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CS61584A-IQ3 Datasheet(PDF) 6 Page - Cirrus Logic

Part No. CS61584A-IQ3
Description  DUAL T1/E1 LINE INTERFACE
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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CS61584A
6
DS261PP5
DS261PP5
ANALOG CHARACTERISTICS (T
A = -40 to 85 °C; power supply pins within ±5% of nominal.)
Notes: 7. For input amplitude of 1.2 Vpk to 4.14 Vpk.
8. For input amplitude of 0.5 Vpk to 1.2 Vpk, and 4.14 Vpk to 5.0 Vpk.
9. For input amplitude of 1.07 Vpk to 4.14 Vpk.
10. For input amplitude of 4.14 Vpk to 5.0 Vpk.
11. Jitter tolerance increases at lower frequencies. Refer to the Receiver section.
12. Not production tested. Parameters guaranteed by design and characterization.
13. Typical performance using the line interface circuitry recommended in the Applications section.
14. Return loss = 20 log10 ABS((z1 + z0) / (z1 - z0)) where z1 = impedance of the transmitter or receiver, and
z0 = cable impedance.
15. Attenuation measured with sinusoidal input jitter equal to 3/4 of measured jitter tolerance. Circuit
attenuates jitter at 20 dB/decade above the corner frequency. Output jitter can increase significantly
when more than 28 UI's are input to the attenuator. The jitter attenuator -3 dB knee in T1 mode is
selectable for 4.0 Hz or 1.25 Hz. Refer to the Jitter Attenuator section.
Parameter
Symbol
Min
Typ
Max
Unit
Receiver
RTIP/RRING Differential Input Impedance
-
20
-
k
Sensitivity Below DSX-1 (0 dB = 2.4 V)
-
-13.6
-
dB
Loss of Signal Threshold
-
0.3
-
V
Data Decision Threshold
T1, DSX-1
(Note 7)
(Note 8)
T1, FCC Part 68 and E1
(Note
9)
(Note 10)
60
55
45
40
65
-
50
-
70
75
55
60
% of
Peak
Allowable Consecutive Zeros before LOS
160
175
190
bits
Receiver Input Jitter Tolerance (DSX-1, E1)
10 Hz and below
(Note 11)
2kHz
10 kHz - 100 kHz
300
6.0
0.4
-
-
-
-
-
-
UI
Receiver Return Loss
(Notes 12, 13, and 14)
51 kHz - 102 kHz
102 kHz - 2.048 MHz
2.048 MHz - 3.072 MHz
12
18
14
22
24
22
-
-
-
dB
Jitter Attenuator
Jitter Attenuator Corner Frequency
T1
(Notes 12 and 15)
E1
1.25
-
4.0
1.25
-
-
Hz
Attenuation at 10 kHz Jitter Frequency
(Notes 12 and 15)
-
60
-
dB
Attenuator Input Jitter Tolerance
(Note 12)
(Before Onset of FIFO Overflow or Underflow Protection)
28
43
-
UIpk-pk
Transmitter
Arbitrary Pulse Amplitude at Transformer Secondary
T1, DSX-1
T1, DS1
E1, 75
E1, 120
-
-
-
-
73
52
43
52
-
-
-
-
mV/LS
B
CS61584A
6
DS261F1




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