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DLPCA-200 Low noise current amplifier with adjustable gain

Updated:2022-12-02

Brand name:FEMTO
Model number: DLPCA-200
Description: Low noise current Amplifier DLPCA-200 Product Name: Low noise current amplifier DLPCA-200 Product Model: DLPCA-200 Product brand: Germany FEMTO Product Type: Amplifier product Use: current signal ampl
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Product Details

DLPCA-200 Low noise current amplifier with adjustable gain - Features

Transimpedance (gain) from 10 3 to 10 11 V/A
The input noise is up to 4.3 fA/√Hz
The bandwidth is up to 500 kHz
Up to 700 ns rise time
Adjustable bias voltage
Setup at the device side and through the digital interface

Excellent low noise general purpose current amplifier

Equipped with many useful features, the DLPCA-200 is the preferred choice for countless applications requiring conversion of small currents to manageable output voltages. For example, it is well suited for DC measurements, time-resolved measurements in the range as low as µs and for use as a preamplifier for locking systems or photodiodes.

The DLPCA-200 offers all the features you would expect from A high-end general purpose current amplifier: adjustable gain from 10 3 to 10 11 V/A, adjustable bias and offset voltages, switchable 10 Hz low-pass filter measurements for low-noise DC, and switchable AC/DC coupling. All basic Settings can be controlled directly on the device or remotely via a digital interface, for example using a PC. All are mounted in a rugged, compact and EMC compliant housing, allowing amplification of the signal close to the source.

Bandwidth and frequency response independent of the source capacitance

In contrast to other similar amplifiers, the FEMTO DLPCA-200 does not require any special tuning for different signal sources, such as frequency compensation or similar tuning. Gain values and bandwidths are guaranteed for all stages regardless of the source capacitance, up to a value of 1 nF.

For time-resolved measurements of fast signals, the DLPCA-200 has a special "high speed" mode that guarantees a short rise time even at high gains. If some applications do not require full bandwidth to support the highest sensitivity, accurate DC current measurements in the low to subpicoamp range can be performed by switching to a 10 Hz bandwidth.

Applications

Photodiode and photomultiplier amplifier
Scanning tunneling microscope (STM)
Spectroscopy
Beam control for particle accelerators/synchrotrons
ionization detector
Preamplifiers for phase locking, A/D converters, etc

Model	DLPCA-200
range of application	low noise							high speed
transimpedance [V/A]	10 ³	10 ⁴	10 ⁵	10 ⁶	10 ⁷	10 ⁸	10 ⁹	10 ⁵	10 ⁶	10 ⁷	10 ⁸	10 ⁹	10 ¹⁰	10 ¹¹
3 dB BW [kHz]	500	500	400	200	50	7	1.1	500	500	400	200	50	7	1.1
up time (10 % - 90%)	700ns	700ns	900ns	1.8 μs	7 μs	50 μs	300 μs	700ns	700ns	900ns	1.8 μs	7μs	50μs	300μs
equation 输入 yawp [/√Hz]	20pA	2.3pA	450fA	130 mA	43FA	13 mA	4.3fA	13Pa	1.8pA	440fA	130 mA	43FA	13 ma	4.3fA
accuracy	gain±1%，Residual ripple0.1 dB
lpf	Switchable to 10 Hz
exit	±10V, ±30mA
bias	±10 V，maximum 22 mA，The outer conductor of the BNC connected to the input socket can be switched to ground
mains input	±15 V，+120 mA / -80 mA Typical values, recommended ±200 mA
control interface	Five optical couplers protect the digital input，TTL/CMOS compatibility, and an analog input for controlling the offset voltage
housing	170 x 60 x 45 mm (L x W x H), weighs 320 g
Datasheet	322KB

The offset can be adjusted by a trimmer and an external control voltage. LED overload indicator. The input is protected from transients up to ±3 kV. Output short circuit protection. The supply voltage is ±15 V through a 3-pin Lemo ® socket. Includes a matching connector. Optional PS-15 series power supply. See the datasheet for more details.

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