Chip KXA058 - FM path. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Chip KXA058 - FM path. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / radio reception

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Microassembly КХА058 is designed for use in household portable radio-electronic equipment. Functionality - amplification, conversion and detection of the FM signal.

Electrical specifications

Parameter	Measurement modes	Min.	Type.	Max.	Ed. amend.
Supply voltage		3.2	7.5	10	В
Consumption current		5.8		10.9	mA
Output voltage		60			mV
Stabilizer output voltage		4.7		5.3	В
Stabilizer current consumption				7.0	mA
Antenna input sensitivity limited by noise	(s+w)/w-26dB f=108MHz df=±22,5kHz			15	uV
Harmonic coefficient	f=108MHz fm=1kHz df=±75kHz		2,3		%
Maximum ratio (signal + noise) / noise	UHF=100 µV f=108 MHz df=±75 kHz	50
AM suppression		30			db
Maximum input level		200			mV

Limit values

Supply voltage	Un	from 3,2 to 10 B
Power dissipation	Р	110 mW
Working temperature range	Trab	from -10 to +70°C
Storage and transport temperature	thr	from -60 to +85°C

Functional diagram

Chip KXA058 - FM path

Recommended Wiring Diagram

Chip KXA058 - FM path

Recommended connection scheme using a varicap and an extended AFC bandwidth

Chip KXA058 - FM path

The microassembly is made in a frameless version with a single row arrangement of 19 pins with a pitch of 2.5 mm.

Chip KXA058 - FM path

Pin functionality table

Pin number	Functional purpose
1	Stabilizer output
2	LO output
3	Varicap connection output
4	Food
5, 6, 10, 17, 19	Free
7, 9	Input inductor connection pin
8	RF input
11-14	General
15	AF output
16	Food
18	Stabilizer input

Author: NPK "Signal", PO "Horizon", A. Ivanov; Publication: N. Bolshakov, rf.atnn.ru

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