Datasheet

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 single
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 resolution. The tem-
perature 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 interface.
The temperature sensor is available in an 8-pin SO pack-
age.
Applications
● HVAC
● Refrigeration
● Test Equipment
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
PART TEMP. RANGE PIN-PACKAGE
MAX6662MSA -55°C to +150°C 8 SO
ALERT
OTGND
1
2
8
7
V
CC
NCCS
SIO
SCLK
SO
TOP VIEW
3
4
6
5
MAX6662
10kΩ
10kΩ
0.1µF
V
CC
OT
ALERT
SIO
SCLK
CS
SYSTEM
CONTROLLER
V
CC
= +3V TO +5.5V
HEAT
SOURCES
MAX6662
MAX6662 12-Bit + Sign Temperature Sensor with
SPI-Compatible Serial Interface
19-2121; Rev 1; 4/14
Pin CongurationTypical Operating Circuit
Ordering Information
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