General Description

The MAX9039–MAX9043 and MAX9050–MAX9053 fea-

ture combinations of low-power comparators and preci-

sion voltage references. Their operating voltage range

makes them ideal for both 3V and 5V systems. The

MAX9039/MAX9040/MAX9041/MAX9050/MAX9051

have a single comparator and reference consuming

only 40µA of supply current. The MAX9042/MAX9043/

MAX9052/MAX9053 have dual comparators and one

reference, and consume only 55µA of supply current.

Low-voltage operation and low supply current make

these devices ideal for battery-operated systems.

The comparators feature rail-to-rail inputs and outputs,

with a common-mode input voltage range that extends

250mV beyond the supply rails. Input bias current is

typically 1.0pA, and input offset voltage is typically

0.5mV. Internal hysteresis ensures clean output switch-

ing, even with slow-moving input signals. The output

stage features a unique design that limits supply cur-

rent surges while switching, virtually eliminating supply

glitches typical of many other comparators. This design

also minimizes overall power consumption under

dynamic conditions. The comparator outputs have rail-

to-rail, push-pull output stages that sink and source up

to 8mA. The propagation delay is 400ns, even with the

low-operating supply current.

The reference output voltage is set to 1.23V in the

MAX9039, to 2.048V in the MAX9040–MAX9043, and to

2.500V in the MAX9050–MAX9053. The MAX9040–

MAX9043 and the MAX9050–MAX9053 are offered in

two grades: an A grade with 0.4% initial accuracy and

6ppm/°C tempco, and a B grade with 1% initial accura-

cy and 100ppm/°C tempco. The voltage references

feature a proprietary curvature-correction circuit and

laser-trimmed thin-film resistors. These series-mode ref-

erences can sink or source up to 500µA of load current.

Applications

Features

♦ Comparator + Precision Reference in UCSP/SOT23

♦ 2.5V to 5.5V Single-Supply Operation

(MAX9039–MAX9043)

♦ Low Supply Current (MAX9039/MAX9040/

MAX9041/MAX9050/MAX9051)

40µA Quiescent

50µA with 100kHz Switching

♦ 400ns Propagation Delay

♦ Rail-to-Rail Inputs

♦ Rail-to-Rail Output Stage Sinks and Sources 8mA

♦ Internal ±3mV Hysteresis

♦ Voltage Reference Offers

±0.4% (max) Initial Accuracy (A grade)

6ppm/°C (typ) Temperature Coefficient (A grade)

Stable for 0 to 4.7nF Capacitive Loads

Micropower, Single-Supply, UCSP/SOT23

Comparator + Precision Reference ICs

________________________________________________________________ Maxim Integrated Products

1

19-1569; Rev 6; 3/09

Ordering Information

UCSP is a trademark of Maxim Integrated Products, Inc.

*UCSP reliability is integrally linked to the user’s assembly

methods, circuit board material, and environment. Refer to the

UCSP Reliability section of this data sheet for more information.

Typical Operating Circuit and Functional Diagrams appear

at end of data sheet.

Ordering Information continued at end of data sheet.

Selector Guide appears at end of data sheet.

TOP VIEW (BUMPS ON BOTTOM)

TOP VIEW

REF

IN+

15

OUT

MAX9040

MAX9050

SOT23

2

34

IN-

REF

IN+

MAX9039

B3

OUT

B1

A3

A2

A1

B2

UCSP

Pin Configurations

Pin Configurations continued at end of data sheet.

PIN-

PACKAGE

6 UCSP

5 SOT23

6 SOT23

6 SOT23

8 SO

8 SO

5 SOT23

-40°C to +85°C

MAX9040AEUK-T

ADNW

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

TEMP RANGE

PART

MAX9039BEBT-T*

MAX9040BEUK-T

MAX9041AEUT-T

MAX9041BEUT-T

MAX9041AESA

MAX9041BESA

TOP

MARK

AAZ

ADNX

AAHF

AAHH

—

—

Precision Battery

Management

Window Comparators

IR Receivers

Level Translators

Digital Line Receivers

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim's website at www.maxim-ic.com.