FX828D2 CMLMICRO [CML Microcircuits], FX828D2 Datasheet - Page 5

• Manufacturer Part Number: FX828D2
• Description: CTCSS/DCS/SELCALL Processor
• Manufacturer: CMLMICRO [CML Microcircuits]

CTCSS/DCS/SELCALL Processor
1.3
© 2009 CML Microsystems Plc
D2/D5/P4
Package
Pin No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
8
9
Signal List
Notes: I/P
COMPOUT
COMPIN
A/D CAP 1
A/D CAP 2
V ss
V
RX AMP IN
RX AMP OUT
RX AUDIO OUT
TX AUDIO OUT
SUM IN
SUM OUT
MOD1 IN
TX SUB AUDIO OUT
MOD1
MOD2
V
BIAS
DD
O/P =
Name
(continued)
=
Signal
Input
Output
Power
Power
Type
O/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
O/P
I/P
I/P
I/P
I/P
The output of the comparator.
The input to the comparator.
An internal reference voltage for the CTCSS A
to D. Decouple to V
capacitor.
An internal reference voltage for the DCS A to
D. Decouple to V
The negative supply rail (ground).
A bias line for the internal circuitry, held at ½
V
mounted close to the device pins.
The inverting input to the Rx input amplifier.
The output of the Rx input amplifier and the
input to the audio filter section.
Output of the Rx audio filter section.
Output of the selcall tone generator.
Input to the audio summing amplifier.
Output of the audio summing amplifier.
Input to MOD1 audio gain control.
Output of the CTCSS or DCS Tx tone generator.
Output of MOD1 audio gain control.
Output of MOD2 audio gain control.
The positive supply rail. Levels and voltages are
dependent upon this supply. This pin should be
decoupled to V
DD
5
. This pin must be decoupled by a capacitor
SS
SS
by a capacitor.
Description
SS
with an external capacitor.
with an external
D/828/4
FX828