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| 型号： | AD8605ART-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP R-R CMOS LN SOT23-5 |
| 标准包装： | 1 |
| 系列： | DigiTrim® |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 5 V/µs |
| 增益带宽积： | 10MHz |
| 电流 - 输入偏压： | 0.2pA |
| 电压 - 输入偏移： | 80µV |
| 电流 - 电源： | 1mA |
| 电流 - 输出 / 通道： | 80mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 5.5 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 |
| 其它名称： | AD8605ART-REEL7DKR |
Data Sheet
AD8605/AD8606/AD8608
Rev. N | Page 19 of 24
I-V CONVERSION APPLICATIONS
PHOTODIODE PREAMPLIFIER APPLICATIONS
The low offset voltage and input current of the AD8605 make
it an excellent choice for photodiode applications. In addition,
the low voltage and current noise make the amplifier ideal for
application circuits with high sensitivity.
RD
ID
CD
50pF
AD8605
VOUT
PHOTODIODE
VOS
RF
10M
CF
10pF
02731-
051
Figure 52. Equivalent Circuit for Photodiode Preamp
The input bias current of the amplifier contributes an error
term that is proportional to the value of RF.
The offset voltage causes a dark current induced by the shunt
resistance of the Diode RD. These error terms are combined at
the output of the amplifier. The error voltage is written as
B
F
D
F
OS
O
I
R
V
E
+
+
=
1
Typically, RF is smaller than RD, thus RF/RD can be ignored.
At room temperature, the AD8605 has an input bias current of
0.2 pA and an offset voltage of 100 V. Typical values of RD are
in the range of 1 G.
For the circuit shown in Figure 52, the output error voltage is
approximately 100 V at room temperature, increasing to about
1 mV at 85°C.
The maximum achievable signal bandwidth is
F
t
MAX
C
R
f
π
2
=
where ft is the unity gain frequency of the amplifier.
AUDIO AND PDA APPLICATIONS
The low distortion and wide dynamic range of the AD860x
make it a great choice for audio and PDA applications,
including microphone amplification and line output buffering.
Figure 53 shows a typical application circuit for headphone/
line-out amplification.
R1 and R2 are used to bias the input voltage at half the supply,
which maximizes the signal bandwidth range. C1 and C2 are
used to ac couple the input signal. C1, R1, and R2 form a high-
pass filter whose corner frequency is 1/[2π(R1||R2)C1].
The high output current of the AD8606 allows it to drive heavy
resistive loads.
The circuit in Figure 53 is tested to drive a 16 headphone. The
THD + N is maintained at approximately 60 dB throughout the
audio range.
5V
4
2
3
8
1
HEADPHONES
5V
4
6
5
8
7
C1
1F
V1
500mV
1/2
AD8606
C3
100F
1/2
AD8606
C4
100F
C2
1F
V2
500mV
02731-
052
R1
20k
R2
20k
R7
20k
R8
20k
R4
20
R3
1k
R6
20
R5
1k
Figure 53. Single-Supply Headphone/Speaker Amplifier
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8605ARTZ | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision, Low Noise, CMOS, Rail-to-Rail, Input/Output Operational Amplifiers |
| AD8605ARTZ-R2 | 功能描述:IC OPAMP GP R-R CMOS LN SOT23-5 RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:DigiTrim® 标准包装:2,500 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:0.11 V/µs 增益带宽积:350kHz -3db带宽:- 电流 - 输入偏压:4nA 电压 - 输入偏移:20µV 电流 - 电源:260µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):2.7 V ~ 36 V，±1.35 V ~ 18 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:带卷 (TR) |
| AD8605ARTZ-R2 | 制造商:Analog Devices 功能描述:IC OP AMP SINGLE 10MHZ 5SOT23 |
| AD8605ARTZ-REE | 制造商:Analog Devices 功能描述: |
| AD8605ARTZ-REEL | 功能描述:IC OPAMP GP R-R CMOS LN SOT23-5 RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:DigiTrim® 标准包装:160 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:10 V/µs 增益带宽积:9MHz -3db带宽:- 电流 - 输入偏压:1pA 电压 - 输入偏移:250µV 电流 - 电源:730µA 电流 - 输出 / 通道:28mA 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 |
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