CMX838D1 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'CMX838D1' PDF : 71 Pages View PDF
FRS/PMR446/GMRS Family Radio Processor
CMX838
TONE SIGNALING CONTROL ($93): 01010000b = $50
• Enable power for subaudio section (01)
• IRQ when detect status change (01)
• Load ‘enable/disable tone detector’ task (0000)
SUBAUDIO ANALOG CONTROL ($97): 00010000 00010000b = $1010
• Rx Input passed to subaudio filter input (0)
• Subaudio LPF gain set to +20dB (default for Rx mode) (0)
• Subaudio LPF configured as 65Hz high pass DC blocking filter (0)
• Tx subaudio level set to 0.0dB (10000)
• Tx subaudio filter gain counter set to 0 for normal operation (0)
• Subaudio filter configuration set to 0 for normal operation (0)
• DC restoration set to 0 for normal operation (0)
• Rx subaudio level set to 0.0dB (10000)
7 Performance Specification
7.1 Electrical Performance
7.1.1 Absolute Maximum Ratings
Exceeding these maximum ratings can result in damage to the device.
Supply (VDD - VSS)
Voltage on any pin to VSS
Current
VDD
VSS
Any other pin
E1 Package
Total Allowable Power Dissipation at TAMB = 25°C
Derating above 25°C
Storage Temperature
Operating Temperature
D1 Package
Total Allowable Power Dissipation at TAMB = 25°C
Derating above 25°C
Storage Temperature
Operating Temperature
Min.
-0.3
-0.3
Max.
7.0
VDD + 0.3
-30
+30
-30
+30
-20
+20
Units
V
V
mA
mA
mA
400
mW
5.3
mW/°C above 25°C
-55
+125
°C
-40
+85
°C
550
mW
9
mW/°C above 25°C
-55
+125
°C
-40
+85
°C
7.1.2 Operating Limits
Correct operation of the device outside these limits is not implied.
Supply (VDD - VSS)
Operating Temperature
Notes
Min.
2.7
-40
Max.
5.5
+85
Units
V
°C
2003 CML Microsystems Plc
64
D/838/8
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