ADT7485A Datasheet, PDF (1/12 Pages) Analog Devices – SST Digital Temperature Sensor and Voltage Monitor

ADT7485A
Temperature Sensor and
Voltage Monitor with
Simple Serial Transport
The ADT7485A is a digital temperature sensor and voltage monitor
for use in PC applications with Simple Serial Transport (SST)
interface. It can monitor its own temperature as well as the
temperature of a remote sensor diode. It can also monitor four external
voltage channels and its own supply voltage. The ADT7485A is
controlled by a single SST bidirectional data line. This device is a
fixed−address SST client where the target address is chosen by the
state of the address pin, ADD.
Features
• 1 On−Chip Temperature Sensor
• 1 Remote Temperature Sensor
• Monitors Up to 5.0 Voltages
• SST Interface
• This is a Pb−Free Device
Applications
• Personal Computers
• Portable Personal Devices
• Industrial Sensor Nets
http://onsemi.com
MARKING
DIAGRAM
1
MSOP−10
CASE 846AC
10
T21
RYWG
G
1
T21 = Device Code
R = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
PIN ASSIGNMENT
V_CC 1
GND 2
D1+ 3
D1– 4
12 V 5
10 SST
9 ADD
ADT7485A ^{8 2.5 V}
7 V_CCP
6 5.0 V
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
V_CC
12 V
5.0 V
V_CCP
2.5 V
D1+
D1−
ON−CHIP
TEMPERATURE
SENSOR
ADT7485A
OFFSET REGISTERS
INPUT
ATTENUATORS
AND
ANALOG
MULTIPLEXER
TEMPERATURE
VALUE REGISTERS
A/D
CONVERTER
VOLTAGE
VALUE REGISTERS
SST INTERFACE
ADDRESS
SELECTION
GND
Figure 1. Functional Block Diagram
SST
ADD
© Semiconductor Components Industries, LLC, 2010
1
April, 2010 − Rev. 3
Publication Order Number:
ADT7485A/D