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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
V
≥ 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
1
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)
1
1
1
MAX9003 Yes 8 SO/µMAX
MAX9004 Yes 10 µMAX, 14 SO
MAX9005 No 8 SO/µMAX
10
10
10
SHUTDOWN
No
Yes
No
No
Yes
No
OP-AMP GAIN
BANDWIDTH
(MHz)
1.25
1.25
1.25
8
8
8
______________________________________________________________________________Selector Guide
MAX9001EUB
MAX9001ESD -40°C to +85°C
-40°C to +85°C 10 µMAX
14 SO
