Five-Channel Precision Temperature Monitor

_______________________________________________________________________________________

5

REMOTE TEMPERATURE ERROR

vs. COMMON-MODE NOISE FREQUENCY

FREQUENCY (MHz)

1

0.1

0.01

-4

-3

-2

-1

0

1

2

3

4

5

-5

0.001

10

Typical Operating Characteristics (continued)

TEMPERATURE ERROR

vs. DXP-DXN CAPACITANCE

DXP-DXN CAPACITANCE (nF)

10

-4.5

-4.0

-3.5

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0

-5.0

1100

Pin Description

PIN

NAME

FUNCTION

1

DXP1

Combined Current Source and A/D Positive Input for Channel 1 Remote Diode. Connect to the anode

of a remote-diode-connected temperature-sensing transistor. Leave floating or connect to DXN1 if no

remote diode is used. Place a 2200pF capacitor between DXP1 and DXN1 for noise filtering.

2

DXN1

Cathode Input for Channel 1 Remote Diode. Connect the cathode of the channel 1 remote-diode-

connected transistor to DXN1.

3

DXP2

Combined Current Source and A/D Positive Input for Channel 2 Remote Diode. Connect to the anode

of a remote-diode-connected temperature-sensing transistor. Leave floating or connect to DXN2 if no

remote diode is used. Place a 2200pF capacitor between DXP2 and DXN2 for noise filtering.

4

DXN2

Cathode Input for Channel 2 Remote Diode. Connect the cathode of the channel 2 remote-diode-

connected transistor to DXN2.

5

DXP3

Combined Current Source and A/D Positive Input for Channel 3 Remote Diode. Connect to the anode

of a remote-diode-connected temperature-sensing transistor. Leave floating or connect to DXN3 if no

remote diode is used. Place a 2200pF capacitor between DXP3 and DXN3 for noise filtering.

6

DXN3

Cathode Input for Channel 3 Remote Diode. Connect the cathode of the channel 1 remote-diode-

connected transistor to DXN3.