XRT91L31IQTR-F Exar Corporation, XRT91L31IQTR-F Datasheet - Page 35

• Manufacturer Part Number: XRT91L31IQTR-F
• Description: SONET SDH - 8 Bit OC12/STM4, OC3/STM1 PHY Transceiver (with Improved Jitter Transfer Used For Loop Timing Applications)
• Manufacturer: Exar Corporation
• Type: Transceiverr

Specifications of XRT91L31IQTR-F

• Input: LVCMOS, LVPECL, LVTTL
• Output: LVCMOS, LVPECL, LVTTL
• Frequency - Max: 77.76MHz
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-FQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REV. 1.0.2
F
F
N
Jitter Transfer function is defined as the ratio of jitter on the output relative to the jitter applied on the input
versus frequency. There are two distinct characteristics in jitter transfer, jitter gain (jitter peaking) defined as
the highest ratio above 0dB and jitter transfer bandwidth. The overall jitter transfer bandwidth is controlled by a
low bandwidth loop.
4.6.2
IGURE
IGURE
OTE
: LBW and HBW stand for Low Receiver Bandwidth and High Receiver Bandwidth (Pin 15 = high), respectively. taken
with nominal voltage and temperature conditions
24. J
25. J
Jitter Transfer
ITTER
ITTER
T
T
100.00
OLERANCE
OLERANCE
10.00
1.00
0.10
1000.00
1E+00
100.00
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
10.00
1.00
0.10
1E+00
F
F
OR
OR
1E+01
XRT91L31 Jitter Tolerance (OC12)
OC-12
OC-3
HB W
1E+01
XRT91L31 Jitter Tolerance (OC3)
HB W
WITH
1E+02
WITH
1E+02
H
H
IGH
IGH
Frequency (Hz)
Frequency (Hz)
1E+03
B
1E+03
35
B
ANDWIDTH AND
ANDWIDTH AND
GR-253 M ask
LB W
1E+04
1E+04
L
1E+05
L
OW
1E+05
OW
B
GR-253 M ask
B
ANDWIDTH
ANDWIDTH
1E+06
1E+06
LB W
S
1E+07
S
ETTINGS
ETTINGS
1E+07
XRT91L31