参数资料
型号: MAX9024ASD+
厂商: Maxim Integrated Products
文件页数: 5/8页
文件大小: 0K
描述: IC COMPARATOR QUAD 14-SOIC
其它有关文件: Automotive Product Guide
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 50
类型: 通用
元件数: 4
输出类型: CMOS,满摆幅,TTL
电压 - 电源,单路/双路(±): 2.5 V ~ 5.5 V,±1.25 V ~ 2.75 V
电压 - 输入偏移(最小值): 1mV @ 5V
电流 - 输入偏压(最小值): 0.003µA @ 5V
电流 - 静态(最大值): 5µA
CMRR, PSRR(标准): 100dB CMRR,80dB PSRR
传输延迟(最大): 8µs
磁滞: 4mV
工作温度: -40°C ~ 125°C
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
安装类型: 表面贴装
包装: 管件
产品目录页面: 1391 (CN2011-ZH PDF)
MAX9021/MAX9022/MAX9024
Micropower, Ultra-Small, Single/Dual/Quad,
Single-Supply Comparators
_______________________________________________________________________________________
5
Detailed Description
The MAX9021/MAX9022/MAX9024 are single/dual/
quad, low-cost, low-power comparators that consume
only 2.8A and provide a propagation delay, tPD, typi-
cally 3s. They have an operating-supply voltage from
2.5V to 5.5V when operating from a single supply and
from ±1.25V to ±2.75V when operating from dual power
supplies. Their common-mode input voltage range
extends from the negative supply to within 1.1V of the
positive supply. Internal hysteresis ensures clean out-
put switching, even with slow-moving input signals.
Applications Information
Adding Hysteresis
Hysteresis extends the comparator’s noise margin by
increasing the upper threshold and decreasing the
lower threshold. A voltage-divider from the compara-
tor’s output sets the trip voltage. Therefore, the trip volt-
age is related to the output voltage.
These comparators have 4mV internal hysteresis.
Additional hysteresis can be generated with two resis-
tors, using positive feedback (Figure 1). Use the follow-
ing procedure to calculate resistor values:
1) Find the trip points of the comparator using these for-
mulas:
VTH = VREF + ((VDD - VREF)R2) / (R1 + R2)
VTL = VREF(1 - (R2 / (R1 + R2))
where VTH is the threshold voltage at which the com-
parator switches its output from high to low as VIN
rises above the trip point. VTL is the threshold volt-
age at which the comparator switches its output from
low to high as VIN drops below the trip point.
Pin Description
PIN
MAX9021
MAX9022
MAX9024
NAME
FUNCTION
1—
IN+
Comparator Noninverting Input
24
11
VSS
Negative Supply Voltage
3—
IN-
Comparator Inverting Input
4—
OUT
Comparator Output
58
4
VDD
Positive Supply Voltage. Bypass with a 0.1F capacitor to GND.
—1
1
OUTA
Comparator A Output
—2
2
INA-
Comparator A Inverting Input
—3
3
INA+
Comparator A Noninverting Input
—5
5
INB+
Comparator B Noninverting Input
—6
6
INB-
Comparator B Inverting Input
—7
7
OUTB
Comparator B Output
——
8
OUTC
Comparator C Output
——
9
INC-
Comparator C Inverting Input
——
10
INC+
Comparator C Noninverting Input
——
12
IND+
Comparator D Noninverting Input
——
13
IND-
Comparator D Inverting Input
——
14
OUTD
Comparator D Output
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