Datasheet

LM95235

LM95235-Q1

www.ti.com

SNIS142F –APRIL 2006–REVISED MARCH 2013

Table 3. Address Selection

SMBus Device Address

State of the A0 Pin

HEX Binary

Low 18 001 1000

Mid-Supply 29 010 1001

High 4C 100 1100

The OS/A0 pin, after power-up, defaults as an address select input pin (A0). After power-up, the OS/A0 pin can

only be programmed as an OS output when it is in the “High” state. Therefore, 4Ch is the only valid slave

address that can be used when the OS/A0 pin is programmed to function as an OS output. When the OS/A0 pin

is programmed to function as an A0 input the LM95235 will immediately detect the state of this pin to determine

its SMBus slave address. The LM95235 does not latch the state of the A0 pin when it is functioning as an input.

DIGITAL FILTER

In order to suppress erroneous remote temperature readings due to noise, the LM95235 incorporates a digital

filter for the Remote Temperature Channel. The filter is accessed in the Configuration Register 2, bits D2 (FE1)

and D1(FE0). The filter can be set according to the following table.

FE1 FE0 Filter Setting

0 0 Filter Off

0 1 Reserved

1 0 Reserved

1 1 Filter On

Figure 8 through Figure 10 depict the filter output in response to a step input and an impulse input.

Figure 8. Filter Impulse and Step Response Curve Figure 9. Filter Impulse and Step Response Curve

Seventeen and Fifty Degree Step Response Impulse Response with Input Transients Less

Than 4°C

Product Folder Links: LM95235 LM95235-Q1