Trek Model 623B High-Voltage Power Amplifier The Model 623B is a DC-stable, high-voltage power amplifier designed to provide precise control of bi-polar output voltages. It features an all-solid-state design for high slew rate, low-noise operation and a wide bandwidth of DC to greater than 10 kHz . The four-quadrant, active output stage sinks or sources current into reactive or resistive loads throughout the output voltage range. This type of output is essential to achieve an accurate output response and high slew rate demanded by a variety of loads such as highly capacitive or reactive loads. Key Specifications • Output Voltage Range: • Output Current Range: • Slew Rate: • Large Signal Bandwidth (1% distortion): • DC Voltage Gain (Noninverting Configuration): • DC Voltage Gain (Inverting Configuration) : • Differential Configuration: 0 to ±2 kV DC or peak AC 0 to ±40 mA DC or peak AC Greater than 300 V/ps DC to greater than 10 kHz 1000 V/V (VA) -1000 V/V (VB) Function of the difference between two input signals. Represented by the equation: Vout = 1000 (Va - Vb) Typical Applications Include • Electrostatic beam deflection • Electrooptic modulation • Electrophoresis research • Piezoelectric poling and driving Features and Benefits • Four-quadrant output for driving capacitive loads • Closed loop system for high accuracy • Short-circuit protected for equipment protection • All solid-state design for maintenance free operation • DC-stable for programmable supply applications • Low output noise for ultra-accurate outputs • NIST-traceable Certificate of Calibration provided with each unit • compliant TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK 716-438-7555 • 716-201-1804 (fax) • www.trekinc.com •

Model 623B Specifications Performance 0 to ±2 kV DC or peak AC 0 to ±40 mA DC or peak AC 0 to ±2 V DC or peak AC Output Voltage Output Current Input Voltage Range Input Impedance Noninverting Inverting Differential DC Voltage Gain Noninverting (VJ Configuration Inverting (VB) Configuration Differential Configuration DC Voltage Gain Accuracy DC Offset Voltage Output Noise Slew Rate (10% to 90%, typical) Settling Time (to 1%) Large Signal Bandwidth (1% distortion) Small Signal Bandwidth (-3dB) Stability Drift with Time Drift with Temp Voltage Monitor Ratio DC Accuracy DC Offset Voltage Output Noise Output...