73M2901CL
V.22bis Single Chip Modem
TRANSMITTER
PARAMETER
CONDITIONS
550Hz
(relative to carrier)
1800Hz
(relative to carrier)
1300Hz
2225Hz/2100Hz
High band tones
Low band tones
By step
1KHz sine wave at output
(TXAP-TXAN)
1.5Vpk(2.7dBm) for
Vref=1.25V
nd
rd
THD=2 and 3 harmonic
At output (TXAP-TXAN)
1KHz, 1.2KHz sine waves
summed
2Vpk for Vref=1.25V
-30dBm signal at VPA
300Hz-30KHz. Measured
TXAP to TXAN
MIN
-5
-8
-11
-11
-12
-13.7
-0.3
NOM
-3.5
-6.5
-10
-10
-11.5
-13.2
0
MAX
-2
-5
-9
-9
-11
-12.7
0.3
UNIT
dB
dB
dBm0
*
dBm0
*
dBm0
*
dBm0
*
dBm0
*
ITU Guard tone power
Calling Tone
Answer Tone power
DTMF Transmit power
Gain adjust tolerance
Total Harmonic Distortion
(THD)
-50
dB
Intermod Distortion
Each unwanted
frequency
component
Sum of unwanted
frequency
components in pass
band
-33
dBm
dB
below
low tone
dB
-20
Power supply rejection ratio
30
MAXIMUM TRANSMIT LEVEL
PARAMETER
QAM
DPSK
FSK
DTMF (HIGH TONE)
DTMF (LOW TONE)
*
CONDITIONS
Vref=1.25V
VPA=3.3V
Vref=1.25V
VPA=3.3V
Vref=1.25V
VPA=3.3V
Vref=1.25V S13=$20,
VPA=3.3V
VPA=3.3V
S85=80
Vref=1.25V S13=$20,
S85=80
MIN
NOM
MAX
-9.6
-7.4
-5.3
UNIT
dBm0
dBm0
dBm0
dBm0
*
*
*
-8
-9.7
-7
-8.7
*
dBm0
*
dBm0 refers to the TDK recommended line interface (8.5dB loss from transmit pins to the line and 3.5dB loss from the line to the receiver pin). Results
may vary depending on the selected DAA components. 0dBm=0.775mv
rms
; dBm=20log(V
rms
/(0.775mv
rms
)
6
TDK [ TDK ELECTRONICS ]
