Datasheet

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General Description

The MAX6610/MAX6611 are precise, low-power analog

temperature sensors combined with a precision voltage

reference. They are ideal for applications involving ana-

log-to-digital converters (ADCs), where the MAX6610/

MAX6611 provide the reference voltage for the ADC

and develop a temperature output voltage that is

scaled to provide convenient ADC output codes. An 8-

bit ADC’s LSB is equal to 1°C, while a 10-bit ADC’s LSB

corresponds to 0.25°C.

The MAX6610/MAX6611 are available in two versions.

The MAX6611 operates from a 4.5V to 5.5V power sup-

ply and has a 4.096V reference output. The MAX6610

operates from 3.0V to 5.5V and has a 2.560V reference

output. Power-supply current is less than 150µA (typ).

Both the MAX6610/MAX6611 are available in a 6-pin

SOT23 package and operate from -40°C to +125°C.

Applications

System Temperature Monitoring

Temperature Compensation

HVAC

Home Appliances

Features

♦ ±1°C Accuracy

♦ Low TC Reference (±10ppm, typ)

♦ Temperature Output Scaled for ADCs

♦ Integrated Reference Voltage Scaled for

Convenient ADC Bit Weights

♦ No Calibration Required

♦ Low Supply Current

♦ Tiny 6-Pin SOT23 Package

♦ Low-Current Shutdown Mode

MAX6610/MAX6611

Precision, Low-Power, 6-Pin SOT23

Temperature Sensors and Voltage References

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

µC

REF IN

ADC IN

REF

TEMP

GND

0.1µF

1nF

MAX6610

MAX6611

1nF

SHDN

Typical Application Circuit

19-2457; Rev 2; 11/03

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP

RANGE

PIN-

PACKAGE

REF

(V)

TOP

MARK

MAX6610AUT-T -40°C to +125°C 6 SOT23-6 2.560 ABDO

MAX6611AUT-T -40°C to +125°C 6 SOT23-6 4.096 ABOP

Pin Configuration

GND

TEMP

16GND

5 REF

MAX6610

MAX6611

SOT23

TOP VIEW

34SHDN

Summary of content (6 pages)

PAGE 1
9-2457; Rev 2; 11/03 Precision, Low-Power, 6-Pin SOT23 Temperature Sensors and Voltage References The MAX6610/MAX6611 are available in two versions. The MAX6611 operates from a 4.5V to 5.5V power supply and has a 4.096V reference output. The MAX6610 operates from 3.0V to 5.5V and has a 2.560V reference output. Power-supply current is less than 150µA (typ). Both the MAX6610/MAX6611 are available in a 6-pin SOT23 package and operate from -40°C to +125°C.
PAGE 2
MAX6610/MAX6611 Precision, Low-Power, 6-Pin SOT23 Temperature Sensors and Voltage References ABSOLUTE MAXIMUM RATINGS Operating Temperature Range (TMIN, TMAX) ....-40°C to +125°C ESD Protection (all pins, Human Body Model) ..................2000V Storage Temperature Range ............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) ................................+300°C Voltages Referenced to GND VCC .......
PAGE 3
Precision, Low-Power, 6-Pin SOT23 Temperature Sensors and Voltage References (VCC = 3.0 to 5.5V (MAX6610), VCC = 4.5V to 5.5V (MAX6611), TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 5.0V (MAX6611) and VCC = 3.3V (MAX6610), TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS f = 0.1Hz to 10Hz 100 µVP-P f = 10Hz to 10kHz 100 µVP-P Turn-On Settling Time (VCC to REF) VCC = 0 to 5V step, CLOAD = 50pF, VREF = 0.
PAGE 4
MAX6610/MAX6611 Precision, Low-Power, 6-Pin SOT23 Temperature Sensors and Voltage References Pin Description PIN NAME 1 VCC 2 GND 3 SHDN 4 TEMP 5 6 REF GND FUNCTION Supply Voltage Input. Bypass to GND with a 0.1µF capacitor. Ground Logic Level Shutdown Input (Active Low). Driving SHDN with a logic low turns off internal circuitry to reduce supply current to 1µA (max). Temperature Output Pin. Voltage at TEMP varies linearly with temperature. Reference Voltage Output Must be connected to pin 2.
PAGE 5
Precision, Low-Power, 6-Pin SOT23 Temperature Sensors and Voltage References Temperature sensor ICs, like the MAX6610/MAX6611 that sense their own die temperatures, must be mounted on, or close to, the object whose temperature they are intended to measure. Because there is a good thermal path between the package’s metal leads and the IC die, the MAX6610/MAX6611 can accurately measure the temperature of the circuit board to which it is soldered.
PAGE 6
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 6LSOT.EPS MAX6610/MAX6611 Precision, Low-Power, 6-Pin SOT23 Temperature Sensors and Voltage References PACKAGE OUTLINE, SOT-23, 6L 21-0058 F 1 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.