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參數(shù)資料
| 型號： | AD8465WBCPZ-WP |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC COMPARATOR 1CH LVDS 12LFCSP |
| 標準包裝： | 50 |
| 類型： | 帶鎖銷 |
| 元件數(shù)： | 1 |
| 輸出類型： | 補充型，LVDS，滿擺幅 |
| 電壓 - 電源，單路/雙路(±)： | 2.5 V ~ 5.5 V |
| 電壓 - 輸入偏移（最小值）： | 2mV @ 2.5V |
| 電流 - 輸入偏壓（最小值）： | 5µA @ 2.5V |
| 電流 - 輸出（標準）： | 50mA |
| 電流 - 靜態(tài)（最大值）： | 3mA |
| CMRR, PSRR（標準）： | 50dB CMRR，60dB PSRR |
| 傳輸延遲（最大）： | 3ns |
| 磁滯： | 100µV |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 12-VFQFN 裸露焊盤，CSP |
| 安裝類型： | 表面貼裝 |
| 包裝： | 托盤 - 晶粒 |
| 產(chǎn)品目錄頁面： | 764 (CN2011-ZH PDF) |
Data Sheet
AD8465
Rev. A | Page 11 of 16
COMPARATOR PROPAGATION DELAY
DISPERSION
The AD8465 comparator is designed to reduce propagation
delay dispersion over a wide input overdrive range of 5 mV
to VCCI 1 V. Propagation delay dispersion is the variation in
propagation delay that results from a change in the degree of
overdrive or slew rate (how far or how fast the input signal is
driven past the switching threshold).
Propagation delay dispersion is a specification that becomes
important in high speed, time-critical applications, such as data
communications, automatic test and measurement, and instru-
mentation. It is also important in event-driven applications, such
as pulse spectroscopy, nuclear instrumentation, and medical
imaging. Dispersion is defined as the variation in propagation
delay as the input overdrive conditions are changed (see Figure 16
and Figure 17).
The AD8465 dispersion is typically <1.6 ns as the overdrive
varies from 10 mV to 125 mV. This specification applies to
both positive and negative signals because the AD8465 has
substantially equal delays for positive-going and negative-
going inputs and very low output skews.
Q/Q OUTPUT
INPUT VOLTAGE
500mV OVERDRIVE
10mV OVERDRIVE
DISPERSION
VN ± VOS
07
95
8-
01
6
Figure 16. Propagation Delay—Overdrive Dispersion
Q/Q OUTPUT
INPUT VOLTAGE
10V/ns
1V/ns
DISPERSION
VN ± VOS
07
95
8-
0
17
Figure 17. Propagation Delay—Slew Rate Dispersion
COMPARATOR HYSTERESIS
The addition of hysteresis to a comparator is often desirable in
a noisy environment, or when the differential input amplitudes
are relatively small or slow moving. The transfer function for a
comparator with hysteresis is shown in Figure 18. As the input
voltage approaches the threshold (0 V, in this example) from
below the threshold region in a positive direction, the comparator
switches from low to high when the input crosses +VH/2. The
new switching threshold becomes VH/2. The comparator remains
in the high state until the VH/2 threshold is crossed from below
the threshold region in a negative direction. In this manner, noise
or feedback output signals centered on 0 V input cannot cause
the comparator to switch states unless it exceeds the region
bounded by ±VH/2.
OUTPUT
INPUT
0V
VOL
VOH
+VH
2
–VH
2
07
958
-01
8
Figure 18. Comparator Hysteresis Transfer Function
The customary technique for introducing hysteresis into a
comparator uses positive feedback from the output back to
the input. One limitation of this approach is that the amount
of hysteresis varies with the output logic levels, resulting in
hysteresis that is not symmetric about the threshold. The
external feedback network can also introduce significant
parasitics that reduce high-speed performance and induce
oscillation in some cases.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
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| AD8468 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Rail-to-Rail, Fast, Low Power 2.5 V to 5.5 V, Single-Supply TTL/CMOS Comparator |
| AD8468WBKSZ | 制造商:Analog Devices 功能描述:IC COMPARATOR TTL/CMOS SC70-6 制造商:Analog Devices 功能描述:IC, COMPARATOR, TTL/CMOS, SC70-6 制造商:Analog Devices 功能描述:IC, COMPARATOR, TTL/CMOS, SC70-6; Comparator Type:Low Power; No. of Comparators:1; Response Time:60ns; Supply Voltage Range:2.5V to 5.5V; Amplifier Case Style:SC-70; No. of Pins:6; IC Output Type:Voltage; Output Compatibility:CMOS, ;RoHS Compliant: Yes |
| AD8468WBKSZ-R7 | 功能描述:IC COMPARATOR TTL/CMOS SC70-6 RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標準包裝:1 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，開路集電極，TTL 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V 電壓 - 輸入偏移（最小值）:7mV @ 5V 電流 - 輸入偏壓（最小值）:0.25µA @ 5V 電流 - 輸出（標準）:84mA @ 5V 電流 - 靜態(tài)（最大值）:120µA CMRR, PSRR（標準）:- 傳輸延遲（最大）:600ns 磁滯:- 工作溫度:-40°C ~ 85°C 封裝/外殼:SC-74A，SOT-753 安裝類型:表面貼裝 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:1268 (CN2011-ZH PDF) 其它名稱:*LMV331M5*LMV331M5/NOPBLMV331M5CT |
| AD8468WBKSZ-RL | 功能描述:校驗器 IC R-R InputTTL/CMOSOut Comparitor 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 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
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