DATASHEET
ISL5585
3.3V Ringing SLIC Family for Voice Over Broadband (VOB)
The 3.3V family of ringing subscriber line interface circuits
(SLIC) supports analog Plain Old Telephone Service
(POTS) in short and medium loop length, wireless and
wireline voice over broadband applications. Ideally suited for
customer premise equipment, this family of products offers
flexibility to designers with high ringing voltage and low
power consumption system requirements.
The ISL5585 family is capable of operating with 100V ringing
battery supply, which translates directly to the amount of
ringing voltage supplied to the subscriber. With the high
operating voltage, subscriber loop lengths can be extended
to 500 (i.e., 5,000 feet) and beyond, allowing this family to
serve emerging Fiber In The Loop (FITL) markets.
Other key features across the product family include: 3.3V
V
CC
operation, 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 ten product offerings of the ISL5585 providing
various grades of ringing battery voltage and longitudinal
balance.
FN6026
Rev 6.00
October 21, 2004
Features
• 3.3V Operation
• Onboard Ringing Generation
• Low Standby Power Consumption (75V, 65mW)
• 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
• Balanced and Unbalanced Ringing
• Thermal Shutdown with Alarm Indicator
• 28 Lead Surface Mount Packaging
• QFN Package:
- Compliant to JEDEC PUB95 MO-220
QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
•
Pb-Free Available (RoHS Compliant)
Block Diagram
POL
ILIM
CDC
VBL
VBH
Applications
• Short Loop Access Platforms
RINGING
PORT
VRS
DC
CONTROL
BATTERY
SWITCH
• Voice Over Internet Protocol (VoIP)
• Voice Over Cable and DSL Modems
TIP
RING
TL
2-WIRE
PORT
TRANSIENT
CURRENT
LIMIT
• Internet Protocol PBX
TRANSMIT
SENSING
4-WIRE
PORT
AUX
VTX
-IN
VFB
• FiberTo The Home (FTTH)
• Remote Subscriber Units
• Ethernet Terminal Adapters
SW+
SW-
TEST
ACCESS
DETECTOR
LOGIC
CONTROL
LOGIC
F2
F1
F0
Related Literature
• AN1038, User’s Guide for Development Board
• AN9824, Modeling of the AC Loop
RT SH E0 DET ALM
BSEL SWC
• TB379 Thermal Characterization of Packages for ICs
• AN9922, Thermal Characterization and Modeling of the
RSLIC18 in the Micro Leadframe Package
FN6026 Rev 6.00
October 21, 2004
Page 1 of 23
ISL5585
Ordering Information
HIGH BATTERY (VBH)
PART NUMBER
ISL5585AIM
ISL5585AIMZ
(See Note)
ISL5585BIM
ISL5585BIMZ
(See Note)
ISL5585CIM
ISL5585CIMZ
(See Note)
ISL5585DIM
ISL5585DIMZ
(See Note)
ISL5585ECM
ISL5585ECMZ
(See Note)
ISL5585ECR
ISL5585ECRZ
(See Note)
ISL5585FCM
ISL5585FCMZ
(See Note)
ISL5585FCR
ISL5585FCRZ
(See Note)
ISL5585GCM
ISL5585GCMZ
(See Note)
ISL5585GCR
ISL5585GCRZ
(See Note)
ISL5585 XXX
100V
85V
75V
LONGITUDINAL
BALANCE
58dB
53dB
FULL
TEST
TEMP.
RANGE (°C)
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
0 to 75
0 to 75
0 to 75
0 to 75
PACKAGE
28 Ld PLCC
28 Ld PLCC
(Pb-free)
28 Ld PLCC
28 Ld PLCC
(Pb-free)
28 Ld PLCC
28 Ld PLCC
(Pb-free)
28 Ld PLCC
28 Ld PLCC
(Pb-free)
28 Ld PLCC
28 Ld PLCC
(Pb-free)
32 Pad QFN
32 Pad QFN
(Pb-free)
28 Ld PLCC
28 Ld PLCC
(Pb-free)
32 Pad QFN
32 Pad QFN
(Pb-free)
28 Ld PLCC
28 Ld PLCC
(Pb-free)
32 pad QFN
32 pad QFN
(Pb-free)
PKG. DWG. #
N28.45
N28.45
N28.45
N28.45
N28.45
N28.45
N28.45
N28.45
N28.45
N28.45
L32.7x7*
L32.7x7*
N28.45
N28.45
L32.7x7*
L32.7x7*
N28.45
N28.45
L32.7x7*
L32.7x7*
0 to 85
0 to 85
0 to 85
0 to 85
0 to 85
0 to 85
0 to 85
0 to 85
Evaluation board platform, including CODEC.
Also available in Tape and Reel
*Reference
“Special Considerations for the QFN Package” text.
NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination
finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-
free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020C.
FN6026 Rev 6.00
October 21, 2004
Page 2 of 23
ISL5585
Device Operating Modes
MODE
Low Power Standby
Forward Active
Unbalanced Ringing
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 E0 = 0 ISL5585A
SHD
SHD
RTD
SHD
RTD
SHD
SHD
n/a
GKD
GKD
RTD
GKD
RTD
GKD
GKD
n/a
ISL5585B
ISL5585C ISL5585D ISL5585E ISL5585F
ISL5585G
ISL5585 QFN
TOP VIEW
Pinouts
BGND
V
BH
V
BL
RING
SCC
26
TIP
NC
BGND
RING
V
BH
V
BL
TIP
ILIM
SH
32
SW+
SW-
1
2
3
4
5
6
7
8
9
DET
31
30
29
28
27
SH
25
24 ILIM
23 RT
22 CDC
21 VCC
20 -IN
19 VFB
18 VTX
17 AUX
16
NC
ISL5585 (PLCC)
TOP VIEW
4
SW+
SW-
SWC
F2
F1
F0
E0
5
6
7
8
9
10
11
12
DET
3
2
1
28
27
26
25
24
23
22
21
20
19
RT
CDC
V
CC
-IN
VFB
VTX
AUX
SWC
F2
F1
F0
E0
NC
13
ALM
14
AGND
15
BSEL
16
TL
17
POL
18
VRS
10
ALM
11
AGND
12
BSEL
13
TL
14
POL
15
VRS
Pin Description
PLCC
1
2
3
4
5
6
7
8
9
QFN
29
30
31
32
1
2
3
4
5
SYMBOL
TIP
BGND
VBL
VBH
SW+
SW-
SWC
F2
F1
TIP power amplifier output.
Battery Ground - To be connected to zero potential. All loop current and longitudinal current flow from this ground.
Internally separate from AGND. This ground must be connected to the same potential as AGND.
Low battery supply connection.
High battery supply connection for the most negative battery.
Uncommitted switch positive terminal.
Uncommitted switch negative terminal.
Switch control input. This TTL compatible input controls the uncommitted switch, with a logic “0” enabling the switch
and logic “1” disabling the switch.
Mode Control Input - MSB. F2-F0 for the TTL compatible parallel control interface for controlling the various modes of
operation of the device.
Mode control input.
DESCRIPTION
FN6026 Rev 6.00
October 21, 2004
Page 3 of 23
ISL5585
Pin Description
PLCC
10
11
QFN
6
7
F0
E0
(Continued)
DESCRIPTION
Mode control input.
Detector Output Selection Input. This TTL input controls the multiplexing of the SHD (E0 = 1) and GKD (E0 = 0)
comparator outputs to the DET output based upon the state at the F2-F0 pins (see the Device Operating Modes table
shown on page 2).
Detector Output - This TTL output provides on-hook/off-hook status of the loop based upon the selected operating
mode. The detected output will either be switch hook, ground key or ring trip (see the Device Operating Modes table
shown on page 2). DET will be latched low following a ring trip. Unlatching the DET pin is accomplished by changing
logic state.
Thermal Shutdown Alarm. This pin signals the internal die temperature has exceeded safe operating temperature
(approximately 175°C) and the device has been powered down automatically.
Analog ground reference. This pin should be externally connected to BGND.
Selects between high and low battery, with a logic “1” selecting the high battery and logic “0” the low battery.
Programming pin for the transient current limit feature, set by an external resistor to ground.
External capacitor on this pin sets the polarity reversal time.
Ringing Signal Input - Analog input for driving 2-wire interface while in Ring Mode.
Auxiliary input - Float if not used.
Transmit Output Voltage - Output of impedance matching amplifier, AC couples through a resistor to CODEC.
Feedback voltage for impedance matching. This voltage is scaled to accomplish impedance matching. The CFB
capacitor connects between this pin and the -IN pin. The CFB cap needs to be non-polarized for proper device
operation in the Reverse Active mode. Ceramic surface mount capacitors (1206 body style) are available from
Panasonic with a 6.3V voltage rating. These can be used for CFB since it is internally limited to approximately ±3V.
Analog Receive Voltage - 4-wire analog audio input voltage. connects to CODEC via receive gain setting resistor R
IN
(see Figure 18). Resistor R
IN
needs to be as close to the -IN pin as possible to minimize parasitic capacitance.
Positive voltage power supply,+3.3V
DC Biasing Filter Capacitor - Connects between this pin and V
CC
.The CDC capacitor may be either polarized or non
polarized with a 6.3V voltage rating.
Ring trip filter network.
Loop Current Limit programming resistor.
Switch hook detection threshold programming resistor.
Substrate Common Connection - Connect this pin to VBH Supply. This pin is used to connect the substrate of the die
and the thermal heatsink plane of the QFN package.
RING power amplifier output.
SYMBOL
12
9
DET
13
14
15
16
17
18
19
20
21
10
11
12
13
14
15
17
18
19
ALM
AGND
BSEL
TL
POL
VRS
AUX
VTX
VFB
22
23
24
25
26
27
---
28
20
21
22
23
24
25
26
27
-IN
VCC
CDC
RT
ILIM
SH
SCC
RING
FN6026 Rev 6.00
October 21, 2004
Page 4 of 23
ISL5585
Absolute Maximum Ratings
T
A
= 25°C
Maximum Supply Voltages
V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +7V
V
CC
- V
BH
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110V
Uncommitted Switch Voltage . . . . . . . . . . . . . . . . . . . . . . . -110V
Maximum Tip/Ring Negative Voltage Pulse (Note 8) . . . . . . VBH -15V
Maximum Tip/Ring Positive Voltage Pulse (Note 8) . . . . . . . . . . . .+8V
ESD (Human Body Model). . . . . . . . . . . . . . . . . . . . . . . . . . . 1000V
Thermal Information
Thermal Resistance (Typical)
JA
(°C/W)
JC
(°C/W)
PLCC (Note 1) . . . . . . . . . . . . . . . . . . .
55
N/A
QFN (Note 2) . . . . . . . . . . . . . . . . . . . .
28
1
Maximum Junction Temperature Plastic . . . . . . . . . . . . . . . . 150°C
Maximum Storage Temperature Range . . . . . . . . . -65°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300°C
(PLCC - Lead Tips Only)
For Recommended soldering conditions see Tech Brief TB389.
Operating Conditions
Temperature Range
Commercial (C suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 85°C
Industrial (I suffix). . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to 85°C
Positive Power Supply (V
CC
). . . . . . . . . . . . . . . . . . . . +3.3V
10%
Low Battery Power Supply (V
BL
) . . . . . . . . . . . . . -16V to -52V,
5%
High Battery Power Supply (V
BH
)
ISL5585AIM, CIM, GCM, GCR . . . . . . . . . . . . . . V
BL
to 100V,
5%
ISL5585BIM, DIM. . . . . . . . . . . . . . . . . . . . . . . . V
BL
to -85V,10%
ISL5585ECM, ECR, FCM, FCR. . . . . . . . . . . . . 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.
NOTES:
1.
JA
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features.
JC,
the
“case temp” is measured at the center of the exposed metal pad on the package underside. See Tech Brief TB379.
Electrical Specifications
Unless Otherwise Specified, T
A
= -40°C to 85°C for industrial (I) grade and T
A
= 0°C to 85°C for commercial
(C) grade, V
BL
= -24V, V
BH
= -100V, -85V or -75V, V
CC
= +3.3V, AGND = BGND = 0V, loop current limit =
25mA. All AC transmission parameters are specified at 600W 2-wire terminating impedance over the frequency
band of 300Hz to 3.4kHz. Protection resistors = 0W.
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PARAMETER
RINGING PARAMETERS
VRS Input Impedance (Note 3)
Differential Ringing Gain (Note 4)
450
Balanced Ringing, VRS to 2-Wire, R
LOAD
=
Unbalanced Ringing, VRS to 2-Wire, R
LOAD
=
78
38
-
-
-
-
-
-
-
-
80
40
± 2.5
± 2.5
67
33.5
-
90
80
-
82
42
-
-
-
-
4.0
-
-
k
V/V
V/V
V
V
V
RMS
V
RMS
%
dB
dB
Centering Voltage Accuracy
Tip, Referenced to V
BH
/2 + 0.5 (Note 9)
Ring, Referenced to V
BH
/2 + 0.5
Open Circuit Ringing Voltage
Balanced Ringing, VRS Input=0.840V
RMS
Unbalanced Ringing, VRS Input=0.840V
RMS
Ringing Voltage Total Distortion
4-Wire to 2-Wire Ringing Off Isolation
2-Wire to 4-Wire Transmit Isolation
AC TRANSMISSION PARAMETERS
Auxiliary Input Impedance (Note 3)
Transmit Output Impedance (Note 3)
4-Wire Port Overload Level
2-Wire Port Overload Level
R
L
=1.3 k, V
T-R
=|V
BH
| -5
Active Mode, Referenced to VRS Input
Ringing Mode Referenced to the Differential Ringing
Amplitude
160
-
THD=1%
THD=1%
-
3.1
-
-
1.0
3.5
-
1
-
-
k
V
PK
V
PK
FN6026 Rev 6.00
October 21, 2004
Page 5 of 23
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