73M2901/3.3V

Advanced Single

Chip Modem

5

ELECTRICAL SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

Operation above maximum rating may permanently damage the device.

PARAMETER

RATING

Supply Voltage

-0.5V to +7.0V

Pin Input Voltage

-0.5V to VPD + 0.5V

Storage Temperature

-55ºC to 150°C

RECOMMENDED OPERATING CONDITIONS

PARAMETER

RATING

Supply Voltage

3.15V – 3.6V

Oscillator Frequency

11.0592MHz +/- 50ppm

Operating Temperature

-40C to +85°C

TRANSMITTER

PARAMETER

CONDITIONS

MIN

NOM

MAX

UNIT

ITU Guard Tone Power

550Hz (relative to carrier)

1800Hz (relative to carrier)

-5

-8

-3.5

-6.5

-2

-5

dB

dB

Calling Tone

1300Hz

-11

-9.0

dBm0

1

Answer Tone Power

2225/2100Hz

-11

-9.0

dBm0

1

DTMF Transmit Power

High band tones

Low band tones

-8.0

-10

-6.0

-8.0

dBm0

1

MAXIMUM TRANSMIT LEVELS

Vref =1.25V; VPA = 3.3V

QAM

-9.6

DPSK

-7.4

FSK

-5.3

DTMF (high tone)

-7.9

DTMF (low tone)

-9.8

DTMF (total)

-5.7

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 (475

Ω resistor), transformer, and solid state off-hook relay.