MSM6946RS Просмотр технического описания (PDF) - Oki Electric Industry

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MSM6946RS

300 bps Single Chip FSK MODEM

Oki Electric Industry 

¡ Semiconductor

MSM6926/6946

Demodulated Bit Characteristics

Parameter

Peak Intersymbol Distortion

Bit Error Rate

(VA = 12 V ±10%, VD = 5 V ±5%, Ta = 0 to 70°C)

Symbol

Condition

Min. Typ. Max. Unit

Back-to-back over input

ID signal range –6 to –40 dBm. —

6

511-bit test pattern.

—

%

Back-to-back with 0.3 to

3.4 kHz flat noise.

Receive signal level –25 dBm.

BER

511-bit test pattern

—

10–5

—

5 dB

S/N —

Timing Characteristics

1. MSM6926

Parameter

RS/CS Delay Time

CD/ON Delay Time

CD/OFF Delay Time

Soft Turn-OFF Time

Symbol

TRC ON

TRC OFF

TCD ON

TCD OF

TST

Condition

RS1 = "0"

Æ CS = "0"

RS1 = "1"

Æ CS = "1"

—

—

—

(VA = 12 V ±10%, VD = 5 V ±5%, Ta = 0 to 70°C)

TS2 TS1 Min. Typ. Max. Unit

0 0 395 400

405

0 1 25

30

35

1 0 345 350

355

11

External delay timer

**

0

—

0.5

0 0 300

—

01

5

—

320

ms

20

1 0 150

—

170

11

External delay timer

0 0 20

—

70

0 1 20

—

70

1 0 10

—

40

11

External delay timer

** —

10

—

Refer to Fig. 7

Notes: *: Irrespective of I/O condition

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