SIM965 Analog Filter0 pages

Small Instrumentation Modules
SIM965 — Bessel and Butterworth filter

· Bessel and Butterworth filter types
· 1 Hz to 500 kHz
· 3-digit cutoff frequency resolution
· High-pass or low-pass operation
· Selectable rolloff
· Continuous time (not sampled)

· SIM965 ... $1095 (U.S. list)

SIM965 Analog Filter
The SIM965 Analog Filter is ideal for signal conditioning
applications where Bessel or Butterworth filters are needed.
Bessel filters offer clean step response (negligible overshoot)
and linear phase response, while Butterworth filters provide
excellent pass-band flatness with some overshoot. A choice
of high-pass or low-pass filtering is selected from the front
panel. Cutoff frequencies are set with 3-digit resolution, and
a choice of 12, 24, 36 or 48 dB/octave rolloff is provided for
either filter type.
The SIM965 accepts input signals between ±5 V, and has
unity gain. Its low noise and low harmonic distortion, along
with a bandwidth of greater than 1 MHz, make it ideal
in sensitive analog applications. If signal amplification is
needed, the SIM910 JFET Preamplifier, or the SIM911 BJT
Preamplifier should be considered.

Up to eight SIM965 modules can be housed in one SIM900
mainframe. Mainframes can be cascaded, allowing an
unlimited number of filter channels for complex applications.
The SIM965 is also fully programmable. All functions can be
controlled from a computer via the SIM900 Mainframe. Both
RS-232 and GPIB interfaces are supported by the mainframe.
The digital control circuitry in the SIM965 is designed
with a special clock-stopping architecture in which the
microcontroller is turned on only when settings are being
changed. This guarantees that no digital noise can contaminate
low-level analog signals.

Ordering Information
SIM965t

Stanford Research Systems

Programmable analog filtert

$1095

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www.thinkSRS.com