Datasheet

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General Description

The MAX9000 family features the combination of a high-

speed operational amplifier, a 185ns comparator, and a

precision 1.230V reference. These devices operate from a

single +2.5V to +5.5V supply and draw less than 500µA of

quiescent current. The MAX9001/MAX9004 feature a shut-

down mode that reduces supply current to 2µA and puts

the outputs into a high-impedance state, making them

ideal for portable and battery-powered applications.

The amplifiers in the MAX9000/MAX9001/MAX9002 are

unity-gain stable with a 1.25MHz gain-bandwidth product,

while the amplifiers in the MAX9003/MAX9004/MAX9005

are stable for closed-loop gains of +10V/V or greater with

an 8MHz gain-bandwidth product. The input common-

mode voltage extends from 150mV below the negative

supply to within 1.2V of the positive supply for the amplifi-

er, and to within 1.1V for the comparator. The amplifier and

comparator outputs can swing Rail-to-Rail

and deliver up

to ±2.5mA and ±4.0mA, respectively, to an external load

while maintaining excellent DC accuracy. The unique

design of the comparator output stage substantially

reduces switching current during output transitions, virtually

eliminating power-supply glitches.

The comparator’s ±2mV of built-in hysteresis provides

noise immunity and prevents oscillations even with a

slow-moving input signal. The MAX9000/MAX9001/

MAX9003/MAX9004 have an internal 1.230V ±1% preci-

sion reference with a low 8ppm/°C temperature coeffi-

cient that can sink or source up to 1mA. The amplifier and

reference are stable with capacitive loads up to 250pF

and 100nF, respectively. The comparator’s inverting input

is internally connected to the reference output in the

MAX9000/MAX9003.

________________________Applications

Single-Supply Zero- Photodiode Preamps

Crossing Detector

Smart Card Readers

Instruments, Terminals, Infrared Receivers

and Bar-Code Readers for Remote Controls

Keyless Entry Sensor Signal Detection

Features

♦ Op Amp + Comparator + Reference in

Space-Saving µMAX Package

♦ +2.5V to +5.5V Single-Supply Voltage Range

♦ 340µA Supply Current (MAX9002/MAX9005)

♦ Unity-Gain Stable (GBW = 1.25MHz) and

Decompensated (A

≥ 10V/V, GBW = 8MHz) Options

♦ Op-Amp/Comparator Outputs Swing Rail-to-Rail

♦ Ground-Sensing Inputs for Both Op Amp and

Comparator

♦ Op Amp Stable with Capacitive Loads up to 250pF

♦ Internal ±2mV Comparator Hysteresis

♦ Fast 185ns Propagation-Delay Comparator

♦ No Phase Reversal for Overdriven Inputs

(Both Op Amp and Comparator)

♦ Internal 1.230V Precision Reference (MAX9000/

MAX9001/MAX9003/MAX9004)

±1% Initial Accuracy

Low 8ppm/°C Temperature Drift

Sink or Source up to 1mA

Stable for Capacitive Loads up to 100nF

MAX9000–MAX9005

Low-Power, High-Speed, Single-Supply

Op Amp + Comparator + Reference ICs

________________________________________________________________

Maxim Integrated Products

19-0499; Rev 1; 7/98

PART

MAX9000EUA

MAX9000ESA -40°C to +85°C

-40°C to +85°C

TEMP. RANGE PIN-PACKAGE

8 µMAX

8 SO

Ordering Information

Ordering Information continued at end of data sheet.

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

Pin Configurations and Typical Operating Circuit appear at

end of data sheet.

INTERNAL

PRECISION

REFERENCE

PIN-PACKAGE

MAX9000 Yes 8 SO/µMAX

MAX9001 Yes 10 µMAX, 14 SO

PART

MAX9002 No 8 SO/µMAX

OP-AMP GAIN

STABILITY

(V/V)

MAX9003 Yes 8 SO/µMAX

MAX9004 Yes 10 µMAX, 14 SO

MAX9005 No 8 SO/µMAX

SHUTDOWN

Yes

OP-AMP GAIN

BANDWIDTH

(MHz)

1.25

______________________________________________________________________________Selector Guide

MAX9001EUB

MAX9001ESD -40°C to +85°C

-40°C to +85°C 10 µMAX

14 SO

Summary of content (20 pages)

PAGE 1
9-0499; Rev 1; 7/98 Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs ________________________Applications Single-Supply ZeroCrossing Detector Instruments, Terminals, and Bar-Code Readers Keyless Entry Photodiode Preamps Smart Card Readers Infrared Receivers for Remote Controls Sensor Signal Detection Features ♦ Op Amp + Comparator + Reference in Space-Saving µMAX Package ♦ +2.5V to +5.
PAGE 2
MAX9000–MAX9005 Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs ABSOLUTE MAXIMUM RATINGS Supply Voltage (VDD to VSS) ....................................-0.3V to +6V Voltage Inputs (AIN_, CIN_).............(VSS - 0.3V) to (VDD + 0.3V) Output Short-Circuit Duration (AOUT, COUT, REF) ...Continuous to either VSS or VDD Continuous Power Dissipation (TA = +70°C) 8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............
PAGE 3
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs (VDD = +2.5V to +5.5V, VSS = 0, SHDN = VDD (MAX9001/MAX9004 only), VCM(OP AMP) = 0, VAOUT = VDD / 2, VCM(COMP) = 0 (for MAX9001/MAX9002/MAX9004/MAX9005), COUT = low, IOUT(REF) = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = 5V and TA = +25°C.) PARAMETER SYMBOL CONDITIONS VDD = 2.5V Large-Signal Voltage Gain AVOL VDD = 5.5V MIN TYP VAOUT = 0.05V to 2.45V, RL = 100kΩ 94 125 VAOUT = 0.2V to 2.
PAGE 4
MAX9000–MAX9005 Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs ELECTRICAL CHARACTERISTICS (continued) (VDD = +2.5V to +5.5V, VSS = 0, SHDN = VDD (MAX9001/MAX9004 only), VCM(OP AMP) = 0, VAOUT = VDD / 2, VCM(COMP) = 0 (for MAX9001/MAX9002/MAX9004/MAX9005), COUT = low, IOUT(REF) = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = 5V and TA = +25°C.
PAGE 5
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs SUPPLY CURRENT vs. SUPPLY VOLTAGE 350 MAX9002/MAX9005 300 250 2.5 2.0 1.5 1.0 0.5 0 200 2.5 3.0 3.5 4.0 4.5 5.0 MAX9000 TOC03 2.0 1.5 1.0 0.5 0 2.5 5.5 3.0 3.5 4.0 4.5 5.0 5.5 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) MAX9000/MAX9001/MAX9003/MAX9004 SUPPLY CURRENT vs. TEMPERATURE SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE SHUTDOWN LOGIC THRESHOLD vs.
PAGE 6
____________________________________Typical Operating Characteristics (continued) (VDD = +5V, VSS = 0, VCM (op amp) = 0, SHDN = VDD, COUT = low, RL = ∞, TA = +25°C, unless otherwise noted.) 0 -10 91 90 CMRR (dB) 10 92 MAX9000 TOC11 50 CHANGE IN VOS (µV) 20 CHANGE IN VOS (µV) 100 MAX9000 TOC10 30 OP-AMP COMMON-MODE REJECTION RATIO vs. TEMPERATURE CHANGE IN OP-AMP OFFSET VOLTAGE (VOS) vs. TEMPERATURE MAX9000 TOC12 CHANGE IN OP-AMP OFFSET VOLTAGE (VOS) vs.
PAGE 7
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs (VDD = +5V, VSS = 0, VCM (op amp) = 0, SHDN = VDD, COUT = low, RL = ∞, TA = +25°C, unless otherwise noted.) -36 0 108 20 36 0 0 -36 -72 PHASE PHASE -108 -20 72 GAIN GAIN (dB) 0 PHASE (DEGREES) 36 20 AV = +1000 CL = 270pF 40 -72 -20 -108 -144 -40 1k 10k 100k 1M -180 10M -40 -100 -180 100 1k 10k 100k 1M 100 10M 1k 10k 100k 1M 10M MAX9003/MAX9004/MAX9005 OP-AMP GAIN AND PHASE vs.
PAGE 8
_____________________________Typical Operating Characteristics (continued) (VDD = +5V, VSS = 0, VCM (op amp) = 0, SHDN = VDD, COUT = low, RL = ∞, TA = +25°C, unless otherwise noted.) MAX9000/MAX9001/MAX9002 OP-AMP TOTAL HARMONIC DISTORTION PLUS NOISE vs. VAOUT RL = 1kΩ RL = 10kΩ 0.01 RL = 10kΩ 0.15 0.10 RL = 1kΩ RL = 100kΩ RL = 100kΩ 0.05 0.001 1k 100 10k 100k 100 10 1 0.1 0.01 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.
PAGE 9
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs (VDD = +5V, VSS = 0, VCM (op amp) = 0, SHDN = VDD, COUT = low, RL = ∞, TA = +25°C, unless otherwise noted.) 2.6 TA = +85°C TA = +85°C 400 TA = +25°C 400 TA = +25°C 300 300 200 200 TA = -40°C TA = -40°C 2.3 100 100 2.0 0 0 -40 -20 0 20 40 60 80 100 0 1 2 3 4 5 6 7 8 9 0 10 1 2 3 4 5 6 7 8 9 10 TEMPERATURE (°C) SOURCE CURRENT (mA) SINK CURRENT (mA) COMPARATOR PROPAGATION DELAY vs.
PAGE 10
_____________________________Typical Operating Characteristics (continued) (VDD = +5V, VSS = 0, VCM (op amp) = 0, SHDN = VDD, COUT = low, RL = ∞, TA = +25°C, unless otherwise noted.) VREF OUTPUT VOLTAGE CHANGE vs. SUPPLY VOLTAGE SINKING 1 SOURCING 0 -1 -2 0 +1mA IOUT 2mA/div -1mA VREF 200mV/div -50 -100 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 LOAD CURRENT (mA) SUPPLY VOLTAGE (V) VREF LINE-TRANSIENT RESPONSE VREF 0.1Hz to 10Hz VOLTAGE NOISE 5.0V 4.
PAGE 11
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs (VDD = +5V, VSS = 0, VCM (op amp) = 0, SHDN = VDD, COUT = low, RL = ∞, TA = +25°C, unless otherwise noted.) AV = +1 CL = 270pF VIN 10mV/div AV = +1 NO LOAD VIN 5V/div 4V MAX9003/MAX9004/MAX9005 OP-AMP LARGE-SIGNAL TRANSIENT RESPONSE AV = +10 NO LOAD VIN 0.
PAGE 12
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs MAX9000–MAX9005 _______________Detailed Description 1 AOUT 2 AIN- 3 AIN+ 4 VSS 1 AOUT MAX9000 MAX9003 OP AMP VDD 8 COMP COUT 7 CIN+ 6 REF OP AMP REF 5 MAX9002 MAX9005 VDD 8 Op Amp COUT 7 2 AIN- 3 AIN+ CIN+ 6 4 VSS CIN- 5 2 SHDN COMP VDD 13 4M NORMAL/SHUTDOWN CONTROL 3 AOUT 4 AIN- CIN+ 11 5 AIN+ CIN- 10 6 VSS OP AMP MAX9001 MAX9004 COMP REF The MAX9001–MAX9005 are combinations of a highs
PAGE 13
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs The CMOS output stage achieves true rail-to-rail operation; the outputs swing to within a few millivolts of the supply rails. The comparator’s propagation delay is 185ns and is a function of the overdrive (see Typical Operating Characteristics). TTL/CMOS compatibility is maintained even with a ±4mA output load.
PAGE 14
VIN 50mV/ div VOUT 50mV/ div MAX9000-FIG04 MAX9000-FIG03 MAX9000–MAX9005 Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs VIN 50mV/ div VOUT 50mV/ div VDD = +1 CL = 510pF 2µs/div 2µs/div Figure 3. MAX9000/MAX9001/MAX9002 Op-Amp Small-Signal Transient Response with Capacitive Load (CL = 510pF) and Isolation Resistor (RISO = 91Ω) Figure 4.
PAGE 15
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs Step 4: Check the hysteresis trip points. The following equation represents the upper trip point (VIN(H)): VIN(H) = [(R1 + R2) / R2] (VREF + VIHYST) = 1.238V The lower trip point is 24mV lower than upper trip point. VIN(L) = 1.238V - 0.024V = 1.214V. Comparator Propagation Delay The comparator’s propagation delay is a function of the input overdrive voltage.
PAGE 16
MAX9000–MAX9005 Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs antenna can be long parallel wires spaced about 7.2cm apart, with equal but opposite currents. Radio waves from this antenna are detectable when the receiver is brought within close proximity, but cancel out at greater distances. Infrared Receiver Front End for Remote Controls and Data Links The circuit in Figure 9 uses the MAX9003 as a PIN photodiode preamplifier and discriminator for an infrared receiver.
PAGE 17
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs TOP VIEW AOUT 1 8 VDD AIN- 2 7 COUT 6 CIN+ 5 REF (CIN-) AIN+ 3 VSS 4 MAX9000 MAX9002 MAX9003 MAX9005 SO/µMAX SHDN 1 AOUT 10 VDD 2 MAX9001 MAX9004 N.C. 1 14 N.C. 13 VDD 9 COUT SHDN 2 AOUT 3 AIN- 3 8 CIN+ AIN+ 4 7 CIN- AIN- 4 VSS 5 6 REF AIN+ 5 µMAX 12 COUT MAX9001 MAX9004 11 CIN+ 10 CIN- VSS 6 9 REF N.C. 7 8 N.C. SO ( ) ARE FOR THE MAX9002/MAX9005. Typical Operating Circuit 0.
PAGE 18
Ordering Information (continued) PART TEMP. RANGE PIN-PACKAGE MAX9002EUA -40°C to +85°C 8 µMAX MAX9002ESA -40°C to +85°C 8 SO MAX9003EUA -40°C to +85°C 8 µMAX MAX9003ESA -40°C to +85°C 8 SO MAX9004EUB -40°C to +85°C 10 µMAX MAX9004ESD -40°C to +85°C 14 SO MAX9005EUA -40°C to +85°C 8 µMAX MAX9005ESA -40°C to +85°C 8 SO Chip Information TRANSISTOR COUNT: 283 Package Information 8LUMAXD.
PAGE 19
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs 10LUMAXB.
PAGE 20
Low-Power, High-Speed, Single-Supply Op Amp + Comparator + Reference ICs SOICN.EPS MAX9000–MAX9005 Package Information (continued) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.