AK2048D Datasheet, PDF (9/16 Pages) Asahi Kasei Microsystems – 2M CMI Transceiver

ASAHI KASEI
[AK2048]
RECEIVER
Parameter
Symbol min
typ
max Unit
Comments
REF25 output
VREF
2.0
2.5
3.0
V
Iout<IuA *1)
Signal loss threshold level
Vth
85
135
185 mVp-p RXB terminal
Signal loss detection time
TALM
10
12
usec
Fig.5
Sensitivity
0.2
4.0
Vp-p
Input jitter tolerance
0.15 UIp-p Jitter frequency
20KHz~100KHz
PSRR (Line Length 400m)
400 mVp-p
*2)
S/X tolerance
Line Length 400m
2
0m
12
*2)
dB frequency 1.9MHz
dB
Signal input to Data output Trd
1.25
bit
delay time
RCLK Output Jitter
3
nsp-p
*1) Reference output of fixed equalizer.
*2) The amplitude of input data is 3.0±0.75Vp-p and the data pattern is 2¹⁵-1.
*3) Data output delay = (1.25bit logical delay) + (internal propagation delay)
*4) Data pattern is “all space” with CRV every 8kHz cycle.
Fig.6
*3)
*4)
RxA
RxB
135mVp-p
REF25
LOS
TALM
50%
Fig.5 LOS output signal
RXA
RXB
RCLK
RCRV
RDATA
A
B
C
D
E
Trd
A
B
C
D
The shaded portion is
CRV bit
Fig.6 Delay time from RXA,RXB to RDATA
MS0073-E-00
9
2001/01