73M2901/5V 데이터 시트보기 (PDF) - TDK Corporation

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73M2901/5V

Advanced Single Chip Modem

TDK Corporation 

ELECTRICAL SPECIFICATIONS (continued)

TRANSMITTER

PARAMETER

Gain Adjust

Tolerance

Transmit Gain Boost

Total Harmonic

Distortion (THD)

CONDITIONS

By step

SFR 96h bit 1 (TXBOOST) = 1

1Khz sine wave at output (TXAP-TXAN)

1.5Vpk(2.7dBm) for Vref=1.25V

2.4Vpk (6.8dBm) for Vref=2.25V

THD = 2nd and 3rd harmonic.

Intermod Distortion

At output (TXAP-TXAN)

1.0kHz, 1.2 kHz sine waves summed

2.0Vpk for Vref=1.25V

2.4Vpk for Vref=2.25V

Refer to CTR21 specification for complete

description of requirements

Power Supply

Rejection Ratio

-30 dBm signal at VPA

300Hz – 30kHz. Measured TXAP to TXAN.

RECEIVER

PARAMETER

Carrier Detect On

Carrier Detect Off

Carrier Detect Hysteresis

Receive Level

Idle Channel Noise

CONDITIONS

Tip and Ring

Tip and Ring

Tip and Ring

Tip and Ring

0.2kHz - 4.0kHz

73M2901/5V

Advanced Single

Chip Modem

MIN NOM MAX UNIT

-0.3

0

0.3

dB

4.8

5.1

5.4

dB

-50

dB

each unwanted

frequency

-33

dB

component

sum of

unwanted

frequency

-20

components in

pass band

30.0

dB

below

low

tone

dB

MIN

-43.0

-48.0

-43.0

NOM

2.0

-70

MAX

-9.0

-65

UNIT

dBm01

dBm01

dB

dBm01

dB

7

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