參數(shù)資料
型號: AD8609ARUZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 5/16頁
文件大小: 0K
描述: IC OPAMP GP R-R CMOS 14TSSOP
標準包裝: 2,500
放大器類型: 通用
電路數(shù): 4
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 0.1 V/µs
增益帶寬積: 400kHz
電流 - 輸入偏壓: 0.2pA
電壓 - 輸入偏移: 12µV
電流 - 電源: 40µA
電流 - 輸出 / 通道: 70mA
電壓 - 電源,單路/雙路(±): 1.8 V ~ 5 V,±0.9 V ~ 2.5 V
工作溫度: -40°C ~ 125°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: 帶卷 (TR)
AD8603/AD8607/AD8609
Rev. C | Page 13 of 16
PROXIMITY SENSORS
Proximity sensors can be capacitive or inductive and are used in
a variety of applications. One of the most common applications
is liquid level sensing in tanks. This is particularly popular in
pharmaceutical environments where a tank must know when to
stop filling or mixing a given liquid. In aerospace applications,
these sensors detect the level of oxygen used to propel engines.
Whether in a combustible environment or not, capacitive
sensors generally use low voltage. The precision and low voltage
of the AD8603/AD8607/AD8609 make the parts an excellent
choice for such applications.
COMPOSITE AMPLIFIERS
A composite amplifier can provide a very high gain in applications
where high closed-loop dc gains are needed. The high gain
achieved by the composite amplifier comes at the expense of a
loss in phase margin. Placing a small capacitor, CF, in the feedback
in parallel with R2 (see Figure 45) improves the phase margin.
Picking CF = 50 pF yields a phase margin of about 45° for the
values shown in Figure 45.
VEE
VCC
R1
CF
1k
VCC
VEE
VIN
99k
R2
AD8603
AD8541
V+
V
V+
V
R3
R4
99k
1k
U5
04
35
6-
04
5
Figure 45. High Gain Composite Amplifier
A composite amplifier can be used to optimize dc and ac
characteristics. Figure 46 shows an example using the AD8603
and the AD8541. This circuit offers many advantages. The band-
width is increased substantially, and the input offset voltage and
noise of the AD8541 become insignificant because they are divided
by the high gain of the AD8603.
The circuit in Figure 46 offers high bandwidth (nearly double
that of the AD8603), high output current, and very low power
consumption of less than 100 μA.
R1
1k
V+
V
VIN
100k
R2
AD8541
100
C3
1k
R4
R3
C2
VCC
VEE
04
35
6-
04
6
VCC
VEE
V–
V+
AD8603
Figure 46. Low Power Composite Amplifier
BATTERY-POWERED APPLICATIONS
The AD8603/AD8607/AD8609 are ideal for battery-powered
applications. The parts are tested at 5 V, 3.3 V, 2.7 V, and 1.8 V
and are suitable for various applications whether in single or
dual supply.
In addition to their low offset voltage and low input bias, the
AD8603/AD8607/AD8609 have a very low supply current of
40 μA, making the parts an excellent choice for portable electronics.
The TSOT package allows the AD8603 to be used on smaller
board spaces.
PHOTODIODES
Photodiodes have a wide range of applications from barcode
scanners to precision light meters and CAT scanners. The very
low noise and low input bias current of the AD8603/AD8607/
AD8609 make the parts very attractive amplifiers for I-V
conversion applications.
Figure 47 shows a simple photodiode circuit. The feedback
capacitor helps the circuit maintain stability. The signal band-
width can be increased at the expense of an increase in the total
noise; a low-pass filter can be implemented by a simple RC network
at the output to reduce the noise. The signal bandwidth can be
calculated by πR2C2, and the closed-loop bandwidth is the
intersection point of the open-loop gain and the noise gain.
The circuit shown in Figure 47 has a closed-loop bandwidth of
58 kHz and a signal bandwidth of 16 Hz. Increasing C2 to 50 pF
yields a closed-loop bandwidth of 65 kHz, but only 3.2 Hz of
signal bandwidth can be achieved.
C2
10pF
R2
1000M
R1
1000M
VCC
VEE
V–
V+
AD8603
C1
10pF
04
35
6-
04
7
Figure 47. Photodiode Circuit
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AD8609ARUZ-REEL1 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision Micropower, Low Noise CMOS, Rail-to-Rail Input/Output Operational Amplifiers
AD8609ARZ 功能描述:IC OPAMP GP R-R CMOS QUAD 14SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1 系列:MicroAmplifier™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:5pA 電壓 - 輸入偏移:1500µV 電流 - 電源:220µA 電流 - 輸出 / 通道:60mA 電壓 - 電源,單路/雙路(±):4.5 V ~ 36 V,±2.25 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC(0.154",3.90mm 寬) 供應商設備封裝:14-SOIC 包裝:剪切帶 (CT) 其它名稱:296-29363-1
AD8609ARZ 制造商:Analog Devices 功能描述:OP AMP QUAD PRECISION RRI/O 8609
AD8609ARZ1 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision Micropower, Low Noise CMOS, Rail-to-Rail Input/Output Operational Amplifiers
AD8609ARZ-REEL 功能描述:IC OPAMP GP R-R CMOS QUAD 14SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:50 系列:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源,單路/雙路(±):1.8 V ~ 5.25 V,±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應商設備封裝:10-MSOP 包裝:管件