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| 型号： | MAX9018AEKA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/17页 |
| 文件大小： | 0K |
| 描述： | IC COMPARATOR DUAL SOT23-8 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | Beyond-the-Rails™ |
| 类型： | 带电压基准 |
| 元件数： | 2 |
| 输出类型： | CMOS，开路漏极，满摆幅 |
| 电压 - 电源，单路/双路(±)： | 1.8 V ~ 5.5 V |
| 电压 - 输入偏移（最小值）： | 5mV @ 5V |
| 电流 - 输入偏压（最小值）： | 0.001µA @ 5V |
| 电流 - 输出（标准）： | 50mA |
| 电流 - 静态（最大值）： | 2.8µA |
| CMRR, PSRR（标准）： | 80dB PSRR |
| 传输延迟（最大）： | 31µs |
| 磁滞： | 4mV |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | SOT-23-8 |
| 安装类型： | 表面贴装 |
| 包装： | 标准包装 |
| 产品目录页面： | 1391 (CN2011-ZH PDF) |
| 其它名称： | MAX9018AEKA+TDKR |
MAX9015–MAX9020
SOT23, Dual, Precision, 1.8V, Nanopower
Comparators With/Without Reference
11
Maxim Integrated
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
35k
Ω 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)
VEND-OF-
LIFE (V)
CAPACITY,
AA SIZE
(mA-hr)
MAX9015A/
MAX9016A
OPERATING
TIME (hr)
MAX9017/
MAX9018
OPERATING
TIME (hr)
MAX9019/
MAX9020
OPERATING
TIME (hr)
Alkaline (2 cells)
No
3.0
1.8
2000
2000k
1540k
1333k
Nickel-cadmium
(2 cells)
Yes
2.4
1.8
750
750k
570k
500k
Nickel-metal-hydride
(2 cells)
Yes
2.4
1.8
1000
1000k
770k
660k
Lithium-ion (1 cell)
Yes
3.6
2.9
1000
1000k
770k
660k
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9018AESA+ | 制造商:Maxim Integrated Products 功能描述:DUAL, PRECISION, 1.8V, NANOPOWER COMPA - Rail/Tube |
| MAX9018B | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:SOT23, Dual, Precision, 1.8V, Nanopower Comparators With/Without Reference |
| MAX9018BEKA | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
| MAX9018BEKA+ | 制造商:Maxim Integrated Products 功能描述:COMPARATOR 2 R-R O/P 5.5V 8PIN SOT-23 - Rail/Tube |
| MAX9018BEKA+T | 功能描述:校验器 IC Dual Precision 1.8V nPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
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