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PDF MAX9018A Data sheet ( Hoja de datos )
| Número de pieza | MAX9018A | |
| Descripción | SOT23 / Dual / Precision / 1.8V / Nanopower Comparators With/Without Reference | |
| Fabricantes | Maxim Integrated | |
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19-2874; Rev 1; 7/03
SOT23, Dual, Precision, 1.8V, Nanopower
Comparators With/Without Reference
General Description
The single MAX9015/MAX9016 and dual MAX9017–
MAX9020 nanopower comparators in space-saving
SOT23 packages feature Beyond-the-Rails™ inputs
and are guaranteed to operate down to 1.8V. The A-
grade packages feature an on-board 1.236V ±1% ref-
erence, while the B-grade packages feature a 1.24V
±1.75% reference. An ultra-low supply current of 0.85µA
(MAX9019/MAX9020), 1µA (MAX9015/MAX9016), or
1.2µA (MAX9017/MAX9018) makes the MAX9015–
MAX9020 family of comparators ideal for all 2-cell bat-
tery monitoring/management applications.
The unique design of the MAX9015–MAX9020 output
stage limits supply-current surges while switching,
which virtually eliminates the supply glitches typical of
many other comparators. This design also minimizes
overall power consumption under dynamic conditions.
The MAX9015/MAX9017/MAX9019 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 6mA. The MAX9016/MAX9018/MAX9020
have an open-drain output stage that makes them suit-
able for mixed-voltage system design. All devices are
available in the ultra-small 8-pin SOT23 package.
Refer to the MAX9117–MAX9120 data sheet for similar
single comparators with or without reference in a tiny
SC70 package.
2-Cell Battery
Monitoring/Management
Ultra-Low Power Systems
Mobile Communications
Notebooks and PDAs
Threshold Detectors/
Discriminators
Applications
Window Detectors
Sensing at Ground or
Supply Line
Telemetry and Remote
Systems
Medical Instruments
Features
o Ultra-Low Total Supply Current
0.85µA (MAX9019/MAX9020)
1.0µA (MAX9015A/MAX9016A)
1.2µA (MAX9017/MAX9018)
o Guaranteed Operation Down to 1.8V
o Precision VOS < 5mV (max)
o Internal 1.236V ±1% Reference (A Grade)
o Input Voltage Range Extends 200mV
Beyond-the-Rails
o CMOS Push-Pull Output with ±6mA Drive
Capability (MAX9015/MAX9017/MAX9019)
o Open-Drain Output Versions Available
(MAX9016/MAX9018/MAX9020)
o Crowbar-Current-Free Switching
o Internal 4mV Hysteresis for Clean Switching
o No Phase Reversal for Overdriven Inputs
o Dual Versions in Space-Saving 8-Pin SOT23
Package
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX9015AEKA-T
MAX9016AEKA-T
MAX9017AEKA-T
MAX9017BEKA-T
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
AEIW
AEIX
AEIQ
AEIS
Ordering Information continued at end of data sheet.
Pin Configurations appear at end of data sheet.
Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Selector Guide
PART
MAX9015A
MAX9016A
MAX9017A
MAX9017B
MAX9018A
MAX9018B
MAX9019
MAX9020
COMPARATOR(S)
1
1
2
2
2
2
2
2
INTERNAL REFERENCE (V)
1.236 ±1%
1.236 ±1%
1.236 ±1%
1.240 ±1.75%
1.236 ±1%
1.240 ±1.75%
—
—
OUTPUT TYPE
Push-pull
Open drain
Push-pull
Push-pull
Open drain
Open drain
Push-pull
Open drain
SUPPLY CURRENT (µA)
1
1
1.2
1.2
1.2
1.2
0.85
0.85
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
SOT23, Dual, Precision, 1.8V, Nanopower
Comparators With/Without Reference
ELECTRICAL CHARACTERISTICS—MAX9019/MAX9020 (Duals without REF) (continued)
(VCC = 5V, VEE = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Rise Time
tRISE CL = 15pF (MAX9019 only)
1.6 µs
Fall Time
Power-Up Time
tFALL
tON
CL = 15pF
0.2 µs
1.2 ms
Note 1: All devices are 100% tested at TA = +25°C. Specifications over temperature (TA = TMIN to TMAX) are guaranteed by design,
not production tested.
Note 2: VOS is defined as the center of the hysteresis band at the input.
Note 3: The hysteresis-related trip points are defined as the edges of the hysteresis band, measured with respect to the center of
the band (i.e., VOS) (Figure 1).
Note 4: Specified with an input overdrive (VOVERDRIVE) of 100mV, and a load capacitance of CL = 15pF. VOVERDRIVE is defined
above and beyond the offset voltage and hysteresis of the comparator input.
Typical Operating Characteristics
(VCC = 5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.)
MAX9015/MAX9016
SUPPLY CURRENT
vs. SUPPLY VOLTAGE AND TEMPERATURE
1.6
1.5
1.4
1.3 TA = +85°C
1.2
1.1
1.0 TA = +25°C
0.9
0.8
0.7
0.6
0.5 TA = -40°C
0.4
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
MAX9017/MAX9018
SUPPLY CURRENT
vs. SUPPLY VOLTAGE AND TEMPERATURE
2.0
1.9
1.8
1.7 TA = +85°C
1.6
1.5
1.4 TA = +25°C
1.3
1.2
1.1
1.0
0.9 TA = -40°C
0.8
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
MAX9019/MAX9020
SUPPLY CURRENT
vs. SUPPLY VOLTAGE AND TEMPERATURE
1.6
1.5
1.4 TA = +85°C
1.3
1.2
1.1
1.0
0.9 TA = +25°C
0.8
0.7
0.6 TA = -40°C
0.5
0.4
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
MAX9015/MAX9016
SUPPLY CURRENT vs. TEMPERATURE
1.6
1.5
1.4
1.3
1.2 VCC = 5V
1.1
1.0 VCC = 3V
0.9
0.8
0.7 VCC = 1.8V
0.6
0.5
0.4
-40 -15 10
35 60
85
TEMPERATURE (°C)
MAX9017/MAX9018
SUPPLY CURRENT vs. TEMPERATURE
2.0
1.9
1.8
1.7 VCC = 5V
1.6 VCC = 3V
1.5
1.4
1.3
1.2
1.1 VCC = 1.8V
1.0
0.9
0.8
-40 -15 10
35 60
85
TEMPERATURE (°C)
MAX9019/MAX9020
SUPPLY CURRENT vs. TEMPERATURE
1.6
1.5
1.4 VCC = 5V
1.3
1.2
1.1 VCC = 3V
1.0
0.9
0.8 VCC = 1.8V
0.7
0.6
0.5
0.4
-40 -15 10
35 60
85
TEMPERATURE (°C)
_______________________________________________________________________________________ 5
5 Page 
SOT23, Dual, Precision, 1.8V, Nanopower
Comparators With/Without Reference
Detailed Description
The MAX9015–MAX9018 feature an on-board 1.24V
±0.5% (±1.45% for the B grade) reference, yet draw an
ultra-low supply current. The MAX9019/MAX9020
(duals without reference) consume just 850nA of supply
current. All devices are guaranteed to operate down to
1.8V supply. Their common-mode input voltage range
extends 200mV beyond-the-rails. An internal 4mV hys-
teresis ensures clean output switching, even with slow-
moving input signals. Large internal output drivers
swing rail-to-rail with up to ±6mA loads (MAX9015/
MAX9017/MAX9019).
The output stage employs a unique design that mini-
mizes supply-current surges while switching, which vir-
tually eliminates the supply glitches typical of many
other comparators. The MAX9015/MAX9017/MAX9019
have a push-pull output stage that sinks as well as
sources current. The MAX9016/MAX9018/MAX9020
have an open-drain output stage that can be pulled
beyond VCC up to 5.5V above VEE. These open-drain
versions are ideal for implementing wire-ORed output
logic functions.
Input Stage Circuitry
The input common-mode voltage ranges extend from
VEE - 0.2V to VCC + 0.2V. These comparators operate
at any differential input voltage within these limits. Input
bias current is typically ±150pA at the trip point, if the
input voltage is between the supply rails. Comparator
inputs are protected from overvoltage by internal ESD
protection diodes connected to the supply rails. As the
input voltage exceeds the supply rails, these ESD pro-
tection diodes become forward biased and begin to
conduct increasing input bias current (see the Input
Bias Current vs. Input Bias Voltage graph in the Typical
Operating Characteristics).
Output Stage Circuitry
The MAX9015–MAX9020 feature a unique break-
before-make output stage capable of driving ±8mA
loads rail-to-rail. Many comparators consume orders of
magnitude more current during switching than during
steady-state operation. However, with the MAX9015–
MAX9020 family of comparators, the supply-current
change during an output transition is extremely small.
In the Typical Operating Characteristics, the Supply
Current vs. Output Transition Frequency graphs show
the minimal supply-current increase as the output
switching frequency approaches 1kHz. This character-
istic reduces the need for power-supply filter capaci-
tors to reduce glitches created by comparator
switching currents. In battery-powered applications,
this characteristic results in a substantial increase in
battery life.
Reference (MAX9015–MAX9018)
The MAX9015–MAX9018s’ internal +1.24V reference
has a typical temperature coefficient of 40ppm/°C over
the full -40°C to +85°C temperature range. The refer-
ence is a very-low-power bandgap cell, with a typical
35kΩ output impedance. REF can source and sink up
to 100nA to external circuitry. For applications needing
increased drive, buffer REF with a low input-bias cur-
rent op amp such as the MAX4162. Most applications
require no REF bypass capacitor. For noisy environ-
ments or fast transients, connect a 1nF to 10nF ceramic
capacitor from REF to GND.
Applications Information
Low-Voltage, Low-Power Operation
The MAX9015–MAX9020 are ideally suited for use with
most battery-powered systems. Table 1 lists a variety of
battery types, capacities, and approximate operating
times for the MAX9015–MAX9020, assuming nominal
conditions.
Table 1. Battery Applications Using the MAX9015–MAX9020
BATTERY
TYPE
RECHARGEABLE
VFRESH
(V)
Alkaline (2 cells)
Nickel-cadmium
(2 cells)
Nickel-metal-hydride
(2 cells)
Lithium-ion (1 cell)
No
Yes
Yes
Yes
3.0
2.4
2.4
3.6
VEND-OF-
LIFE (V)
CAPACITY,
AA SIZE
(mA-hr)
MAX9015A/
MAX9016A
OPERATING
TIME (hr)
1.8 2000 2000k
MAX9017/
MAX9018
OPERATING
TIME (hr)
1540k
MAX9019/
MAX9020
OPERATING
TIME (hr)
1333k
1.8 750
750k
570k
500k
1.8 1000 1000k
2.9 1000 1000k
770k
770k
660k
660k
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MAX9018A.PDF ] | |
Hoja de datos destacado
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