AK2400 Datasheet, PDF (3/52 Pages) Asahi Kasei Microsystems – High integrated receiver for PMR-LMR

Block Diagram
[AK2400]
MCF
Matching
Network
/ Balun
Matching
Network
BIAS1
BIAS2
Matching
Network
RFIN
IREF
1st Mixer
LOINP
LOINN
LO Buffer
VCO
Loop
Filter
RFINP
RFINN
RFIN Buffer
18-bit Delta-Sigma
CPZ
Fractional-N
Frequency Synthesizer
SWIN
CP
BIAS3
PGA0
AGCCNT
IFBUF
2nd Mixer
AGC1+IFBPF+AGC2
LIMITER
ADC
12bits 1Msps
DISCRI
DIV3
Tripler Circuit
REFIN Buffer
DIVIDER
2nd LO Buffer
RSSI
Noise AMP
-
+
Noise
Rectifier
Comparator
AGND
VIREF
LDOA
LDOD
Digital Control Interface
AD_SDO
AD_SCLK
AD_CSN
PDOUT
DISCOUT
AUDIOOUT
NAIMPI
NAIMPO
NRECTO
DVDD
DETO/SDATAOUT
LD
SDATAIN
SCLK
CSN
LC
LC
Figure 1 Block Diagram
014008989-E-01
3
2015/4