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參數(shù)資料
| 型號(hào)： | MAX961EUA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,Beyond-the-Rails Comparators |
| 中文描述： | COMPARATOR, 4500 uV OFFSET-MAX, 4.5 ns RESPONSE TIME, PDSO8 |
| 封裝： | UMAX-8 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 371K |
| 代理商： | MAX961EUA |
M
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
_______________________________________________________________________________________
7
_______________Detailed Description
The MAX961–MAX964/MAX997/MAX999 single-supply
comparators feature internal hysteresis, ultra-high-
speed operation, and low power consumption. Their
outputs are guaranteed to pull within 0.52V of either rail
without external pull-up or pull-down circuitry. Beyond-
the-Rails
input voltage range and low-voltage, single-
supply operation make these devices ideal for portable
equipment. These comparators all interface directly to
CMOS logic.
Timing
Most high-speed comparators oscillate in the linear
region because of noise or undesirable parasitic feed-
back. This can occur when the voltage on one input is
close to or equal to the voltage on the other input.
These devices have a small amount of internal hystere-
sis to counter parasitic effects and noise.
The added hysteresis of the MAX961–MAX964/MAX997/
MAX999 creates two trip points: one for the rising input
voltage and one for the falling input voltage (Figure 1).
The difference between the trip points is the hysteresis.
When the comparator’s input voltages are equal, the
hysteresis effectively causes one comparator input
voltage to move quickly past the other, thus taking the
input out of the region where oscillation occurs. Standard
comparators require hysteresis to be added with external
resistors. The fixed internal hysteresis eliminates these
resistors.
The MAX961/MAX963 include internal latches that allow
storage of comparison results. LE has a high input
impedance. If LE is low, the latch is transparent (i.e.,
the comparator operates as though the latch is not pre-
sent). The comparator’s output state is stored when LE
is pulled high. All timing constraints must be met when
using the latch function (Figure 2).
Input Stage Circuitry
The MAX961–MAX964/MAX997/MAX999 include inter-
nal protection circuitry that prevents damage to the pre-
cision input stage from large differential input voltages.
This protection circuitry consists of two groups of three
front-to-back diodes between IN+ and IN-, as well as
two 200
resistors (Figure 3). The diodes limit the dif-
ferential voltage applied to the comparator’s internal
circuitry to no more than 3V
F
, where V
F
is the diode’s
forward-voltage drop (about 0.7V at +25°C).
Q
V
OL
V
OH
V
TRIP+
V
HYST
V
TRIP-
Q
V
OL
V
OH
V
TRIP+
+ V
TRIP-
2
V
OS
=
V
IN-
= 0V
V
IN+
Figure 1. Input and Output Waveforms, Noninverting Input Varied
相關(guān)PDF資料 |
PDF描述 |
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| MAX999EUK-T | Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,Beyond-the-Rails Comparators |
| MAX997 | Hex 2-Input NAND Drivers 20-CFP -55 to 125 |
| MAX997ESA | Hex 2-Input NAND Drivers 20-CDIP -55 to 125 |
| MAX961 | Octal Buffers/Drivers With 3-State Outputs 20-LCCC -55 to 125 |
| MAX961ESA | Octal Buffers/Drivers With 3-State Outputs 20-CDIP -55 to 125 |
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| MAX961EUA+ | 功能描述:校驗(yàn)器 IC Single Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MAX961EUA+T | 功能描述:校驗(yàn)器 IC Single Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MAX961EUA-T | 功能描述:校驗(yàn)器 IC Single Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MAX9620AXK+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 Auto-Zero Op Amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX9621AUB/V+ | 功能描述:板機(jī)接口霍耳效應(yīng)/磁性傳感器 Dual 2-Wire Hall-Effect Sensor Interface with Analog and Digital Outputs RoHS:否 制造商:Honeywell 類型:Bipolar Hall-Effect Digital Position Sensor 工作電源電壓:3 V to 24 V 電源電流:3.5 mA 最大輸出電流:20 mA 工作點(diǎn)最小值/最大值:5 G, 55 G 最小/最大釋放點(diǎn)（Brp）:- 55 G, - 5 G 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23 |
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