AK2364 Datasheet, PDF (5/26 Pages) Asahi Kasei Microsystems – Two-way Radio Filterless FM Detector LSI

5. Pin/Function
[AK2364]
Package
Pin No
Name
1 MIXIP
Signal
Type
AI
Conditions
at power
down
Z
Function
IF positive signal input pin
2 AVSS
PWR
-
Analog ground pin
3 VREFA
AI
H
Output pin to connect capacitor for LDO
4 AVDD
PWR
-
Analog VDD power supply pin
5 NC
AIO
Z
NC pin
6 NC
AIO
Z
NC pin
7 NC
AIO
Z
NC pin
8 NC
AIO
9 RSSIOUT
AO
10 PDOUT
AO
Z
NC pin
Z
Output pin to connect capacitor for Received Signal Strength
Indicator(RSSI)
Z
Pin1 for DISCRIMINATOR Low-pass filter
11 DISCOUT
AO
Z
PIN2 for DISCRIMINATOR Low-pass filter
12 AUDIOOUT AO
Z
Demodulated audio signal output pin
13 NAMPI
AI
Z
Input pin for noise squelch amplifier
14 NAMPO
AO
Z
Output pin for noise squelch amplifier
15 NRECTO
AI
Z
Output pin for the rectification circuit
16 BIAS
AO
17 AGNDOUT AO
18 AGNDIN
AI
19 VSS2
20 RSTN
PWR
DI
Z
Output pin to connect bias resistor for reference voltage
Z
Analog ground output pin.
Connect the capacitor to stabilize the analog ground level.
Z
Analog ground input pin.
Connect the capacitor to stabilize the analog ground level.
-
VSS power supply pin.
Normally supply 0V to this pin.
Z
Hardware reset pin
21 CSN
DI
Z
Chip select input pin for serial data
22 SCLK
DI
Z
Clock input pin for serial data
23 SDATA
DB
-
Input and output pin for serial data
24 DETO
DO
Z
Signal detect output pin
25 DVDD
PWR
-
Digital VDD power supply pin.
26 DVSS
PWR
-
Digital ground pin
27 LOCAP
AI
Z
Local signal input pin
28 LOIN
AI
Z
Local signal input pin
Note:
A: Analog, D: Digital, PWR: Power, I: Input, O: Output, B: Bidirectional, Z: High-Z, L: Low
When you use AK2364 in AVDD=2.6 to 3.6V operation, VREFA pin is connected to AVDD pin for
power supplying. Please set LDO (Low Drop Out) power off setting.
When VREFA pin is supplied by external power supply, absolute maximum ratings and recommended
operating conditions are based on AVDD level.
MS1431-E-01
-5-
2012/10