Circuit Slices, LLC
Ring+VCA
CS045
CS045-UM v1.0| www.circuitslices.com
1
The Circuit Slices
Ring+VCA
(CS045) is a dual-function module for Eurorack-compatible synthesizers.
Packed in a narrow panel is both a quality classic analog ring modulator circuit and a basic linear VCA.
Ring modulators typically are patched to a VCA
–
this ring modulator includes the VCA.
Features and Specifications for the CS045 Ring+VCA
The
“Ring
Modulator
” or “
Balanced Modulator
”
or “4
-Quadrant Multiplier
”
, circuit uses a quality Analog
Devices AD633 chip
•
Low feedthrough (+/-0.1% Yin and +/- 0.3% Xin typical)
•
Low noise (90 µV rms)
•
No ‘Nulling’ adjustments are required
•
See Analog Devices AD633 data sheet for complete chip specifications
The VCA, or “two
-quadrant multiplier
” circuit uses a
transconductance chip
The VCA is trimmer-adjusted for unity-gain output with a 5V CV input (user adjustable trimmer)
The r
ing modulator output is “normal” patched to the VCA input
The VCA and Ring Modulator can be used separately
–
patching to VCA IN disconnects Ring OUT
Includes power cable and case screws
Reverse power protection
Low Power: +12 VDC @ 13 mA, -12 DC @ 13 mA, using a standard Eurorack 10-pin power connection
Connections: Standard 3.5mm jacks
Depth: 32 mm
Narrow panel width: 4 HP