Specifications
| Type | Description |
|---|---|
| Part Number | TMP103 |
| Manufacturer | Texas Instruments |
| Product Type | Digital temperature sensor |
| Category | Sensor |
| Package / Case | DSBGA (YFF), 4-ball WCSP, 0.76 mm x 0.76 mm nominal body |
| Sensor Type | Digital output temperature sensor; TMP103 device description |
| Temperature Resolution | 1 °C; temperature measurement resolution |
| Digital Resolution | 8 bits; temperature output resolution |
| Temperature Accuracy | ±1 °C typical; -10 °C to 100 °C |
| Temperature Error | -2 °C min, 0 °C typ, 2 °C max; -10 °C to 100 °C, V+=1.8 V |
| Temperature Error | -3 °C min, ±1 °C typ, 3 °C max; -40 °C to 125 °C, V+=1.8 V |
| Temperature Input Range | -40 °C to 125 °C; electrical characteristics |
| Specified Temperature Range | -40 °C to 125 °C; electrical characteristics |
| Operating Temperature Range | -55 °C to 150 °C; electrical characteristics |
| Recommended Operating Free-Air Temperature | -40 °C to 125 °C; recommended operating conditions |
| Supply Voltage | 1.4 V min, 3.6 V max; recommended operating conditions |
| Operating Supply Range | 1.4 V min, 3.6 V max; electrical characteristics |
| Absolute Maximum Supply Voltage | 4 V max; absolute maximum ratings |
| SCL and SDA Pin Voltage | -0.3 V min, (V+)+0.3 V and <=4 V max; absolute maximum ratings |
| Shutdown Current | 0.5 µA typ, 1 µA max; serial bus inactive, V+=1.8 V |
| Quiescent Current | 1.5 µA typ, 3 µA max; serial bus inactive, CR1=0, CR0=0 default, V+=1.8 V |
| Quiescent Current | 15 µA typ; serial bus active, SCL frequency=400 kHz |
| Quiescent Current | 85 µA typ; serial bus active, SCL frequency=3.4 MHz |
| Shutdown Current | 10 µA typ; serial bus active, SCL frequency=400 kHz |
| Shutdown Current | 80 µA typ; serial bus active, SCL frequency=3.4 MHz |
| Conversion Time | 26 ms min, 35 ms max; TA=25 °C, V+=1.4 V to 3.6 V |
| Conversion Rate | 0.25 conversions/s; CR1=0, CR0=0 default |
| Conversion Rate | 1 conversion/s; CR1=0, CR0=1 |
| Conversion Rate | 4 conversions/s; CR1=1, CR0=0 |
| Conversion Rate | 8 conversions/s; CR1=1, CR0=1 |
| Interface | Two-wire, I2C-compatible and SMBus-compatible; device description and timing section |
| Multiple Device Access | Up to 8 TMP103 devices on one bus; MDA commands supported |
| SCL Operating Frequency | 0.001 MHz min, 0.4 MHz max; fast mode, VS > 1.7 V |
| SCL Operating Frequency | 0.001 MHz min, 3.4 MHz max; high-speed mode, VS > 1.7 V |
| SCL Operating Frequency | 0.001 MHz min, 2.75 MHz max; high-speed mode, VS < 1.7 V |
| Input Logic High Voltage | 0.7 x V+ min, V+ max; digital input/output |
| Input Logic Low Voltage | -0.5 V min, 0.3 x V+ max; digital input/output |
| Input Current | 1 µA max; 0 < VIN < (V+)+0.3 V |
| SDA Output Logic Low Voltage | 0 V min, 0.4 V max; V+ > 2 V, IOL=2 mA |
| SDA Output Logic Low Voltage | 0 V min, 0.2 x V+ max; V+ < 2 V, IOL=2 mA |
| Timeout Time | 30 ms min, 40 ms max; electrical characteristics |
| ESD Rating HBM | ±2000 V; ANSI/ESDA/JEDEC JS-001, all pins |
| ESD Rating CDM | ±1000 V; JEDEC JESD22-C101, all pins |
| ESD Rating MM | ±200 V; machine model |
| Junction-to-Ambient Thermal Resistance | 160 °C/W; YFF DSBGA, 4 balls |
| Junction-to-Case Top Thermal Resistance | 75 °C/W; YFF DSBGA, 4 balls |
| Junction-to-Board Thermal Resistance | 76 °C/W; YFF DSBGA, 4 balls |
| Datasheet Status | request_only |
Product Overview
The TMP103 is a Texas Instruments digital output temperature sensor intended for temperature measurement over a specified -40 °C to 125 °C range. It reports temperature with 8-bit digital resolution and 1 °C measurement resolution. Accuracy is specified as ±1 °C typical from -10 °C to 100 °C, with temperature error limits also defined across both -10 °C to 100 °C and -40 °C to 125 °C at V+=1.8 V.
The device operates from a recommended 1.4 V to 3.6 V supply, with a 4 V absolute maximum supply rating. It supports a two-wire, I2C-compatible and SMBus-compatible interface. Bus operation includes fast mode up to 0.4 MHz and high-speed mode up to 3.4 MHz when VS is above 1.7 V, or 2.75 MHz when VS is below 1.7 V.
TMP103 is packaged in a DSBGA (YFF), 4-ball WCSP with a 0.76 mm x 0.76 mm nominal body. The device supports configurable conversion rates from 0.25 conversions/s to 8 conversions/s and multiple-device access for up to 8 TMP103 devices on one bus.
Key Features
- Digital output temperature sensor with 8-bit output resolution
- 1 °C temperature measurement resolution
- ±1 °C typical accuracy from -10 °C to 100 °C
- -40 °C to 125 °C specified temperature range
- 1.4 V to 3.6 V recommended supply range
- Two-wire I2C-compatible and SMBus-compatible interface
- Supports up to 8 TMP103 devices per bus
- Configurable conversion rates from 0.25 to 8 conversions/s
- High-speed SCL operation up to 3.4 MHz above 1.7 V
- DSBGA 4-ball WCSP, 0.76 mm x 0.76 mm body
Typical Applications
- Digital temperature measurement
- I2C temperature sensor buses
- SMBus temperature sensor buses
- Low-voltage sensor systems
- Multi-device temperature monitoring
- Compact WCSP sensor layouts
- -40 °C to 125 °C sensing
Procurement Notes
When requesting a quote for TMP103, 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 type of sensor is the TMP103?
The TMP103 is a Texas Instruments digital output temperature sensor. It provides 8-bit digital temperature output with 1 °C measurement resolution and uses a two-wire interface compatible with I2C and SMBus communication.
What supply voltage range does TMP103 support?
The TMP103 recommended operating supply range is 1.4 V minimum to 3.6 V maximum. The same 1.4 V to 3.6 V range is listed in the electrical characteristics, while the absolute maximum supply voltage is 4 V.
What package is used for the TMP103?
The TMP103 is supplied in a DSBGA (YFF), 4-ball WCSP package. The nominal body size is 0.76 mm x 0.76 mm, and the extracted thermal data is specified for the YFF DSBGA, 4-ball package.
How many TMP103 devices can share one bus?
The TMP103 supports multiple device access commands that allow up to 8 TMP103 devices on one bus. Its interface is described as two-wire, I2C-compatible and SMBus-compatible.
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.