- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377701 > LT1394CS8 (LINEAR TECHNOLOGY CORP) 7ns, Low Power, Single Supply, Ground-Sensing Comparator PDF資料下載
參數(shù)資料
| 型號： | LT1394CS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | 7ns, Low Power, Single Supply, Ground-Sensing Comparator |
| 中文描述： | COMPARATOR, 4000 uV OFFSET-MAX, 7 ns RESPONSE TIME, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 213K |
| 代理商： | LT1394CS8 |
8
LT1394
–
+
LT1394
1394 F02
FET PROBE
FET PROBE
* TOTAL LEAD LENGTH INCLUDING DEVICE PIN.
SOCKET AND CAPACITOR LEADS SHOULD BE
LESS THAN 0.5 IN. USE GROUND PLANE
** (V
OS
+ OVERDRIVE)/200
25
25
5V
0.01
μ
F*
0.01
μ
F
10k
50
V1**
2N3866
0V
–3V
–5V
–5V
50
PULSE
IN
750
400
0.1
μ
F
130
0V
–100mV
Q
Q
APPLICATIO
S I
FOR
ATIO
U
W
U
U
Figure 2. Response Time Test Circuit
circuit is the lack of feedthrough from the generator to the
comparator input. This prevents overshoot on the com-
parator input, which would give a false fast reading on
comparator response time.
To adjust the circuit for exactly 5mV overdrive, V1 is
adjusted so that the LT1394 output under test settles to
1.4V (in the linear region). Then V1 is changed by –1V to
set overdrive to 5mV.
High Speed Design Techniques
A substantial amount of design effort has made the LT1394
relatively easy to use. It is much less prone to oscillation
than some slower comparators, even with slow input
signals. However, as with any high speed comparator,
there are a number of pitfalls which may arise because of
PC board layout and design. The most common problems
involve power supply bypassing. Bypassing is necessary
to maintain low supply impedance. DC resistance and
inductance in supply wires and PC traces can quickly build
up to unacceptable levels. This allows the supply line to
move with changing internal current levels of the con-
nected devices. This will almost always result in improper
operation. In addition, adjacent devices connected through
an unbypassed supply can interact with each other through
the finite supply impedances. Bypass capacitors furnish a
simple solution to this problem by providing a local
reservoir of energy at the device, keeping supply imped-
ances low.
Bypass capacitors should be as close as possible to the
LT1394. A good high frequency capacitor such as a 0.1
μ
F
ceramic is recommended, in parallel with a larger capaci-
tor such as a 4.7
μ
F tantalum.
Poor trace routes and high source impedances are also
common sources of problems. Be sure to keep trace
lengths as short as possible, and avoid running any output
trace adjacent to an input trace to prevent unnecessary
coupling. If output traces are longer than a few inches, be
sure to terminate them with a resistor to eliminate any
reflections that may occur. Resistor values are typically
250
to 400
. Also, be sure to keep source impedances
as low as possible, preferably 1k
or less.
Crystal Oscillators
Figure 3’s circuits are crystal oscillators. In the circuit (a)
the resistors at the LT1394’s positive input set a DC bias
point. The 2k-0.068
μ
F path sets up phase shifted feedback
and the circuit looks like a wideband unity-gain follower at
DC. The crystal’s path provides resonant positive feed-
back and stable oscillation occurs. The circuit (b) is
similar, but supports oscillation frequencies to 30MHz.
Above 10MHz, AT-cut crystals operate in overtone mode.
Because of this, oscillation can occur at multiples of the
desired frequency. The damper network rolls off gain at
high frequency, ensuring proper operation.
Switchable Output Crystal Oscillator
Figure 4 permits crystals to be electronically switched by
logic commands. This circuit is similar to the previous
examples, except that oscillation is only possible when
one of the logic inputs is biased high.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1394 | 7ns, Low Power, Single Supply, Ground-Sensing Comparator(7ns, 低功耗，單電源，地電平敏感比較器) |
| LT1395CS8 | Single/Dual/Quad 400MHz Current Feedback Amplifier |
| LT1396CMS8 | Octal D-Type Edge-Triggered Flip-Flops With 3-State Outputs 20-SOIC 0 to 70 |
| LT1396CS8 | Single/Dual/Quad 400MHz Current Feedback Amplifier |
| LT1398CS | Low Cost Dual and Triple 300MHz Current Feedback Amplifiers with Shutdown |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1394CS8#PBF | 功能描述:IC COMPARATOR LOW PWR 7NS 8-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:UltraFast™ 標(biāo)準(zhǔn)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(biāo)準(zhǔn)）:84mA @ 5V 電流 - 靜態(tài)（最大值）:120µA CMRR, PSRR（標(biāo)準(zhǔn)）:- 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 |
| LT1394CS8#PBF | 制造商:Linear Technology 功能描述:High Speed Comparator IC |
| LT1394CS8#TR | 功能描述:IC COMPARATOR 7NS LOW PWR 8SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:UltraFast™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
| LT1394CS8#TRPBF | 功能描述:IC COMPARATOR LOW PWR 7NS 8-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:UltraFast™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
| LT1394CS8PBF | 制造商:Linear Technology 功能描述:Ground-Sensing Comparator 7ns SOIC8 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。