KA22427C
AM/FM 1 CHIP RADIO
INTRODUCTION
KA22427C is a monolithic integrated circuit designed for the portable
AM/FM radio or AM/FM clock radios.
16-DlP-300A
FUNCTIONS
• AM RF & MIX
• AM AGC
• AM/FM DET
• Regulator
•AM Local OSC
• AM/FM IF AMP
• Audio Power AMP
• FM AFC Control
FEATURE
• Portable AM/FM 1-chip radio
• Wide operating supply voltage range: VCC = 3V ~ 12V (Approximately)
(Depending on the internal regulator tolerance)
• Recommended operating suply voltage: VCC = 4.5V ~ 9V
ORDERING INFORMATION
Device
KA22427C
Package
16-DlP-300A
Operating Temperature
20°C ~+70°C
VCC
RL
8Ω
4.5V
O
6.0V
O
7.5V
O
9.OV
X
Line Operated
X
16Ω
O
O
O
O
X
45Ω
O
O
O
O
O
• On using AC line as an internal shunt regulator mode, it is possible to use low cost application without a
transformer (approximately 42mA).
• IF AMP gain is determined by DC voltage appeared at IC Pin 16.
• Power output: PO =0.28W (Min.) at THD =10% (VCC = 5.5V/8Ω).
BLOCK DIAGRAM
Fig. 1