Cirrus Logic CS61880 - Manual (Page 54)

CS61880
54 DS450PP3
19.3 Digital Characteristics
(TA = -40
°
C to 85
°
C; TV+, RV+ = 3.3 V
±
5%; GND = 0 V)
19.4 Transmitter Analog Characteristics
(TA = -40
°
C to 85
°
C; TV+, RV+ = 3.3 V
±
5%; GND = 0 V)
Parameter Symbol Min. Typ Max Units
High-Level Input Voltage Note 6 V
IH
2.0 - - V
Low-Level Input Voltage Note 6 V
IL
- - 0.8 V
LOOP[7:0] Low-Level Input Voltage V
IHL
- - 1/3 VCCIO-0.2 V
LOOP[7:0] Mid-Level Input Voltage V
IHM
1/3 VCCIO +0.2 1/2 VCCIO 2/3 VCCIO-0.2 V
LOOP[7:0] High-Level Input Voltage V
IHH
2/3 VCCIO +0.2 - - V
High-Level Output Voltage Notes 6 , 7
I
OUT
= -400
µ
A
V
OH
2.4 - - V
Low-Level Output Voltage Notes 6 , 7
I
OUT
= 1.6 mA
V
OL
- - 0.4 V
Input Leakage Current -10 -
+
10
µ
A
Input leakage for LOOP pins -150 +150
µ
A
Parameter Min. Typ Max Units
Output Pulse Amplitudes E1 75
Ω
Notes 8 , 9 , 11 E1 120
Ω
2.14
2.7
2.37
3.0
2.6
3.3 V
V
Ratio of Positive to Negative pulses
Notes
8 , 9 , 11 Amplitude at center of pulse interval
Width at 50% of nominal amplitude
0.95
0.95 -
- 1.05
1.05
Pulse Amplitude of a space E1 120
Ω
E1 75
Ω
-0.3
-0.237
-
- 0.3
0.237
V
V
Transmit Return Loss 51 kHz to 102 kHz
102 kH to 2048 kHz
Notes 10 , 11 , 12 2048 kHz to 3072 kHz
-14
-14
-14 -20
-19
-18 -
-
- dB
Jitter Added by the Transmitter 10 Hz - 8 kHz
8 kHz - 40 kHz
Notes 10 , 13 10 Hz - 40 kHz
Broad Band
-
-
-
- 0.010
0.009
0.007
0.015 0.020
0.025
0.025
0.050 UI
Transmitter Short Circuit Current per channel - - 50 mA RMS