S1T8528X0 SAMSUNG [Samsung semiconductor], S1T8528X0 Datasheet - Page 2

• Manufacturer Part Number: S1T8528X0
• Description: ENHANCED-1 CHIP CT0 RF IC
• Manufacturer: SAMSUNG [Samsung semiconductor]

S1T8528
BLOCK DIAGRAM
2
GND
(PLL)
1MO
1LOI
1LOI
VCO
RX
V
PDR
(RF)
2LOI
V
(PLL)
1MI
1MI
TIF
REF
REF
46
47
48
37
39
40
41
42
43
44
45
38
Internal
X-tal
OSC
cap.
36
RX Phase
Detector
VCO
RX
PLL Regulator
Programmable Counter ( REF )
Programmable Counter ( TX )
Programmable Counter ( RX )
( 2.05 V )
MIX
1st
(455KHz)
IF AMP
2nd
MIX
35
4_25 CNT
1
TX Phase
Detector
(10.7MHz)
IF AMP
2
VCC
34
3
(RX)
33
Splatter
Filter
4
Carrier
Detector
Limiting
IF AMP
32
RSSI
5
31
Buffer
fMCU
6
Quadrature
Detector
30
Low
Battery
Detector
7
29
CONTROL
AMP
8
28
Limiter
Volume control
9
Gain Cell
Rectifier
27
FSK
COMP
10
Gain Cell
Rectifier
ENHANCED-1 CHIP CT0 RF IC
26
SPK
AMP1
11
SUM
AMP
25
PRE AMP
Regulator
ALC
12
(Vcc/2)
MIC
AMP
SUM
AMP
SPK
AMP2
Compander
+
-
+
mute
-
VREF
VREF
24
23
22
21
20 EO
19
18
17
16
15
14
13
V
(COMP)
ALC
EPI
ERC
SAI
SAO1
SAO2
VCC
(COMP)
GND
(COMP)
CPI
CPO
REF