GS3026

Features:

• CIC suitable package size
• 8:1 compression ratio
• 38 dB maximum system gain, adjustable over a 38 dB range
• output compression threshold, adjustable over 16 dB range
• designed to drive a class D integrated receiver
• averaging detector


Specifications

PARAMETER	VALUE / UNITS
Supply Voltage	3 VDC
Power Dissipation	25 mW
Operating Temperature Range	-10° C to 40° C
Storage Temperature Range	-20° C to 70° C

Description

The GS3026 CIC hybrid features AGC-O capability for low distortion output limiting and offers a package size suitable for CIC instruments.  The circuit consists of a newly designed AGC preamplifier and output stage, capable of driving the class D integrated receiver.  The compression control circuit of GS3026 varies the current controlled resistance, connected between the input and output of the AGC preamplifier.  The compression circuit operates with an 8:1 compression ratio and uses an averaging detector with a time constant of 270 ms, selected to provide optimal sound quality over the full range of sound and listening environments.  The actual attack and release times of GS3026 are typically 40 ms and 150 ms respectively when the circuit is fully in the compression region of operation (measured times will vary depending on gain and threshold settings).

The system gain and compression control of GS3026 can be adjusted by the choice of two independent resistors.  Maximum system gain is 38 dB and GS3026 can be adjusted within a 38 dB range.  The output compression threshold can be adjusted within a 16 dB range.