Datasheet

MCP9808

5.0 FUNCTIONAL DESCRIPTION

The MCP9808 temperature sensors consist of a band-

gap-type temperature sensor, a Delta-Sigma Analog-to-

Digital Converter (ΔΣ ADC), user-programmable

registers and a 2-wire SMBus/I

C protocol compatible

serial interface. Figure 5-1 shows a block diagram of the

FIGURE 5-1: Functional Block Diagram.

Clear Alert

+0.5°C

+0.25°C

+0.125°C

+0.0625°C

Temperature

LOWER

Limit

Configuration

ΔΣ

ADC

Band Gap

Temperature

Sensor

Alert Status

Output Control

Critical Alert Only

Alert Polarity

Alert Comp/Int

CRITICAL

Limit

Pointer

Critical Trip Lock

Alarm Win. Lock

Shutdown

Hysteresis

Manufacturer ID

Resolution

Device ID/Rev

SMBus/Standard I

C™

Interface

Alert

SDA

SCL

GND

UPPER

Limit