73K302L 데이터 시트보기 (PDF) - TDK Corporation

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73K302L

V.22, V.21, Bell 212A, Bell 103 Single-Chip Modem with Integrated Hybrid

TDK Corporation 

73K222BL

V.22, V.21, Bell 212A, Bell 103

Single-Chip Modem with Integrated Hybrid

DYNAMIC CHARACTERISTICS AND TIMING (continued)

PARAMETER

CARRIER DETECT

Threshold

Delay Time

Hysteresis

Hold Time

ANSWER TONE DETECTOR

Detect Level

Delay Time

Hold Time

Detect Frequency Range

OUTPUT SMOOTHING FILTER

Output

Spurious Frequency Components

Clock Noise

CARRIER VCO

Capture Range

Capture Time

RECOVERED CLOCK

Capture Range

Data Delay Time

CONDITION

DPSK or FSK

Receive data

-70 dBm0 to -30 dBm0 STEP

Single tone detected

-30 dBm0 to -70 dBm0 STEP

Not in V.21 mode

-70 dBm0 to -30 dBm0 STEP

-30 dBm0 to -70 dBm0 STEP

TXA1 to TXA2, loaded as shown

in Figure 1 (2% THD)

Frequency = 76.8 kHz

Frequency = 153.6 kHz

TXA pin; 76.8 kHz

Originate or Answer

-10 Hz to +10 Hz Carrier

Frequency Change Assumption

% of frequency

center frequency

(center at 1200 Hz)

Analog data in at RXA pin to

receive data valid at RXD pin

MIN

-48

15

2

10

-48

20

10

-2.5

±2.5

-10

-625

NOM

3.0

40

30

MAX UNIT

-43

dBm0

45

ms

dB

24

ms

-42

dBm0

45

ms

30

ms

+2.5

%

V

-39

dBm0

-45

dBm0

1.0 mVrms

+10

Hz

100

ms

+625

ppm

50

ms

18

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