HC55185
TM
Data Sheet
April 2000
File Number
4831.2
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 500Ω (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
POL
CDC
VBL
VBH
ILIM
DC
CONTROL
BATTERY
SWITCH
RINGING
PORT
VRS
TIP
RING
2-WIRE
PORT
TRANSIENT
CURRENT
LIMIT
TRANSMIT
SENSING
4-WIRE
PORT
TL
VRX
VTX
-IN
VFB
SW+
SW-
TEST
ACCESS
DETECTOR
LOGIC
CONTROL
LOGIC
F2
F1
F0
RTD RD E0 DET ALM
BSEL
SWC
4-1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil and Design is a trademark of Intersil Corporation.
|
Copyright
©
Intersil Corporation 2000
RSLIC18™ is a trademark of Intersil Corporation.
HC55185
Ordering Information (PLCC Package Only)
PART NUMBER
HIGH BATTERY (VBH)
100V
HC55185AIM
HC55185BIM
HC55185CIM
HC55185DIM
HC55185ECM
HC55185FCM
HC5518XEVAL1
85V
75V
LONGITUDINAL
BALANCE
58dB
53dB
FULL
TEST
TEMP.
RANGE
o
C
PACKAGE
PACKAGE
NO.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
-40 to 85
-40 to 85
-40 to 85
-40 to 85
0 to 75
0 to 85
28 Ld PLCC
28 Ld PLCC
28 Ld PLCC
28 Ld PLCC
28 Ld PLCC
28 Ld PLCC
N28.45
N28.45
N28.45
N28.45
N28.45
N28.45
Evaluation board platform, including CODEC.
Also available in Tape and Reel
Device Operating Modes
MODE
Low Power Standby
Forward Active
Unused
Reverse Active
Ringing
Forward Loop Back
Tip Open
Power Denial
F2
0
0
0
0
1
1
1
1
F1
0
0
1
1
0
0
1
1
F0
0
1
0
1
0
1
0
1
E0 = 1
SHD
SHD
n/a
SHD
RTD
SHD
SHD
n/a
E0 = 0
GKD
GKD
n/a
GKD
RTD
GKD
GKD
n/a
HC55185A
HC55185B
HC55185C
HC55185D
HC55185E
HC55185F
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Device Pinout
HC55185
(PLCC)
TOP VIEW
BGND
RING
VBH
VBL
ILIM
25 RTD
24 CDC
23 VCC
22 -IN
21 VFB
20 VTX
19 VRX
12
DET
13
ALM
14 15
BSEL
AGND
16
TL
17
POL
18
VRS
4
SW+
SW-
SWC
F2
F1
F0
E0
5
6
7
8
9
10
11
TIP
3
2
1
28 27 26
4-2
RD
HC55185
Absolute Maximum Ratings
T
A
= 25
o
C
Thermal Information
Thermal Resistance (Typical, Note 1)
θ
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)
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
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.
θ
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 600Ω 2-wire terminating impedance over the frequency band of 300Hz to
3.4kHz. Protection resistors = 0Ω.
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PARAMETER
RINGING PARAMETERS
VRS Input Impedance (Note 2)
Differential Ringing Gain (Note 3)
Ringing Voltage Total Distortion
4-Wire to 2-Wire Ringing Off Isolation
2-Wire to 4-Wire Transmit Isolation
Centering Voltage Accuracy
450
VRS to 2-wire, R
LOAD
=
∞
R
L
= 1.3 kΩ, V
T-R
= |V
BH
| -5
Active mode, referenced to VRS input
Ringing mode referenced to the differential ringing
amplitude
Tip, Referenced to V
BH
/2 + 0.5
Ring, Referenced to V
BH
/2 + 0.5
78
-
-
-
-
-
-
80
-
90
80
2.5
2.5
-
82
3.0
-
-
-
-
kΩ
V/V
%
dB
dB
V
V
AC TRANSMISSION PARAMETERS
Receive Input Impedance (Note 2)
Transmit Output Impedance (Note 2)
4-Wire Port Overload Level
2-Wire Port Overload Level
2-Wire Return Loss
THD = 1%
THD = 1%
300Hz
1kHz
3.4kHz
2-Wire Longitudinal Balance (Notes 4, 5)
Forward Active, Grade A and B
Forward Active, Grade C, D and E
4-Wire Longitudinal Balance
Forward Active, Grade A and B
Forward Active, Grade C, D and E
160
-
3.1
3.1
-
-
-
58
53
58
53
-
-
3.5
3.5
24
40
21
62
59
67
64
-
1
-
-
-
-
-
-
-
-
-
kΩ
Ω
V
PK
V
PK
dB
dB
dB
dB
dB
dB
dB
4-3
HC55185
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 600Ω 2-wire terminating impedance over the frequency band of 300Hz to
3.4kHz. Protection resistors = 0Ω.
TEST CONDITIONS
+3 to -40dBm, 1kHz
-40 to -50dBm, 1kHz
-50 to -55dBm, 1kHz
Longitudinal Current Capability (Per Wire) (Note 2)
Test for False Detect
Test for False Detect, Low Power Standby
4-Wire to 2-Wire Insertion Loss
2-Wire to 4-Wire Insertion Loss
4-Wire to 4-Wire Insertion Loss
Forward Active Idle Channel Noise (Note 5)
2-Wire C-Message, T = 25
o
C
4-Wire C-Message, T = 25
o
C
Reverse Active Idle Channel Noise (Note 5)
2-Wire C-Message, T = 25
o
C
4-Wire C-Message, T = 25
o
C
DC PARAMETERS
Off Hook Loop Current Limit
Programming Accuracy
Programming Range
Off Hook Transient Current Limit
Programming Accuracy
Programming Range
Loop Current During Low Power Standby
Open Circuit Voltage
(|Tip - Ring|)
Forward Polarity Only
V
BL
= -16V
V
BL
= -24V
V
BH
> -60V
Low Power Standby
Open Circuit Voltage
(Tip - Ring)
Absolute Open Circuit Voltage
V
BL
= -48V
V
BH
> -60V
V
RG
in LPS and FA
V
TG
in RA
V
BH
> -60V
-8.5
15
-10
40
18
-
14
43
-
43
-
-
-
-
-
-
8.0
15.5
49
44.5
51.5
-53
+8.5
45
+10
100
26
-
17
-
-
-
-56
%
mA
%
mA
mA
V
DC
V
DC
V
DC
V
DC
V
DC
V
DC
MIN
-
-
-
20
10
-0.20
-6.22
-6.22
-
-
-
-
TYP
0.025
0.050
0.100
-
-
0.00
-6.02
-6.02
10
4
11
5
MAX
-
-
-
-
-
+0.20
-5.82
-5.82
13
7
14
8
UNITS
dB
dB
dB
mA
RMS
mA
RMS
dB
dB
dB
dBrnC
dBrnC
dBrnC
dBrnC
PARAMETER
2-Wire to 4-Wire Level Linearity
4-Wire to 2-Wire Level Linearity
Referenced to -10dBm
TEST ACCESS FUNCTIONS
Switch On Voltage
Loopback Max Battery
LOOP DETECTORS AND SUPERVISORY FUNCTIONS
Switch Hook Programming Range
Switch Hook Programming Accuracy
Dial Pulse Distortion
Ring Trip Comparator Threshold
Ring Trip Programming Current Accuracy
Ground Key Threshold
Thermal Alarm Output
IC Junction Temperature
Assumes 1% External Programming Resistor
5
-10
-
2.3
-10
-
-
-
-
-
2.45
-
12
175
15
+10
1
2.9
+10
-
-
mA
%
%
V
%
mA
o
C
I
OL
= 45mA
-
-
0.30
-
0.60
52
V
V
4-4
HC55185
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 600Ω 2-wire terminating impedance over the frequency band of 300Hz to
3.4kHz. Protection resistors = 0Ω.
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PARAMETER
LOGIC INPUTS (F0, F1, F2, E0, SWC)
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
LOGIC OUTPUTS (DET, ALM)
Output Low Voltage
Output High Voltage
SUPPLY CURRENTS
Low Power Standby, BSEL = 1
I
CC
I
BH
Forward or Reverse, BSEL = 0
I
CC
I
BL
Forward, BSEL = 1
I
CC
I
BL
I
BH
Ringing, BSEL = 1
I
CC
I
BL
I
BH
Forward Loopback, BSEL = 0
I
CC
I
BL
Tip Open, BSEL = 0
I
CC
I
BL
Power Denial, BSEL = 0 or 1
I
CC
I
BL
ON HOOK POWER DISSIPATION (Note 6)
Forward or Reverse
Low Power Standby
V
BL
= -24V
V
BH
= -100V
V
BH
= -85V
V
BH
= -75V
Ringing
V
BH
= -100V
V
BH
= -85V
V
BH
= -75V
OFF HOOK POWER DISSIPATION (Note 6)
Forward or Reverse
POWER SUPPLY REJECTION RATIO
V
BL
= -24V
I
OL
= 5mA
I
OH
= 100µA
V
IL
= 0.4V
V
IH
= 2.4V
-
2.0
-20
-
-
-
-
-
0.8
-
-
1
V
V
µA
µA
-
2.4
.15
3.5
0.4
-
V
V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3.9
0.66
4.9
1.2
7.0
0.9
2.2
6.4
0.3
2.0
10.3
23.5
3.8
.3
4.0
0.22
6.0
0.90
6.5
2.5
9.5
2.0
3.0
9.0
1.0
3.0
13.5
32
5.5
1.0
6.0
0.5
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
-
-
-
-
-
-
-
55
85
75
65
250
230
225
-
-
-
-
-
-
-
mW
mW
mW
mW
mW
mW
mW
-
305
-
mW
4-5
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