MAXIM MAX44269 Technical data

EVALUATION KIT AVAILABLE

19-5986; Rev 1; 12/11

MAX44269

1.3mm x 1.3mm, Low-Power Dual Comparator

General Description

The MAX44269 is an ultra-small and low-power dual comparator ideal for battery-powered applications such as cell phones, notebooks, and portable medical devices that have extremely aggressive board space and power constraints. The comparator is available in a miniature

1.3mm x 1.3mm, 9-bump WLP package, making it the industry’s smallest dual comparator.

The IC can be powered from supply rails as low as 1.8V and up to 5.5V. It requires just 0.5µA of typical supply current per comparator. It has a rail-to-rail input structure and a unique output stage that limits supply current surges while switching. This design also minimizes overall power consumption under dynamic conditions. The IC has open-drain outputs, making it suitable for mixed voltage systems. The IC also features internal filtering to provide high RF immunity. It operates over a -40°C to +85°C temperature.

Applications

Smartphones Notebooks Two-Cell Battery-Powered Devices Battery-Operated Sensors Ultra-Low-Power Systems Portable Medical Mobile Accessories

Features

S Ultra-Low Power Consumption

 0.5µA per Comparator

S Ultra-Small 1.3mm x 1.3mm WLP Package

S Guaranteed Operation Down to VCC = 1.8V

S Input Common-Mode Voltage Range Extends

200mV Beyond-the-Rails

S 6V Tolerant Inputs Independent of Supply

S Open-Drain Outputs

S Internal Filters Enhance RF Immunity

S Crowbar-Current-Free Switching

S Internal Hysteresis for Clean Switching

S No Output Phase Reversal for Overdriven Inputs

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part, refer to www.maxim-ic.com/MAX44269.related.

Typical Application Circuit

V

CC

V

CC

V

CC

V

REF

V

CC

REMOTE KEY

CONNECTOR

ACCESSORY ID

�� Maxim Integrated Products 1

MAX44269

OUT1

OUT2

GND

V

PULL

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.

MAX44269

1.3mm x 1.3mm, Low-Power Dual Comparator

ABSOLUTE MAXIMUM RATINGS

VCC to GND ............................................................. -0.3V to +6V

INA+, INA-, INB+, INB- to GND .............................. -0.3V to +6V

Continuous Input Current into Any Pin ............................ Q20mA

Maximum Power Dissipation

(derate 11.9mW/NC at TA = +70NC) ............................952mW

Output Voltage to GND (OUT_) ..............................-0.3V to +6V

Output Current (OUT_) .................................................... Q50mA

PACKAGE THERMAL CHARACTERISTICS (Note 1)

WLP

Junction-to-Ambient Thermal Resistance (qJA) ..........84°C/W

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Output Short-Circuit Duration (OUT_) .......................Continuous

Operating Temperature Range .......................... -40NC to +85NC

Storage Temperature Range ............................ -65NC to +150NC

Junction Temperature .....................................................+150NC

Lead Temperature (soldering, 10s) ................................+300NC

Soldering Temperature (reflow) ......................................+260NC

ELECTRICAL CHARACTERISTICS

(VCC = 5V, V otherwise noted.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC CHARACTERISTICS

Input-Referred Hysteresis V

Input Offset Voltage V

Input Bias Current I

Output-Voltage Swing Low V

Input Voltage Range V

Output Short-Circuit Current

Output Leakage Current I

GND

= 0V, V

IN-

= V

IN+

HYS

I

SC

LEAK

= 1.2V, R

OS

B

OL

CM

= 100kI to VCC, TA = -40NC to +85NC. Typical values are at TA = +25NC, unless

PULLUP

(V

- 0.2V) P VCM P (VCC + 0.2V) (Note 3) 4 6 mV

GND

V

- 0.2V P VCM P

GND

VCC + 0.2V (Note 4)

TA = +25NC 0.15 TA = -40NC to +85NC 0.2

VCC = 1.8V, I

= 1mA

SINK

VCC = 5V, I

Inferred from VOS test

Sinking, V

VCC = 5.5V, V

SINK

OUT

= 6mA

= V

CC

= 5.5V 0.2 nA

OUT

TA = +25NC 0.15 5

-40NC P TA P +85NC 10

TA = +25NC 105 200

-40NC P TA P +85NC 300 TA = +25NC 285 350

-40NC P TA P +85NC 450

V

GND

- 0.2V

VCC = 1.8V 3 VCC = 5V 30

V

CC

+ 0.2V

mV

nA

mV

V

mA

�� Maxim Integrated Products 2

MAX44269

1.3mm x 1.3mm, Low-Power Dual Comparator

ELECTRICAL CHARACTERISTICS (continued)

(VCC = 5V, V otherwise noted.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

AC CHARACTERISTICS

Propagation Delay High to Low (Note 5)

Propagation Delay Low to High (Note 5)

Fall Time t

POWER SUPPLY

Supply Voltage Range V

Power-Supply Rejection Ratio

Supply Current per Comparator

Power-Up Time t

Note 2: All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design. Note 3: Hysteresis is the input voltage difference between the two switching points. Note 4: VOS is the average of the positive and negative trip points minus V Note 5: Overdrive is defined as the voltage above or below the switching points.

GND

= 0V, V

IN-

= V

= 1.2V, R

IN+

Input overdrive = Q100mV, VCC = 5V 5

t

PHL

t

PLH

F

CC

PSRR VCC = 1.8V to 5.5V 60 80 dB

I

CC

ON

Input overdrive = Q100mV, VCC = 1.8V 7 Input overdrive = Q20mV, VCC = 5V 8 Input overdrive = Q20mV, VCC = 1.8V 12 Input overdrive = Q100mV, VCC = 5V 34 Input overdrive = Q100mV, VCC = 1.8V 12 Input overdrive = Q20mV, VCC = 5V 35 Input overdrive = Q20mV, VCC = 1.8V 12 C

Guaranteed from PSRR tests 1.8 5.5 V

VCC = 1.8V, TA = +25NC 0.4 0.75

VCC = 5V, -40NC P TA P +85NC 1

= 100kI to VCC, TA = -40NC to +85NC. Typical values are at TA = +25NC, unless

PULLUP

= 15pF 0.2 Fs

LOAD

1 ms

.

REF

Fs

FAVCC = 5V, TA = +25NC 0.5 0.85

�� Maxim Integrated Products 3

MAX44269

06

1.3mm x 1.3mm, Low-Power Dual Comparator

Typical Operating Characteristics

(VCC = 5V, V

GND

= 0V, V

IN-

= V

= 1.2V, R

IN+

= 100kΩ to VCC, TA = -40NC to +85NC. Typical values are at TA = +25NC, unless

PULLUP

otherwise noted. All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design.)

SUPPLY CURRENT vs. TRANSITION

SUPPLY CURRENT vs. SUPPLY VOLTAGE

1.2

1.0

0.8

0.6

0.4

SUPPLY CURRENT (µA)

0.2

0

1.5 6.0

V

= HIGH

OUT

TA = +85°C

TA = +25°C

SUPPLY VOLTAGE (V)

TA = -40°C

MAX44269 toc01

5.55.04.54.03.53.02.52.0

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

0

-0.05

-0.10

-0.15

-0.20

-0.25

-0.30

VDD = 2.7V

-0.35

INPUT OFFSET VOLTAGE (mV)

-0.40

-0.45

-0.50

-40 100

VDD = 5V

VDD = 1.8V

TEMPERATURE (°C)

MAX44269 toc04

806020 400-20

OUTPUT-VOLTAGE LOW

vs. PULLUP RESISTANCE

10,000

)

EE

- V

1000

OL

100

10

OUTPUT VOLTAGE LOW (V

1

100 100k 54321

PULLUP RESISTANCE (I)

10k1k

MAX44269 toc07

SUPPLY CURRENT vs. SUPPLY VOLTAGE

1.4

V

= LOW

OUT

TA = +85°C

TA = +25°C

SUPPLY VOLTAGE (V)

TA = -40°C

1.2

1.0

0.8

0.6

SUPPLY CURRENT (µA)

0.4

0.2

0

INPUT BIAS CURRENT

vs. TEMPERATURE

0.20

0.18

0.16

0.14

0.12

0.10

VDD = 2.7V

0.08

0.06

INPUT BIAS CURRENT (nA)

0.04

0.02

0

-40 100

VDD = 5V

VDD = 1.8V

TEMPERATURE (°C)

SHORT-CIRCUIT CURRENT

vs. SUPPLY VOLTAGE

40

V

35

30

25

20

15

10

SHORT-CIRCUIT CURRENT (mA)

= LOW

OUT

5

0

TA = -40°C

TA = +25°C

TA = +85°C

SUPPLY VOLTAGE (V)

5.55.04.54.03.53.02.52.01.5 6.0

806020 400-20

14

12

MAX44269 toc02

10

8

6

SUPPLY CURRENT (µA)

4

2

0

1 10k

500

450

MAX44269 toc05

400

350

300

250

200

150

INPUT BIAS CURRENT (nA)

100

50

0

-1 6

45

40

MAX44269 toc08

35

30

25

20

OCCURRENCE (%)

15

10

5

0

FREQUENCY (V

OVERDRIVE

VCC = 1.8V

INPUT FREQUENCY (Hz)

INPUT BIAS CURRENT

vs. COMMON-MODE VOLTAGE

VDD = 2.7V

VDD = 5V

VDD = 0V

INPUT COMMON-MODE VOLTAGE (V)

INPUT OFFSET VOLTAGE HISTOGRAM

-2 INPUT OFFSET VOLTAGE (mV)

= 20mV)

VCC = 5V

VCC = 2.7V

1k10010

VDD = 1.8V

MAX44269 toc03

MAX44269 toc06

542 310

MAX44269 toc09

2.52.01.0 1.5-1.0 -0.5 0 0.5-1.5

�� Maxim Integrated Products 4

MAX44269

1.3mm x 1.3mm, Low-Power Dual Comparator

Typical Operating Characteristics (continued)

(VCC = 5V, V

GND

= 0V, V

IN-

= V

= 1.2V, R

IN+

= 100kΩ to VCC, TA = -40NC to +85NC. Typical values are at TA = +25NC, unless

PULLUP

otherwise noted. All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design.)

LEAKAGE CURRENT vs. TEMPERATURE

0.50

0.45

0.40

0.35

0.30

0.25

VCC = 5V

0.20

0.15

0.10

OUTPUT LEAKAGE CURRENT (nA)

0.05

0

-50 110

VCC = 2.7V

TEMPERATURE (°C)

PROPAGATION DELAY vs. TEMPERATURE

(V

OVERDRIVE

45

40

35

30

25

20

15

PROPAGATION DELAY (µs)

10

5

0

-40 100

= 100mV, VDD = 5V)

t

PLH

t

PHL

TEMPERATURE (°C)

INPUT REFERRED HYSTERESIS

vs. TEMPERATURE

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

INPUT REFERRED HYSTERESIS (mV)

0.5

0

-40 100 TEMPERATURE (°C)

VCC = 1.8V

907030 50-10 10-30

806020 400-20

120

100

MAX44269 toc10

80

60

40

PROPAGATION DELAY (µs)

20

0

60

50

MAX44269 toc13

40

30

20

PROPAGATION DELAY (µs)

10

0

0 1000

MAX44269 toc16

V

IN+

20mV/div

V

OUT

1V/div

PROPAGATION DELAY

vs. PULLUP RESISTANCE

t

PLH

t

PHL

100k

PULLUP RESISTANCE (I)

1M10k1k

PROPAGATION DELAY

vs. INPUT OVERDRIVE (t

TA = -40°C

INPUT OVERDRIVE VOLTAGE (mV)

PLH

TA = +25°C

TA = +85°C

800600400200

)

SMALL-SIGNAL TRANSIENT RESPONSE

= 1.8V)

(V

CC

20µs/div

MAX44269 toc17

MAX44269 toc11

PROPAGATION DELAY (µs)

10M

MAX44269 toc14

PROPAGATION DELAY (µs)

20mV/div

100

90

80

70

60

50

40

30

20

10

12

10

V

OUT

2V/div

0

8

6

4

2

0

IN+

PROPAGATION DELAY vs. CAPACITIVE LOAD

t

PLH

CAPACITIVE LOAD (pF)

PROPAGATION DELAY

vs. INPUT OVERDRIVE (t

TA = -40°C

TA = +85°C

0 1000

INPUT OVERDRIVE VOLTAGE (mV)

SMALL-SIGNAL TRANSIENT RESPONSE

= 5V)

(V

CC

20µs/div

t

PHL

8006004002000 1000

PHL

TA = +25°C

800600400200

MAX44269 toc12

)

MAX44269 toc15

MAX44269 toc18

�� Maxim Integrated Products 5