CH1837A Cermetek Microelectronics, CH1837A Datasheet - Page 6

• Manufacturer Part Number: CH1837A
• Manufacturer: Cermetek Microelectronics

Specifications of CH1837A

• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Lead Free Status / Rohs Status: Supplier Unconfirmed

2004 Cermetek Microelectronics, Inc.
Cermetek Microelectronics, Inc.
Logic
Isolation Protection
Between TIP and RING
Surge Protection
Between TIP and RING
Transmission Insertion Loss
Frequency Response
(Ref=1800Hz Transit)
Distortion Noise-Transmit
Receive Gain
Receive Frequency Response
(Ref = 1800Hz Receive)
Receive 2
Harmonic Distortion
Noise-Receive
PSTN Line Input Impedance
On-Hook Impedance
Loop Current
Longitudinal Balance
Return Loss
(Zref=600ohm, 2.16µF)
Trans-Hybrid Loss
Transmit Input Impedance
Receive Output Impedance
Ring Select Sensitivity
Hook Switch Control Current
Weight
Supply Current
Ringer Equivalence
Input HIGH
Input LOW
Input Leakage HIGH
Input Leakage LOW
Output HIGH
Output LOW
Parameter
nd
/3
rd
/4
th
Table 3. CH1837A/8A Electrical Specifications.
IOH=0.05mA
IOL=2.0mA
CH1837A/8A
CH1837A/8A
Attenuation between the transmitter input
PSTN
termination (flat from 300-4kHz)
200-4kHz
-10dBm transmit power (600Hz)
Gain between PSTN line and receive output
at 1800Hz with 600 ohm resistive termination
(flat from 300-4kHz)
200-4kHz
-10dB at TIP and RING
400Hz-4kHz
At 1800Hz
48VDC from TIP to RING.
OH=0 (On-Hook)
OH=1 (Off-Hook)
1kHz
Attenuation between the transmitter input
and receiver output at 1kHz with 600ohm
complex termination
At 1800Hz
At 1800Hz
AC voltage between TIP and RING
Drive capable of sourcing current
V
V
Type A
CC
CC
=+5VDC±5%, Off-Hook
=+5VDC±5%, On-Hook
line
at
Conditions
1.8kHz
Page 6
with
600ohms
CH1837A/8A Data Access Arrangement Module
Document No. 607-0014 Revision C3 (02/04)
2.4
3.0
1500
2212
-0.8
-0.3
-0.5
-0.3
550
10
20
66
66
25
22
120
38
4
Min.
0.2A
Typ.
0
0
-82
600
20
25
150
10
20
5
100
0.4
500
-500
0.4
+0.8
+0.3
-82
+0.5
+0.3
-82
650
200
100
8
Max.
VAC RMS
mOhms
kOhm
Ohms
Units
Ohm
V
dBm
dBm
dBm
dBm
dBm
dBm
dBm
REN
dbm
V
mA
mA
mA
mA
gm
µA
µA
dB
dB
dB
Peak
V
V
V
V
rms