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TC9235F

Toshiba
Part Number TC9235F
Manufacturer Toshiba
Description Electronic Volume Controller
Published Apr 23, 2005
Detailed Description TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC9235P,TC9235F TC9235P/F Electronic Volume Control IC The...
Datasheet PDF File TC9235F PDF File

TC9235F
TC9235F

Overview
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC9235P,TC9235F TC9235P/F Electronic Volume Control IC The TC9235P/F is an electronic volume control IC developed for use in audio equipment such as car stereo and portable stereo system.
Features • Attenuation can be controlled from 0dB to −78dB by up, down input.
• This IC have 20dB tap for loudness circuit.
• This IC features a built-in DC output circuit (7 level) for volume level meter.
• Polysilicon resistors enables low-distortion, high-performance volume systems.
• Volume level remains in backup mode with low current consumption.
• Package is DIP16 and SOP16.
Pin Assignment TC9235P TC9235F Weight DIP16-P-300-2.
54A: 1.
0 g (typ.
) SOP16-P-300-1.
27: 0.
16 g (typ.
) Block Diagram 1 2003-06-24 Pin Function TC9235P/F Pin No.
Symbol 1 VSS 16 VDD 2 OUT-1 15 OUT-2 3 IN-1 14 IN-2 4 TP-1 13 TP-2 5 GND-1 12 GND-2 6 UP 7 DN 8 OSC 9 INT 10 INH 11 DC-OUT Pin Name Negative power supply pin Positive power supply pin Function and Operation Power supply terminal Volume output pins Volume circuit Note  Volume input pins Tap output pins for loudness  Analog ground pins Volume up input pin Volume up, down control input pin.
Volume down input pin The 1 step/1 push volume is controlled by pushing the Built-in pull-up resistor Up or Down key.
If the key has been pushed continuously, the continuous volume control.
Oscillation pin Oscillation pin.
Oscillator circuit consist of C･R connection.
 Oscillation is executed while key is pushed.
Initializing pin Input pin for setting initial volume level volume level set to 46dB by “L” input.
Built-in pull-up resistor Inhibit terminal Back up mode input pin.
Internal all operation is stopped by “L” input, and volume level remains with low current consumption.
 DC output pin for level meter DC output pin for volume level meter.
DC voltage which is corresponded to volume step is generated.
 2 2003-06-24 Operation TC9235P/F 1.
Volume Circuit Volume c...


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