Maleetronic

MLT - ADT7422 Digital I²C Temperature Sensor [ available ]

The ADT7422 is a high accuracy, digital I ² C temperature sensor.

The ADT7422 contains an internal band gap reference, a temperature sensor, and a precision analog-to-digital converter(ADC). The ADT7422 provides a 16-bit temperature result with a resolution of 0.0078°C and an accuracy of up to ±0.1°C across the temperature range of 25°C to 50°C without the need for calibration after the PCB soldering process.

The I2C adress is "00" by default, it can be changed with the solder jumpers.

CT and INT have 10k Ohm pull up resistors and are available on the pin header as well as the I2C signal lines SCL and SDA.

The board has 4 layers with final thickness of 1 mm, please see the other dimensions from the layout.

The board ships with unsoldered right angled IDC pin header.

Photos:

MLT - LMT70 Small Probe Board [ available ]

The Small probe board is a very small board based on TI’s high accuracy, high precision analog output temperature sensor LMT70A.

The design was produced according to TI’s application note. You can find it under Downloads.

Photos:

MLT - LMT70 Flex Probe [ available ]

The LMT70 flex probe is just a little bit bigger in dimension. About 3 x 4 mm measures the head. It has an bypass cap on board and the contacts are feed away from the board with a flexible circuit board to an easy and bread-board-friendly 3 pin IDC header with convenient 2.54mm (100mil) pitch. Below are a few pictures.

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Downloads:

Click here to download the datasheet for the ADT7422. [1.4MB]
Click here to download the datasheet for the MLT70. [1.4MB]
Click here to download the TI application note. [260kB]
Click here to download the solder instruction for the small probe board. [3.8MB]
Click here to download the hardware manual for the flexprobe. [800kB]
Click here to download the design files for the flexprobe [345kB]