- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10792 > LT1394CS8#PBF (Linear Technology)IC COMPARATOR LOW PWR 7NS 8-SOIC PDF資料下載
參數(shù)資料
| 型號(hào)： | LT1394CS8#PBF |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 16/16頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC COMPARATOR LOW PWR 7NS 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 系列： | UltraFast™ |
| 類型： | 帶鎖銷 |
| 元件數(shù)： | 1 |
| 輸出類型： | CMOS，補(bǔ)充型，TTL |
| 電壓 - 輸入偏移（最小值）： | 2.5mV @ ±5V |
| 電流 - 輸入偏壓（最小值）： | 4.5µA @ ±5V |
| 電流 - 輸出（標(biāo)準(zhǔn)）： | 20mA |
| 電流 - 靜態(tài)（最大值）： | 8.5mA |
| CMRR, PSRR（標(biāo)準(zhǔn)）： | 100dB CMRR，100dB PSRR |
| 傳輸延遲（最大）： | 9ns |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 安裝類型： | 表面貼裝 |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁(yè)面： | 1323 (CN2011-ZH PDF) |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)當(dāng)前第16頁(yè)
9
LT1394
APPLICATIONS INFORMATION
WU
U
Temperature-Compensated Crystal Oscillator (TXCO)
Figure 5 is a temperature-compensated crystal oscillator
(TXCO). This circuit reduces oscillator temperature drift
by inserting a temperature-dependent compensatory cor-
rection into the crystal’s frequency trimming network.
This open-loop correction technique relies on cancellation
of the temperature characteristics of the oscillator, which
are quite repeatable.
The LT1394 and associated components form the crystal
oscillator, operating similarly to Figure 3’s examples. The
LM134, a temperature-dependent current source, biases
A1. A1 takes gain referred to the LM134’s output and the
negative offset supplied via the 470k
-LT1004 reference
path. Note that the LT1004’s negative voltage bias is
bootstrapped from the oscillator’s output, maintaining
single supply operation. This arrangement delivers tem-
perature-dependent bias to the varactor diode, causing a
scaled variation in the crystal’s resonance versus ambient
temperature. The varactor’s bias-dependent capacitance
shift pulls crystal frequency to complement the circuit’s
temperature drift. The simple first order fit provided by the
compensation is very effective. Figure 6 shows results.
The –70ppm frequency shift over 0
°C to 70°C is corrected
within a few ppm. The “FREQ SET” trim also biases the
varactor, allowing accurate output frequency setting. It is
worth noting that better compensation is possible by
including higher order terms in the temperature-to-volt-
age conversion.
18ns, 500
V Sensitivity Comparator
The ultimate limitation on comparator sensitivity is avail-
able gain. Unfortunately, increasing gain invariably
involves giving up speed. The gain vs. speed trade-off in a
fast comparator is usually a practical compromise
designed to satisfy most applications. Some situations,
however, require more sensitivity (e.g., higher gain) with
minimal impact on speed. Figure 7’s circuit adds a differ-
ential preamplifier ahead of the LT1394, increasing gain.
This permits 500
V comparisons in 18ns. A parallel path
DC stabilization approach eliminates preamplifier drift as
an error source. A1 is the differential preamplifier, operat-
ing at a gain of 100. Its output is AC-coupled to the LT1394.
Figure 3. Crystal Oscillators for Outputs to 30MHz. Circuit (b)’s
Damper Network Supresses Overtone Crystal’s Harmonic Modes
–
+
LT1394
2k
5V
2k
1MHz TO 10MHz
CRYSTAL (AT-CUT)
0.068
F
OUTPUT
1394 F03
2k
–
+
LT1394
2k
5V
2k
10MHz TO 25MHz
CRYSTAL (AT-CUT)
200pF
OUTPUT
820pF
22
(a)
(b)
1394 F04
–
+
LT1394
1k
5V
1k
75pF
D1
OUTPUT
B
A
LOGIC INPUTS
AS MANY STAGES
AS DESIRED
XTAL A
1k
RX
XTAL B
XTAL X
D2
DX
2k
= 1N4148
GROUND XTAL CASES
Figure 4. Switchable Output Crystal Oscillator. Biasing A or B
High Places Associated Crystal in Feedback Path. Additional
Crystal Branches Are Permissible
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1133ACN#PBF | IC 3DRV/5RCV RS232 5V 24-DIP |
| VE-JTR-MY-S | CONVERTER MOD DC/DC 7.5V 50W |
| LTC1384CSW#PBF | IC TXRX 5V RS232 LOW PWR 18-SOIC |
| VI-243-IW-S | CONVERTER MOD DC/DC 24V 100W |
| LT1714IGN#PBF | IC COMP R-RINOUT DUAL 16-SSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1394IS8 | 功能描述:IC COMPARATOR LOW PWR 7NS 8-SOIC 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 |
| LT1394IS8#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(kāi)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(yè)面:1268 (CN2011-ZH PDF) 其它名稱:*LMV331M5*LMV331M5/NOPBLMV331M5CT |
| LT1394IS8#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 |
| LT1394IS8#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 |
| LT1395 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Single/Dual/Quad 400MHz Current Feedback Amplifier |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。