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TMP422

DX1

(4)

DX2

(4)

5

2

1

R

S

(2)

R

S

(2)

C

DIFF

(3)

C

DIFF

(3)

R

S

(2)

R

S

(2)

GND

Diode-connectedconfiguration

:

(1)

SeriesResistance

Transistor-connectedconfiguration

:

(1)

DX3

(4)

DX4

(4)

4

3

R

S

(2)

R

S

(2)

C

DIFF

(3)

0.1 F

m

10kW

(typ)

10kW

(typ)

V+

8

7

6

SCL

SDA

+5V

SMBus

Controller

DXP1

DXN1

DXP2

DXN2

+5V

TMP423

DXP1

DXP2

DXP3

DXP

DXN

DXN

SCL

GND

SDA

V+

2

3

4

7

1

6

8

R

S

(2)

R

S

(2)

R

S

(2)

R

S

(2)

R

S

(2)

R

S

(2)

C

DIFF

(3)

C

DIFF

(3)

C

DIFF

(3)

Transistor-connectedconfiguration

:

(1)

C

DIFF

(3)

R

S

(2)

R

S

(2)

Diode-connectedconfiguration

:

(1)

5

0.1 F

m

10kW

(typ)

10kW

(typ)

SMBus

Controller

SeriesResistance

TMP421

TMP422

TMP423

SBOS398B – JULY 2007 – REVISED MARCH 2008

(1) Diode-connected configuration provides better settling time. Transistor-connected configuration provides better series resistance

cancellation.

Figure 6, Remote Temperature Error vs Differential Capacitance.

(4) TMP422 SMBus slave address is 1001 100 when connected as shown.

Figure 12. TMP422 Basic Connections

(1) Diode-connected configuration provides better settling time. Transistor-connected configuration provides better series resistance

cancellation.

Figure 6, Remote Temperature Error vs Differential Capacitance.

Figure 13. TMP423 Basic Connections

Copyright © 2007–2008, Texas Instruments Incorporated

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Product Folder Link(s): TMP421 TMP422 TMP423