MAX6662 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – 12-Bit + Sign Temperature Sensor with SPI-Compatible Serial Interface

19-2121; Rev 0; 7/01
12-Bit + Sign Temperature Sensor with
SPI-Compatible Serial Interface
General Description
The MAX6662 is a 12-bit + sign temperature sensor
combined with a programmable overtemperature alarm
and a 3-wire (SPI™-compatible) serial interface in a sin-
gle package. It converts its die temperature into digital
values using an internal analog-to-digital converter
(ADC). The temperature data is stored in a temperature
register as a 13-bit word, which allows 0.0625°C resolu-
tion. The temperature data is readable at any time
through the serial interface. The operating temperature
range is -55°C to +150°C.
The MAX6662 provides two programmable watchdog
interrupt outputs. ALERT is used for lower temperature
warning functions, while OT is used for higher tempera-
ture-critical functions, such as power-supply shutdown.
The MAX6662 features a shutdown mode that saves
power by disabling everything except the serial inter-
face. The temperature sensor is available in an 8-pin SO
package.
Features
♦ 12-Bit + Sign, 0.0625°C Resolution
♦ Accuracy
±1°C max (+30°C to +50°C)
±1.6°C max (0°C to +70°C)
±2.5°C max (-20°C to +85°C)
±2.5 typ (+150°C)
♦ Extended Temperature Measurement Range
-55°C to +150°C
♦ Low Average Supply Current, 125µA (typ)
♦ Shutdown Mode to Minimize Power Consumption
in Portable Applications
♦ Two Programmable Temperature Fault Outputs
♦ Switchable Fault Queue to Eliminate False
Tripping in Noisy Environments
HVAC
Refrigeration
Automotive
Test Equipment
Applications
PART
MAX6662MSA
Ordering Information
TEMP. RANGE
-55°C to +150°C
PIN-PACKAGE
8 SO
HEAT
SOURCES
Typical Operating Circuit
V_CC = +3V TO +5.5V
0.1µF
V_CC
MAX6662
10kΩ
OT
ALERT
SIO
SCLK
CS
10kΩ
TOP VIEW
Pin Configuration
SCLK 1
CS 2
SIO 3
GND 4
MAX6662
8 V_CC
7 NC
6 ALERT
5 OT
SO
SPI is a trademark of Motorola, Inc.
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