SI3211 ETC, SI3211 Datasheet - Page 11

• Manufacturer Part Number: SI3211
• Description: PROSLIC PROGRAMMABLE CMOS SLIC/CODEC WITH RINGING/BATTERY VOLTAGE GENERATION
• Manufacturer: ETC

Table 4. Linefeed Characteristics
(V
Parameter
Loop Resistance Range
DC Loop Current Accuracy
DC Open Circuit Voltage
Accuracy
DC Differential Output
Resistance
DC Open Circuit Voltage—
Ground Start
DC Output Resistance—
Ground Start
DC Output Resistance—
Ground Start
Loop Closure/Ring Ground
Detect Threshold Accuracy
Ring Trip Threshold
Accuracy
Ring Trip Response Time
Ring Amplitude
Ring DC Offset
Trapezoidal Ring Crest
Factor Accuracy
Sinusoidal Ring Crest
Factor
Ringing Frequency Accuracy
Ringing Cadence Accuracy
Calibration Time
Power Alarm Threshold
Accuracy
*Note:
DDA
, V
DC resistance round trip; 160
DDD
= 3.13 to 5.25 V, T
A
= 0 to 70°C for K-Grade, –40 to 85°C for B-Grade)
Symbol
V
R
R
R
R
R
R
OCTO
V
ROTO
LOOP
TOTO
DO
TR
OS
CF
corresponds to 2 kft 26 gauge AWG
User Programmable Register 70
At Power Threshold = 300 mW
R
I
I
Accuracy of ON/OFF Times
RING
I
LIM
LOOP
RING
Active Mode; V
Programmable in Indirect
Preliminary Rev. 1.11
and Indirect Register 36
5 REN load; sine wave;
= 29 mA, ETBA = 4 mA
<I
Crest factor = 1.3
<I
I
Test Condition
= 160
THR
R
CAL to CAL Bit
LIM
TIP to ground
V
LIM
I
THR
V
Register 19
See note.*
LOOP
TIP
f = 20 Hz
; V
OC
; RING to ground
= 11.43 mA
RING
= 1100
– V
= 48 V
< I
V
RING
OC
LIM
BAT
wrt ground
= 48 V,
Si3210/Si3211/Si3212
= –75 V
.
–.05
1.35
Min
–10
150
–20
–20
–50
–25
–4
–4
44
–1
—
—
—
—
0
0
Typ
160
160
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max
1.45
160
600
.05
10
20
20
50
25
—
—
—
—
—
—
4
4
1
V
msec
msec
Unit
k
RMS
%
%
%
%
%
V
V
V
11