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Cermetek Microelectronics, Inc.
CH1817 Family of Low Profile DAA Modules
Table 2.
CH1817 DAA Electrical Specifications.
VCC=+5VDC ± 5%, TA=0° to 55°C
Parameter
Conditions
Min.
Typ.
Max.
Units
Supply Current
Off-Hook
Off-Hook
4
0.6
6
1.5
mA
mA
Transmission
Insertion Loss
Attenuation between transmit input and telephone line at
1800Hz with 600Ohm termination:
CH1817-L measured XMIT(+) with respect to GND
CH1817-DM measured XMIT(-) with respect to XMIT(+)
CH1817-LM measured XMIT(+) with respect to GND
CH1817-D measured XMIT(-) with respect to XMIT(+)
9.0
6.0
6.0
-0.5
9.5
6.5
6.5
0.0
10.0
7.0
7.0
0.5
dBm
dBm
dBm
dBm
Receive Gain
Gain between telephone line and receive output at
1800Hz with 600Ohm termination
-0.5
0.0
0.5
dBm
Telephone Line
Input Impedance
At 1800Hz
550
600
650
Ohm
Trans-Hybrid Loss
Attenuation between the transmitter input and receiver
output at 1800Hz with 600Ohm termination
18
23
dBm
Transmit Input
Impedance
At 1800Hz
120
150
200
kOhm
Receive Output
Impedance
At 1800Hz
100
1000
Ohm
Ring Detect
Sensitivity
AC voltage between Tip and Ring
38
Vrms
Ringer Equivalency
Number (REN)
Type “A”
0.2
A
Hook Switch Control
Current
4
mA
Loop current
20
80
mA
Weight
10
gm
Figure 6. Pin Connections.
2002 Cermetek Microelectronics, Inc.
Page 6
Document No. 607-0007 Revision B (01/02)
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