4-1
TM
File Number
4831.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil and Design is a trademark of Intersil Corporation.
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Copyright
Intersil Corporation 2000
RSLIC18TM is a trademark of Intersil Corporation.
HC55185
VoIP Ringing SLIC Family
The RSLIC-VoIP family of
ringing subscriber line
interface circuits (RSLIC)
supports analog Plain Old
Telephone Service (POTS) in
short and medium loop length, wireless and wireline
applications. Ideally suited for remote subscriber units, this
family of products offers flexibility to designers with high
ringing voltage and low power consumption system
requirements.
The RSLIC-VoIP family operates to 100V which translates
directly to the amount of ringing voltage supplied to the end
subscriber. With the high operating voltage, subscriber loop
lengths can be extended to 500
(i.e., 5,000 feet) and
beyond.
Other key features across the product family include: low
power consumption, ringing using sinusoidal or trapezoidal
waveforms, robust auto-detection mechanisms for when
subscribers go on or off hook, and minimal external discrete
application components. Integrated test access features are
also offered on selected products to support loopback
testing as well as line measurement tests.
There are five product offerings of the HC55185 with each
version providing voltage grades of high battery voltage and
longitudinal balance. The voltage feed amplifier design uses
low fixed loop gains to achieve high analog performance with
low susceptibility to system induced noise.
Features
Onboard Ringing Generation
Compatible with Existing HC5518x Devices
Low Standby Power Consumption (75V, 65mW)
Reduced Idle Channel Noise
Programmable Transient Current Limit
Improved Off Hook Software Interface
Integrated MTU DC Characteristics
Low External Component Count
Silent Polarity Reversal
Pulse Metering and On Hook Transmission
Tip Open Ground Start Operation
Thermal Shutdown with Alarm Indicator
28 Lead Surface Mount Packaging
Dielectric Isolated (DI) High Voltage Design
Applications
Voice Over Internet Protocol (VoIP)
Cable Modems
Voice Over DSL (VoDSL)
Short Loop Access Platforms
Remote Subscriber Units
Terminal Adapters
Related Literature
AN9814, User's Guide for Development Board
AN9824, Modeling of the AC Loop
Interfacing to DSP CODECs (Contact Factory)
Block Diagram
VRS
VRX
VTX
-IN
VFB
F2
F1
F0
ILIM
SW-
RTD
DET ALM
2-WIRE
PORT
POL
CDC
VBH
VBL
BSEL
SWC
TRANSIENT
CURRENT
LIMIT
SW+
TIP
RING
TL
RD E0
BATTERY
SWITCH
RINGING
PORT
4-WIRE
PORT
TEST
ACCESS
TRANSMIT
SENSING
CONTROL
LOGIC
DETECTOR
LOGIC
DC
CONTROL
Data Sheet
April 2000
4-2
Device Pinout
HC55185
(PLCC)
TOP VIEW
Ordering Information (PLCC Package Only)
PART NUMBER
HIGH BATTERY (VBH)
LONGITUDINAL
BALANCE
FULL
TEST
TEMP.
RANGE
o
C
PACKAGE
PACKAGE
NO.
100V
85V
75V
58dB
53dB
HC55185AIM
-40 to 85
28 Ld PLCC
N28.45
HC55185BIM
-40 to 85
28 Ld PLCC
N28.45
HC55185CIM
-40 to 85
28 Ld PLCC
N28.45
HC55185DIM
-40 to 85
28 Ld PLCC
N28.45
HC55185ECM
0 to 75
28 Ld PLCC
N28.45
HC55185FCM
0 to 85
28 Ld PLCC
N28.45
HC5518XEVAL1
Evaluation board platform, including CODEC.
Also available in Tape and Reel
Device Operating Modes
MODE
F2
F1
F0
E0 = 1
E0 = 0
HC55185A
HC55185B
HC55185C
HC55185D
HC55185E
HC55185F
Low Power Standby
0
0
0
SHD
GKD
Forward Active
0
0
1
SHD
GKD
Unused
0
1
0
n/a
n/a
Reverse Active
0
1
1
SHD
GKD
Ringing
1
0
0
RTD
RTD
Forward Loop Back
1
0
1
SHD
GKD
Tip Open
1
1
0
SHD
GKD
Power Denial
1
1
1
n/a
n/a
RING
ILIM
RTD
CDC
VRX
VRS
POL
TL
BSEL
RD
-IN
VFB
VCC
VTX
BGND
TIP
SW-
E0
DET
ALM
A
GND
SW+
VBL
VBH
SWC
F2
F1
F0
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
3
4
19
20
21
22
23
24
25
26
27
28
HC55185
4-3
Absolute Maximum Ratings
T
A
= 25
o
C
Thermal Information
Maximum Supply Voltages
V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +7V
V
CC
- V
BH
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110V
Uncommitted Switch Voltage . . . . . . . . . . . . . . . . . . . . . . . -110V
ESD (Human Body Model). . . . . . . . . . . . . . . . . . . . . . . . . . . . 500V
Operating Conditions
Temperature Range
Commercial (C suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to 85
o
C
Industrial (I suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to 85
o
C
Positive Power Supply (V
CC
) . . . . . . . . . . . . . . . . . . . . . . . +5V,
5%
Low Battery Power Supply (V
BL
) . . . . . . . . . . . . . -16V to -52V,
5%
High Battery Power Supply (V
BH
)
AIM, CIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V
BL
to 100V,
5%
BIM, DIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
BL
to -85V,
10%
EIM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
BL
to -75V,
10%
Uncommitted Switch (loop back or relay driver). . . . . . +5V to -100V
Thermal Resistance (Typical, Note 1)
JA
PLCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
o
C/W
Maximum Junction Temperature Plastic . . . . . . . . . . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
o
C
(PLCC - Lead Tips Only)
Die Characteristics
Substrate Potential. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
BH
Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bipolar-DI
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
Unless Otherwise Specified, T
A
= -40
o
C to 85
o
C for industrial (I) grade and T
A
= 0
o
C to 85
o
C for commercial
(C) grade, V
BL
= -24V, V
BH
= -100V, -85V or -75V, V
CC
= +5V, AGND = BGND = 0V, loop current limit = 25mA.
All AC parameters are specified at 600
2-wire terminating impedance over the frequency band of 300Hz to
3.4kHz. Protection resistors = 0
.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
RINGING PARAMETERS
VRS Input Impedance (Note 2)
450
-
-
k
Differential Ringing Gain (Note 3)
VRS to 2-wire, R
LOAD
=
78
80
82
V/V
Ringing Voltage Total Distortion
R
L
= 1.3 k
, V
T-R
= |V
BH
| -5
-
-
3.0
%
4-Wire to 2-Wire Ringing Off Isolation
Active mode, referenced to VRS input
-
90
-
dB
2-Wire to 4-Wire Transmit Isolation
Ringing mode referenced to the differential ringing
amplitude
-
80
-
dB
Centering Voltage Accuracy
Tip, Referenced to V
BH
/2 + 0.5
-
2.5
-
V
Ring, Referenced to V
BH
/2 + 0.5
-
2.5
-
V
AC TRANSMISSION PARAMETERS
Receive Input Impedance (Note 2)
160
-
-
k
Transmit Output Impedance (Note 2)
-
-
1
4-Wire Port Overload Level
THD = 1%
3.1
3.5
-
V
PK
2-Wire Port Overload Level
THD = 1%
3.1
3.5
-
V
PK
2-Wire Return Loss
300Hz
-
24
-
dB
1kHz
-
40
-
dB
3.4kHz
-
21
-
dB
2-Wire Longitudinal Balance (Notes 4, 5)
Forward Active, Grade A and B
58
62
-
dB
Forward Active, Grade C, D and E
53
59
-
dB
4-Wire Longitudinal Balance
Forward Active, Grade A and B
58
67
-
dB
Forward Active, Grade C, D and E
53
64
-
dB
HC55185
4-4
2-Wire to 4-Wire Level Linearity
4-Wire to 2-Wire Level Linearity
Referenced to -10dBm
+3 to -40dBm, 1kHz
-
0.025
-
dB
-40 to -50dBm, 1kHz
-
0.050
-
dB
-50 to -55dBm, 1kHz
-
0.100
-
dB
Longitudinal Current Capability (Per Wire) (Note 2)
Test for False Detect
20
-
-
mA
RMS
Test for False Detect, Low Power Standby
10
-
-
mA
RMS
4-Wire to 2-Wire Insertion Loss
-0.20
0.00
+0.20
dB
2-Wire to 4-Wire Insertion Loss
-6.22
-6.02
-5.82
dB
4-Wire to 4-Wire Insertion Loss
-6.22
-6.02
-5.82
dB
Forward Active Idle Channel Noise (Note 5)
2-Wire C-Message, T = 25
o
C
-
10
13
dBrnC
4-Wire C-Message, T = 25
o
C
-
4
7
dBrnC
Reverse Active Idle Channel Noise (Note 5)
2-Wire C-Message, T = 25
o
C
-
11
14
dBrnC
4-Wire C-Message, T = 25
o
C
-
5
8
dBrnC
DC PARAMETERS
Off Hook Loop Current Limit
Programming Accuracy
-8.5
-
+8.5
%
Programming Range
15
-
45
mA
Off Hook Transient Current Limit
Programming Accuracy
-10
-
+10
%
Programming Range
40
-
100
mA
Loop Current During Low Power Standby
Forward Polarity Only
18
-
26
mA
Open Circuit Voltage
(|Tip - Ring|)
V
BL
= -16V
-
8.0
-
V
DC
V
BL
= -24V
14
15.5
17
V
DC
V
BH
> -60V
43
49
-
V
DC
Low Power Standby
Open Circuit Voltage
(Tip - Ring)
V
BL
= -48V
-
44.5
-
V
DC
V
BH
> -60V
43
51.5
-
V
DC
Absolute Open Circuit Voltage
V
RG
in LPS and FA
V
TG
in RA
V
BH
> -60V
-
-53
-56
V
DC
TEST ACCESS FUNCTIONS
Switch On Voltage
I
OL
= 45mA
-
0.30
0.60
V
Loopback Max Battery
-
-
52
V
LOOP DETECTORS AND SUPERVISORY FUNCTIONS
Switch Hook Programming Range
5
-
15
mA
Switch Hook Programming Accuracy
Assumes 1% External Programming Resistor
-10
-
+10
%
Dial Pulse Distortion
-
-
1
%
Ring Trip Comparator Threshold
2.3
2.45
2.9
V
Ring Trip Programming Current Accuracy
-10
-
+10
%
Ground Key Threshold
-
12
-
mA
Thermal Alarm Output
IC Junction Temperature
-
175
-
o
C
Electrical Specifications
Unless Otherwise Specified, T
A
= -40
o
C to 85
o
C for industrial (I) grade and T
A
= 0
o
C to 85
o
C for commercial
(C) grade, V
BL
= -24V, V
BH
= -100V, -85V or -75V, V
CC
= +5V, AGND = BGND = 0V, loop current limit = 25mA.
All AC parameters are specified at 600
2-wire terminating impedance over the frequency band of 300Hz to
3.4kHz. Protection resistors = 0
.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
HC55185
4-5
LOGIC INPUTS (F0, F1, F2, E0, SWC)
Input Low Voltage
-
-
0.8
V
Input High Voltage
2.0
-
-
V
Input Low Current
V
IL
= 0.4V
-20
-
-
A
Input High Current
V
IH
= 2.4V
-
-
1
A
LOGIC OUTPUTS (DET, ALM)
Output Low Voltage
I
OL
= 5mA
-
.15
0.4
V
Output High Voltage
I
OH
= 100
A
2.4
3.5
-
V
SUPPLY CURRENTS
Low Power Standby, BSEL = 1
I
CC
-
3.9
6.0
mA
I
BH
-
0.66
0.90
mA
Forward or Reverse, BSEL = 0
I
CC
-
4.9
6.5
mA
I
BL
-
1.2
2.5
mA
Forward, BSEL = 1
I
CC
-
7.0
9.5
mA
I
BL
-
0.9
2.0
mA
I
BH
-
2.2
3.0
mA
Ringing, BSEL = 1
I
CC
-
6.4
9.0
mA
I
BL
-
0.3
1.0
mA
I
BH
-
2.0
3.0
mA
Forward Loopback, BSEL = 0
I
CC
-
10.3
13.5
mA
I
BL
-
23.5
32
mA
Tip Open, BSEL = 0
I
CC
-
3.8
5.5
mA
I
BL
-
.3
1.0
mA
Power Denial, BSEL = 0 or 1
I
CC
-
4.0
6.0
mA
I
BL
-
0.22
0.5
mA
ON HOOK POWER DISSIPATION (Note 6)
Forward or Reverse
V
BL
= -24V
-
55
-
mW
Low Power Standby
V
BH
= -100V
-
85
-
mW
V
BH
= -85V
-
75
-
mW
V
BH
= -75V
-
65
-
mW
Ringing
V
BH
= -100V
-
250
-
mW
V
BH
= -85V
-
230
-
mW
V
BH
= -75V
-
225
-
mW
OFF HOOK POWER DISSIPATION (Note 6)
Forward or Reverse
V
BL
= -24V
-
305
-
mW
POWER SUPPLY REJECTION RATIO
Electrical Specifications
Unless Otherwise Specified, T
A
= -40
o
C to 85
o
C for industrial (I) grade and T
A
= 0
o
C to 85
o
C for commercial
(C) grade, V
BL
= -24V, V
BH
= -100V, -85V or -75V, V
CC
= +5V, AGND = BGND = 0V, loop current limit = 25mA.
All AC parameters are specified at 600
2-wire terminating impedance over the frequency band of 300Hz to
3.4kHz. Protection resistors = 0
.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
HC55185
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