. The extracted datasheet facts identify this as the TMP124 device interface, with SO/I, SCK, CS, and ALERT pins included in the listed input capacitance condition.
What supply voltage range is specified for TMP124 operation?
Normal operation is specified from 2.7 V minimum to 5.5 V maximum. The absolute maximum supply voltage rating is 7 V, which is a stress rating and not the normal operating supply range.
What temperature accuracy is listed for the TMP124?
Over -25 °C to +85 °C with V+ from 2.7 V to 5.5 V, accuracy is ±0.5 °C typical and ±1.5 °C maximum. Over -40 °C to +125 °C, it is ±1.0 °C typical and ±2.0 °C maximum.
What package and ordering numbers are available for TMP124?
The package is SO-8 with package designator D and package marking T124. Ordering numbers listed in the extracted facts are TMP124AID for rails quantity 100 and TMP124AIDR for tape and reel quantity 2500.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 7, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.