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參數資料
| 型號： | ADCMP604 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Rail-to-Rail, Very Fast, 2.5 V to 5.5 V, Single-Supply LVDS Comparators |
| 中文描述： | 軌到軌，速度非?？欤?.5 V至5.5 V，單電源比較器的LVDS |
| 文件頁數： | 11/16頁 |
| 文件大?。?/td> | 276K |
| 代理商： | ADCMP604 |
ADCMP604/ADCMP605
The ADCMP604 and ADCMP605 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 each the
ADCMP604 and ADCMP605 have substantially equal delays for
positive-going and negative-going inputs and very low output
skews.
Rev. 0 | Page 11 of 16
Q/Q OUTPUT
INPUT VOLTAGE
500mV OVERDRIVE
10mV OVERDRIVE
DISPERSION
V
N
± V
OS
0
Figure 17. Propagation Delay—Overdrive Dispersion
Q/Q OUTPUT
INPUT VOLTAGE
10V/ns
1V/ns
DISPERSION
V
N
± V
OS
0
Figure 18. 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 19. As the input
voltage approaches the threshold (0.0 V, in this example) from
below the threshold region in a positive direction, the
comparator switches from low to high when the input crosses
+V
H
/2. The new switching threshold becomes V
H
/2. The
comparator remains in the high state until the threshold, V
H
/2,
is crossed from below the threshold region in a negative direction.
In this manner, noise or feedback output signals centered on
0.0 V input cannot cause the comparator to switch states unless it
exceeds the region bounded by ±V
H
/2.
OUTPUT
INPUT
0
V
OL
V
OH
+V
H
2
–V
H
2
0
Figure 19. 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.
The ADCMP605 comparator offers a programmable hysteresis
feature that significantly improves accuracy and stability.
Connecting an external pull-down resistor or a current source
from the LE/HYS pin to GND, varies the amount of hysteresis
in a predictable and stable manner. Leaving the LE/HYS pin
disconnected or driving it high removes hysteresis. The
maximum hysteresis that can be applied using this pin is
approximately 160 mV. Figure 20 illustrates the amount of
hysteresis applied as a function of external resistor value.
Figure 11 illustrates hysteresis as a function of current.
The hysteresis control pin appears as a 1.25 V bias voltage seen
through a series resistance of 7 kΩ ± 20% throughout the
hysteresis control range. The advantages of applying hysteresis
in this manner are improved accuracy, improved stability,
reduced component count, and maximum versatility. An
external bypass capacitor is not recommended on the HYS pin
because it would likely degrade the jitter performance of the
device and impair the latch function. As described in the
Using/Disabling the Latch Feature section, hysteresis control
need not compromise the latch function.
相關PDF資料 |
PDF描述 |
|---|---|
| ADCMP606 | Rail-to-Rail, Very Fast, 2.5 V to 5.5 V, Single-Supply CML Comparators |
| ADCMP606_0610 | Rail-to-Rail, Very Fast, 2.5 V to 5.5 V, Single-Supply CML Comparators |
| ADCMP606BKSZ-R2 | Rail-to-Rail, Very Fast, 2.5 V to 5.5 V, Single-Supply CML Comparators |
| ADCMP606BKSZ-REEL7 | Rail-to-Rail, Very Fast, 2.5 V to 5.5 V, Single-Supply CML Comparators |
| ADCMP606BKSZ-RL | Rail-to-Rail, Very Fast, 2.5 V to 5.5 V, Single-Supply CML Comparators |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADCMP604_07 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Rail-to-Rail, Very Fast, 2.5 V to 5.5 V, Single-Supply LVDS Comparators |
| ADCMP604BKSZ | 制造商:Analog Devices 功能描述:COMPARATOR SGL R-R I/P 5.5V 6PIN SC-70 - Bulk |
| ADCMP604BKSZ-R2 | 功能描述:IC COMP TTL/CMOS 1CHAN 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: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（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) 產品目錄頁面:1268 (CN2011-ZH PDF) 其它名稱:*LMV331M5*LMV331M5/NOPBLMV331M5CT |
| ADCMP604BKSZ-R21 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Rail-to-Rail, Very Fast, 2.5 V to 5.5 V, Single-Supply LVDS Comparators |
| ADCMP604BKSZ-R7KL1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
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