參數(shù)資料
型號(hào)： LT1806CS6
元件分類(lèi)： 運(yùn)算放大器
英文描述： Voltage-Feedback Operational Amplifier
中文描述： 電壓反饋運(yùn)算放大器
文件頁(yè)數(shù)： 20/24頁(yè)
文件大?。?/td> 314K
代理商： LT1806CS6
LT1806/LT1807
20
1MHz Series Resonant Crystal Oscillator with Square
and Sinusoid Outputs
Figure 8 shows a classic 1MHz series resonant crystal
oscillator. At series resonance, the crystal is a low imped-
ance and the positive feedback connection is what brings
about oscillation at the series resonance frequency. The
RC feedback around the other path ensures that the circuit
does not find a stable DC operating point and refuse to
oscillate. The comparator output is a 1MHz square wave
with a measured jitter of 28ps
RMS
with a 5V supply and
40ps
RMS
with a 3V supply. On the other side of the crystal,
however, is an excellent looking sine wave except for the
fact of the small high frequency glitch caused by the fast
TYPICAL APPLICATIO S
edge and the crystal capacitance (middle trace of Fig-
ure9). Sinusoid amplitude stability is maintained by the
fact that the sine wave is basically a filtered version of the
square wave; the usual amplitude control loops associ-
ated with sinusoidal oscillators are not immediately nec-
essary.
1
One can make use of this sine wave by buffering
and filtering it, and this is the combined task of the LT1806.
It is configured as a bandpass filter with a Q of 5 and does
a good job of cleaning up and buffering the sine wave.
Distortion was measured at –70dBc and –60dBc on the
second and third harmonics.
1
Amplitude will be a linear function of comparator output swing, which is supply dependent and
therefore controllable. The important difference here is that any added amplitude stabilization loop
will not be faced with the classical task of avoiding regions of nonoscillation versus clipping.
–
+
8
SQUARE WAVE
V
S
V
S
V
S
1
7
4
5
R3
1k
R4
210
R1
1k
R8
2k
R9
2k
R5
6.49k
1k
R7
15.8k
R2
1k
1MHZ
AT-CUT
C1
0.1
μ
F
6
3
2
C2
0.1
μ
F
C4
100pF
C3
100pF
LT1713
LE
–
+
V
S
7
6
1 (NC)
4
18067 F08
V
S
= 2.7V TO 6V
3
2
LT1806
R6
162
100pF
SINE WAVE
Figure 8. LT1713 Comparator is Configured as a Series Resonant Crystal Oscillator.
The LT1806 Op Amp is Configured in a Q = 5 Bandpass Filter with f
C
= 1MHz
3V/DIV
1V/DIV
1V/DIV
200ns/DIV
1806 F09
Figure 9. Oscillator Waveforms with V
S
= 3V. Top Trace is Comparator Output.
Middle Trace is Crystal Feedback to Pin 2 at LT1713. Bottom Trace is Buffered,
Inverted and Bandpass Filtered with a Q of 5 by the LT1806
相關(guān)PDF資料
PDF描述
LT1806IS6 Voltage-Feedback Operational Amplifier
LT1807CMS8 Voltage-Feedback Operational Amplifier
LT1807CS8 Voltage-Feedback Operational Amplifier
LT1807IMS8 Voltage-Feedback Operational Amplifier
LT1807IS8 Voltage-Feedback Operational Amplifier
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1806CS6#PBF 制造商:Linear Technology 功能描述:OP Amp Single GP R-R I/O 6.3V/12.6V 6-Pin TSOT-23 制造商:Linear Technology 功能描述:OP AMP RRIO 12.6VIN 325MHZ 6TSOT23 制造商:Linear Technology 功能描述:OP AMP, RRIO, 12.6VIN, 325MHZ, 6TSOT23 制造商:Linear Technology 功能描述:SC-Amps/High Speed, Cut Tape R2R In/Out L/Noise HSOA 制造商:Linear Technology 功能描述:IC, OP-AMP, 325MHZ, 125V/ us, TSOT-23-6, Op Amp Type:Low Noise, No. of Amplifiers:1, Slew Rate:125V/s, Supply Voltage Range:2.5V to 12.6V, Amplifier Case Style:TSOT-23, No. of Pins:6, Bandwidth:325MHz, Operating Temperature Max:85C, RoHS Compliant: Yes
LT1806CS6#PBF 制造商:Linear Technology 功能描述:IC OP-AMP 325MHZ 125V/ TSOT-23-6 制造商:Linear Technology 功能描述:IC, OP-AMP, 325MHZ, 125V/s, TSOT-23-6
LT1806CS6#TR 功能描述:IC OPAMP R-R IN/OUT SGL SOT23-6 RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類(lèi)型:通用 電路數(shù):2 輸出類(lèi)型:滿(mǎn)擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
LT1806CS6#TRM 功能描述:IC OPAMP R-R IN/OUT SGL SOT23-6 RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類(lèi)型:通用 電路數(shù):2 輸出類(lèi)型:滿(mǎn)擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
LT1806CS6#TRMPBF 功能描述:IC OPAMP R-R IN/OUT SGL SOT23-6 RoHS:是 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 放大器類(lèi)型:通用 電路數(shù):1 輸出類(lèi)型:- 轉(zhuǎn)換速率:0.2 V/µs 增益帶寬積:- -3db帶寬:- 電流 - 輸入偏壓:100pA 電壓 - 輸入偏移:30µV 電流 - 電源:380µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):±2 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SO 包裝:管件
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*