73M2901/3.3V
Advanced Single
Chip Modem
ELECTRICAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Operation above maximum rating may permanently damage the device.
PARAMETER
Supply Voltage
RATING
-0.5V to +7.0V
Pin Input Voltage
Storage Temperature
-0.5V to VPD + 0.5V
-55ºC to 150°C
RECOMMENDED OPERATING CONDITIONS
PARAMETER
RATING
Supply Voltage
3.15V – 3.6V
Oscillator Frequency
Operating Temperature
11.0592MHz +/- 50ppm
-40C to +85°C
TRANSMITTER
PARAMETER
ITU Guard Tone Power
CONDITIONS
MIN
-5
-8
-11
-11
-8.0
-10
NOM
-3.5
-6.5
MAX
-2
-5
-9.0
-9.0
-6.0
-8.0
UNIT
dB
550Hz (relative to carrier)
1800Hz (relative to carrier)
1300Hz
2225/2100Hz
High band tones
Low band tones
dB
Calling Tone
Answer Tone Power
DTMF Transmit Power
dBm01
dBm01
dBm01
MAXIMUM TRANSMIT LEVELS
Vref =1.25V; VPA = 3.3V
QAM
-9.6
-7.4
-5.3
-7.9
-9.8
-5.7
DPSK
FSK
DTMF (high tone)
DTMF (low tone)
DTMF (total)
Note: The recommended DAA (see the TDK 73M2901 Reference Manual) will result in approximately 8dB loss from the transmit pins to the
phone line. This includes the loss through the line matching impedance (475Ω resistor), transformer, and solid state off-hook relay.
1 dBm0 refers to the TDK recommended DAA ( 8dB loss from Transmit pins to the line and 5dB loss from the line to the Receive pin). Results
may vary depending on selected DAA. 0dBm = 0.775Vrms. dBm = 10log {Vrms2/[(1mW)(600Ω)]}
5
TDK [ TDK ELECTRONICS ]
