73K321L Ver la hoja de datos (PDF) - TDK Corporation

Número de pieza

componentes Descripción

Fabricante

73K321L

CCITT V.23, V.21 Single-Chip Modem

TDK Corporation 

73K321L

CCITT V.23, V.21

Single-Chip Modem

DYNAMIC CHARACTERISTICS AND TIMING

(TA = -40°C to +85°C, VDD = Recommended range unless otherwise noted.)

PARAMETER

CONDITION

MIN NOM MAX

FSK Modulator

Output Freq. Error

CLK = 11.0592 MHz

-0.35

+0.35

Transmit Level

Transmit Dotting Pattern

-11.5 -10

-9

Harmonic Distortion

in 700-2900 Hz band

THD in the alternate band FSK

-60

-50

Output Bias Distortion

Transmit Dotting Pattern in ALB @ RXD

±3

Total Output Jitter

Random Input in ALB @ RXD

-10

+10

NOTE: Parameters expressed in dBm0 refer to the following definition:

0 dB loss in the Transmit path from TXA to the telephone line.

2 dB gain in the Receive path from the telephone line to RXA.

Refer to the Basic Box Modem diagram in the Applications section for the DAA design.

DTMF Generator

Frequency Accuracy

-0.25

+0.25

Output Amplitude

Low Band, CR0 bit D2=1

-10

-9

-8

Output Amplitude

High Band, CR0 bit D2=1

-8

-7

-6

Twist

High-Band to Low-Band, as above 1.0

2.0

3.0

Long Loop Detect

Not valid for V.23 back channel

-38

-28

Dynamic Range

Refer to Performance Curves

43

Call Progress Detector

Detect Level

-3 dB points in 285 and 675 Hz

-38

Reject Level

Test signal is a 460 Hz sinusoid

-45

Delay Time

-70 dBm0 to -30 dBm0 STEP

40

Hold Time

-30 dBm0 to -70 dBm0 STEP

40

Hysteresis

2

Carrier Detect

Threshold

Single Tone

-48

-43

Delay Time

V.21

10

20

V.23 Forward Channel

6

12

V.23 Back Channel

25

40

Hold Time

V.21

6

20

V.23 Forward Channel

3

8

V.23 Back Channel

10

25

Hysteresis

2

UNIT

%

dBm0

dB

%

%

%

dBm0

dBm0

dB

dBm0

dB

dBm0

dBm0

ms

ms

dB

dBm0

ms

ms

ms

ms

ms

ms

dB

15

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