BA1448S datasheet, PDF - EEWORLD Datasheet

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BA1448S: DescriptionAM radio / FM IF stereo system IC; CategoryAnalog mixed-signal IC Consumption circuit; File Size171KB，9 Pages; ManufacturerROHM Semiconductor; Websitehttps://www.rohm.com/; Environmental Compliance

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BA1448S Overview

AM radio / FM IF stereo system IC

BA1448S Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Parts packaging code	DIP
package instruction	SDIP-24
Contacts	24
Reach Compliance Code	compli
Commercial integrated circuit types	AUDIO SINGLE CHIP RECEIVER
Demodulation type	AM/FM
harmonic distortion	0.6%
JESD-30 code	R-PDIP-T24
JESD-609 code	e3/e2
length	22.9 mm
Number of functions	1
Number of terminals	24
Maximum operating temperature	75 °C
Minimum operating temperature	-25 °C
Output voltage nominal (AM)	90 mV
Nominal output voltage (FM)	90 mV
Package body material	PLASTIC/EPOXY
encapsulated code	SDIP
Package shape	RECTANGULAR
Package form	IN-LINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	4.25 mm
Signal-to-noise ratio Nom (FM)	70 dB
Maximum slew rate	29 mA
Maximum supply voltage (Vsup)	8 V
Minimum supply voltage (Vsup)	3.8 V
surface mount	NO
Temperature level	COMMERCIAL EXTENDED
Terminal surface	TIN/TIN COPPER
Terminal form	THROUGH-HOLE
Terminal pitch	1.778 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	10
width	7.62 mm
Base Number Matches	1

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Audio ICs

AM radio / FM IF stereo system IC

BA1448S / BA1449F

The BA1448S and BA1449F are electronic tuning system ICs for AM, FM IF, and MPX. They have been developed for

use in radio cassette players and mini-component stereo systems.

The FM detector and MPX VCO circuits do not require adjustment, which will reduce the number of assembly line pro-

cesses. In particular, the VCO is laser locked, and requires no adjustment or external components. The characteristics

of the two chips are the same, but the packages are different (24-pin SDIP for the BA1448S and 24-pin SOP for the

BA1449F).

FApplications

Synthesized tuners in radio cassette players and mini-

component stereo systems.

FFeatures

1) Built-in mono AM radio, FM IF amplifier / detector,

and FM stereo demodulator.

2) DTS compatible (both SD and IF count).

3) Built-in reference voltage supply for good short-wave

band frequency stability.

4) Good FM stability.

5) FM detector does not require adjustment (ceramic

discriminator).

6) FM MPX VCO is laser locked and requires no ad-

justment or external components.

7) Built-in forced monaural function for the MPX (VCO

stops, LED off).

8) Audio can be low-cut to improve AM fidelity.

9) VCO for the MPX switches off during AM operation.

10) Mute possible for IF request.

FAbsolute

maximum ratings (Ta = 25_C)

FRecommended

operating conditions (Ta = 25_C)

354

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