
73K224L
V.22bis/V.22/V.21/Bell 212A/Bell 103
Single-Chip Modem
22
DYNAMIC CHARACTERISTICS AND TIMING
(continued)
PARAMETER
Anti Alias Low Pass Filter
CONDITION
MIN
NOM
MAX
UNIT
Level at RXA pin with receive
Boost Enabled
Scrambled data at 2400 bit/s
in opposite band
-14
dBm
Out of Band Signal Energy
(Defines Hybrid Trans- Hybrid
loss requirements)
Sinusoids out of band
-9
dBm
Transmit Attenuator
Range of Transmit Level
Default ATT=0100 (-10 dBm0) 1111-0000
-21
-6
dBm0
Step Accuracy
-0.15
+0.15
dB
Output Impedance
200
300
Clock Noise
TXA pin; 153.6 kHz
1.5
mVrms
Carrier Offset
Capture Range
Originate or Answer
±5
Hz
Recovered Clock
Capture Range
% of frequency (originate or
answer)
-0.02
+0.02
%
Guard Tone Generator
Tone Accuracy
550 Hz
+1.2
%
1800 Hz
-0.8
550 Hz
1800 Hz
-4.5
-7.5
-3.0
-6.1
-1.5
-4.5
dB
dB
Tone Level
(Below QAM/DPSK Output)
550 Hz
-50
dB
Harmonic Distortion
(700 to 2900 Hz)
1800 Hz
-50
dB