73M2901/3.3V
Advanced Single
Chip Modem
ELECTRICAL SPECIFICATIONS (continued)
TRANSMITTER
PARAMETER
CONDITIONS
MIN
NOM
MAX
UNIT
Gain Adjust
By step
-0.3
0
0.3
dB
Tolerance
Total Harmonic
Distortion (THD)
1Khz sine wave at output (TXAP-TXAN)
1.5Vpk(2.7dBm) for Vref=1.25V
-50
-33
dB
dB
THD = 2nd and 3rd harmonic.
Intermod Distortion
At output (TXAP-TXAN)
each unwanted
frequency
1.0kHz, 1.2 kHz sine waves summed
2.0Vpk for Vref=1.25V
component
Refer to CTR21 specification for complete
description of requirements
sum of
unwanted
dB
below
low
frequency
-20
components in
pass band
tone
Power Supply
Rejection Ratio
-30 dBm signal at VPA
300Hz – 30kHz. Measured TXAP to TXAN.
30.0
dB
RECEIVER
PARAMETER
Carrier Detect On
Carrier Detect Off
Carrier Detect Hysteresis
Receive Level
CONDITIONS
Tip and Ring
Tip and Ring
Tip and Ring
Tip and Ring
0.2kHz - 4.0kHz
MIN
-43.0
-48.0
NOM
MAX
UNIT
dBm01
dBm01
dB
2.0
-70
-43.0
-9.0
-65
dBm01
dB
Idle Channel Noise
6
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