Datasheet

TMP421
TMP422
TMP423
SBOS398C –JULY 2007–REVISED MAY 2012 www.ti.com
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (March 2008) to Revision C Page
• Removed package name from title ....................................................................................................................................... 1
• Added new DSBGA package to feature bullet ...................................................................................................................... 1
• Added TMP421C device to Description section ................................................................................................................... 1
• Added TMP421C device with DSBGA package to Package Information table .................................................................... 2
• Added new Electrical Characteristics table for TMP421C .................................................................................................... 4
• Changed V+ pin voltage range in all Pin Assignment tables from 2.7V to 2.55V ................................................................ 5
• Added DSBGA package to TMP421 Pin Configuration section ........................................................................................... 5
• Changed supply voltage minimum range for pin 8 from 2.55V to 2.7V in TMP422 Pin Assignments table ........................ 5
• Changed supply voltage minimum range for pin 8 from 2.55V to 2.7V in TMP423 Pin Assignments table ........................ 6
• Changed label from V
S
to V+ and value from 2.7V to 2.55V in Figure 4 ............................................................................. 7
• Changed label from V
S
to V+ and value from 2.7V to 2.55V in Figure 5 ............................................................................. 8
• Changed label from V
S
to V+ and value from 2.7V to 2.55V in Figure 8 ............................................................................. 8
• Added new DSBGA package text to first paragraph of Application Information section ...................................................... 9
• Changed text in first paragraph of Application Information section ...................................................................................... 9
• Changed text in first paragraph of Application Information section to clarify temperature measurement channels ............ 9
• Changed text in last paragraph of Application Information section ...................................................................................... 9
• Changed minimum temperature value for bit 2 = 0 from –55°C to –40°C in Table 5 ......................................................... 14
• Changed header row for Table 6 ........................................................................................................................................ 15
• Changed V
S
to V+ in Table 7 .............................................................................................................................................. 16
• Added "(for SOT23 package)" to end of Measurement Accuracy and Thermal Considerations section ........................... 24
• Changed V
DD
to V+ in bullet 2 of Layout Considerations section ....................................................................................... 24
• Added TMP421C to Figure 21 ............................................................................................................................................ 25
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Product Folder Link(s): TMP421 TMP422 TMP423