sensors

TMP112

Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the TMP112 does

The TMP112 is a precision, low-power digital temperature sensor featuring SMBus and two-wire interfaces. It operates on a 1.4V to 3.6V supply with 12-bit resolution and 0.0625°C accuracy. The device supports a -40°C to +125°C measurement range and consumes as little as 10μA in active mode. Typically used for portable battery-powered applications, power monitoring, and computer overheat protection, the TMP112 eliminates the need for external components while providing system management bus compatibility for multi-device integration.

Next step
Start building with TMP112 → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
01 — Key specifications

Datasheet parameters

Datasheet parameters for TMP112
ParameterMinTypMaxConditionsSource
supply voltage range 1.4 V — 3.6 V TI datasheet, p. 3
operating temperature -40 °C — 125 °C TI datasheet, p. 3 — 电气特性
standby current — 500 nA — SD 位 = '1' 关断模式 TI datasheet, p. 9
rise time — — 300 ns 时钟/数据上升时间; tr TI datasheet, p. 13 — 表 14. 时序图定义
fall time — — 300 ns 时钟/数据下降时间; tf TI datasheet, p. 13 — 表 14. 时序图定义
sample rate — 4 Hz — 默认值 (CR1 = 1, CR0 = 0) TI datasheet, p. 9 — 表 9. 转换率设置
02 — Alternatives

Closest matches to TMP112

LTR-308ALS-01 2.5× higher sample rate, 2.0× higher standby current, 1.9× lower operating temperature
TMP102 3.3× lower standby current, 1.3× higher supply voltage range, similar fall time
SHT30-DIS 2.5× higher sample rate, 1.3× higher supply voltage range, similar fall time
DS18B20 1.6× lower sample rate, 1.6× higher supply voltage range, 1.5× higher standby current
ICM-42607-C 1.9× lower operating temperature, 1.4× lower supply voltage range, similar fall time
MAX31820 3.0× lower sample rate, 1.5× higher standby current, 1.3× higher supply voltage range
MAX31820MCR+ 3.0× lower sample rate, 1.5× higher standby current, 1.3× higher supply voltage range
MAX31865 13.8× higher sample rate, 1.5× lower rise time, 1.3× higher supply voltage range
03 — FAQ

Frequently asked questions

What is the fall time (tf) for the TMP112?

The fall time (tf) is 300 ns.

What is the maximum operating temperature for the TMP112?

The operating temperature is 125 °C.

What is the rise time (tr) for the TMP112?

The rise time (tr) is 300 ns.

What is the default sample rate when CR1 = 1 and CR0 = 0?

The default sample rate is 4 Hz when CR1 = 1 and CR0 = 0.

What is the standby current when the SD bit is '1' (shutdown mode)?

The standby current is 500 nA when the SD bit is '1' (shutdown mode).

What is the supply voltage range for the TMP112?

The supply voltage range is 3.6 V.

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