CMX878D6 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'CMX878D6' PDF : 63 Pages View PDF
Line Powered Modem plus DAA
CMX878
1.7 Performance Specification
1.7.1 Electrical Performance
1.7.1.1 Absolute Maximum Ratings
Exceeding these maximum ratings can result in damage to the device.
Supply (AVDD - AVSS)
or (DVDD - DVSS)
Voltage on any pin to ground
Voltage on WAKE, RD, RT, VFB and
REGENAB pins to ground
Current into or out of VDD and VSS pins
Current into or out of any other pin
Notes
i
i, ii
i, iii
Min.
-0.3
-0.3
-0.3
-50
-20
Max.
7.0
Units
V
AVDD + 0.3 V
SBYVDD
V
+ 0.3
+50
mA
+20
mA
Notes:
i. The negative supply rails AVSS and DVSS (‘ground’) are electrically connected on-chip
and therefore must not have different potentials applied to them. They should also be
connected together externally, having regard to the recommended grounding techniques
described in Section 1.4. AVDD ≈ DVDD.
ii. Excludes pins which are connected to the Standby Supply (i.e. SBYVDD, WAKE, RD, RT,
VFB and REGENAB).
iii. It is possible that during the peaks of large ringing signals, the voltage at the RD pin
could exceed SBYVDD + 0.3V. This is acceptable because on-chip diode clamps will
limit the voltage to approximately SBYVDD + 0.7V and high value resistors should be
employed in the external circuit to limit the current.
Total Allowable Power Dissipation at Tamb = 25°C
D1 package
D6 package
E1 package
Min.
Max.
800
550
400
Units
mW
mW
mW
... Derating
D1 package
D6 package
E1 package
13
mW/°C
9
mW/°C
5.3
mW/°C
Storage Temperature
Operating Temperature
-55
+125
°C
-40
+85
°C
1.7.1.2 Operating Limits
Correct operation of the device outside these limits is not implied.
Supply (AVDD - VSS) or (DVDD - DVSS)
Operating Temperature
Notes
iv
Min.
2.7
-40
Max.
5.5
+85
Units
V
°C
Notes:
iv. The circuit shown in Figure 4a will give a regulated supply of nominally 3.3V which is
within the specified range.
© 2002 Consumer Microcircuits Limited
52
D/878/2
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