BDM-610000075
Rev B
Chapter 1: Introduction
13
Serial Ports - RS-422/485
V
OD1
Differential Output
R
L
= 50 Ohm
2.0 V
6.0 V
V
OD2
Differential Output
R
L
= 27 Ohm
1.5 V
6.0 V
V
OC
Common Mode
Output
R
L
= 27 or 50
Ohm
0.0 V
3.0 V
V
TH
Differential Input
Threshold
-7V < V
CM
< 7V
-0.3 V
0.3 V
V
I
Absolute Max Input
Voltage
—
-25 V
25 V
aDIO
V
OH
Output Voltage High
I
OH
= –4.0 mA
2.4 V
3.3 V
V
OL
Output Voltage Low
I
OL
= 8.0 mA
0.0 V
0.4 V
V
IH
Input Voltage High
1
—
2.0 V
5.5 V
V
IL
Input Voltage Low
—
-0.5 V
0.8 V
I
ADIOvcc
Supply current
—
500 mA
aAIO
V
IH
Absolute maximum
Input Voltage
+25 V
V
IL
Absolute minimum
Input Voltage
-25 V
Input Impedance
Unipolar
Bipolar
42 k
Ω
typical
31 k
Ω
typical
Audio
Full Scale Output
Voltage
1 V
RMS
External Load
Impedance
Line Output
10 k Ohms
External Load
Impedance
Headphone
Output
32 Ohms
External Load
Capacitance
1000pF
Full Scale Input
Voltage
0 dB Boost
10 dB Boost
20 dB Boost
30 db Boost
1.000 V
RMS
0.316 V
RMS
0.100 V
RMS
0.032 V
RMS
Input Impedance
20 k Ohm
Input Capacitance
7.5pF
Utility Port Connector (CN5)
V
RTC
Input RTC Voltage
2
—
2.0V
3.6 V
I
UTILvcc
Utility Supply
Current
—
500 mA
1. Maximum DC undershoot below ground must be limited to either 0.5V or 10mA. During
transitions, the device pins may undershoot to -2.0V or overshoot to 7.0V, provided it is less
than 10ns, with the forcing current limited to 200 mA.
2. Only required to maintain date and time when power is completely removed from the system.
Not required for board operation.
Table 4
Electrical Characteristics
Symbol
Parameter
Test Condition
Min.
Max.
Summary of Contents for BDM-610000075
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