73M2901CE-IGV/F データシートの表示（PDF） - Teridian Semiconductor Corporation

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73M2901CE-IGV/F

V.22bis Single Chip Modem

Teridian Semiconductor Corporation 

73M2901CE Data Sheet

DS_2901CE_031

4.4 Transmitter

Parameter

ITU Guard tone power

Calling Tone

Answer Tone power

DTMF Transmit power

Gain adjust tolerance

Total Harmonic Distortion

(THD)

Intermod Distortion

Power supply rejection

ratio

Conditions

550 Hz (relative to carrier)

1800 Hz (relative to carrier)

1300 Hz

2225 Hz / 2100 Hz

High band tones

Low band tones

By step

1 kHz sine wave at output

(TXAP-TXAN)

1.5 Vpk (2.7 dBm) for

VREF=1.25 V

THD=2nd and 3rd harmonic

At output (TXAP-TXAN)

1 kHz, 1.2 kHz sine waves

summed

2 Vpk for VREF=1.25 V

-30 dBm signal at VPA

300 Hz to 30 kHz

measured TXAP to TXAN

Min

-5

-8

-11

-11

-12

-13.7

-0.3

Nominal

-3.5

-6.5

-10

-10

-11.5

-13.2

0

Each unwanted

frequency component

Sum of unwanted

frequency components

in pass band

Max

-2

-5

-9

-9

-11

-12.7

0.3

-50

-33

-20

30

4.5 Maximum Transmit Level

Parameter

QAM

DPSK

FSK

DTMF (High Tone)

DTMF (Low Tone)

Conditions

VREF=1.25 V

VPA=3.3 V

VREF=1.25 V

VPA=3.3 V

VREF=1.25 V

VPA=3.3 V

VREF=1.25 V S13=$20,

VPA=3.3 V S85=80

VREF=1.25V S13=$20,

VPA=3.3V S85=80

Min Nominal Max

-9.6

-7.4

-5.3

-8

-7

-9.7

-8.7

Units

dB

dB

dBm01

dBm01

dBm01

dBm01

dBm01

dB

dBm

dB

below

low tone

dB

Units

dBm01

dBm01

dBm01

dBm01

dBm01

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. 3.4

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