PDF HC5520CM Data sheet ( Hoja de datos )

Número de pieza	HC5520CM
Descripción	CO/PABX Polarity Reversal Subscriber Line Interface Circuit
Fabricantes	Intersil Corporation
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No Preview Available ! SEMICONDUCTOR HC5520 April 1997 CO/PABX Polarity Reversal Subscriber Line Interface Circuit Features • Normal and Reversed DC Feed • Current Limited Loop Feed • Ringing, Test-In, and Test-Out Relay Drivers • Thermal Shutdown Protection with Alert Signal • On-Hook Transmission • Selectable Transmit and Receive Gain Setting • Selectable 2-Wire Impedance Matching • Zero Crossing Ring Trip Detection and Ring Relay Release • Parallel Digital Control and Status Monitoring • Protection Resistors Inside Feedback Loop Allows the Use of PTC Devices Without Impact on Longitudinal Balance • Thermal Management Features Applications • CO/PABX Line Circuits Description The HC5520 is a Monolithic Subscriber Line Interface Circuit (SLIC) for Analog Subscriber Line cards in Central Ofﬁce and PABX switches. The HC5520 provides a comprehensive set of features for these applications including loop reversal, zero crossing ringing relay operation, long loop drive and a mutually inde- pendent setting of the receive and transmit gains, and the two wire impedance synthesis. Advanced power manage- ment features combined with a small 44 lead MQFP pack- age allow signiﬁcant board space to be freed up for additional line circuits. The HC5520 is fabricated in a Harris state-of-the-art Bonded Wafer High Voltage process, providing freedom from tradi- tional JI latch-up phenomena without the use of additional power supply ﬁltering components or substrate tie connec- tions. The very low parasitics and leakages associated with this process provide an exceptionally ﬂat performance over frequency and temperature. Ordering Information TEMP. PART NUMBER RANGE (oC) PACKAGE HC5520CQ 0 to 70 44 Ld MQFP HC5520CM 0 to 70 44 Ld PLCC PKG. NO. Q44.10x10 N44.65 Block Diagram TA TB TSDO SHDO PRI PDI RCI TBI TAI AGND BGND RGND VBAT VCC VEE TEST CONTROL LOGIC RX TX TX4W RN KZO HC5520 4-WIRE INTERFACE / Z0 2-WIRE INTERFACE BIAS BATTERY REFERENCE CP RDC CDC RING CONTROL POWER MANAGEMENT TIP TIPSEN RINGSEN RING RD RBH RBL CRTD RPSB RPSR RPST RPSG CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © Harris Corporation 1997 1 File Number 4148.2 1 page HC5520 Electrical Speciﬁcations Unless Otherwise Speciﬁed: Typical Parameters are at TA = 25oC, VCC = +5V, VEE = -5V, VBAT = -48V, AGND = BGND = RGND = 0V, Min-Max Parameters are Over Power Supply and Operating Temperature Range. All Transmission Parame- ters are Speciﬁed at 600Ω 2-Wire Terminating Impedance with 0dB transmit and receive gain. (Continued) CONDITIONS PARAMETER MODE LOAD VBAT OTHER CONDITIONS TRANSMISSION PARAMETERS - 4-WIRE TO 4-WIRE ABSOLUTE DELAY FREQ/ LEVEL MIN TYP MAX UNITS Absolute Delay normal 600Ω reverse -48V 1020Hz 0dBm 1.5 µs TRANSMISSION PARAMETERS - OVER LOAD LEVEL (Figures 14, 15) Receive Over Load Level at 4W and 2W normal 600Ω reverse -42V 1% THD 1020Hz 2.5 - - VPEAK Transmit Over Load Level at 2W and 4W normal 600Ω reverse -42V 1% THD 1020Hz 2.15 - - VPEAK TRANSMISSION PARAMETERS - LONGITUDINAL IMPEDANCE (Figure 16) Longitudinal Impedance per Wire normal reverse - -48V 40Hz to - 50 - 100Hz Ω TRANSMISSION PARAMETERS - LONGITUDINAL CURRENT CAPABILITY (Figure 17) Longitudinal Current Limit per Wire normal reverse - -42V Triangle Waveform 40Hz to 100Hz 15 - - mAPEAK TRANSMISSION PARAMETERS - LONGITUDINAL BALANCE (Figure 18) 2-Wire Longitudinal Balance normal 368Ω + reverse 368Ω -48V 300Hz 1020Hz 3400Hz 42 62.2 48 58.7 48 69.5 - dB dB dB 4-Wire Longitudinal Balance normal 368Ω + reverse 368Ω -48V 300Hz 1020Hz 3400Hz 42 66.0 48 67.2 48 77.0 - dB dB dB POWER SUPPLY REJECTION RATIO (Figure 19) PSRR VBAT To 4-Wire PSRR VBAT To 2-Wire PSRR VCC To 4-Wire PSRR VCC To 2-Wire PSRR VEE To 4-Wire PSRR VEE To 2-Wire normal reverse normal reverse normal reverse normal reverse normal reverse normal reverse 600Ω 600Ω 600Ω 600Ω 600Ω 600Ω -48V -48V -48V -48V -48V -48V VBAT = -48V + 100mVRMS VBAT = -48V + 100mVRMS VCC = 4.75V + 100mVRMS VCC = 4.75V + 100mVRMS VEE = -4.75V + 100mVRMS VEE = -4.75V + 100mVRMS 300Hz 300Hz 300Hz 3420Hz 2500Hz 2500Hz 30 30 20 20 20 20 42 42 33 24 30 32 - dBC - dBC - dBC - dBC - dBC - dBC 5 5 Page HC5520 1600Ω 200Ω 20kΩ SW TIP RING RBL 1kΩ RBAL RBH RTPS 100kΩ 50Ω RPT RPR 50Ω 100kΩ RRGS RBL TIPSEN TIP RBH RX RX CVRX 0.47µF 100kΩ VRX SHDO HC5520 CRTD RING TX RINGSEN TX4W RD CRTD 1µF -5V CVTX 0.47µF VTX 100kΩ R4W VBAT VRINGING FIGURE 8. RING TRIP DETECTION TEST CIRCUIT PARAMETER No Ring Trip Detection Ring Trip Detection INPUT SW = Up SW = Down MEASUREMENT SHDO SHDO SPECIFICATIONS SHDO = Hi SHDO = Lo 1800Ω TIP VT VR RING RTPS 100kΩ 50Ω RPT RPR 50Ω 100kΩ RRGS POLARITY REVERSAL COMMAND TIPSEN TIP RX PRI HC5520 RING TX RINGSEN TX4W RX 100kΩ CVRX 0.47µF VRX 100kΩ R4W CVTX 0.47µF VTX tREV VT 90% 90% VR FIGURE 9. POLARITY REVERSAL TIME TEST CIRCUIT AND WAVEFORMS PARAMETER Polarity Reversal Time INPUT Reversal Command MEASUREMENT tREV SPECIFICATIONS tREV 11 11 Page

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