CH1837A Datasheet, PDF (6/9 Pages) List of Unclassifed Manufacturers – CH1837A/7F/8A Data Access Arrangement Module V.34bis High Speed DAA Module

Cermetek Microelectronics, Inc.
CH1837A/7F/8A Data Access Arrangement Module
Parameter
Logic
Input HIGH
Input LOW
Input Leakage HIGH
Input Leakage LOW
Output HIGH
Output LOW
Table 3. CH1837A/7F/8A Electrical Specifications.
Conditions
Min. Typ. Max.
IOH=0.05mA
IOL=2.0mA
2.4
0.4
500
-500
3.0
0.4
Units
V
V
µA
µA
V
V
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^nd/3^rd/4^th
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
CH1837A/7F/8A
1500
CH1837A/7F/8A
2212
Attenuation between the transmitter input
PSTN line at 1.8kHz with 600ohms -0.8
termination (flat from 300-4kHz)
200-4kHz
-0.3
-10dBm transmit power (600Hz)
Gain between PSTN line and receive output -0.5
at 1800Hz with 600 ohm resistive termination
(flat from 300-4kHz)
200-4kHz
-0.3
-10dB at TIP and RING
400Hz-4kHz
At 1800Hz
550
10
48VDC from TIP to RING.
20
OH=0 (On-Hook)
66
OH=1 (Off-Hook)
66
1kHz
25
Attenuation between the transmitter input 22
and receiver output at 1kHz with 600ohm
complex termination
At 1800Hz
120
At 1800Hz
AC voltage between TIP and RING
38
Drive capable of sourcing current
4
V_CC=+5VDC±5%, Off-Hook
V_CC=+5VDC±5%, On-Hook
Type A
0 +0.8
+0.3
-82
0 +0.5
+0.3
-82
-82
600 650
20
100
25
150 200
10 100
20
8
5
0.2A
VAC RMS
V_Peak
dB
dBm
dBm
dB
dBm
dBm
dBm
Ohm
mOhms
mA
dBm
dbm
dBm
dB
kOhm
Ohms
V_rms
mA
gm
mA
mA
REN
2002 Cermetek Microelectronics, Inc.
Page 6
Document No. 607-0014 Revision C2 (12/02)