ON Semiconductor dBCool® series ADM1027ARQ, Fan Control and Temp Monitor, ±1°C accuracy, Internal and External Sensor, SMBus output, 3V to 5.5V supply, 24-SSOP package, 0°C to 105°C operating range.
| Parameter | Value |
|---|---|
| Series | dBCool® |
| Output type | SMBus |
| Sensor type | Internal and External |
| Mounting | Surface Mount |
| Supply voltage | 3V ~ 5.5V |
| Operating temperature | 0°C ~ 105°C |
| Package | Bulk |
| Accuracy | ±1°C |
| Function | Fan Control, Temp Monitor |
| Topology | ADC, Comparator, Fan Speed Counter, Multiplexer, Register Bank |
| Output fan | Yes |
| Output alarm | No |
| Case | 24-SSOP (0.154\", 3.90mm Width) |
| Sensing temperature | 0°C ~ 105°C, External Sensor |
Temperature accuracy is rated at ±1°C, which is tight enough for most system-level thermal management — server chassis, telecom line cards, or industrial control enclosures where a few degrees of headroom matter for fan noise vs. airflow balance.
Yes, the output type is SMBus. The part communicates over the System Management Bus, which is standard for server and telecom thermal management interfaces.
The ADM1027ARQ and the ADT7460 are both remote thermal controllers with fan control and ±1°C accuracy, but they are from different manufacturers (ON Semiconductor vs. Analog Devices). Pin compatibility and register maps differ — verify the datasheet for your specific firmware before substituting.