TMP464 is a 5-channel (4 remote and 1 local) high precision remote and local temperature sensor

The TMP464 device is a high precision, ADS1286UB low power temperature sensor C compatible interface using a two-wire, SMBus or I2. In addition to local temperature, up to four remote diode-connected temperature zones can be monitored simultaneously. Aggregating temperature measurements across the system can improve performance with tighter guard bands and can reduce board complexity. A typical use case is monitoring the temperature of different processors such as MCUs, GPUs and FPGAs in complex systems such as servers and telecom equipment. Advanced features such as series resistance cancellation, programmable non-ideality factor, programmable offset and programmable temperature limit are included to provide a robust thermal monitoring solution with increased accuracy and noise immunity.

Each of the four remote channels (and local channels) can be independently programmed with two thresholds that are triggered when the measurement location exceeds the corresponding temperature. Additionally, there is a programmable hysteresis setting to avoid constant switching around the threshold.

The TMP464 device provides high-accuracy (0.75°C) and high-resolution (0.0625°C) measurements. The device supports low-voltage rails (1.7 V to 3.6 V), common two-wire interfaces, and is available in a small, space-saving package (3 mm × 3 mm) for easy integration into computing systems. The remote junction supports a temperature range of –55°C to +150°C. The TMP464 has a pre-programmed temperature limit of 125°C.

characteristic:

4-channel remote diode temperature sensor

● Local and remote accuracy: ±0.75°C (max)

●Temperature resolution: 0.0625°C

●Power and logic voltage range: 1.7V to 3.6V

43μA operating current (1 SPS, all channels active)

●0.3μA shutdown current

Remote diodes: series resistance cancellation, η coefficient correction, offset correction and diode fault detection

●Register lock function protects the key register

●I 2 C or SMBus™ compatible two-wire interface with pin programmable address

16-pin VQFN package

parameter:

Local Sensor Accuracy (Max) (+/- C): 0.75

Type: remote

Operating Temperature Range (°C): -40 to 125

Supply voltage (Min) (V): 1.7

Interface type: I2C, SMBus

Supply voltage (Max) (V): 3.6

Supply Current (Max) (uA): 375

Temperature Resolution (Max) (Bits): 13

Feature: Alert

Remote Channels (#): 4

Address: 4