Datasheet HCA-10M-100K High-Speed Current Amplifier FeaturesBandwidth and Frequency Response independent of Detector-Capacitance (up to 15 pF) Low Noise, 1.1pA/√ √Hz equivalent Input Noise Current √ √ Bandwidth DC ... 10 MHz 5 Transimpedance (Gain) 1 x 10 V/A Protection against ± ± 3.5 kV Transients ± ± ApplicationsPhotodiode- and Photomultiplier-Amplifier Spectroscopy Charge-Amplifier Ionisation Detectors Preamplifier for Lock-Ins, A/D-Converters, etc. Specifications Test Conditions Vs = ± 15 V, Ta = 25°C 5 Gain Transimpedance 1 x 10 V/A (50 Ω Load) Gain Accuracy ± 1 % Frequency Response Lower Cut-Off Frequency DC Upper Cut-Off Frequency 10 MHz (- 3 dB) Rise- / Fall-Time 35 ns (10% - 90%) Gain Flatness ± 0.3 dB Input Equ. Input Noise Current 1.1pA/√Hz (@ 100 kHz) Equ. Input Noise Voltage 6 nV/√Hz (@ 100 kHz) Input Bias Current 5 pA typ. Input Bias Current Drift Factor 1.7 / 10 K Offset Current Compensation ± 20 μA, adjustable by Offset-Trimpot Max. Input Current ± 15 μA (linear Amplification) Input Offset Voltage < 2 mV DC Input Impedance 50 Ω (virtual) // 5 pF Output Output Voltage ± 1.5 V (50 Ω Load) Output Impedance 50 Ω Bias Output Bias Output Voltage Range ± 12 V, adjustable by Bias-Trimpot Bias Output Impedance 10 kΩ // 1 μF Power Supply Supply Voltage ± 15 V Supply Current ± 50 mA typ. Case Weight 210 gr. (0.5 lbs) Material AlMg4.5Mn, nickel-plated SOPHISTICATED TOOLS FOR SIGNAL RECOVERY DB-E-0207-25 / R 29 / MD / Date: 29.08.03 / 3 Pages Datasheet HCA-10M-100K High-Speed Current Amplifier Specifications (continued) Temperature Range Storage Temperature -40 ... +100 °C Operating Temperature 0 ... +60 °C Absolute Maximum Ratings Input Voltage ± 5 V Input Voltage Transient ± 3.5 kV (Pulsewidth 10 ns) Power Supply Voltage ± 22 V Connectors Input BNC Output BNC Power Supply LEMO Series 1S, 3-pin fixed Socket Pin 1: + 15V Pin 2: - 15V Pin 3: GND PIN 2 PIN 1 -Vs +Vs PIN 3 GND Application Diagrams Photo Detector Biasing in Photoconductive Mode: Best Choice for High-Speed Applications and optimum Signal To Noise Performance. STABILIZED BIAS VOLTAG E OUTP UT Use additional Bypass Capacitor close to Detector HCA (~100 nF, Ceramic) High-Speed Current to Voltage Converter CURRENT INPUT I/U C onnect the Detector +12 V as close as possible to the Am plifier. BIAS 10 kΩ 470 nF -12 V AZ01-0201-20 SOPHISTICATED TOOLS FOR SIGNAL RECOVERY Page 2 Datasheet HCA-10M-100K High-Speed Current Amplifier Dimensions 94 mm 87 mm 74 mm INHCAOUT POWER 22 mm ∅ 3.3 mm 41 mm DZ01-0201-22 FEMTO Messtechnik GmbH Specifications are subject to change without notice. Information furnished herin is believed to Paul-Lincke-Ufer 34 be accurate and reliable. However, no responsibility is assumed by FEMTO Messtechnik D-10999 Berlin Germany GmbH for its use, nor for any infringement of patents or other rights granted by implication Tel.: +49 (0)30 – 4 46 93 86 or otherwise under any patent rights of FEMTO Messtechnik GmbH. Product names Fax: +49 (0)30 – 4 46 93 88 mentioned may also be trademarks used here for identification purposes only. e-mail: info@femto.de  by FEMTO Messtechnik GmbH http://www.femto.de Printed in Germany SOPHISTICATED TOOLS FOR SIGNAL RECOVERY Page 3 15 mm 12 mm 14 mm 44 mm 27 mm 51 mm