AK2546 Просмотр технического описания (PDF) - Asahi Kasei Microdevices

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производитель

AK2546

7 channel T1 Transceiver

Asahi Kasei Microdevices 

ASAHI KASEI

[AK2546]

RECEIVER

Receiver characteristics are guaranteed on the conditions as shown below.

VDD=3.3V±5%, VSS, GND=0V, Ta=-40~85°C,

MCLK frequency: 1.544MHz±100ppm, 24.704MHz±100ppm,

Bipolar input frequency: 1.544MHz±130ppm(reference input level: 3V0p±20%)

Parameter

Symbol Min Typ Max Units

Condition

Sensitivity

-6

dB Note1

Loss of Signal Threshold

0.35 0.5 0.7

V Note2

Allowable Consecutive Zero before LOS

170 175 180 bits

S/X tolerance

12 dB Note3

Generated Jitter

30

nspp Note4

Low pulse density immunity

1/16

Mark

Jitter Tolerance

GR-499 Category I,II

Note1: Relative value to the reference level. Compare at 772kHz with All Mark Pattern.

Note2: Level at the chip side of transformer. Loss of signal is logical AND between an analog loss of

Signal monitors input level and a digital loss of signal check recovered data stream.

Note3: PN20 and AMI 1/8 Mark pattern input. Noise frequency is 770kHz.

Note4: PN20 pattern input.

JITTER TOLERANCE

100

10

1

0.1

0.01

1

GR-499

Category II

GR-499

Category I

10

100

1000

10000 100000

Jiiter Frequency(Hz)

C0019-E-01

10

1999/9

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