參數(shù)資料
型號(hào)： AD8031BRZ-REEL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 7/20頁(yè)
文件大?。?/td> 0K
描述： IC OPAMP VF R-R LP LDIST 8SOIC
設(shè)計(jì)資源： High Speed, Precision, Differential AC-Coupled Drive Circuit for AD7625 (CN0080)
Single-Ended-to-Differential High Speed Drive Circuit for 16-Bit, 10 MSPS AD7626 ADC (CN0105)
標(biāo)準(zhǔn)包裝： 750
放大器類型： 電壓反饋
電路數(shù)： 1
輸出類型： 滿擺幅
轉(zhuǎn)換速率： 35 V/µs
-3db帶寬： 80MHz
電流 - 輸入偏壓： 450nA
電壓 - 輸入偏移： 500µV
電流 - 電源： 900µA
電流 - 輸出 / 通道： 15mA
電壓 - 電源，單路/雙路(±)： 2.7 V ~ 12 V，±1.35 V ~ 6 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-SO
包裝： 帶卷 (TR)
Data Sheet
AD8031/AD8032
Rev. G | Page 15 of 20
DRIVING CAPACITIVE LOADS
Capacitive loads interact with an op amp’s output impedance to
create an extra delay in the feedback path. This reduces circuit
stability and can cause unwanted ringing and oscillation. A
given value of capacitance causes much less ringing when the
amplifier is used with a higher noise gain.
The capacitive load drive of the AD8031/AD8032 can be
increased by adding a low valued resistor in series with the
capacitive load. Introducing a series resistor tends to isolate the
capacitive load from the feedback loop, thereby diminishing its
influence. Figure 46 shows the effects of a series resistor on the
capacitive drive for varying voltage gains. As the closed-loop
gain is increased, the larger phase margin allows for larger
capacitive loads with less overshoot. Adding a series resistor at
lower closed-loop gains accomplishes the same effect. For large
capacitive loads, the frequency response of the amplifier is
dominated by the roll-off of the series resistor and capacitive load.
1000
10
100
C
A
P
A
C
ITIV
E
LOA
D
(
pF)
CLOSED-LOOP GAIN (V/V)
1
0
1
2
3
4
5
RS = 5
RS = 0
RS = 20
RS = 0, 5
VS = 5V
200mV STEP
WITH 30% OVERSHOOT
RG
RF
RS
CL
VOUT
01056-
046
Figure 46. Capacitive Load Drive vs. Closed-Loop Gain
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD8032 制造商:AD 制造商全稱:Analog Devices 功能描述:2.7 V, 800 uA, 80 MHz Rail-to-Rail I/O Amplifiers
AD803-20BR 制造商:Rochester Electronics LLC 功能描述:- Bulk
AD8032A 制造商:AD 制造商全稱:Analog Devices 功能描述:2.7 V, 800 uA, 80 MHz Rail-to-Rail I/O Amplifiers
AD8032AN 制造商:Analog Devices 功能描述:OP Amp Dual Volt Fdbk R-R I/O ±6V/12V 8-Pin PDIP 制造商:Rochester Electronics LLC 功能描述:PDIP DUAL LOW POWER OP AMP - Bulk 制造商:Analog Devices 功能描述:AMP DUAL LOW POWER RRI/O 8032 DIP
AD8032AN 制造商:Analog Devices 功能描述:SEMICONDUCTORSLINEAR
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