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參數(shù)資料
| 型號： | AD8616 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Precision 20 MHz CMOS Rail-to-Rail Input/Output Operational Amplifiers |
| 中文描述： | 精密20兆赫的CMOS軌到軌輸入/輸出運算放大器 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大小： | 495K |
| 代理商： | AD8616 |
AD8616/AD8618
HIGH SPEED PHOTODIODE PREAMPLIFIER
The AD8616/AD8618 are excellent choices for I-to-V
conversions. The very low input bias, low current noise, and
high unity gain bandwidth of the parts make them suitable,
especially for high speed photodiode preamps.
Rev. A | Page 14 of 16
In high speed photodiode applications, the diode is operated in
a photoconductive mode (reverse biased). This lowers the
junction capacitance at the expense of an increase in the
amount of dark current that flows out of the diode.
The total input capacitance, C1, is the sum of the diode
capacitance and that of the op amp. This creates a feedback pole
and causes degradation of the phase margin, making the op
amp unstable. It is therefore necessary to use a capacitor in the
feedback to compensate for this pole.
To get the maximum signal bandwidth, select
U
f
2
R
1
C
2
C
π
=
2
where
f
U
is the unity gain bandwidth of the amplifier.
V–
–2.5V
V+
+2.5V
R2
C2
C
IN
C
D
R
SH
I
D
–V
BIAS
0
–
+
Figure 46. High Speed Photodiode Preamplifier
ACTIVE FILTERS
The low input bias current and high unity gain bandwidth of
the AD8616 make it an excellent choice for precision filter
design.
Figure 47 shows the implementation of a second-order low-pass
filter. The Butterworth response has a corner frequency of
100 kHz and a phase shift of 90°. The frequency response is
shown in Figure 48.
V–
V
EE
V+
V
CC
2nF
1nF
1.1k
1.1k
V
IN
0
Figure 47. Second-Order Low-Pass Filter
–40
–30
–20
–10
0
10
G
1
0.1
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
0
Figure 48. Second-Order Butterworth Low-Pass Filter Frequency Response
POWER DISSIPATION
Although the AD8616/AD8618 are capable of providing load
currents to 150 mA, the usable output load current drive
capability is limited to the maximum power dissipation allowed
by the device package used. In any application, the absolute
maximum junction temperature for the AD8616/AD8618 is
150°C; this should never be exceeded because the device could
suffer premature failure. Accurately measuring power dissipa-
tion of an integrated circuit is not always a straightforward
exercise; Figure 49 has been provided as a design aid for setting
a safe output current drive level or selecting a heat sink for the
package options available on the AD8616.
P
TEMPERATURE (
°
C)
0
0
0.5
1.0
1.5
20
40
60
80
120
100
140
0
SOIC
MSOP
Figure 49. Maximum Power Dissipation vs. Ambient Temperature
相關PDF資料 |
PDF描述 |
|---|---|
| AD8616AR | Precision 20 MHz CMOS Rail-to-Rail Input/Output Operational Amplifiers |
| AD8616ARM | Precision 20 MHz CMOS Rail-to-Rail Input/Output Operational Amplifiers |
| AD8620BR-REEL | Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifier |
| AD8620BR-REEL7 | Toggle Switch; Circuitry:SPDT; Switch Operation:On-Off-On; Contact Current Max:6A; Actuator Style:Bat; Switch Terminals:Through Hole; Current Rating:3A; Leaded Process Compatible:Yes; Mounting Type:PCB; Features:Short Actuator RoHS Compliant: Yes |
| AD8620BR | Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifier |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD8616AR | 功能描述:IC OPAMP GP R-R CMOS 24MHZ 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:DigiTrim® 標準包裝:100 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:- 轉換速率:0.2 V/µs 增益帶寬積:- -3db帶寬:- 電流 - 輸入偏壓:100pA 電壓 - 輸入偏移:30µV 電流 - 電源:380µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):±2 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SO 包裝:管件 |
| AD8616ARM | 制造商:Analog Devices 功能描述:OP AMP DUAL GP R-R I/O 5V 8MSOP - Bulk |
| AD8616ARM-R2 | 制造商:Analog Devices 功能描述:OP Amp Dual GP R-R I/O 5V 8-Pin MSOP T/R 制造商:Rochester Electronics LLC 功能描述:DUAL, PRECISION CMOS RAIL-RAIL OP AMP - Bulk 制造商:Analog Devices 功能描述:IC OP-AMP DUAL R/R |
| AD8616ARM-REEL | 制造商:Analog Devices 功能描述:OP Amp Dual GP R-R I/O 5V 8-Pin MSOP T/R |
| AD8616ARMZ | 功能描述:IC OPAMP GP R-R CMOS 24MHZ 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:DigiTrim® 標準包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 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:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
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