Specifications
Si2457/Si2434/Si2415
4 Rev. 0.91
Electrical Specifications
Table 1. Recommended Operating Conditions
Parameter
1
Symbol Test Condition
Min
2
Typ
Max
2
Unit
Ambient Temperature T
A
F-Grade 0 25 70 °C
Si2457/34/15 Supply Voltage, Digital
3
V
D
3.0 3.3 3.6 V
Notes:
1. The Si2457/34/15 specifications are guaranteed when the typical application circuit (including component tolerance)
and any Si2457/34/15 and any Si3018 are used. See "Typical Application Schematic" on page 10.
2. All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.
Typical values apply at nominal supply voltages and an operating temperature of 25 °C unless otherwise stated.
3. The digital supply, V
D
, operates from 3.0 to 3.6 V. The Si2457/34/15 interface supports 5 V logic (CLKIN/XTALI
supports 3.3 V logic only).
Table 2. Loop Characteristics
(V
D
= 3.0 to 3.6 V, T
A
= 0 to 70 °C for K-Grade)
Parameter Symbol Test Condition Min Typ Max Unit
DC Termination Voltage V
TR
I
L
= 20 mA, ILIM
1
=0
DCV = 00, MINI = 11, DCR = 0
——6.0V
DC Termination Voltage V
TR
I
L
= 120 mA, ILIM = 0
DCV = 00, MINI = 11, DCR = 0
9——V
DC Termination Voltage V
TR
I
L
= 20 mA, ILIM = 0
DCV = 11, MINI = 00, DCR = 0
——7.5V
DC Termination Voltage V
TR
I
L
= 120 mA, ILIM = 0
DCV = 11, MINI = 00, DCR = 0
9——V
DC Termination Voltage V
TR
I
L
= 20 mA, ILIM = 1
DCV = 11, MINI = 00, DCR = 0
——7.5V
DC Termination Voltage V
TR
I
L
= 60 mA, ILIM = 1
DCV = 11, MINI = 00, DCR = 0
40 — — V
DC Termination Voltage V
TR
I
L
= 50 mA, ILIM = 1
DCV = 11, MINI = 00, DCR = 0
——40 V
On-Hook Leakage Current I
LK
V
TR
=–48V — — 5 µA
Operating Loop Current I
LP
MINI = 00, ILIM = 0 10 — 120 mA
Operating Loop Current I
LP
MINI = 00, ILIM = 1 10 — 60 mA
DC Ring Current DC current flowing through ring
detection circuitry
—1.5 3 µA
Ring Detect Voltage
2
V
RD
RT = 0 12 15 18 V
RMS
Ring Detect Voltage
2
V
RD
RT = 1 18 21 25 V
RMS
Ring Frequency F
R
15 — 68 Hz
Ringer Equivalence Number REN — — 0.2
Notes:
1. ILIM = U67, bit 9; DCV = U67, bits 3:2; MINI = U67, bits 13:12; DCR = U67, bit 7; RT = U67, bit 0.
2. The ring signal is guaranteed to not be detected below the minimum. The ring signal is guaranteed to be detected
above the maximum.