Datasheet

73M2901CE Data Sheet DS_2901CE_031
10 Rev. 3.4
4.4 Transmitter
Parameter Conditions Min Nominal Max Units
ITU Guard tone power 550 Hz (relative to carrier) -5 -3.5 -2 dB
1800 Hz (relative to carrier) -8 -6.5 -5 dB
Calling Tone 1300 Hz -11 -10 -9 dBm0
1
Answer Tone power 2225 Hz / 2100 Hz -11 -10 -9 dBm0
1
DTMF Transmit power High band tones -12 -11.5 -11 dBm0
1
Low band tones -13.7 -13.2 -12.7 dBm0
1
Gain adjust tolerance By step -0.3 0 0.3 dBm0
1
Total Harmonic Distortion
(THD)
1 kHz sine wave at output
(TXAP-TXAN)
1.5 Vpk (2.7 dBm) for
VREF=1.25 V
THD=2
nd
and 3
rd
harmonic
-50 dB
Intermod Distortion At output (TXAP-TXAN)
1 kHz, 1.2 kHz sine waves
summed
2 Vpk for VREF=1.25 V
Each unwanted
frequency component
-33 dBm
Sum of unwanted
frequency components
in pass band
-20 dB
below
low tone
Power supply rejection
ratio
-30 dBm signal at VPA
300 Hz to 30 kHz
measured TXAP to TXAN
30 dB
4.5 Maximum Transmit Level
Parameter Conditions Min Nominal Max Units
QAM VREF=1.25 V
VPA=3.3 V
-9.6 dBm0
1
DPSK VREF=1.25 V
VPA=3.3 V
-7.4 dBm0
1
FSK VREF=1.25 V
VPA=3.3 V
-5.3 dBm0
1
DTMF (High Tone) VREF=1.25 V S13=$20,
VPA=3.3 V S85=80
-8 -7 dBm0
1
DTMF (Low Tone) VREF=1.25V S13=$20,
VPA=3.3V S85=80
-9.7 -8.7 dBm0
1
1
dBm0 refers to the Teridian recommended line interface (8 dB loss from transmit pins to the line and
5 dB loss from the line to the receiver pin). Results may vary depending on the selected DAA
components. 0dBm=0.775 mV
rms
; dBm=10log(V
rms
2
/(1mW)(600Ω)).