参数资料
| 型号： | AD8031AR |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP VF R-R LP LDIST 8SOIC |
| 设计资源： | 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) |
| 标准包装： | 98 |
| 放大器类型： | 电压反馈 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 35 V/µs |
| -3db带宽： | 80MHz |
| 电流 - 输入偏压： | 450nA |
| 电压 - 输入偏移： | 1000µV |
| 电流 - 电源： | 900µA |
| 电流 - 输出 / 通道： | 15mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 12 V，±1.35 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
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.
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8031AR-EBZ | 功能描述:BOARD EVAL FOR AD8031AR RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| AD8031AR-REEL | 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R I/O 制造商:Rochester Electronics LLC 功能描述:SOIC SINGLE LOW POWER OP AMP - Tape and Reel |
| AD8031AR-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R I/O 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R I/O ±6V/12V 8-Pin SOIC N T/R |
| AD8031ART | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Feedback Operational Amplifier |
| AD8031ART-EBZ | 功能描述:BOARD EVAL FOR AD8031ART RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
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