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| 型号： | AD8515ARTZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP GP R-R CMOS 5MHZ SOT23-5 |
| 设计资源： | Extending the Capacitive Input Range of AD7745/AD7746 (CN0129) |
| 标准包装： | 1 |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 2.7 V/µs |
| 增益带宽积： | 5MHz |
| 电流 - 输入偏压： | 5pA |
| 电压 - 输入偏移： | 1000µV |
| 电流 - 电源： | 410µA |
| 电流 - 输出 / 通道： | 20mA |
| 电压 - 电源，单路/双路(±)： | 1.8 V ~ 5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 766 (CN2011-ZH PDF) |
| 其它名称： | AD8515ARTZREEL7DKR |
AD8515
Rev. D | Page 13 of 16
DRIVING CAPACITIVE LOADS
Most amplifiers have difficulty driving large capacitive loads.
Additionally, higher capacitance at the output can increase the
amount of overshoot and ringing in the amplifier’s step response
and can even affect the stability of the device. This is due to the
degradation of phase margin caused by additional phase lag from
the capacitive load. The value of capacitive load that an amplifier
can drive before oscillation varies with gain, supply voltage, input
signal, temperature, and other parameters. Unity gain is the most
challenging configuration for driving capacitive loads. The AD8515
is capable of driving large capacitive loads without any external
amplifier’s capacitive load driving capability when configured
in unity gain of +1.
The AD8515 is even capable of driving higher capacitive loads
in inverting gain of 1, as shown in Figure 33.
03
02
4-
03
1
V
O
L
T
A
G
E
(
10
0m
V/
D
IV)
TIME (1s/DIV)
VS = ±2.5V
CL = 50pF
GAIN = 1
Figure 31. Capacitive Load Driving @ CL = 50 pF
03
02
4-
03
2
VO
L
T
A
G
E
(
10
m
V/
D
IV
)
TIME (1s/DIV)
VS = ±2.5V
CL = 500pF
GAIN = 1
Figure 32. Capacitive Load Driving @ CL = 500 pF
03
02
4-
03
3
V
O
L
T
A
G
E
(
10
0m
V/
D
IV)
TIME (1s/DIV)
VS = ±0.9V
CL = 800pF
GAIN = –1
Figure 33. Capacitive Load Driving @ CL = 800 pF
FULL POWER BANDWIDTH
The slew rate of an amplifier determines the maximum frequency
at which it can respond to a large input signal. This frequency
(known as full power bandwidth, FPBW) can be calculated from
the equation
PEAK
V
SR
FPBW
×
π
=
2
for a given distortion. The FPBW of the AD8515 is shown in
Figure 34 to be close to 200 kHz.
03
02
4-
03
4
VO
L
T
A
G
E
(2V/
D
IV
)
TIME (2s/DIV)
VIN
VOUT
Figure 34. Full Power Bandwidth
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8517 | 制造商:AD 制造商全称:Analog Devices 功能描述:7 MHz Rail-to-Rail Low Voltage Operational Amplifiers |
| AD8517ART-R2 | 制造商:Analog Devices 功能描述:OP Amp Single GP R-R I/O 6V 5-Pin SOT-23 T/R 制造商:Rochester Electronics LLC 功能描述:SINGLE, LOW PWR RAIL/RAIL OP AMP - Bulk |
| AD8517ART-REEL | 制造商:AD 制造商全称:Analog Devices 功能描述:7 MHz Rail-to-Rail Low Voltage Operational Amplifiers |
| AD8517ART-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Single GP R-R I/O 6V 5-Pin SOT-23 T/R 制造商:Rochester Electronics LLC 功能描述:SINGLE, LOW PWR RAIL/RAIL OP AMP - Tape and Reel |
| AD8517ARTZ-R2 | 制造商:Analog Devices 功能描述:OP Amp Single GP R-R I/O 6V 5-Pin SOT-23 T/R |
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