19-1569; Rev 4; 10/02
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
General Description
The MAX9039鈥揗AX9043 and MAX9050鈥揗AX9053 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
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
have a single comparator and reference consuming
only 40碌A of supply current. The MAX9042/MAX9043/
MAX9052/MAX9053 have dual comparators and one
reference, and consume only 55碌A of supply current.
Low-voltage operation and low supply current make
these devices ideal for battery-operated systems.
The comparators feature Rail-to-Rail
庐
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.
The reference output voltage is set to 1.23V in the
MAX9039, to 2.048V in the MAX9040鈥揗AX9043, and to
2.500V in the MAX9050鈥揗AX9053. The MAX9040鈥?/div>
MAX9043 and the MAX9050鈥揗AX9053 are offered in
two grades: an A grade with 0.4% initial accuracy and
6ppm/掳C tempco, and a B grade with 1% initial accura-
cy and 100ppm/掳C tempco. The voltage references
feature a proprietary curvature-correction circuit and
laser-trimmed thin-film resistors. These series-mode ref-
erences can sink or source up to 500碌A of load current.
Features
o
Comparator + Precision Reference in UCSP/SOT23
o
2.5V to 5.5V Single-Supply Operation
(MAX9039鈥揗AX9043)
o
Low Supply Current (MAX9039/MAX9040/
MAX9041/MAX9050/MAX9051)
40碌A Quiescent
50碌A with 100kHz Switching
o
400ns Propagation Delay
o
Rail-to-Rail Inputs
o
Rail-to-Rail Output Stage Sinks and Sources 8mA
o
Internal 卤3mV Hysteresis
o
Voltage Reference Offers:
卤0.4% (max) Initial Accuracy (A grade)
6ppm/掳C (typ) Temperature Coefficient (A grade)
Stable for 0 to 4.7nF Capacitive Loads
MAX9039鈥揗AX9043/MAX9050鈥揗AX9053
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
6 UCSP-6
5 SOT23-5
5 SOT23-5
6 SOT23-6
6 SOT23-6
8 SO
8 SO
TOP
MARK
AAZ
ADNW
ADNX
AAHF
AAHH
鈥?/div>
鈥?/div>
MAX9039BEBT-T*
-40掳C to +85掳C
MAX9040AEUK-T
-40掳C to +85掳C
MAX9040BEUK-T -40掳C to +85掳C
MAX9041AEUT-T
MAX9041BEUT-T
MAX9041AESA
MAX9041BESA
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
*UCSP
reliability is integrally linked to the user鈥檚 assembly
methods, circuit board material, and environment. Refer to the
UCSP Reliability section of this data sheet for more information.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
Pin Configurations
TOP VIEW (BUMPS ON BOTTOM)
IN+
B1
A1
V
EE
OUT
1
Applications
Precision Battery
Management
Window Comparators
IR Receivers
Typical Operating Circuit and Functional Diagrams appear
at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
UCSP is a trademark of Maxim Integrated Products, Inc.
TOP VIEW
5
V
CC
Level Translators
Digital Line Receivers
MAX9039
IN-
B2
A2
OUT
V
EE
2
MAX9040
MAX9050
4
REF
REF
B3
A3
V
CC
IN+
3
UCSP
SOT23-5
Pin Configurations continued at end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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