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HC-5502B
Data Sheet February 1999 File Number
2884.5
EIA/ITU PABX SLIC with 30mA Loop Feed
The Intersil SLIC incorporates many of the BORSHT functions on a single IC chip. This includes DC battery feed, a ring relay driver, supervisory and hybrid functions. This device is designed to maintain transmission performance in the presence of externally induced longitudinal currents. Using the unique Intersil dielectric isolation process, the SLIC can operate directly with a wide range of station battery voltages. The SLIC also provides selective denial of power. If the PBX system becomes overloaded during an emergency, the SLIC will provide system protection by denying power to selected subscriber loops. The Intersil SLIC is ideally suited for the design of new digital PBX systems, by eliminating bulky hybrid transformers.
Features
* Capable of 12V or 5V (VB+) Operation * Monolithic Integrated Device * DI High Voltage Process * Compatible With Worldwide PBX Performance Requirements * Controlled Supply of Battery Feed Current for Short Loops (30mA) * Internal Ring Relay Driver * Low Power Consumption During Standby * Switch Hook, Ground Key and Ring Trip Detection Functions * Selective Denial of Power to Subscriber Loops
Ordering Information
PART NUMBER HC1-5502B-5 HC1-5502B-9 HC3-5502B-5 HC4P5502B-5 HC9P5502B-5 TEMP. RANGE (oC) 0 to 75 -40 to 85 0 to 75 0 to 75 0 to 75 PACKAGE 24 Ld CERDIP 24 Ld CERDIP 24 Ld PDIP 28 Ld PLCC 24 Ld SOIC PKG. NO. F24.6 F24.6 E24.6 N28.45 M24.3
Applications
* Solid State Line Interface Circuit for Analog and Digital PBX Systems * Direct Inward Dial (DID) Trunks * Voice Messaging PBXs * Related Literature - AN549, The HC-5502S/4X Telephone Subscriber Line Interface Circuits (SLIC) - AN571, Using Ring Sync with HC-5502A and HC-5504 SLICs
HC-5502B (PLCC) TOP VIEW
VB+ RING N/C TIP AG TX C4
Pinouts
HC-5502B (PDIP, CERDIP, SOIC) TOP VIEW
TIP RING VB + C1* C3 DG RS RD TF
1 2 3 4 5 6 7 8 9
24 TX 23 AG 22 C4 21 RX 20 +IN 19 -IN 18 OUT 17 C2 16 RC 15 PD 14 GKD 13 SHD C1 C3 DG N/C RS 5 6 7 8 9
4
3
2
1
28
27 26
25 RX 24 +IN 23 -IN 22 N/C 21 OUT 20 C2 19 RC
RD 10 TF 11
RF 10 VB- 11 BG 12
12 RF
13 VB -
14 15 BG N/C
16 SHD
17 GKD
18 PD
OPTIONAL
47
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. http://www.intersil.com or 407-727-9207 | Copyright (c) Intersil Corporation 1999
HC-5502B
Absolute Maximum Ratings (Note 1)
Supply Voltage (VB-) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -60 to 0.5V (VB+) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to 15V (VB+ - VB-) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75V Relay Drive Voltage (VRD) . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to 15V
Thermal Information
Thermal Resistance (Typical, Note 2) JA (oC/W) CERDIP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . 52 PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 PLCC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Maximum Junction Temperature (Hermetic Package) . . . . . . .175oC Maximum Junction Temperature (Plastic Package) . . . . . . . . .150oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300oC (PLCC and SOIC - Lead Tips Only)
Operating Conditions
Relay Driver Voltage (VRD) . . . . . . . . . . . . . . . . . . . . . . . . 5V to 12V Positive Supply Voltage (VB+) . . . 4.75V to 5.25V or 10.8V to 13.2V Negative Supply Voltage (VB-). . . . . . . . . . . . . . . . . . . .-42V to -58V High Level Logic Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . 2.4V Low Level Logic Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6V Loop Resistance (RL) . . . . . . . . . . . . . . . . . . . . . . . . . 200 to 1200 Operating Temperature Range HC-5502B-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC HC-5502B-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
Die Characteristics
Transistor Count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 Diode Count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Die Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . .137 mils x 102 mils Substrate Potential. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VBProcess . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. Absolute maximum ratings are limiting values, applied individually, beyond which the serviceability of the circuit may be impaired. Functional operability under any of these conditions is not necessarily implied. 2. JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER On Hook Power Dissipation Off Hook Power Dissipation Off Hook IB+ Off Hook IB+ Off Hook IBOff Hook Loop Current Off Hook Loop Current
Unless Otherwise Specified, VB- = -48V, VB+ = 12V and 5V, AG = BG = DG = 0V, Typical Parameters TA = 25oC. Min-Max Parameters are Over Operating Temperature Range TEST CONDITIONS ILONG = 0, VB+ = 12V (Note 3) RL = 600, ILONG = 0, VB+ = 12V (Note 3) RL = 600, ILONG = 0, TA = -40oC (Note 3) RL = 600, ILONG = 0, TA = 25oC (Note 3) RL = 600, ILONG = 0 (Note 3) RL = 1200, ILONG = 0 (Note 3) RL = 1200, VB- = -42V, ILONG = 0, TA = 25oC (Note 3) RL = 200, ILONG = 0 (Note 3) MIN 17.5 TYP 135 450 21 MAX 235 690 6.0 5.3 39 UNITS mW mW mA mA mA mA mA
Off Hook Loop Current Fault Currents TIP to Ground RING to Ground TIP to RING TIP and RING to Ground Ring Relay Drive VOL Ring Relay Driver Off Leakage Ring Trip Detection Period Switch Hook Detection Threshold
25.5
30
34.5
mA
IOL = 62mA VRD = 12V, RC = 1 = HIGH, TA = 25oC RL = 600, TA = 25oC SHD = VOL SHD = VOH 10 -
14 47 30 47 0.2 2 -
0.5 100 3 5
mA mA mA mA V A Ring Cycles mA mA
48
HC-5502B
Electrical Specifications
PARAMETER Ground Key Detection Threshold GKD = VOL GKD = VOH Loop Current During Power Denial Dial Pulse Distortion Receive Input Impedance Transmit Output Impedance 2-Wire Return Loss SRL LO ERL SRL HI Longitudinal Balance 2-Wire Off Hook 2-Wire On Hook 4-Wire Off Hook Low Frequency Longitudinal Balance R.E.A. Method, (Note 4) RL = 600, 0oC TA 75oC At 1kHz, 0dBm Input Level, Referenced 600 1VRMS 200Hz - 3400Hz, (Note 4) IEEE Method 0oC TA 75oC (Note 4) (Note 4) Referenced to 600 +2.16F (Note 4) 15.5 24 31 dB dB dB RL = 200 Unless Otherwise Specified, VB- = -48V, VB+ = 12V and 5V, AG = BG = DG = 0V, Typical Parameters TA = 25oC. Min-Max Parameters are Over Operating Temperature Range (Continued) TEST CONDITIONS MIN 20 0 TYP 2 110 10 MAX 10 5 20 UNITS mA mA mA ms k
58 60 50 -
65 63 58 0.05 0.02
23 -67 0.2 0.05
dB dB dB dBrnC dBm0p dB
Insertion Loss 2-Wire to 4-Wire, 4-Wire to 2-Wire Frequency Response
200 - 3400Hz Referenced to Absolute Loss at 1kHz and 0dBm Signal Level (Note 4) (Note 4)
-
dB
Idle Channel Noise 2-Wire to 4-Wire, 4-Wire to 2-Wire
-
1 -89 -
5 -85 2
dBrnC dBm0p s
Absolute Delay 2-Wire to 4-Wire, 4-Wire to 2-Wire Trans Hybrid Loss
(Note 4)
-
Balance Network Set Up for 600 Termination at 1kHz VB+ = 5V VB+ = 12V
36
40
-
dB
Overload Level 2-Wire to 4-Wire, 4-Wire to 2-Wire
1.5 1.75 -
VPEAK VPEAK
Level Linearity 2-Wire to 4-Wire, 4-Wire to 2-Wire
At 1kHz, (Note 4) Referenced to 0dBm Level +3 to -40dBm -40 to -50dBm -50 to -55dBm
-
-
0.05 0.1 0.3
dB dB dB
49
HC-5502B
Electrical Specifications
PARAMETER Power Supply Rejection Ratio VB+ to 2-Wire VB+ to Transmit VB- to 2-Wire VB- to Transmit VB+ to 2-Wire VB+ to Transmit VB- to 2-Wire VB- to Transmit Logic Input Current (RS, RC, PD) Logic Inputs Logic `0' VIL Logic `1' VIH Logic Outputs Logic `0' VOL Logic `1' VOH 0V VIN 5V 200 - 16kHz, RL = 600 30 - 60Hz, RL = 600, (Note 4) Unless Otherwise Specified, VB- = -48V, VB+ = 12V and 5V, AG = BG = DG = 0V, Typical Parameters TA = 25oC. Min-Max Parameters are Over Operating Temperature Range (Continued) TEST CONDITIONS MIN TYP MAX UNITS
15 15 15 15 30 30 30 30 -
-
100
dB dB dB dB dB dB dB dB A
2.0
-
0.8 5.5
V V
ILOAD 800A, VB+ = 12V, 5V ILOAD 80A, VB+ = 12V ILOAD 40A, VB+ = 5V
2.7 2.7
0.1 5.0 -
0.5 5.5 5.0
V V V
Uncommitted Op Amp Specifications
PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Differential Input Resistance Output Voltage Swing (Note 4) RL = 10k, VB+ = 12V RL = 10k, VB+ = 5V Output Resistance Small Signal GBW NOTES: 3. ILONG = Longitudinal Current. 4. These parameters are controlled by design or process parameters and are not directly tested. These parameters are characterized upon initial design release, upon design changes which would affect these characteristics, and at intervals to assure product quality and specification compliance. AVCL = 1, (Note 4) (Note 4) TEST CONDITIONS MIN TYP 5 10 20 1 6.2 3 10 1 MAX 6.6 UNITS mV nA nA M VPEAK VPEAK MHz
50
HC-5502B Pin Descriptions
28 PIN PLCC 2 24 PIN DIP/SOIC 1 SYMBOL TIP DESCRIPTION An analog input connected to the TIP (more positive) side of the subscriber loop through a 150 feed resistor and a ring relay contact. Functions with the Ring terminal to receive voice signals from the telephone and for loop monitoring process. An analog input connected to the RING (more negative) side of the subscriber loop through a 150 feed resistor and a ring relay contact. Functions with the Tip terminal to receive voice signals from the telephone and for loop monitoring purposes. Positive Voltage Source - Most positive supply. VB+ is typically 12V or 5V. Capacitor #1 - Optional Capacitor used to improve power supply rejection. This pin should be left open if unused. Capacitor #3 - An external capacitor to be connected between this terminal and analog ground. Required for proper operation of the loop current limiting function, and for filtering VB- supply. Typical value is 0.3F, 30V. Digital Ground - To be connected to zero potential and serves as a reference for all digital inputs and outputs on the SLIC. Ring Synchronization Input - A TTL - compatible clock input. The clock should be arranged such that a positive transition occurs on the negative going zero crossing of the ring voltage source, ensuring that the ring relay is activated and deactivated when the instantaneous ring voltage is near zero. If synchronization is not required, tie to 5V. Relay Driver - A low active open collector logic output. When enabled, the external ring relay is energized. Tip Feed - A low impedance analog output connected to the TIP terminal through a 150 feed resistor. Functions with the RF terminal to provide loop current, feed voice signals to the telephone set, and sink longitudinal current. Ring Feed - A low impedance analog output connected to the RING terminal through a 150 feed resistor. Functions with the TF terminal to provide loop current, feed voice signal to the telephone set, and sink longitudinal current. Negative Voltage Source - Most negative supply. VB- is typically -48V with an operational range of 42V to -58V. Frequently referred to as "battery". Battery Ground - To be connected to zero potential. All loop current and some quiescent current flows into this ground terminal. Switch Hook Detection - A low active LS TTL - compatible logic output. This output is enabled for loop currents exceeding 10mA and disabled for loop currents less than 5mA. Ground Key Detection - A low active LS TTL - compatible logic output. This output is enabled if the DC current into the ring lead exceeds the DC current out of the tip lead by more than 20mA, and disabled if this current difference is less than 10mA. Power Denial - A low active TTL - Compatible logic input. When enabled the switch hook detect (SHD) and ground key detect (GKD) are not necessarily valid, and the relay driver (RD) output is disabled. Ring Command - A low active TTL - Compatible logic input. When enabled, the relay driver (RD) output goes low on the next rising edge of the ring sync (RS) input, as long as the SLIC is not in the power denial state (PD = 0) or the subscriber is not already off- hook (SHD = 0). Capacitor #2 - An external capacitor to be connected between this terminal and digital ground. Prevents false ground key indications from occurring during ring trip detection. Typical value is 0.15F, 10V. This capacitor is not used if ground key function is not required. The analog output of the spare operational amplifier. The inverting analog input of the spare operational amplifier.
3
2
RING
4 5
3 4
VB+ C1 C3
6
5
7
6
DG (Note 5) RS
9
7
10
8
RD
11
9
TF
12
10
RF
13
11
VBBG (Note 1) SHD
14
12
16
13
17
14
GKD
18
15
PD
19
16
RC
20
17
C2
21 23
18 19
OUT -IN
51
HC-5502B Pin Descriptions
28 PIN PLCC 24 25 24 PIN DIP/SOIC 20 21 (Continued)
SYMBOL +IN RX
DESCRIPTION The non-inverting analog input of the spare operational amplifier. Receive Input, 4-Wire Side - A high impedance analog input which is internally biased. Capacitive coupling to this input is required. AC signals appearing at this input differentially drive the Tip feed and Ring feed amplifiers, which in turn drive tip and ring through 300 of feed resistance on each side of the line. Capacitor #4 - An external capacitor to be connected between this terminal and analog ground. This capacitor prevents false ground key indication and false ring trip detection from occurring when longitudinal currents are induced onto the subscriber loop from nearby power lines and other noise sources. This capacitor is also required for the proper operation of ring trip detection. Typical value is 0.5F to 1.0F, 20V. This capacitor should be nonpolarized. Analog Ground - To be connected to zero potential and serves as a reference for the transmit output (TX) and receive input (RX) terminals. Transmit Output, 4-Wire Side - A low impedance analog output which represents the differential voltage across Tip and Ring. Transhybrid balancing must be performed (using the SLIC microcircuit's spare op amp) beyond this output to completely implement two to four wire conversion. This output is unbalanced and referenced to analog ground. Since the DC level of this output varies with loop current, capacitive coupling to the next stage is essential. No internal connection.
26
22
C4
27
23
AG (Note 5) TX
28
24
1, 8, 5, 22 NOTE:
NC
5. All grounds (AG, BG, and DG) must be applied before VB+ or VB-. Failure to do so may result in premature failure of the part. If a user wishes to run separate grounds off a line card, the AG must be applied first.
Functional Diagram
RING VOLTAGE RING SYNC RS RC RD RING RELAY 150 150 2 WIRE LOOP SECONDARY PROTECTION BG VB RF 150 RING 150 POWER DENIAL PD SLIC MICROCIRCUIT RING -1 LOOP CURRENT LIMITER LINE DRIVERS +IN + OP AMP TF VB BATTERY FEED +1 OUT TIP + RING CONTROL RING TRIP LOOP MONITORING DIFF AMP SHD SWITCH HOOK DETECTION GKD GROUND KEY DETECTION TIP
RING COMMAND
-
TX
TRANSMIT OUTPUT
-
-IN RX RECEIVE INPUT
52
HC-5502B Schematic Diagram
HC-5502B Pin Numbers for DIP/SOIC Package
21 RCV
22 C4
11 VBAT
12 BAT GND
23 ANA GND
6 DIG VB+ GND
3 VB +
4 C1
20 +
19
18 VB + OUT
+
VB + 1 TF VBAT IB4 A-400 TIP FEED AMP
+
R17 VB2
VOLTAGE AND CURRENT BIAS NETWORK
IB1 IB2 IB3 IB4 IB5 IB6 IB7 IB8 VBAT IB9 IB10 IB11
VB1 VB2 VB3 VB4 VB5 -5V
A-500 OP AMP
VBAT IB3
R12 R7 1 TIP R8 R10 R9 R11 VBAT R5 VB + A-100 TRANSV'L I/VAMP IB6 VB + QD3 QD36 A-200 LONG'L I/V AMP IB7 VB+ R20 + VBAT
RING TRIP DETECTOR +5V
-5V IB10 VB+
GK VBAT IB8 VB4 GND SHORTS CURRENT LIMITING IB1
VBAT VB +
GKD 14
SWITCH HOOK DETECTOR VB + VBAT R6 + IB9
+ VB3 VBAT IIL LOGIC INTERFACE SH C2 17
R3 2 RING R4 R1 R2 R16 R15
SHD 13
-
VB1 RC 16
VBAT/2 REFERENCE VB2 R14 R21 R18
QD27
QD28 THERMAL LIMITING VB5 RFC PD 15
10 RF
A-300 RING FEED AMP VBAT
LOOP CURRENT LIMITING IB2 VB5 +
IB5
R19 VBAT R13 VBAT VBAT
C3 5
TX 24
RS 7
RD 8
53
HC-5502B Logic Diagram
HC-5502B LOGIC GATE SCHEMATIC
C2
GK
1
2
LOGIC BIAS DELAY 6 4 5 12 8 3
7 SH 16 10
9
13 RELAY DRIVER
11 15 15 TTL TO STTL TO R21
14
TTL TO STTL
TTL TO STTL
C B A B A
STTL TO TTL
STTL TO TTL
RS
RC
PD
C SCHOTTKY LOGIC
RD
SHD
GKD
Overvoltage Protection and Longitudinal Current Protection
The SLIC device, in conjunction with an external protection bridge, will withstand high voltage lightning surges and power line crosses. High voltage surge conditions are as specified in Table 1. The SLIC will withstand longitudinal currents up to a maximum or 30mARMS, 15mARMS per leg, without any performance degradation.
PARAMETER Longitudinal Surge Metallic Surge
TABLE 1. TEST CONDITION 10s Rise/ 1000s Fall 10s Rise/ 1000s Fall T/GND R/GND 50/60Hz Current T/GND R/GND 10s Rise/ 1000s Fall 11 Cycles Limited to 10ARMS PERFORMANCE (MAX) 1000 (Plastic) 500 (Ceramic) 1000 (Plastic) 500 (Ceramic) 1000 (Plastic) 500 (Ceramic) 700 (Plastic) 350 (Ceramic)
UNITS VPEAK VPEAK VPEAK VPEAK VPEAK VPEAK VRMS VRMS
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
54
HC-5502B Applications Diagram
SYSTEM CONTROLLER
Z1 15
PTC RING GENERATOR 150VPEAK (MAX)
12V
13
14
7
16 BALANCE NETWORK 21 24 C6 R1 R2 ZB R3 C5 C7 PCM SWITCHING FILTER/ NETWORK CODEC
RING RELAY RB1 RB2
POWER SWITCH GROUND RING RING SYNC CMD DENIAL HOOK KEY 8 DETECT DETECT RD RECEIVE TRANSMIT
TIP
1 TIP 9 TIP FEED
SLIC HC-5502B OP AMP
+IN -IN OUT
20 19 18
RS
CS
VBSUBSCRIBER LOOP 10
RING FEED C1 4 17 5 22 C4 C3 C2 C1
PRIMARY PROTECTION
RB4
C2 C3
RING RB3
2
C4 RING NEG. BATT. 11 C8 -48V BATT. GND. 12 DIG. GND. 6 ANA. GND. 23 C9 VB+ POS. SUPP. 3
FIGURE 1. TYPICAL LINE CIRCUIT APPLICATION WITH THE MONOLITHIC SLIC
Typical Component Values C1 = 0.5F (Note 6). C2 = 0.15F, 10V. C3 = 0.3F, 30V. C4 = 0.5F to 1.0F, 10%, 20V (Should be nonpolarized). C5 = 0.5F, 20V. C6 = C7 = 0.5F (10% Match Required) (Note 7), 20V. C8 = 0.01F, 100V. C9 = 0.01F, 20V, 20%.
NOTES: 6. C1 is an optional capacitor used to improve VB+ supply rejection. This pin must be left open if unused. 7. To obtain the specified transhybrid loss it is necessary for the three legs of the balance network, C6-R1 and R2 and C7-ZB-R3, to match in impedance to within 0.3%. Thus, if C6 and C7 are 1F each, a 20% match is adequate. It should be noted that the transmit output to C6 sees a 22V step when the loop is closed. Too large a value for C6 may produce an excessively long transient at the op amp output to the PCM Filter/CODEC. A 0.5F and 100k gives a time constant of 50ms. The uncommitted op amp output is internally clamped to stay within 5.5V and also has current limiting protection. 8. Secondary protection diode bridge recommended is a 2A, 200V type. 9. All grounds (AG, BG, and DG) must be applied before VB+ or VB-. Failure to do so may result in premature failure of the part. If a user wishes to run separate grounds off a line card, the AG must be applied first. 10. Pin numbers given for DIP/SOIC package.
R1 = R2 = R3 = 100k (0.1% Match Required, 1% absolute value), ZB = 0 for 600 Terminations (Note 7). RB1 = RB2 = RB3 = RB4 = 150 (0.1% Match Required, 1% absolute value). RS = 1k, CS = 0.1F, 200V typically, depending on VRING and line length. Z1 = 150V to 200V transient protection. PTC used as ring generator ballast.
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