Small Instrumentation Modules SIM984 — Isolation amplifier · Isolation voltage up to ±1000 V · Gain of x1, x10, or x100 · 1 MHz bandwidth · 15 nV/√Hz input noise · 1 MΩ input impedance SIM984 Isolation Amplifier The SIM984 is a wide bandwidth, low noise isolation amplifier. It has a gain of up to x100 and a bandwidth up to 1 MHz. The input stage is floating and is optically coupled to the output stage which is chassis grounded. The input signal can float up to 1000 V above or below ground. DC output offset can be adjusted from the front panel with a small screwdriver. In addition to measuring isolated signals, the SIM984 can also be used to break ground loops and reduce common-mode interference. Specifications Isolation voltage ±1000 V (max) IMRR 150 dB (DC) Max. input ±10 V Input impedance 1 MΩ Input noise (typ) 15 nV/√Hz at 1 kHz Gain x1, x10, x100 (±0.5 %) Frequency range DC to 100 Hz (Low BW) DC to 10 kHz Mediate BW) DC to 1 MHz (High BW) Stanford Research Systems Output ±10 V, ±20 mA (max), 50 Ω Output offset ±0.1 V, adjustable Output offset drift 1 mV/°C (typ) Output noise 80 µVrms (100 Hz BW) 200 µVrms (10 kHz BW) 1.5 mVrms (1 MHz BW) Interface Serial via SIM interface Connectors Banana jacks (2 front-panel) BNC (2 front-panel, 1 rear-panel) DB15 (male) SIM interface Power Powered by SIM900 Mainframe, or by user-provided DC power supply (±15 V, +5 V, and +24V) Dimensions 1.5" × 3.6" × 7.0" (WHD) Weight 1.5 lbs. Warranty One year parts and labor on defects Isolation amplifier