Datasheet HCA-1M-1M-C High Speed Current Amplifier Features Bandwidth and Frequency Response Independent of Detector Capacitance (up to 2 nF) Low Noise 3.5 pA/√ √Hz Equivalent Input Noise Current Bandwidth DC ... 1 MHz 6 Transimpedance (Gain) 1 x 10 V/A Protection against ± 3.5 kV Transients Applications Photodiode 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 Gain Transimpedance Gain Accuracy 1 x 10 V/A (@ 50 Ω load) ±1% Frequency Response Lower Cut-Off Frequency Upper Cut-Off Frequency (- 3 dB) Rise / Fall Time (10 % - 90 %) Gain Flatness DC 1 MHz 350 ns ± 0.3 dB Input Equ. Input Noise Current Equ. Input Noise Voltage Input Bias Current Input Bias Current Drift Offset Current Compensation Input Current Range Input Offset Voltage DC Input Impedance 3.5 pA/√Hz (@ 100 kHz) 0.8 nV/√Hz (@ 100 kHz) 18 µA typ. 0.8 nA / K ± 6 µA adjustable by offset trimpot ± 1.5 µA (for linear amplification) 3 mV 50 Ω (virtual) // 5 pF Output Output Voltage Range Output Impedance ± 1.5 V (@ 50 Ω load) for linear operation and low harmonic distortion 50 Ω (terminate with 50 Ω load for best performance) Bias Output Voltage Range Bias Output Impedance ± 12 V, adjustable by bias trimpot 10 kΩ // 1 µF Bias Output 6 DE-HCA-1M-1M-C/DS/R2/02NOV05/ Page 1 of 3 SOPHISTICATED TOOLS FOR SIGNAL RECOVERY Great Britain: LASER COMPONENTS (UK) Ltd., Phone: +44 1245 491 499, Fax: +44 1245 491 801, [email protected] France: LASER COMPONENTS S.A.S., Phone: +33 1 3959 5225, Fax: +33 1 3959 5350, [email protected] Datasheet HCA-1M-1M-C High Speed Current Amplifier Specifications (continued) Power Supply Supply Voltage Supply Current ± 15 V ± 50 mA typ. (depends on operating conditions, recommended power supply capability minimum ± 150 mA) Case Weight Material 210 g (0.5 lbs) AlMg4.5Mn, nickel-plated Temperature Range Storage Temperature Operating Temperature -40 ... +100 °C 0 ... +60 °C Absolute Maximum Ratings Input Voltage Input Voltage Transient Power Supply Voltage ±5V ± 3.5 kV (pulsewidth 10 ns) ± 22 V Connectors Input Output Power Supply BNC BNC LEMO series 1S, 3-pin fixed socket Pin 1: + 15V Pin 2: - 15V Pin 3: GND PIN 2 -Vs PIN 1 +Vs PIN 3 GND Application Diagrams Photo Detector Biasing in Photoconductive Mode: Best choice for high speed applications and optimum signal to noise performance. U se ad ditio na l Bypass C apacitor close to D e te ctor (~ 100 n F, C e ra m ic) STABILIZ E D BIAS VO LTAG E O U TP U T HCA CURRENT IN P U T H ig h -S pee d C urren t to Voltag e C onve rter I/U C onn ect the D e te ctor a s close as p ossible to th e Am plifier. +1 2 V BIAS 10 kΩ 4 70 nF -1 2 V A Z 0 1 -0 2 0 1 -2 0 Page 2 SOPHISTICATED TOOLS FOR SIGNAL RECOVERY Great Britain: LASER COMPONENTS (UK) Ltd., Phone: +44 1245 491 499, Fax: +44 1245 491 801, [email protected] France: LASER COMPONENTS S.A.S., Phone: +33 1 3959 5225, Fax: +33 1 3959 5350, [email protected] Datasheet HCA-1M-1M-C High Speed Current Amplifier Dimensions 94 mm 87 mm 15 mm 74 mm OUT 12 mm 51 mm HCA 44 mm IN POWER 22 mm ∅ 3.3 mm 27 mm 14 mm 41 mm DZ01-0201-22 12/07 / V1 / HW / femto/current/ hca-1m-1m-c.pdf www.lasercomponents.com Specifications are subject to change without notice. Information furnished herin is believed to be accurate and reliable. However, no responsibility is assumed by FEMTO Messtechnik GmbH for its use, nor for any infringement of patents or other rights granted by implication or otherwise under any patent rights of FEMTO Messtechnik GmbH. Product names mentioned may also be trademarks used here for identification purposes only. by FEMTO Messtechnik GmbH Printed in Germany SOPHISTICATED TOOLS FOR SIGNAL RECOVERY Great Britain: LASER COMPONENTS (UK) Ltd., Phone: +44 1245 491 499, Fax: +44 1245 491 801, [email protected] France: LASER COMPONENTS S.A.S., Phone: +33 1 3959 5225, Fax: +33 1 3959 5350, [email protected] Page 3