Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsLinear IC - Comparator Multi-purpose CMOS, Push pull, Rail-to-rail, TTL SC 70 5

General Description

The MAX9117–MAX9120 nanopower comparators in

space-saving SC70 packages feature Beyond-the-

Rails™ inputs and are guaranteed to operate down to

+1.6V. The MAX9117/MAX9118 feature an on-board

1.252V ±1.75% reference and draw an ultra-low supply

current of only 600nA, while the MAX9119/MAX9120

(without reference) require just 350nA of supply current.

These features make the MAX9117–MAX9120 family of

comparators ideal for all 2-cell battery-monitoring/man-

agement applications.

The unique design of the output stage limits supply-cur-

rent surges while switching, virtually eliminating the sup-

ply glitches typical of many other comparators. This

design also minimizes overall power consumption under

dynamic conditions. The MAX9117/MAX9119 have a

push-pull output stage that sinks and sources current.

Large internal-output drivers allow rail-to-rail output

swing with loads up to 5mA. The MAX9118/MAX9120

have an open-drain output stage that makes them suit-

able for mixed-voltage system design. All devices are

available in the ultra-small 5-pin SC70 package.

Applications

2-Cell Battery Monitoring/Management

Ultra-Low-Power Systems

Mobile Communications

Notebooks and PDAs

Threshold Detectors/Discriminators

Sensing at Ground or Supply Line

Telemetry and Remote Systems

Medical Instruments

Features

♦ Space-Saving SC70 Package (Half the Size of

SOT23)

♦ Ultra-Low Supply Current

350nA Per Comparator (MAX9119/MAX9120)

600nA Per Comparator with Reference

(MAX9117/MAX9118)

♦ Guaranteed to Operate Down to +1.6V

♦ Internal 1.252V ±1.75% Reference

(MAX9117/MAX9118)

♦ Input Voltage Range Extends 200mV

Beyond-the-Rails

♦ CMOS Push-Pull Output with ±5mA Drive

Capability (MAX9117/MAX9119)

♦ Open-Drain Output Versions Available

(MAX9118/MAX9120)

♦ Crowbar-Current-Free Switching

♦ Internal Hysteresis for Clean Switching

♦ No Phase Reversal for Overdriven Inputs

MAX9117–MAX9120

SC70, 1.6V, Nanopower, Beyond-the-Rails

Comparators With/Without Reference

________________________________________________________________ Maxim Integrated Products 1

IN- (REF)

IN+

OUT

MAX9117

MAX9118

MAX9119

MAX9120

SC70

TOP VIEW

( ) ARE FOR MAX9117/MAX9118.

IN- (REF)

N.C.

MAX9117

MAX9120

IN+

OUT

Typical Application Circuit appears at end of data sheet.

Pin Configurations

Selector Guide

Ordering Information

Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.

19-1862; Rev 4; 1/07

PART

INTERNAL

REFERENCE

OUTPUT

TYPE

SUPPLY

CURRENT

(nA)

MAX9117 Yes Push-Pull 600

MAX9118 Yes Open-Drain 600

350Push-PullNoMAX9119

MAX9120 No Open-Drain 350

PART

PIN-

PACKAGE

TOP

MARK

PKG

CODE

MAX9117EXK-T 5 SC70-5

ABW

X5-1

MAX9117ESA+ 8 SO

—

S8-2

MAX9118EXK-T 5 SC70-5

ABX

X5-1

MAX9119EXK-T 5 SC70-5

ABY

X5-1

MAX9120EXK-T 5 SC70-5

ABZ

X5-1

MAX9120ESA+ 8 SO

—

S8-2

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.

Note: All devices specified for over -40°C to +85°C operating

temperature range.

+Denotes lead-free package.

Summary of content (14 pages)

PAGE 1
9-1862; Rev 4; 1/07 SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference The MAX9117–MAX9120 nanopower comparators in space-saving SC70 packages feature Beyond-theRails™ inputs and are guaranteed to operate down to +1.6V. The MAX9117/MAX9118 feature an on-board 1.252V ±1.75% reference and draw an ultra-low supply current of only 600nA, while the MAX9119/MAX9120 (without reference) require just 350nA of supply current.
PAGE 2
MAX9117–MAX9120 SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC to VEE)..................................................+6V Voltage Inputs (IN+, IN-, REF) .........(VEE - 0.3V) to (VCC + 0.3V) Output Voltage MAX9117/MAX9119 ....................(VEE - 0.3V) to (VCC + 0.3V) MAX9118/MAX9120 ..................................(VEE - 0.3V) to +6V Current Into Input Pins......................................................
PAGE 3
SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference (VCC = +5V, VEE = 0V, VIN+ = VREF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MAX9117 only Low-to-High Propagation Delay (Note 4) tPD+ MIN TYP VCC = 1.6V 15 VCC = 5V 40 VCC = 1.6V, RPULLUP = 100kΩ 16 VCC = 5V, RPULLUP = 100kΩ 45 MAX UNITS µs MAX9118 only Rise Time tRISE MAX9117 only, CL = 15pF 1.6 µs Fall Time tFALL CL = 15pF 0.
PAGE 4
MAX9117–MAX9120 SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference ELECTRICAL CHARACTERISTICS—MAX9119/MAX9120 (without REF) (continued) (VCC = +5V, VEE = 0V, VCM = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 5
SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference MAX9119/MAX9120 SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE 800 750 TA = +25°C 700 650 500 TA = +85°C 450 TA = +25°C 400 350 850 TA = -40°C TA = -40°C 600 MAX9117-20 toc02 TA = +85°C 850 900 SUPPLY CURRENT (nA) 250 2.0 2.5 3.0 3.5 4.0 4.5 5.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -40 -15 10 35 60 85 SUPPLY VOLTAGE (V) TEMPERATURE (°C) MAX9119/MAX9120 SUPPLY CURRENT vs.
PAGE 6
Typical Operating Characteristics (continued) (VCC = +5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.) SHORT-CIRCUIT SINK CURRENT vs. TEMPERATURE TA = +25°C TA = +85°C 0.2 30 25 20 15 VCC = +3V 10 1 2 3 4 5 6 7 8 9 10 25 20 VCC = +3V 15 VCC = +1.8V 0 -40 -15 10 35 60 85 -40 -15 10 35 60 85 SOURCE CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) OFFSET VOLTAGE vs. TEMPERATURE HYSTERESIS VOLTAGE vs.
PAGE 7
SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference MAX9117/MAX9119 PROPAGATION DELAY (tPD+) vs. TEMPERATURE 26 24 50 16 30 VCC = +3V 10 10 -15 10 35 60 20 -40 -15 10 35 60 0 0.01 85 0.1 1 10 CAPACITIVE LOAD (nF) MAX9117/MAX9119 PROPAGATION DELAY (tPD+) vs. CAPACITIVE LOAD PROPAGATION DELAY (tPD-) vs. INPUT OVERDRIVE MAX9117/MAX9119 PROPAGATION DELAY (tPD+) vs. INPUT OVERDRIVE 70 40 30 80 VCC = +3V VCC = +5V 60 tPD+ (µs) tPD- (µs) 100 50 VCC = +1.
PAGE 8
MAX9117–MAX9120 SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference Typical Operating Characteristics (continued) (VCC = +5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.
PAGE 9
SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference VCC VCC IN+ IN+ OUT REF OUT IN- MAX9119 MAX9120 MAX9117 MAX9118 REF 1.252V VEE VEE Pin Description PIN MAX9117/ MAX9118 MAX9119/ MAX9120 NAME FUNCTION SC70 SO SC70 SO 1 6 1 6 OUT 2 4 2 4 VEE 3 3 3 3 IN+ Comparator Noninverting Input 4 2 — REF 1.252V Reference 5 7 5 7 VCC Positive Supply — — 4 2 IN- — 1, 5, 8 — 1, 5, 8 N.C.
PAGE 10
MAX9117–MAX9120 SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference Reference (MAX9117/MAX9118) The internal reference in the MAX9117/MAX9118 has an output voltage of +1.252V with respect to VEE. Its typical temperature coefficient is 100ppm/°C over the full -40°C to +85°C temperature range. The reference is a PNP emitter-follower driven by a 120nA current source (Figure 1).
PAGE 11
SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference R3 VTHR R1 HYSTERESIS INVHB VIN VCC BAND R2 VTHF OUT VEE VREF MAX9117 MAX9119 OUT Figure 2. Threshold Hysteresis Band MAX9117 (VREF = 1.252V) and VCC = +5V, and if we choose IR3 = 1µA, then the two resistor values are 1.2MΩ and 3.8MΩ. Choose a 1.2MΩ standard value for R3. 2) Choose the hysteresis band required (VHB). For this example, choose 50mV.
PAGE 12
MAX9117–MAX9120 SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference Typical Application Circuit Board Layout and Bypassing Power-supply bypass capacitors are not typically needed, but use 100nF bypass capacitors close to the device’s supply pins when supply impedance is high, supply leads are long, or excessive noise is expected on the supply lines. Minimize signal trace lengths to reduce stray capacitance. A ground plane and surface-mount components are recommended.
PAGE 13
SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference SC70, 5L.EPS PACKAGE OUTLINE, 5L SC70 21-0076 E 1 1 ______________________________________________________________________________________ 13 MAX9117–MAX9120 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.
PAGE 14
Package Information (continued) (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.) DIM A A1 B C e E H L N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS MAX9117–MAX9120 SC70, 1.