AK2363 Datasheet, PDF (6/33 Pages) Asahi Kasei Microsystems – Radio Signaling LSI

ASAHI KASEI
[AK2363]
Pin No.
14
15
16
17
18
Pin name
VSS
XIN
XOUT
TEST
DTMFIN
Pin
Pin
type
status
at
power-
down
PWR
-
DI/AO *4)
AI
*4)
DI
Z
AI
Z
Function
VSS power supply pin
Always apply 0V.
Pin for connecting a crystal oscillator
A reference clock used within this IC is generated by connecting a
3.6864MHz oscillator between this pin and the adjacent XOUT
pin. For detailed information about the connection method and
the method for supplying an external clock, refer to
“Recommended External Circuit Examples.”
Pin for connecting a crystal oscillator
Test output pin
This pin is used as a test pin before shipment.
Normally, connect this pin to VSS.
DTMF signal input pin
19 RXINO
AO
20 RXIN
AI
21 AGND
AO
22 MOD
AO
23 MODIN
AI
24 MSKOUT AO
Z RXA amplifier output pin *1)
Demodulated receive signal input pin
Z _{Inverted input pin of the RXA amplifier. This pin, with resistors}
and capacitors externally connected, forms a pre-filter.
Analog ground output pin
*3) _{Connect a 0.1mF capacitor between this pin and the VSS pin to}
stabilize the analog ground level.
Z Modulated transmit signal output pin *2)
Modulated transmit signal input pin
Z _{Inverted input pin of the TXA amplifier. This pin, with a resistor}
and capacitor externally connected, forms a smoothing filter.
Z MSK signal level output pin *1)
Note A: Analog, D: Digital, PWR: Power, I: Input, O: Output, B: Bidirectional, Z: High-Z, L: Low
*1) Output load requirement: Load impedance > 30kΩ, load capacitance < 15pF
*2) Output load requirement: Load impedance > 10kΩ, load capacitance < 50pF
*3) AGND level
*4) The XIN pin output level is determined by the XOUT pin input level.
MS0583-E-01
-6-
2008/06