MAX6648MUA+ by Analog Devices

Precision SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms


The MAX6648/MAX6692 are precise, two-channel digital temperature sensors. They accurately measure the temperature of their own die and a remote PN junction, and report the temperature in digital form using a 2-wire serial interface. The remote PN junction is typically the emitter-base junction of a common-collector PNP on a CPU, FPGA, or ASIC. The 2-wire serial interface accepts standard System Management Bus (SMBus™) write byte, read byte, send byte, and receive byte commands to read the temperature data and to program the alarm thresholds. To enhance system reliability, the MAX6648/MAX6692 include an SMBus timeout. A fault queue prevents the active-low ALERT and active-low OVERT outputs from setting until a fault has been detected one, two, or three consecutive times (programmable). The MAX6648/MAX6692 provide two system alarms: active-low ALERT and active-low OVERT. Active-low ALERT asserts when any of four temperature conditions are violated: local overtemperature, remote overtemperature, local undertemperature, or remote undertemperature. Active-low OVERT asserts when the temperature rises above the value in either of the two active-low OVERT limit registers. The active-low OVERT output can be used to activate a cooling fan, or to trigger a system shutdown. Measurements can be done autonomously, with the conversion rate programmed by the user, or in a single-shot mode. The adjustable conversion rate allows the user to optimize supply current and temperature update rate to match system needs. Remote accuracy is ±0.8°C maximum error between +25°C and +125°C with no calibration needed. The MAX6648/MAX6692 operate from -55°C to +125°C, and measure temperatures between 0°C and +125°C. The MAX6648 is available in an 8-pin µMAX® package, and the MAX6692 is available in 8-pin µMAX and SO packages.

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Prices starting from US$1.54

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Features

Dual Channel: Measures Remote and Local Temperature
0.125°C Resolution
High Accuracy: ±0.8°C (max) from +25°C to +125°C (Remote), and ±2°C (max) from +60°C to +100°C (Local)
Two Alarm Outputs: Active-Low ALERT and Active-Low OVERT
Two Default Active-Low OVERT Thresholds Available MAX6648: +110°C MAX6692: +85°C
MAX6648: +110°C
MAX6692: +85°C
Programmable Conversion Rate
SMBus-Compatible Interface
SMBus Timeout
Programmable Under/Overtemperature Alarm Thresholds
Compatible with 90nm, 65nm, and 45nm Process Technology

Specifications

Sensor Type Remote
# Channels One
Interface 2-Wire/I2C/SMBus
Alarm Output AlertOvert
Functions Dual Temperature AlarmsRemote & Local Sensor
Accuracy (±°C) 0.8
Parasite Pwr. No
Temp. Thresh. Programmable
Temp. Resolution (bits) 10
Oper. Temp. (°C) -55 to +125
Package/Pins UMAX/8
BudgetaryPrice (See Notes) 2.05


MAX6648MUA+ Sensors & Transducers by Analog Devices

TEMP SENSOR REMOTE SMBUS 8UMAX

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

IC Output Type Voltage
Sensing Accuracy Range ± 0.8°C
Sensing Temperature Min 0°C
Sensing Temperature Max +125°C
Sensor Case Style µMAX
No. of Pins 8Pins
Supply Voltage Min 3V
Supply Voltage Max 5.5V
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jun-2015)
Base Number 6648
Operating Temperature Max 125°C
Operating Temperature Range 0°C to +125°C
Output Current 6mA
Resolution 10bit
Resolution (Bits) 10bit
Sensor / Transducer Type Temperature
Supply Current 0.45mA
Supply Voltage Range 3V to 5.5V
Temperature Sensing Range 0°C to +125°C
Termination Type Surface Mount Device

Alternative Descriptions

Precision SMBus-Compatible Rem | Analog Devices
Temp Sensor, Remote, Smbus, 8Umax | Newark Electronics

Frequently Asked Questions

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Is the MAX6648MUA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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