IR High Fidelity Remote Volume Controller Chip with LCD support
Features:
- Controls up to six TI PGA2310/2320 chips/twelve audio channels
- Trainable - use it with a remote that you already have
- Optional 16 character by 1 line LCD module can be used to display volume and status
- Volume of each channel can be offset +/- 12.5 dB. Offsets are stored in non-volatile EEPROM memory
- Two code versions now available - full gain (original) version, and 0dB maximum master gain version
- Dedicated Power and Balance Set outputs
- Mute function
- Five additional output signals can be configured as input selects or general-purpose toggles
- In addition to IR control, three pushbutton inputs are supported: Volume Up, Volume Down, Power On/Off
- Local volume control can be either Up/Down momentary pushbuttons or a rotary encoder
- LED flashes when enabled IR command is received
- Operates from +/-15 volts DC
- Low power operation
- Kit w/pc board available for easy implementation. (All through-hole components for easy assembly.)
Now you can enjoy the excellent audio performance of TI's PGA2310/2320 chips, and the convenience of IR remote control. New IRVC2 chip combines a Learning IR remote control recognizer with the logic needed to control TI's high-performance digital volume control IC.
This
photo shows a fully populated (six channel) IRVC2 pc board.
A second board can be added to control up to 12 channels if needed. IR sensor and Learn PB switch can
be seen near lower left corner. TO-92 5 volt regulator is at top left corner of pc bd.
IRVC2 pc board is 3.8" x 2.5".
If space for the IR receiver is tight, use our RS2 pc bd for just the IR receiver and its bypass capacitor, and connect it to the main pc board with a small ribbon cable:
About maximum gain setting: Someone recently suggested that the maximum setting of the master volume (gain) before channel offsets are applied should be limited to 0dB to prevent overloading downstream equipment. As a result, I now have two versions of the code available. The original version allows setting the master volume to any value from 0-255, while the new version limits the master volume value to 192 (0dB). Please specify which version you want when you order.
Prices (not including small per-order S&H fee):
IRVC2 Chip - $14.95
(chip is programmed, with code protect bit set).
Please specify whether or not you want "volume/gain limit" code version (see
above paragraph).
Please download chip data sheet , sample schematic diagram, and
parts list
PC-IRVC2 blank pc board - $26.95
Please download chip data sheet,
assembly instructions, schematic diagram,
parts list, and
parts placement guide
PC-RS2 blank PC board - $0.95
Includes 8" 3-conductor ribbon cable. PC-RS2 is approx 0.5" by 0.9", with a
single mounting hole. Allows mounting Vishay IR receiver and electrolytic
bypass capacitor remotely from main IRVC2 pc board, in case that is needed.
Please download parts placement
guide.
Note: All parts needed to populate pc board, except the IRVC2 chip, can be purchased at either www.Digi-Key.com or www.Mouser.com
PC-IRVC2 Kit - $44.95
Please specify whether or not you want "volume/gain limit" code version (see
above paragraph).
Includes IRVC2 Chip, PC-IRVC2 pc board, and all components needed to populate just the control portion
of the board - ANALOG SECTION COMPONENTS AND PGA CHIPS ARE NOT INCLUDED. YOU WILL NEED TO BUY THEM YOURSELF. 12"
J2 and J3 (NOT J1) ribbon cables and female connectors for PC-IRVC2 board end
are included. Please
download chip data sheet,
assembly instructions,
schematic diagram, parts list, and
parts placement guide.
PC-IRVC2SB Kit - $30.95
Includes PC-IRVC2 pc board, and components needed to add a second board
for more channels - ribbon cable, connectors, voltage regulator,
etc. ANALOG SECTION COMPONENTS FOR SECOND BOARD ARE NOT INCLUDED.
DISCLAIMER: I take no responsibility whatsoever for the use and/or implementation thereof, or the misuse leading to damage to equipment, property, or life, caused by the above circuits.