LS320 HIGH INPUT IMPEDANCE BiFET AMPLIFIER FEATURES rGs = 100GΩ HIGH INPUT IMPEDANCE HIGH TRANSCONDUCTANCE ABSOLUTE MAXIMUM RATINGS YFS = 30,000µS TOP VIEW TO-72 1 @ 25 °C (unless otherwise stated) Maximum Temperatures Storage Temperature -55 to +150 °C Operating Junction Temperature -55 to +125 °C Source and Case Gate Maximum Power Dissipation 200mW Continuous Power Dissipation @ +25 °C Source and Case Maximum Currents Drain Current ID = 25mA Drain Maximum Voltages Drain to Source 1 Gate to Source VDSO = 20V VGSS = 20V ELECTRICAL CHARACTERISTICS @ 25 °C (unless otherwise stated) SYMBOL CHARACTERISTIC MIN VDS Drain to Source Voltage -20 VGS Gate to Source Voltage -7 gfs Common Source Forward Transconductance goss Common Source Output Conductance rGs Gate to Source Input Resistance TYP MAX -10 -12 30,000 300 100 UNITS CONDITIONS V IDS = 100µA, VGS = 0V V IDS = 10mA, VDS = -10V µS IDS = 10mA, VDS = -10V, f = 1kHz µS IDS = 10mA, VDS = -10V, f = 1kHz GΩ VGS = 0 to 20V, TJ to 125 °C CISS Input Capacitance 8 pF IDS = 10mA, VDS = -10V CRSS Reverse Transfer Capacitance 1.5 pF IDS = 10mA, VDS = -10V Noise Voltage 25 µV IDS = 10mA, VDS = 10V BW = 50 to 15kHz en 2,3 All limits are absolute numbers. Negative signs indicate electrical polarity. Linear Integrated Systems • 4042 Clipper Court • Fremont, CA 94538 • Tel: 510 490-9160 • Fax: 510 353-0261 Doc 201120 06/15/2013 Rev A8 ECN# LS320 FUNCTIONAL SCHEMATIC PACKAGE OPTIONS 1. Absolute maximum ratings are limiting values above which serviceability may be impaired. 2. The gate to source voltage must never exceed 100V, t < 10ms. 3. Additional screening available Information furnished by Linear Integrated Systems is believed to be accurate and reliable. However, no responsibility is assumed for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Linear Integrated Systems. Linear Integrated Systems (LIS) is a 25-year-old, third-generation precision semiconductor company providing high-quality discrete components. Expertise brought to LIS is based on processes and products developed at Amelco, Union Carbide, Intersil and Micro Power Systems by company President John H. Hall. Hall, a protégé of Silicon Valley legend Dr. Jean Hoerni, was the director of IC Development at Union Carbide, co-founder and vice president of R&D at Intersil, and founder/president of Micro Power Systems. Linear Integrated Systems • 4042 Clipper Court • Fremont, CA 94538 • Tel: 510 490-9160 • Fax: 510 353-0261 Doc 201120 06/15/2013 Rev A8 ECN# LS320