ba3304f ROHM Co. Ltd., ba3304f Datasheet

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ba3304f

Manufacturer Part Number
ba3304f
Description
Dual Preamplifier
Manufacturer
ROHM Co. Ltd.
Datasheet

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Manufacturer
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Part Number:
BA3304F
Manufacturer:
ROHM/罗姆
Quantity:
20 000
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Part Number:
BA3304F
Quantity:
100
The BA3304F is a monolithic, dual-preamplifier IC designed for 3V applications. It has been designed especially for low-
voltage operation.
The preamplifiers can be directly coupled to the head to minimize the “pop” noise at power on. When combined with the
Rohm BA5204, it is a simple matter to design a high-performance circuit for cassette players.
FApplications
3V headphone stereos, 3V micro-cassette players and
low-voltage stereo equipment
FFeatures
1) Low noise (V
2) Input coupling capacitors not required.
3) No input coupling capacitors means high bass stabil-
4) Good channel balance.
FBlock diagram
178
3V dual preamplifier
BA3304F
Audio ICs
ity.
NIN
= 1.2 V
rms
).
5) Built-in bias circuit minimizes “pop” noise.
6) Emitter-follower output for low output impedance.
7) Good low voltage characteristics (operation possible
from Typ. 1.2V).

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ba3304f Summary of contents

Page 1

... Audio ICs 3V dual preamplifier BA3304F The BA3304F is a monolithic, dual-preamplifier IC designed for 3V applications. It has been designed especially for low- voltage operation. The preamplifiers can be directly coupled to the head to minimize the “pop” noise at power on. When combined with the Rohm BA5204 simple matter to design a high-performance circuit for cassette players. ...

Page 2

... The second stage uses Darlington pairs to increase the input impedance and the gain of the first stage. The out- put is an emitter follower which suppresses deterioration of the linearity due to the influence of the equalizer termi- nal, and prevents drop in maximum output. = 3V, f= 1kHz and BA3304F 179 ...

Page 3

... R and R determines the bass cutoff frequency and C and C : equalizer terminal (NAB These components set the time constant for normal tape (120 s), and the tape speed to 4.75cm / s. The gain is 33dB at 1kHz. BA3304F ...

Page 4

... Capacitive loads The BA3304F has an emitter-follower output, so oscilla- tion is apt to occur if the load is capacitive (if the capaci- tance of the load exceeds 150pF with V will occur). Oscillation is apt to occur if the closed-loop gain ( lower than 30dB 1kHz ...

Page 5

... Audio ICs FElectrical characteristics curves 182 BA3304F ...

Page 6

... Audio ICs FExternal dimensions (Units: mm) BA3304F 183 ...

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