CMV2000 datasheet(23/87 Pages) AMSOSRAM

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CMV2000

Functional description

Datasheet

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• v8-00 • 2025-Jul-07

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7.1.6

Temperature sensor

A 16-bit digital temperature sensor is included in the image sensor and can be controlled by

the SPI-interface. The on-chip temperature can be obtained by reading out the registers with

address 126 and 127 (in burst mode, see chapter 7.2.8.2 for more details on this mode).

A calibration of the temperature sensor is needed for absolute temperature measurements per

device because the offset differs from device to device. The temperature sensor requires a

running input clock (CLK_IN), the other functions of the image sensor can be operational or in

standby mode. The output value of the sensor is dependent on the input clock. A typical

temperature sensor output vs. temperature curve at 40 MHz can be found in Figure 13. The

die temperature will be about 10 °C~15 °C higher than ambient temperature. The ceramic

package has about the same temperature as the die.

The typical (offset) value of the temperature sensor at 0 °C would be: 1000* (f [MHz])/40 DN.

This offset can differ per device. A typical slope would be around 0.3*40/f[MHz] °C/DN.

Figure 13: Typical output of the temperature sensor of the CMV2000

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Temperature (C)

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