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參數(shù)資料
| 型號： | ACF2101BU |
| 英文描述： | Low Noise, Dual SWITCHED INTEGRATOR |
| 中文描述： | 低噪聲，雙交換式積分器 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大小： | 192K |
| 代理商： | ACF2101BU |
ACF2101
13
FIGURE 11. Timing Generator.
VOLTAGE INPUT EXAMPLE
Figure 12 illustrates the use of the ACF2101 with a voltage
input. This approach is useful in applications where a con-
stant current source is needed. For example, the ACF2101
can be configured in a bipolar mode by using the current
generated by a voltage reference as an offset current. In the
example in Figure 12, a 10V reference (REF102) is used in
series with a 400k
resistor to generate a constant +25
μ
A
input current to the ACF2101. The ACF2101 will operate as
expected in this configuration except in the Hold mode.
When the Hold switch is opened, the input to the ACF2101
becomes high impedance and consequently the Sw In node
will try to go to 10V. The Hold switch is specified to have
a withstand voltage of +0.5V. When the voltage at the Sw In
node exceeds +0.5V the Hold switch will begin to conduct
again. This will not cause damage to the switch, however,
the output will start to unexpectedly integrate again. The
addition of either C
1
or D
1
in the circuit is critical for proper
Hold mode operation. C
1
will divert the charge being gener-
ated by the voltage source in series with the resistor. C
1
is
selected so that the maximum voltage does not exceed 0.4V.
When the Hold switch is closed again, the charge collected
by C
1
is transferred to the integration capacitor. D
1
will
divert the charge being generated by the voltage source and
resistor to ground. When the Hold switch closes again, the
charge stored on the parasitic capacitor of the diode is
transferred to the integration capacitor. D
1
should be se-
lected so that the on voltage of the diode does not exceed
0.4V.
DEMONSTRATION BOARD AND MACROMODEL
Demonstration boards are available to speed prototyping.
The demonstration board, DEM-ACF2101BP-C includes a
programmable timing generator making it easy to do a quick
evaluation.
A Spice-based macromodel is also available. Request
AB-020 for Application Bulletin and Burr-Brown's Spice
Macromodel diskette.
100pF
14
4
10
7
5
9
8
4
1
3
6
8
1
2
13
12
2
7
6
Hold
54.5k
54.5k
10k
100pF
100pF
1000pF
1000pF
fs
10k
164k
+V
S
Reset
Select
556
Dual Timer
555
Timer
+15V
Both approximately 6
μ
s
Approximately 18
μ
s
1N914
20k
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ACF2101BU | 制造商:Texas Instruments 功能描述:IC OP-AMP SW INT 2MHZ DUAL 24SOIC 制造商:Texas Instruments 功能描述:IC, OP-AMP SW INT 2MHZ DUAL 24SOIC 制造商:Texas Instruments 功能描述:IC, OP-AMP SW INT 2MHZ DUAL 24SOIC; Op Amp Type:Low Noise; No. of Amplifiers:2; Slew Rate:3V/s; Supply Voltage Range:4.5V to 18V, -10V to -18V; Amplifier Case Style:SOIC; No. of Pins:24; Bandwidth:2MHz; Operating Temperature ;RoHS Compliant: Yes |
| ACF2101BU | 制造商:Texas Instruments 功能描述:LOW NOISE DUAL SWITCHED INTEGRATOR INTE |
| ACF2101BU/1K | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low Noise Dual Swtc Integrator RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| ACF2101BU/1KE4 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low Noise Dual Swtc Integrator RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| ACF2101BU/1KG4 | 功能描述:IC OPAMP SW INTEG 2MHZ 24SOIC 制造商:texas instruments 系列:Difet? 包裝:帶卷（TR） 零件狀態(tài):停產(chǎn) 放大器類型:交換集成器 電路數(shù):2 輸出類型:- 壓擺率:3 V/μs 增益帶寬積:2MHz 電流 - 輸入偏置:0.1pA 電壓 - 輸入失調(diào):500μV 電流 - 電源:12mA 電流 - 輸出/通道:25mA 電壓 - 電源，單/雙（±）:4.5 V ~ 18 V，-10 V ~ -18 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商器件封裝:24-SOIC 基本零件編號:ACF2101 標(biāo)準(zhǔn)包裝:1,000 |
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