19-1569; Rev 2; 4/00
Micropower, Single-Supply,
SOT23 Comparator + Precision Reference ICs
General Description
Features
The MAX9040–MAX9043 and MAX9050–MAX9053 fea-
ture combinations of low-power comparators and preci-
sion voltage references. Their operating voltage range
makes them ideal for both +3V and +5V systems. The
MAX9040/MAX9041/MAX9050/MAX9051 have a single
comparator and reference consuming only 40µA of
supply current. The MAX9042/MAX9043/MAX9052/
MAX9053 have dual comparators and one reference,
and consume only 55µA of supply current. Low-voltage
operation and low supply current make these devices
ideal for battery-operated systems.
ꢀ Comparator + Precision Reference in SOT23
ꢀ +2.5V to +5.5V Single-Supply Operation
(MAX9040–MAX9043)
ꢀ Low Supply Current (MAX9040/MAX9050)
40µA Quiescent
50µA with 100kHz Switching
ꢀ 400ns Propagation Delay
ꢀ Rail-to-Rail Inputs
ꢀ Rail-to-Rail Output Stage Sinks and Sources 8mA
ꢀ Internal 3mV Hysteresis
®
The comparators feature Rail-to-Rail inputs and out-
puts, with a common-mode input voltage range that
extends 250mV beyond the supply rails. Input bias cur-
rent is typically 1.0pA, and input offset voltage is typi-
cally 0.5mV. Internal hysteresis ensures clean output
switching, even with slow-moving input signals. The
output stage features a unique design that limits supply
current surges while switching, virtually eliminating sup-
ply glitches typical of many other comparators. This
design also minimizes overall power consumption
under dynamic conditions. The comparator outputs
have rail-to-rail push-pull output stages that sink and
source up to 8mA. The propagation delay is 400ns,
even with the low operating supply current.
ꢀ Voltage Reference Offers
0.4ꢀ maꢁ Initial Accuracy (A grade)
6ppm/°C typ Temperature Coefficient (A grade)
Stable for 0nF to 4.7nF Capacitive Loads
Ordering Information
PIN-
PACKAGE
TOP
MARK
PART
TEMP. RANGE
MAX9040AEUK-T -40°C to +85°C
MAX9040BEUK-T -40°C to +85°C
MAX9041AEUT-T* -40°C to +85°C
MAX9041BEUT-T* -40°C to +85°C
MAX9041AESA* -40°C to +85°C
MAX9041BESA* -40°C to +85°C
5 SOT23-5
5 SOT23-5
6 SOT23-6
6 SOT23-6
8 SO
ADNV
ADNX
AAHF
AAHH
—
The reference output voltage is set to 2.048V in the
MAX9040–MAX9043 and to 2.500V in the MAX9050–
MAX9053. These devices are offered in two grades: an
A grade with 0.4% initial accuracy and 6ppm/°C
tempco, and a B grade with 1% initial accuracy and
100ppm/°C tempco. The voltage reference features a
proprietary curvature-correction circuit and laser-
trimmed thin-film resistors. The series-mode references
can sink or source up to 500µA of load current.
8 SO
—
MAX9042AEUA
MAX9042BEUA
MAX9042AESA
MAX9042BESA
MAX9043AEUB
MAX9043BEUB
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
8 µMAX
8 µMAX
8 SO
—
—
—
8 SO
—
10 µMAX
10 µMAX
—
—
Ordering Information continued at end of data sheet.
*Future product—contact factory for availability.
Applications
Precision Battery Management
Pin Configurations
Window Comparators
IR Receivers
TOP VIEW
OUT
1
2
3
5
4
V
CC
Level Translators
Digital Line Receivers
MAX9040
MAX9050
V
EE
Typical Operating Circuit appears at end of data sheet.
Functional Diagrams appear at end of data sheet.
Selector Guide appears at end of data sheet.
IN+
REF
SOT23-5
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
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