Return to selector

Current Amplifiers
Variable-Gain Low-Noise DLPCA-200

  • Transimpedance Gain from 103 to 1011 V/A
  • Input Noise Down to 4.3 fA/√Hz
  • Bandwidth up to 500 kHz
  • Rise Time down to 700 ns
  • Bias-Voltage Adjustable
  • Manual and Remote Control

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 Capacitance
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 µs 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
Photodiode and Photomultiplier Amplifier
Scanning Tunneling Microscopy (STM)
Spectroscopy
Charge Amplifier
Ionization Detectors
Preamplifier for Lock-Ins, A/D-Converters etc.

Click Part # to view pdf datasheet.

Model DLPCA-200
Performance Range Low Noise High Speed
Transimpedance [V/A] 103 104 105 106 107 108 109 105 106 107 108 109 1010 1011
Bandwidth [- 3 dB] [kHz] 500 500 400 200 45 7 1.2 500 500 400 200 45 7 1.2
Rise Time(10%-90%) 700 ns 700 ns 900 ns 1.8 µs 8 µs 50 µs 300 µs 700 ns 700 ns 900 ns 1.8 µs 8 µs 50 µs 300 µs
Equ. Input Noise [/Hz1/2] 20 pA 2.3 pA 460 fA 130 fA 43 fA 13 fA 4.3 fA 13 pA 1.8 pA 450 fA 130 fA 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, ±30 mA
BIAS Voltage ±10 V, max. 22 mA, Connected to BNC-Shield, switchable to GND
Power Supply ±15 V, +150 mA/-100 mA
Control Interface 5 Opto-Isolated Digital Inputs, TTL/CMOS compatible, Analog Offset Control Voltage Input
Case 150 x 55 x 40 mm (L x W x H), Weight 320 g (0.74 lbs)
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.

 

Return to selector

 

ELECTRO OPTICAL COMPONENTS, Inc.

FEMTO photoreceivers and amplifiers are available in North America exclusively from ELECTRO OPTICAL COMPONENTS, Inc.

INFORMATION REQUEST

Name (Required)
Title
Company (Required)

Email address
(Required)

Phone (Required)

Fax 

What, specifically, would you like to know?

Please provide your complete mailing address to receive literature package:

Address:

Bldg/Suite/Mail Stop

City

State

Zip Code