Datasheet Texas Instruments ACF2101BUE4 — Datenblatt

Geräuscharmer, zweifach geschalteter Integrator 24-SOIC -40 bis 125

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PDF, 249 Kb, Datei veröffentlicht: Sep 27, 2000

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Lifecycle Status	Active (Recommended for new designs)
Manufacture's Sample Availability	No

Additional Features	N/A
Architecture	N/A
GBW(Typ)	2 MHz
Input Bias Current(Max)	1 pA
Iq per channel(Max)	15.5 mA
Iq per channel(Typ)	15.5 mA
Number of Channels	2
Offset Drift(Typ)	5 uV/C
Operating Temperature Range	-40 to 125 C
Output Current(Typ)	25 mA
Package Group	SOIC
Package Size: mm2:W x L	24SOIC: 160 mm2: 10.3 x 15.5(SOIC) PKG
Rail-to-Rail	No
Rating	Catalog
Slew Rate(Typ)	3 V/us
Total Supply Voltage(Max)	36 +5V=5, +/-5V=10
Total Supply Voltage(Min)	14.5 +5V=5, +/-5V=10
Vos (Offset Voltage @ 25C)(Max)	2 mV

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Improved Noise Performance of the ACF2101 Switched Integrator
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The signal-to-noise ratio and bandwidth of the combination of the ACF2101 dual, switched integrator and a low-level input current is exceptional when compared to the performance of a classical transimpedance amplifier. To further improve the ACF2101 signal-to-noise ratio, a resistor can be added in series with the input sensor.
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The ACF2101 Used as a Bipolar Switched Integrator
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The ACF2101 is a dual, switched integrator that is typically used to convert a positive input current to a negative output voltage by integration, using an integration capacitor (CINT), either on the chip or an external capacitor provided by the user. Typical applications for the ACF2101 are photo diode integrators, current measurements, charge measurements, and a CT scanner front end.
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Comparison of Noise Performance of FET Transimpedence Amp/Switched Integrator
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Low-input current FET operational amplifiers are universlly used to monitor photodetector, or more commonly photodiode currents. These photodetectors bridge the gap between a physical event, light, and electronics. There are a variey of amplifier configurations to select from and the choice is based on noise, bandwidth, offset, and linearity. A considerable amount has been written on the performan

Serie: ACF2101 (3)

Semiconductors > Amplifiers > Operational Amplifiers (Op Amps) > Precision Op Amps