Marine VHF Audio and Signalling Processor
CMX885
9
Performance Specification
Electrical Performance
9.1
9.1.1 Absolute Maximum Ratings
Exceeding these maximum ratings can result in damage to the device.
Min.
Max.
4.5
4.5
Unit
V
V
V
V
Supply: DVDD- DVSS
−0.3
−0.3
−0.3
−0.3
−30
AVDD- AVSS
Voltage on any pin to DVSS
Voltage on any pin to AVSS
Current into or out of any power supply pin (excluding
VBIAS)
DVDD + 0.3
AVDD + 0.3
+30
mA
(i.e. VDEC, AVDD, AVSS, DVDD, DVSS)
Current into or out of any other pin
Voltage differential between power supplies:
DVDD and AVDD
+20
mA
−20
0
0
0.3
50
V
mV
DVSS and AVSS
Q3 Package (48-pin VQFN)
Total Allowable Power Dissipation at Tamb = 25°C
... Derating
Storage Temperature
Operating Temperature
Min.
–
–
−55
−40
Max.
1750
17.5
+125
+85
Unit
mW
mW/°C
°C
°C
L4 Package (48-pin LQFP)
Total Allowable Power Dissipation at Tamb = 25°C
... Derating
Storage Temperature
Operating Temperature
Min.
–
–
−55
−40
Max.
1600
16
+125
+85
Unit
mW
mW/°C
°C
°C
9.1.2 Operating Limits
Correct operation of the device outside these limits is not implied.
Notes
Min.
Max.
Unit
Supply Voltage:
DVDD – DVSS
AVDD – AVSS
3.0
3.0
3.6
3.6
V
V
VDEC – DVSS
Operating Temperature
XTAL/CLK Frequency (using a Xtal)
XTAL/CLK Frequency (using an external clock)
12
2.25
−40
3.0
2.75
+85
12.288
24.576
V
°C
MHz
MHz
11
11
3.0
11
12
Nominal XTAL/CLK frequency is 3.6864MHz.
The VDEC supply is automatically created from DVDD by the on-chip voltage
regulator.
Notes:
© 2010 CML Microsystems Plc
59
D/885/3
CMLMICRO [ CML MICROCIRCUITS ]
