参数资料
| 型号： | AD8014AR |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/11页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP CF LP LN LDIST 8SOIC |
| 标准包装： | 98 |
| 放大器类型： | 电流反馈 |
| 电路数： | 1 |
| 转换速率： | 4600 V/µs |
| -3db带宽： | 480MHz |
| 电流 - 输入偏压： | 5µA |
| 电压 - 输入偏移： | 2000µV |
| 电流 - 电源： | 1.15mA |
| 电流 - 输出 / 通道： | 50mA |
| 电压 - 电源，单路/双路(±)： | 4.5 V ~ 12 V，±2.25 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-SOIC |
| 包装： | 管件 |
AD8014
–8–
Note: On Figures 19 and 20 RF = 500
, R
S = 50
and C
L =
20 pF.
APPLICATIONS
CD ROM and DVD Photodiode Preamp
High speed Multi-X CD ROM and DVD drives require high
frequency photodiode preamps for their read channels. To mini-
mize the effects of the photodiode capacitance, the low imped-
ance of the inverting input of a current feedback amplifier is
advantageous. Good group delay characteristics will preserve the
pulse response of these pulses. The AD8014, having many ad-
vantages, can make an excellent low cost, low noise, low power,
and high bandwidth photodiode preamp for these applications.
Figure 21 shows the circuit that was used to imitate a photo-
diode preamp. A photodiode for this application is basically a
high impedance current source that is shunted by a small ca-
pacitance. In this case, a high voltage pulse from a Picosecond
Pulse Labs Generator that is ac-coupled through a 20 k
resis-
tor is used to simulate the high impedance current source of a
photodiode. This circuit will convert the input voltage pulse into
a small charge package that is converted back to a voltage by the
AD8014 and the feedback resistor.
In this case the feedback resistor chosen was 1.74 k
, which is a
compromise between maintaining bandwidth and providing
sufficient gain in the preamp stage. The circuit preserves the
pulse shape very well with very fast rise time and a minimum of
overshoot as shown in Figure 22.
AD8014
1.74k
20k
49.9
+5V
–5V
OUTPUT
(10 PROBE)
(NO LOAD)
0.1 F
INPUT
Figure 21. AD8014 as a Photodiode Preamp
INPUT
DIV
1
2
OUTPUT
500mV/DIV
CH1 20.0V
CH2 500mV M 25.0ns CH4 380mV
TEK RUN: 2.0GS/s ET AVERAGE
T[
]
Figure 22. Pulse Response
Figure 19. Large Signal Step Response; VS = ±5 V,
VO = 4 V Step
Figure 20. Large Signal Step Response; VS = +5 V,
VO = 2 V Step
Rev. C
20V/
相关PDF资料 |
PDF描述 |
|---|---|
| AD8015AR | IC AMP TRANSIMPEDANCE 8-SOIC |
| AD8017ARZ-REEL | IC AMP GP DUAL LP LDIST 8SOIC |
| AD8021AR | IC OPAMP VF LN LP LDIST 8SOIC |
| AD8022ARZ-REEL7 | IC OPAMP VF DUAL LN LP 8SOIC |
| AD8024ARZ-REEL7 | IC OPAMP CF QUAD LP 50MA 16SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8014AR-EBZ | 功能描述:BOARD EVAL FOR AD8014AR 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:- |
| AD8014AR-REEL | 制造商:Analog Devices 功能描述:OP Amp Single Current Fdbk 制造商:Rochester Electronics LLC 功能描述:SOIC LO-COST LO PWR CURRENT-FEEDBACK AMP - Tape and Reel |
| AD8014AR-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Single Current Fdbk ±6V/12V 8-Pin SOIC N T/R |
| AD8014ART | 制造商:AD 制造商全称:Analog Devices 功能描述:400 MHz Low Power High Performance Amplifier |
| AD8014ART-EBZ | 功能描述:BOARD EVAL FOR AD8014ART 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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