ISL5586 Intersil Corporation, ISL5586 Datasheet - Page 6

• Manufacturer Part Number: ISL5586
• Description: Low Power Ringing SLIC
• Manufacturer: Intersil Corporation

Electrical Specifications
NOTES:
Design Equations
Refer to Figure 14 for programming resistor connections.
Loop Supervision Thresholds
SWITCH HOOK DETECT
The desired switch hook detect threshold current (I
a single external resistor, R
The loop current threshold programming range is from 5mA
to 15mA.
RING TRIP DETECT
The ring trip detect threshold (I
resistor, R
I
peak off hook current while still ringing. In addition, the ring
trip current must be set below the transient current limit
including tolerances. The ringing signal filter capacitor C
in parallel with R
LOOP CURRENT LIMIT
The DC loop current limit (I
external resistor R
The loop current limit programming range is from 15mA to
45mA.
Impedance Matching
The AC source impedance of the SLIC is programmed with
the external impedance network Z
synthesize and match Resistive line terminations the
programming network is simply a resistor (R
Figure 14. For complex line terminations such as the one
R
R
R
V
RT
2. These parameters are controlled via design and Statistical Process Control and are not directly tested. These parameters are characterized upon
3. Input voltage = 0.636V
4. Tested per IEEE455-1985, with 368Ω resistors connected to the Tip and Ring terminals.
5. These parameters are tested 100% at room temperature, and are guaranteed but not tested across the full temperature range via statistical
6. The power dissipation is based on actual device measurements and will be less than worst case calculations based on data sheet supply current limits.
7. Characterized with 2 x 10us and 10 x 1000us first level lightning surge waveform (GR-1089-CORE).
IL
SH
R T
BH
initial design release and upon design changes which would affect these characteristics.
characterization and design.
should be set between the peak ringing current and the
=
to 4-Wire, BSEL = 2.0V
=
=
1760
------------ -
I
LI M
615 I
1800 I
RT
⁄
⁄
SH
as follows.
R T
RT
IL
PARAMETER
sets the ring trip response time.
as follows.
RMS
SH
LIM
4-6
for V
as follows
) is programmed by the
RT
Unless Otherwise Specified, T
AGND = BGND = 0V, loop current limit = 25mA. All AC Parameters are specified at 600Ω,
2-wire terminating impedance over the frequency band of 300Hz to 3.4kHz. Protection
resistors = 0Ω. These parameters apply generically to each product offering. (Continued)
BH
) is set by a single external
S
= -100V, 0.530V
as described next. To
S
) as shown in
SH
RMS
) is set by
f = 50Hz
f = 300Hz ≤ f ≤ 3400Hz
f = 8kHz ≤ f ≤ 16kHz
(EQ. 1)
(EQ. 2)
(EQ. 3)
for V
RT
A
,
BH
= -40
= -85V and 0.460V
o
C to 85
TEST CONDITIONS
illustrated in Figure 1, a complex programming network is
required.
RESISTIVE IMPEDANCE SYNTHESIS
The AC source resistance of the SLIC is synthesized with a
single external resistor R
The synthesized resistance (Z
characteristic line resistance and protection resistors as
shown in Equation 5.
COMPLEX IMPEDANCE SYNTHESIS
A complex network is used in place of R
impedance of the line is complex as shown in Figure 1.
The component R
R
equations for each component are provided below where
RP1 and RP2 are the protection resistors and R
component of the programming network.
R
Z
R
R
C
S
S
O
S
P
P
o
used for resistive impedance synthesis. The design
C, V
=
=
=
=
=
Z
FIGURE 1. COMPLEX PROGRAMMING NETWORK
R
133.3
133.3
C
0
BL
L
2
×
–
⁄
RMS
2-WIRE TERMINATION
133.3


= -24V, V
R
(
400
--------- -
RP
1
×
×
IMPEDANCE (Z
3
(
R
R1 RP
for -75V devices.


1
2
+
=
–
RP
C
S
R
BH
133.3 Z
2
2
has a different design equation than the
2
= -100V, V
)
1
–
(
S
L
RP
)
0
as follows:
)
2
)
0
MIN
CC
) is determined by the
-
-
-
= +5V,
R
S
S
TYP
PROGRAMMING
76
55
42
NETWORK (Z
when the termination
C
R
MAX
P
P
-
-
-
P
is a
S
)
UNITS
(EQ. 4)
(EQ. 5)
(EQ. 6)
(EQ. 7)
(EQ. 8)
dB
dB
dB