
T1 CSU/ISDN PRI Transceiver
—
LXT310
Datasheet
21
Table 10. Analog Characteristics
(Under Recommended Operating Conditions)
Parameter
Min
Typ
1
Max
Units
Test Conditions
Recommended output load at TTIP and TRING
50
–
200
AMI Output Pulse Amplitudes
2.4
3.0
3.6
V
Jitter added by the transmitter
2
10 Hz - 8 kHz
–
–
0.02
UI
measured at the output
with LBO1 = 0, and
LBO2 = 0
8 kHz - 40 kHz
–
–
0.02
UI
10 Hz - 40 kHz
–
–
0.02
UI
Broad Band
–
–
0.04
UI
Receive signal attenuation
range @ 772 kHz
Mode 1 (EGL = 1)
0
26
–
dB
Mode 2 (EGL = 0)
0
36
–
dB
Allowable consecutive zeros before LOS
160
175
190
–
Input jitter tolerance
10 kHz - 100 kHz
0.4
–
–
UI
1 Hz
138
–
–
UI
Jitter attenuation curve corner frequency
3
–
3
–
Hz
1. Typical values are measured at 25
°
C and are for design aid only; not guaranteed and not subject to production testing.
2. Input signal to TCLK is jitter-free.
3. Guaranteed by characterization; not subject to production testing.
4. Circuit attenuates jitter at 20 dB/decade above the corner frequency.
Figure 9. 1.544 Mbps DS1 Pulse Mask (T1.403 - 1995)
Table 11. Pulse Mask Corner Point Specifications
Maximum Curve
Minimum Curve
Time (ns)
% V
Time (ns)
% V
0
5
0
-5
250
5
350
-5
325
80
350
50
325
120
400
90
1.5
1.0
0.5
0.0
-0.5
-1
Normalized
Amplitude
Time
(In Unit Intervals)
-0.5
0.5
1.0
1.5