AK2360 Datasheet, PDF (4/10 Pages) Asahi Kasei Microsystems – Scrambler IC for two-way radio

ASAHI KASEI
[AK2360]
Pin Functions
Pin No. Pin name
1 AGND
2 AIN
3 VSS
4 CLK
5 VDD
Pin type
Function
AO
Analog ground output pin
A capacitor is connected to this pin to stabilize the analog ground level.
AI Audio signal input pin
PWR
AI
PWR
Negative power supply pin
Apply 0V.
Clock signal input pin
See "Recommended External Application Circuits".
Positive power supply pin
Connect this pin to a power supply ranging from 2.6V to 3.3V with less noise.
Connect a bypass capacitor of 0.1μF or higher between this pin and the VSS pin.
Carrier frequency switching pin
This pin changes the carrier frequency and voice passage band for the scrambler.
6 SLCT
DI
Input level Carrier frequency
High
3.376kHz
Voice passage band
290Hz to 3090Hz
Low
3.020kHz
260Hz to 2760Hz
*1)
Scrambler bypass pin
This pin causes the AAF block through LPF2 block to be bypassed. When
bypassed, these blocks are placed in the power-down state.
7 CNT
DI
Input level
High
Low
Setting
Scrambler enables.
Scrambler bypasses.
*1)
8 AOUT
AO Audio signal output pin
*2)
Note) A: Analog, D: Digital, PWR: Power, I: Input, O: Output
*1) A pull-up resistor of 50kΩ or more is included.
*2) Load impedance > 10kΩ, load capacitance < 50pF
MS0392-E-00
-4-
2005/05