AK2365A

FM IF Detector with Narrow Band Filter

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Description

Two-way Radio ICs
The AK2365A includes 2nd-Mixer, AGC+BPF, PLL FM detector, noise squelch, and RSSI circuit.
This device can eliminate E to J type ceramic filters, quadrature discriminator, and other external components.

(1)Eliminates external IF ceramic filter
"minimize PCB area" and "improve drop impact resistance"
(2)Selectable filter bandwidth by register control
(3)Very small temperature drift and device variation of frequency response

Key Features

(1)Low operating voltage: VDD = 2.6 to 5.5 V
(2)Wide operating temperature: Ta = -40 to 85 °C
(3)High sensitivity: -102dBm at 12dB SINAD *De-emphasis + BPF
(4)Built-in PGA and 2nd Mixer
(5)Local frequency: 45.9MHz, 50.4MHz, 57.6MHz (Triple of 15.3, 16.8 and 19.2MHz)
(6)Built-in programmable AGC+BPF circuits corresponding to E to J type ceramic filters
(7)Built-in PLL FM detector
(8)RSSI function
(9)Built-in noise squelch circuits
(10)Low consumption current: 6mA
(11)Compact plastic packaging: 32-pin QFNJ (4.0 x 4.0 x 0.75mm, 0.4mm pitch)

Applications
(1)Narrowband high performance professional digital wireless systems
   (Channel spacing for 6.25kHz,12.5kHz)
(2)Digital convenience radio systems

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Block Diagram

Block Diagram

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