Rainbow Electronics MAX970 User Manual

_______________General Description

The MAX965–MAX970 single/dual/quad micropower
comparators feature Rail-to-Rail®inputs and outputs, and
fully specified single-supply operation down to +1.6V.
These devices draw less than 5µA per comparator and
have open-drain outputs that can be pulled beyond V

CC

to 6V (max) above ground. In addition, their rail-to-rail
input common-mode voltage range makes these com­parators suitable for ultra-low-voltage operation.

A +1.6V to +5.5V single-supply operating voltage range
makes the MAX965 family of comparators ideal for 2-cell
battery-powered applications. The MAX965/MAX967/
MAX968/MAX969 offer programmable hysteresis and
an internal 1.235V ±1.5% reference. All devices are
available in either space-saving 8-pin µMAX or 16-pin
QSOP packages.

________________________Applications

2-Cell Battery-Powered/Portable Systems
Window Comparators
Threshold Detectors/Discriminators
Mobile Communications
Voltage-Level Translation
Ground/Supply-Sensing Applications

____________________________Features

♦ Ultra-Low Single-Supply Operation down to +1.6V
♦ Rail-to-Rail Common-Mode Input Voltage Range
♦ 3µA Quiescent Supply Current per Comparator
♦ Open-Drain Outputs Swing Beyond V

CC

♦ 1.235V ±1.5% Precision Internal Reference

(MAX965/967/968/969)

♦ 10µs Propagation Delay (50mV overdrive)
♦ Available in Space-Saving Packages:

8-Pin µMAX (MAX965–MAX968)
16-Pin QSOP (MAX969/MAX970)

MAX965–MAX970

Single/Dual/Quad, Micropower,

Ultra-Low-V oltage, Rail-to-Rail I/O Comparators

________________________________________________________________

Maxim Integrated Products

1

V

CC

V

OUT

7

OUT

GND

1.235V

REF6

HYST

1

5

IN-4

IN+3

8

V

CC

V

IN

R

PULL-UP

MAX965

__________Typical Operating Circuit

19-1226; Rev 0; 4/97

PART

MAX965ESA

MAX965EUA
MAX966ESA

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

TEMP. RANGE PIN-PACKAGE

8 SO
8 µMAX
8 SO

______________Ordering Information

Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.

For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone]

MAX966EUA -40°C to +85°C 8 µMAX
MAX967ESA

-40°C to +85°C 8 SO

MAX967EUA -40°C to +85°C 8 µMAX

PART

INTERNAL

REFERENCE

PROGRAMMABLE

HYSTERESIS

MAX965

Yes Yes

MAX966

No No

MAX967

Yes Yes

MAX968

Yes Yes

MAX969

Yes Yes

MAX970

No No

COMPARATORS

PER

PACKAGE

1

2

2

2

4

4

_____________________Selector Guide

Ordering Information continued on last page.

Pin Configurations appear at end of data sheet.

MAX965–MAX970

Single/Dual/Quad, Micropower,
Ultra-Low-V oltage, Rail-to-Rail I/O Comparators

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +1.6V to +5.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= 3V and TA= +25°C.)

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.

Supply Voltage (VCC) ............................................................+6V

Voltages

IN_-, IN_+, REF, HYST ..........................-0.3V to (V

CC

+ 0.3V)

OUT_ ...............................................................-0.3V to +6.0V

Duration of OUT_ Short Circuit to GND or V

CC

..........Continuous

Continuous Power Dissipation

8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW

8-Pin µMAX (derate 4.10mW/°C above +70°C)..........330mW

14-Pin SO (derate 8.33mW/°C above +70°C).............667mW

16-Pin SO (derate 8.70mW/°C above +70°C).............696mW

16-Pin QSOP (derate 5.70mW/°C above +70°C)........457mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range.............................-65°C to +150°C

Lead Temperature (soldering, 10sec).............................+300°C

6.0

10.00°C to +85°C

µMAX
package

QSOP package

-40°C to +85°C

Input Offset Voltage V

OS

-40°C to +85°C

0°C to +85°C

QSOP package

SO package 3.0

Common-mode
range = -0.25V
to 1.3V,
VCC> 1.8V

mV

V

-0.25 V

CC

- 0.25

TA= -40°C to +85°C

SO/QSOP packages, TA= -40°C to +85°C

Full common-mode range, TA= +25°C

Common-mode range = -0.25V to (VCC- 0.25V)

All packages, TA= 0°C to +85°C

VCCstepped 0V to 5V

MAX970

MAX966
MAX967/MAX968

TA= +25°C

MAX969

1.7V ≤ VCC≤ 5.5V

CONDITIONS

7.0C

IN

Input Capacitance pF

0.2I

OS

Input Offset Current

0.001 ±50

nA

0.001 ±5

I

B

Input Bias Current

4.0

-0.25 V

CC

V

CMR

Common-Mode Voltage Range

V

0.1 1.0

PSRRPower-Supply Rejection Ratio

1.7 5.5V

CC

Supply Voltage Range V

1.6 5.5

mV/V

20

Power-Up Time
(VCCto output valid)

11 18

µA

7.0 12

I

CC

Supply Current

6.0 10
10 16
14 22

UNITSMIN TYP MAXSYMBOLPARAMETER

4.0

15.0

10.0

Full common­mode range

7.0

µMAX package, TA= -40°C to +85°C 1.8 5.5

MAX965

Comparator Minimum
Operating Voltage

V1.0

µs

pA

HYST = REF mV±1V

HYST

Input Hysteresis

2 _______________________________________________________________________________________

COMPARATOR

POWER SUPPLIES

SO package

µMAX
package

V

MAX965–MAX970

Single/Dual/Quad, Micropower,

Ultra-Low-V oltage, Rail-to-Rail I/O Comparators

_______________________________________________________________________________________

3

3

4

-60

MAX965 SUPPLY CURRENT

vs. TEMPERATURE

MAX965-TOC1b

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

5

7
6

8

9

10

11

12

13

-40 -20 0 20 40 60 80 100

V

IN+

> V

IN-

VCC = 5.0V

VCC = 2.0V

VCC = 3.0V

4.0

-60

MAX966 SUPPLY CURRENT

vs. TEMPERATURE

MAX965-TOC2b

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

4.5

5.5

5.0

6.0

6.5

7.0

7.5

8.0

8.5

9.0

-40 -20 0 20 40 60 80 100

V

IN+

> V

IN-

VCC = 5.0V

VCC = 2.0V

VCC = 3.0V

5

-60

MAX967/MAX968 SUPPLY CURRENT

vs. TEMPERATURE

MAX965-TOC3b

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

6

8
7

9

10

11

12

13

14

15

-40 -20 0 20 40 60 80 100

V

IN+

> V

IN-

VCC = 5.0V

VCC = 2.0V

VCC = 3.0V

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +1.6V to +5.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= 3V and TA= +25°C.)

f = 100Hz to 100kHz, C

REF

= 0.1µF

HYST = REF

SO package

CONDITIONS

µV

RMS

10Output Voltage Noise

nA200 400I

REF-

Sink Current

µA15 50I

REF+

Source Current

V

1.125 1.235 1.255

V

REF

Reference Voltage

UNITSMIN TYP MAXSYMBOLPARAMETER

1.205 1.235 1.265

__________________________________________Typical Operating Characteristics

(VCC= +3.0V, R

PULL-UP

= 100kΩ, VCM= 0V, TA= +25°C, unless otherwise noted.)

10

CMRRCommon-Mode Rejection Ratio mV/V1.5 4.0

f = 100Hz to 100kHz, C

REF

= 1000pFInput Voltage Noise e

n

µV

RMS

0.2I

OUT

= 100µA, 1.6V < VCC< 2.7V

OUT Output Voltage Low V

OL

V

20

Propagation Delay t

PD-

µs

10

R

PULL-UP

= 1MΩ,

C

LOAD

= 15pF, high to low

10mV overdrive
50mV overdrive

QSOP package

HYST Input Voltage Range V

V

REF -

0.05

V

REF

I

HYST

HYST Input Leakage nA±5
Hysteresis Gain V/V1.0

µMAX package, TA= -40°C to +85°C 1.185 1.235 1.285

µMAX package, TA= 0°C to +85°C 1.205 1.235 1.265

0.4I

OUT

= 500µA, 2.7V < VCC< 5.5V

REFERENCE

MAX965–MAX970

Single/Dual/Quad, Micropower,
Ultra-Low-V oltage, Rail-to-Rail I/O Comparators

4 _______________________________________________________________________________________

0

0

MAX965 SUPPLY CURRENT

vs. SUPPLY VOLTAGE

(INCLUDES REFERENCE CURRENT)

MAX965/70-TOC7a

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

2

4

6

8

10

12

14

1 2 3 4 5 6

V

IN+

> V

IN-

-60 -20 0-40 20 40 60 80 100

COMPARATOR OUTPUT SHORT-CIRCUIT

SINK CURRENT vs. TEMPERATURE

MAX965/70 -TOC8a

TEMPERATURE (°C)

OUTPUT SHORT-CIRCUIT SINK CURRENT (mA)

VCC = 2V

VCC = 3V

V

IN+

< V

IN-

VCC = 5V

0

2

4

6

8

10

12

14

0

1.5

1.0

0.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

0 42 6 8 10 12

COMPARATOR OUTPUT

LOW VOLTAGE vs. SINK CURRENT

MAX965/70-09a

SINK CURRENT (mA)

OUTPUT LOW VOLTAGE (V)

V

IN+

= < V

IN-

V

CC

= 5V

V

CC

= 3V

V

CC

= 2V

6

-60

PROPAGATION DELAY (t

PD-

)

vs. TEMPERATURE

MAX965-TOC10a

TEMPERATURE (°C)

DELAY (µs)

7

4

5

9
8

10

11

12

13

14

-40 -20 0 20 40 60 80 100

VOD = 50mV

VCC = 2.0V

VCC = 5.0V

VCC = 3.0V

70

0

0.001 0.01 0.1

PROPAGATION DELAY (t

PD-

)

vs. CAPACITIVE LOAD

10

MAX4108/9-11a

CAPACITIVE LOAD (µF)

DELAY (µs)

30

20

40

50

60

VOD = 50mV

VCC = 5.0V

VCC = 3.0V

VCC = 2.0V

0

0

PROPAGATION DELAY (t

PD-

)

vs. INPUT OVERDRIVE

MAX965-TOC12a

INPUT OVERDRIVE (mV)

DELAY (µs)

10

5

15

20

25

30

20 40 60 80 100 120 140 160

VCC = 5.0V

VCC = 2.0V

VCC = 3.0V

_____________________________Typical Operating Characteristics (continued)

(VCC= +3.0V, R

PULL-UP

= 100kΩ, VCM= 0V, TA= +25°C, unless otherwise noted.)

8

-60

MAX969 SUPPLY CURRENT

vs. TEMPERATURE

MAX965-TOC4b

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

12

10

14

16

18

20

-40 -20 0 20 40 60 80 100

V

IN+

> V

IN-

VCC = 5.0V

VCC = 2.0V

VCC = 3.0V

7

-60

MAX970 SUPPLY CURRENT

vs. TEMPERATURE

MAX965-TOC5b

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

8

10

9

11

12

13

14

15

16

-40 -20 0 20 40 60 80 100

V

IN+

> V

IN-

VCC = 2.0V

VCC = 3.0V

VCC = 5.0V

0

0

SUPPLY CURRENT PER COMPARATOR

vs. SUPPLY VOLTAGE

(EXCLUDES REFERENCE CURRENT)

MAX965-TOC6b

SUPPLY VOLTAGE (V)

SUPPLY CURRENT PER COMPARATOR (µA)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

1 2 3 4 5 6

V

IN+

> V

IN-