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PDF AK2365 Data sheet ( Hoja de datos )
| Número de pieza | AK2365 | |
| Descripción | dPMR Filterless IF LSI | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK2365]
AK2365
dPMR Filterless IF LSI
1. Features
The AK2365 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.
• Low operating voltage: VDD = 2.6 to 5.5 V
• Wide operating temperature: Ta = -40 to 85 °C
• High sensitivity: -102dBm at 12dB SINAD
• Built-in PGA and 2nd Mixer
• Local frequency: 45.9MHz, 50.4MHz, 57.6MHz (Triple of 15.3, 16.8 and 19.2MHz)
• Built-in programmable AGC+BPF circuits corresponding to E to J type ceramic filters
• Built-in PLL FM detector
• RSSI function
• Built-in noise squelch circuits
• Low consumption current: 6mA
• Compact plastic packaging: 32-pin QFNJ （ 4.0 x 4.0 x 0.75mm, 0.4mm pitch）
MS1453-E-01
-1-
2 012/10
http://www.Datasheet4U.com
1 page  
[AK2365]
5. Pin/Function
Package
Signal
Pin No Name Type
1 IFIP AI
2 NC AIO
3 NC AIO
4 NC AIO
5 NC AIO
6 VREFA AO
7 AVSS PWR
8 AVDD PWR
9 BIAS AO
10 NRECTO AI
11 NAMPO AO
12 NAMPI AI
13 AUDIOOUT AO
14 DISCOUT AO
15 PDOUT AO
16 RSSIOUT AO
17 IFOUT AO
18 AVSS2 PWR
19 PDN DI
20 RSTN DI
21 CSN DI
22 SCLK DI
23 SDATA DB
24 DETO DO
25 DVDD PWR
26 DVSS PWR
27 VREFD AO
28 AVSS3 PWR
29 AGNDOUT AO
30 AGNDIN AI
31 LOCAP AI
32 LOIN AI
Conditions
at power
down
Note 1)
Z
Z
Z
Z
Low
-
-
Z
Note 2)
Z
Z
Note 3)
Note 4)
Z
Z
Note 5)
-
Z
Z
Z
Z
Z
Z
-
-
Low
-
Low
Low
Note 6)
Note 6)
Function
IF signal input pin
NC pin
NC pin
NC pin
NC pin
LDO re ference pin
Connect the capacitor to stabilize LDO reference voltage.
Analog VSS power supply pin
Analog VDD power supply pin
Output pin to connect bias resistor for reference voltage
Output pin for the rectification circuit
Output pin for noise squelch amplifier
Input pin for noise squelch amplifier
Demodulated audio signal output pin
Pin2 for Discriminator Low-pass filter
Pin1 for Discriminator Low-pass filter
Output pin to connect capacitor for Received Signal Strength
Indicator(RSSI)
Output pin for IFBUF
Analog VSS power supply pin
Power down pin for LDO
Hardware reset pin
Chip select input pin for serial data
Clock input pin for serial data
Input and output pin for serial data
Signal detect output pin
Digital VDD power supply pin.
Digital VSS power supply pin.
LDO re ference pin
Connect the capacitor to stabilize LDO reference voltage.
Analog VSS power supply pin
Analog ground output pin.
Connect the capacitor to stabilize the analog ground level.
Analog ground input pin.
Connect the capacitor to stabilize the analog ground level.
Local signal input pin
Local signal input pin
Note A: Analog, D: Digital, PWR: Power, I: Input, O: Output, B: Bidirectional, Z: High-Z, L: Low
Note 1) Connecting internally to VSS pin by 50kΩ
Note 2) Connecting internally to VDD pin by 720kΩ
Note 3) Connecting internally to VSS pin by 830kΩ
MS1453-E-01
-5-
2 012/10
5 Page 
10. Power-up Sequence
[AK2365]
PDN (LDO)
On-chip LDO
(1.8V operation)
RSTN
Write to the register
700μs 1μs
The register can be written
1.8V
Internal register values are set.
Note) After PDN is set to “High”, registers remain undefined. In order to initialize them, RSTN is
set to “High”
11. System Reset
Parameter Symbol
Condition
Hardware reset signal
input width
tRSTN RSTN
pin
Software reset
SRST
register
Min.
1
Typ.
Max.
Unit Remarks
µs *1)
*2)
*1) After power-on, be sure to perform a hardware reset operation (register initialization). The
system is reset by a low pulse input of 1μs (min.) and enters the normal operation state. At this
moment, the digital (DI) pins are set as follows: RSTN pin to High, SCLK pin to Low, SDATA pin
to Low, CSN pin to Low.
tRSTN
RSTN
VIH
VIL
*2) When data 0x04:10101010 is written to the SRST[7:0] register, software reset is performed.
This setting initializes the registers and the operation mode is set to mode 2 (Standby 2).
After software reset is completed, this register comes to “0”.
MS1453-E-01
- 11 -
2 012/10
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK2365.PDF ] | |
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