XRT59L91 Datasheet, PDF (7/28 Pages) Exar Corporation – Single-Chip E1 Line Interface Unit

Preliminary
XRT59L91
RECEIVER ELECTRICAL CHARACTERISTICS
T_A=-40 to 85°C, V_DD=3.3V±5%, unless otherwise specified.
Parameter
Receiver Loss of Signal:
Threshold to Assert
Threshold to Clear
Time Delay
Hysteresis
Receiver Sensitivity
Min
Typ
Max Unit
12
20
-
dB
11
15
dB
10
-
255
bit
-
5
-
dB
11
13
-
dB
Interference Margin
Input Impedance
Jitter Tolerance:
20Hz
700Hz
10KHz —100KHz
Return Loss:
51KHz —102KHz
102KHz—2048KHz
2048KHz—3072KHz
-18
-14
-
5
10
5
-
0.3
14
-
20
-
16
-
-
dB
-
KW
-
UIpp
-
dB
-
dB
-
dB
Test Conditions
Cable attenuation @ 1024KHz
per ITU-G.775
Below nominal pulse amplitude of 3.0V
for 120W and 2.37V for 75W applications.
With -18dB interference signal added.
With 6dB cable loss
per ITU-G.703
TRANSMITTER ELECTRICAL CHARACTERISTICS
T_A=-40 to 85°C, V_DD=3.3V±5%, unless otherwise specified.
Parameter
Min
Typ
Max Unit
AMI Output Pulse Amplitude:
75W Application
120W Application
2.13 2.37 2.60
V
2.70 3.00 3.30
Output Pulse Width
224
244
264
ns
Output Pulse Width Ratio
0.95 1.00 1.05
-
Output Pulse Amplitude Ratio 0.95 1.00 1.05
-
Output Return Loss:
51KHz —102KHz
102KHz—2048KHz
2048KHz—3072KHz
10
-
16
-
12
-
-
dB
-
dB
-
dB
Test Conditions
Use transformer with 1:2 ratio
and 9.1W resistor in series
with each end of primary.
per ITU-G.703
per ITU-G.703
per ETSI 300 166 and CH PTT
ABSOLUTE MAXIMUM RATINGS
Storage Temperature ^{○ ○ ○ ○ ○ ○ ○ ○} -65°C to + 150°C
Operating Temperature ^{○ ○ ○ ○ ○ ○ ○ ○} -40°C to + 85°C
Supply Voltage ^{○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○} -0.5V to + 6.0V
Rev. P2.00
7