FX828D2 CMLMICRO [CML Microcircuits], FX828D2 Datasheet - Page 30

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

CTCSS/DCS/SELCALL Processor
Notes:
© 2009 CML Microsystems Plc
Transmitter Modulator Drives:
Mod.1 Attenuator
Attenuation (at 0dB)
Cumulative Attenuation Error
Output Impedance
Input Impedance (at 100Hz)
Mod.2 Attenuator
Attenuation (at 0dB)
Cumulative Attenuation Error
Output Impedance
General Purpose Timer
Timing Period Range
Count Interval
Xtal/Clock Input
Pulse Width ('High' or 'Low')
Input Impedance (at 100Hz)
Gain (I/P = 1mVrms at 100Hz)
DAC
Range
Step Size
Step Accuracy
Input Impedance (COMPIN)
Output Impedance (COMPOUT)
(wrt attenuation at 0dB)
(wrt attenuation at 0dB)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. SUBAUDIO, SELCALL and DCS.
At V
At Tamb = 25°C, not including any current drawn from the device pins by external
circuitry.
Small signal impedance, at V
Timing for an external input to the XTAL/CLOCK pin.
With input gain components set as recommended in Figure 2.
IRQN pin.
From one tone to another tone.
See filter response (Figure 3).
Measured at MOD1 or MOD2 output.
DD
= 5.0V only. Signal levels or currents are proportional to V
DD
= 5.0V and Tamb = 25°C.
30
Notes
3
3
4
1
1
1
312.5
-30.0
Min.
40.0
10.0
20.0
-0.3
-1.0
-0.3
-0.6
1
-
-
-
-
-
-
-
312.5
Typ.
15.0
600
600
10
0
0
1
1
-
-
-
-
-
-
-
-
+30.0
DD
Max.
2500
255
0.2
1.0
0.2
0.6
-
-
-
-
-
-
-
-
-
-
.
Units
MΩ
MΩ
mV
mV
mV
kΩ
ms
ms
kΩ
dB
dB
dB
dB
dB
ns
Ω
Ω
D/828/4
FX828