JAJSHZ0A April 2013 – September 2019 TMP108
PRODUCTION DATA.
The conversion rate bits, CR1 and CR0, configure the TMP108 for conversion rates of 0.25 Hz, 1 Hz, 4 Hz, or 16 Hz. The default rate is 1 Hz. The TMP108 has a typical conversion time of 27 ms. To achieve different conversion rates, the TMP108 makes a conversion, and then powers down and waits for the appropriate delay set by CR1 and CR0. Table 10 shows the settings for CR1 and CR0.
CR1 | CR0 | CONVERSION RATE | IQ (TYP) |
---|---|---|---|
0 | 0 | 0.25 Hz | 1 μA |
0 | 1 | 1 Hz (default) | 2 μA |
1 | 0 | 4 Hz | 5 μA |
1 | 1 | 16 Hz | 18 μA |
After power-up or a general-call reset, the TMP108 immediately starts a conversion, as shown in Figure 12. The first result is available after 27 ms (typical). The active quiescent current during conversion is 40 μA (typical at +25°C). The quiescent current during delay is 0.7 μA (typical at +25°C).