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UNISONIC TECHNOLOGIES CO., LTD BA3308
Preliminary LINEAR INTEGRATED CIRCUIT
DUAL PREAMPLIFIER WITH ALC
DESCRIPTION
The UTC BA3308 is designed to have dual preamplifier ICs with built - in ALC circuits for use in stereo amplification. The preamplifiers have high gain and low distortion. A built-in rectifier for ALC circuit implies good channel balance and large dynamic range can be constructed with addition of just an external time constant circuit. SIP-9
FEATURES
* Wide operating power supply voltage range (VCC =4.5V ~ 14V) * Power-on mute circuit to avoid "pop" noise generation. * No input coupling capacitors are necessary * High gain (GVO=80dB)and low noise (VNIN=1Vrms) * Low distortion (THD=0.1%) * Good ALC channel balance with built-in ALC rectifier diode * Adjustable ALC dynamic range by external input resistor.
SOP- 14
ORDERING INFORMATION
Ordering Number Lead Free BA3308L-G09-T BA3308L-S14-R BA3308L-S14-T Halogen Free BA3308G-G09-T BA3308G-S14-R BA3308G-S14-T Package SIP-9 SOP-14 SOP-14 Packing Tube Tape Reel Tube
www.unisonic.com.tw Copyright (c) 2011 Unisonic Technologies Co., Ltd
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BA3308
BLOCK DIAGRAM
Preliminary
LINEAR INTEGRATED CIRCUIT
SIP-9
SOP-14
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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BA3308
PARAMETER Power Supply Voltage Power Dissipation Derating above Ta = 25
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (Ta = 25)
SYMBOL VCC SIP-9 SOP-14 SIP-9 SOP-14 PD TOPR TSTG RATINGS 16 950 450 9.5 4.5 0 ~ +85 -65 ~ +125 UNIT V mW /mW
Operating Temperature Storage Temperature
RECOMMENDED OPERATING CONDITIONS (Ta = 25)
PARAMETER SYMBOL Power Supply Voltage VCC Note: This IC is not designed to be radiation-resistant. RATINGS +4.5~ +14 UNIT V
ELECTRICAL CHARACTERISTICS
(Ta =25, VCC =7.0V, f =1kHz and BPF: 20Hz ~ 20kHz, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITIONS Maximum Output Voltage VOM THD=1% Conversion with Rg=2.2k and Input Conversion Noise Voltage VNIN NAB34dB at 1kHz Quiescent Current IQ VIN =0Vrms Input Resistance RIN Total Harmonic Distortion THD NAB34dB, VOUT =40mVrms Open Loop Voltage Gain GVO VOUT = -10dBV RG =3.9k, VIN =-70dBV ALC Range ALC reference, THD=3% ALC Channel Balance ALC VIN = -60dBV, -30dBV Channel Separation CS VO =0dBV, NAB34dB MIN 0.6 TYP 1.2 1.0 1.5 15 70 40 60 3.3 31.5 0.1 80 70 0 75 2.5 MAX 2.0 4.5 45 0.3 UNIT Vrms Vrms mA k % dB dB dB dB
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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BA3308
Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
MUTE ch1 + ch2 +
ALC
1 R5 18k R3 39 C3 100F + R1 3.9K
2
3
4 R7 1M C5 10F
5 + C7 22F
6 +
7 C8 330F + C6 10F
8
9
R8 220 Vcc 7V R4 39
+ + C1 10F
R2 3.9k
R6 18k + C2 10F +
C4 100F
INPUT1 OUTPUT1
OUTPUT2 INPUT2
R9 (R10) R11(R12) 120k 4.3k
For playback,instead of R5 and R6,connect the following NAB time constant circuit between pins 1 and 3 and 7 and 9.
C9 (C10) 0.027F
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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