MAX6648, MAX6692 Precision SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms

Description

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.

Key Features

Applications/Uses

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
Programmable Conversion Rate
SMBus-Compatible Interface
SMBus Timeout
Programmable Under/Overtemperature Alarm Thresholds
Compatible with 90nm, 65nm, and 45nm Process Technology

	Desktop Computers
	Multichip Modules
	Notebook Computers
	Servers
	Test and Measurement Equipment
	Thin Clients
	Workstations

Key Specifications: Temperature Sensors

Part Number

Sensor Type

Alarm Output

Functions

Interface

Remote Channels

Accuracy (±°C)

Parasite Power

Temperature Threshold

Temperature Resolution (Bits)

Price^**

MAX6648

Remote

Alert
Overt

•	Dual Temperature Alarms

•	Remote & Local Sensor

2-Wire/SMBus

Single

0.8

Programmable

$1.50 @ 1k

MAX6692

$1.50 @ 1k

See All Temperature Sensors (97)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Reliability Reports


		Show FIT data for:

		Reliability Report: MAX6692xxxA.pdf

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Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-18 of 18

MAX6648

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX6648YMUA+T

-40°C to +85°C

See data sheet

MAX6648MUA+T

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6648MUA+

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6648YMUA+

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6648MUA-T

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX6648MUA

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX6692

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX6692YMSA+

SOIC;8 pin;
Dwg: 21-0041 (PDF)
Use pkgcode/variation: S8+4*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6692MSA+T

SOIC;8 pin;
Dwg: 21-0041 (PDF)
Use pkgcode/variation: S8+4*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6692YMSA+T

-40°C to +85°C

See data sheet

MAX6692MSA+

SOIC;8 pin;
Dwg: 21-0041 (PDF)
Use pkgcode/variation: S8+4*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6692MSA

SOIC;8 pin;
Dwg: 21-0041 (PDF)
Use pkgcode/variation: S8-4*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX6692MSA-T

SOIC;8 pin;
Dwg: 21-0041 (PDF)
Use pkgcode/variation: S8-4*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX6692MUA+T

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8CN+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6692MUA+

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8CN+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6692MUA-T

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8CN-1*

-40°C to +85°C

See data sheet

MAX6692MUA

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8CN-1*

-40°C to +85°C

See data sheet

MAX6692YMUA+

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8CN+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6692YMUA+T

uMAX;8 pin;
Dwg: 21-0036 (PDF)
Use pkgcode/variation: U8CN+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

Related Products

MAX6657, MAX6658, MAX6659 ±1°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms