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參數(shù)資料
| 型號： | LT1469 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual 90MHz, 22V/us 16-Bit Accurate Operational Amplifier |
| 中文描述： | 雙90MHz的，22V/us 16位精度運(yùn)算放大器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 179K |
| 代理商： | LT1469 |
LT1469
8
Capacitive Loading
The LT1469 drives capacitive loads of up to 100pF in unity-
gain and 300pF in a gain of –1. When there is a need to
drive a larger capacitive load, a small series resistor
should be inserted between the output and the load. In
addition, a capacitor should be added between the output
and the inverting input as shown in Figure 3.
Settling Time
The LT1469 is a single stage amplifier with an optimal
thermal layout that leads to outstanding settling perfor-
mance. Measuring settling, even at the 12-bit level is very
challenging, and at the 16-bit level requires a great deal of
subtlety and expertise. Fortunately, there are two excellent
Linear Technology reference sources for settling mea-
surements—Application Notes 47 and 74. Appendix B of
AN47 is a vital primer on 12-bit settling measurements
and AN74 extends the state-of-the-art while concentrating
on settling time with a 16-bit current output DAC input.
The settling of the DAC I-to-V converter on the back page
was measured using the exact methods of AN74. The
optimum nulling of the DAC output capacitance requires
20pF across the 6k feedback resistor. The theoretical limit
for 16-bit settling is 11.1 times this RC time constant or
1.33
μ
s. The actual settling time is 1.7
μ
s at the output of the
LT1469. The LT1469 is the fastest Linear Technology
amplifier in this application.
The RC output noise filter adds a slight settling time delay
of 100ns but reduces the noise bandwidth to 1.6MHz
which increases the output resolution for 16-bit accuracy.
+
–
V
OUT
C
L
R
F
R
O
≥
(1 + R
F
/R
G
)/(2
π
C
L
5MHz)
R
F
≥
10R
O
C
F
= (2R
O
/R
F
)C
L
C
F
1/2 LT1469
V
IN
1469 F03
R
G
R
O
Figure 3. Driving Capacitive Loads
APPLICATIU
W
U
U
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1469_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 90MHz, 22V/μs 16-Bit Accurate Operational Amplifi er |
| LT1469-2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 200MHz, 30V/μs 16-Bit Accurate AV ≥ 2 Op Amp |
| LT1469ACDF#PBF | 功能描述:IC OPAMP 16BIT DUAL 90MHZ 12-DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型: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-SOIC 包裝:帶卷 (TR) |
| LT1469ACDF#TRPBF | 功能描述:IC OPAMP 16BIT DUAL 90MHZ 12-DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型: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-SOIC 包裝:帶卷 (TR) |
| LT1469ACDF-2#PBF | 功能描述:IC OPAMP 16BIT DUAL 200MHZ 12DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型: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-SOIC 包裝:帶卷 (TR) |
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