PT2253A
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Electronic Volume Controller
PT2253A
2253A electronic volume controller utilizing CMOS Technology specially designed audio equipments. built-in channels making ideally suitable mono stereo sound applications. 2253A provides wide frequency response range very harmonic distortion mention few; thereby guaranteeing highly effective reliable performance.
FEATURES
CMOS Technology Power Consumption High Operating Voltage Range (Backup Voltage -68dB attenuation controlled 2dB/step Channels each chip Capable control attenuation built-in oscillator Up/Down Single Power Supply Dual Power Supplies used Wide Frequency Response Range Very Harmonic Distortion Available pin, Package
APPLICATIONS
Audio Equipment Volume Control Replace TTraditional Replacement
PT2253A v2.6
October, 1999
Electronic Volume Controller
PT2253A
CONFIGURATION
L-OUT1 L-IN1 A-GND L-IN2 L-OUT2 R-OUT1 R-IN1 A-GND R-IN2 R-OUT2
PT2253A
PT2253A v2.6
October, 1999
Electronic Volume Controller
PT2253A
APPLICATION CIRCUIT
DUAL POWER SUPPLY (L-CHANNEL ONLY)
10uF LM358
10uF
10uF INPUT GROUND 10uF OUTPUT fosc
L-OUT1 R-OUT1 L-IN1 A-GND L-IN2 R-IN1 A-GND R-IN2
L-OUT2 R-OUT2
100K 1N4148
PT2253A
(0.7)(CX)(
1N4148
DOWN
PT2253A v2.6
October, 1999
Electronic Volume Controller
PT2253A
APPLICATION CIRCUIT
DUAL POWER SUPPLY (L-CHANNEL ONLY)
10uF LM358 68pF 10uF
0.15uF
110K
10uF INPUT GROUND OUTPUT 10uF fosc
L-OUT1 R-OUT1 L-IN1 A-GND L-IN2 R-IN1 A-GND R-IN2
L-OUT2 R-OUT2
100K IN4148
PT2253A
(0.7)(CX)(
IN4148
DOWN
Notes:
Since Buffer between Att-1 Att-2 already 10dB Voltage Gain, higher input level cause Amp's Output Clipping. avoid unwanted distortion, input signal level applied IN-1 should over Vrms.
PT2253A v2.6
October, 1999
4.7uf
PT2253A
100K IN4148 100uf
-5A-GND L-IN2 10uf L-OUT2 R-OUT2 10uf R-IN2 A-GND IN4148
PT2253A v2.6
12V) 0.1uf LM358 LM358 L-OUT1 10uf L-IN1 R-IN1 10uf Input (Right Channel) R-OUT1 Output (Right Channel)
SINGLE POWER SUPPLY
Electronic Volume Controller
APPLICATION CIRCUIT
Input (Left Channel)
Output (Left Channel)
PT2253A
October, 1999
Electronic Volume Controller
PT2253A
APPLICATION CIRCUIT
SINGLE POWER SUPPLY
Input (Right Channel) Output (Right Channel)
12V)
LM358 110K
68pF
0.15uf
IN4148
IN4148
10uf
4.7uf
100K
0.1uf
10uf
R-OUT1
A-GND
R-IN1
R-IN2
R-OUT2
L-OUT1
L-OUT2
A-GND
L-IN1
L-IN2
10uf
10uf
PT2253A
LM358 110K
68pF
0.15uf
Input (Left Channel)
Output (Left Channel)
Notes:
Since Buffer between Att-1 Att-2 already 10dB Voltage Gain, higher input level cause Amp's Output Clipping. avoid unwanted distortion, input signal level applied IN-1 should over Vrms.
PT2253A v2.6
100uf
October, 1999
Electronic Volume Controller
PT2253A
ORDER INFORMATION
Valid Part Number PT2253A Package Type Pins,
PT2253A v2.6
October, 1999
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