3 digital characteristics, 4 transmitter analog characteristics – Cirrus Logic CS61880 User 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