DLPCA-200: The Ultimate Low-Noise Current Amplifier
Packed with features the DLPCA-200 Variable-Gain Transimpedance Amplifier is designed for a wide range of applications that require the conversion of small currents into usable voltages. It is ideally suited, for example, for DC measurements, time resolved measurements down to the μs-region and as the preamplifier for photodiodes or lock-in systems. The DLPCA-200 offers virtually all of the features that can be expected from a high-end current amplifier including selectable transimpedance gain from 103 to 1011 V/A, switchable AC/DC-coupling, adjustable bias-voltage and offset, switchable 10 Hz lowpass filter and the capability of manual and opto-isolated remote control. All this in a rugged, compact EMI-shielded case, designed with the user in mind and built to guarantee trouble-free operation even in very rough and noisy environments.
Bandwidth and Frequency Response independent of Source
Unlike similar amplifiers available the DLPCA-200 requires no particular adaptation, such as frequency compensation for different sources. In addition, it provides maximum speed even in high gain settings. At the highest gain setting of 1011 V/A it provides a 3 dB-bandwidth of 1.2 kHz and a 300 ?s rise time. For those applications not requiring the full bandwidth, the unit has a switchable 10 Hz lowpass filter to eliminate wideband noise and thus allowing accurate and ultra low-noise DC current measurements down to femtoAmperes.
Applications for DLPCA-200 Current Amplifier
Photodiode and Photomultiplier Amplifier
Scanning Tunneling Microscopy (STM)
Preamplifier for Lock-Ins, A/D-Converters etc.
|Low Noise Input/Output Cable: CAB-LN1 Low Noise Cable|
|The LUCI-10 amplifier interface allows remote control of FEMTO amplifiers and photoreceivers with a remote control capability from a standard Windows PC with USB port.|
|Click Part # to view pdf datasheet.|
|Performance Range||Low Noise||High Speed|
|Bandwidth [- 3 dB] [kHz]||500||500||400||200||50||7||1.1||500||500||400||200||50||7||1.1|
|Rise Time(10%-90%)||700 ns||700 ns||900 ns||1.8μs||7μs||50μs||300μs||700 ns||700 ns||900 ns||1.8μs||7μs||50μs||300μs|
|Equ. Input Noise [/Hz1/2]||20 pA||2.3 pA||450 fA||130 fA||43 fA||13 fA||4.3 fA||13 pA||1.8 pA||440 fA||130fA||43 fA||13 fA||4.3 fA|
|Accuracy Performance||Gain +1 %, Flatness 0.1 dB|
|Lowpass Filter||Switchable to 10 Hz|
|Output Performance||+10 V >1MΩ load|
|BIAS Voltage||Adjustable +10 V, max. 22 mA, Connected to BNC-Shield, switchable to GND|
|Power Supply||+15 V, +120 mA/-80 mA Typ.|
|Control Interface||5 Opto-Isolated Digital Inputs, TTL/CMOS compatible, Analog Offset Control Voltage Input|
|Interface Software Option||LUCI-10 Control Interface Software & Hardware Option|
|Case||170 x 60 x 45 mm (L x W x H), Weight 320 g (0.74 lbs)|
|Bandwidth and rise/fall times are independent of detector capacitance up to 1 nF. Offset adjustable by trimpot or external control voltage. LED overload indication. Input protected against +3 kV transients. Output short-circuit protected. Power supply via 3-pin LEMO socket. A mating connector is provided with the device. Optional power supply PS-15 is available. For further information please view the datasheet.|