73M2901CE Data Sheet
DS_2901CE_031
4.4 Transmitter
Parameter
Conditions
Min
-5
Nominal
-3.5
Max
Units
dB
ITU Guard tone power
550 Hz (relative to carrier)
1800 Hz (relative to carrier)
1300 Hz
-2
-5
-8
-6.5
dB
Calling Tone
-11
-11
-12
-13.7
-0.3
-10
-9
dBm01
dBm01
dBm01
dBm01
dBm01
dB
Answer Tone power
DTMF Transmit power
2225 Hz / 2100 Hz
High band tones
Low band tones
By step
-10
-9
-11.5
-13.2
0
-11
-12.7
0.3
-50
Gain adjust tolerance
Total Harmonic Distortion 1 kHz sine wave at output
(THD)
(TXAP-TXAN)
1.5 Vpk (2.7 dBm) for
VREF=1.25 V
THD=2nd and 3rd harmonic
Intermod Distortion
At output (TXAP-TXAN)
1 kHz, 1.2 kHz sine waves
summed
Each unwanted
frequency component
-33
-20
dBm
Sum of unwanted
frequency components
in pass band
dB
below
low tone
2 Vpk for VREF=1.25 V
Power supply rejection
ratio
-30 dBm signal at VPA
300 Hz to 30 kHz
30
dB
measured TXAP to TXAN
4.5 Maximum Transmit Level
Parameter
Conditions
Min
Nominal
Max
Units
dBm01
QAM
VREF=1.25 V
VPA=3.3 V
-9.6
DPSK
VREF=1.25 V
VPA=3.3 V
-7.4
-5.3
-7
dBm01
dBm01
dBm01
dBm01
FSK
VREF=1.25 V
VPA=3.3 V
DTMF (High Tone)
DTMF (Low Tone)
VREF=1.25 V S13=$20,
-8
VPA=3.3 V
VREF=1.25V S13=$20,
VPA=3.3V S85=80
S85=80
-9.7
-8.7
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 mVrms
;
dBm=10log(Vrms2/(1mW)(600Ω))
10
Rev. 3.3
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
