SI3215 SILABS [Silicon Laboratories], SI3215 Datasheet - Page 11

• Manufacturer Part Number: SI3215
• Manufacturer: SILABS [Silicon Laboratories]

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 Ω corresponds to 2 kft 26 gauge AWG
DDD
= 3.13 to 5.25 V, T
A
= 0 to 70°C for K-Grade, –40 to 85 °C for B-Grade)
Symbol
R
V
R
R
R
R
V
R
OCTO
ROTO
LOOP
TOTO
DO
OS
TR
CF
User Programmable Register 70
At Power Threshold = 300 mW
R
I
I
Accuracy of ON/OFF Times
RING
I
LOOP
LIM
RING
Active Mode; V
Programmable in Indirect
and Indirect Register 23
5 REN load; sine wave;
= 29 mA, ETBA = 4 mA
<I
↑CAL to ↓CAL Bit
Crest factor = 1.3
<I
I
I
Test Condition
THR
THR
= 160 Ω, V
LIM
TIP to ground
V
LIM
Rev. 0.92
I
V
LOOP
Register 6
TIP
See note.
f = 20 Hz
; V
OC
; RING to ground
= 11.43 mA
= 40.64 mA
– V
RING
= 48 V
< I
RING
OC
LIM
BAT
wrt ground
= 48 V,
= –75 V
.
–.05
1.35
Min
–10
150
–20
–10
–50
–25
–4
–4
44
–1
—
—
—
—
0
0
Typ
160
160
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max
1.45
160
600
.05
10
20
10
50
25
—
—
—
—
—
—
Si3215
1
4
4
Unit
V
kΩ
ms
ms
%
%
%
%
%
Ω
V
Ω
V
Ω
rms
V
11