ISL1557IRZ-T7

DATASHEET ISL1557A FN6568 Rev 3.00 Mar 2, 2018 12V xDSL Differential Line Driver with Enhanced Output Protection The ISL1557A is a dual operational amplifier designed for VDSL2 and ADSL line driving in DMT based solutions. This device features a high drive capability of 750mA while consuming only 6mA of supply current per amplifier and operating from a single 4.5V to 12V supply. The driver achieves a typical distortion of -80dBc at 150kHz into a 25Ω load. The ISL1557A is designed with stronger output clamps to enhance protection against lightning transients. Features The ISL1557A is available in the thermally-enhanced 16 Ld QFN and 10 Ld HMSOP package and is specified for operation over the full -40°C to +85°C temperature range. The ISL1557A has two control pins (C0 and C1) for controlling the bias and enable/disable of the outputs. These controls allow for lowering the power to fit the performance/power ratio for the application. • -75dBc typical driver output distortion at 4MHz The ISL1557A is ideal for ADSL2+, SDSL, HDSL2, and VDSL line driving applications, including both 14.5dBm and 21dBm applications. Related Literature For a full list of related documents, visit our website • ISL1557A product page • 21dBm output power capability • Drives up to 750mA from a +12V supply • 20VP-P differential output drive into 21Ω • -80dBc typical driver output distortion at full output at 150kHz • -82dBc typical driver output distortion at 10MHz • -79dBc typical driver output distortion at 17MHz • Low quiescent current of 6mA per amplifier • Supply range - ISL1557AIUEZ . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 12V - ISL1557AIRZ . . . . . . . . . . . . . . ±2.25V to ±6V, 4.5V to 12V • 300MHz bandwidth • Thermal shutdown • Pb-free (RoHS compliant) Applications • VDSL2 line drivers • ADSL2+ CPE line driving • G.SHDSL and HDSL2 line drivers FN6568 Rev 3.00 Mar 2, 2018 Page 1 of 12 ISL1557A Ordering Information PART NUMBER (Notes 2, 3) PART MARKING TEMP. RANGE (°C) TAPE AND REEL (UNITS) ISL1557AIRZ 155 7AIRZ -40 to +85 - ISL1557AIRZ-T7 (Note 1) 155 7AIRZ -40 to +85 1k ISL1557AIUEZ (No longer available or supported) BBBGA -40 to +85 - PACKAGE (Pb-Free) PKG. DWG. # 16 Ld 4x4 QFN L16.4x4H 16 Ld 4x4 QFN (Tape and Reel) L16.4x4H 10 Ld HMSOP MDP0050 NOTES: 1. Refer to TB347 for details about reel specifications. 2. These Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. 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-020 3. For Moisture Sensitivity Level (MSL), refer to the ISL1557A product information page. For more information about MSL, refer to TB363. Pin Configurations OUTB TOP VIEW VS+ TOP VIEW NC ISL1557A (10 LD HMSOP) OUTA ISL1557A (16 LD QFN) 16 15 14 13 NC 1 VS+ 1 NC 2 OUTA 3 12 NC INA- 2 11 INBVS-* INA+ 3 10 INB+ 5 6 7 8 NC VS- C0 9 NC GND 4 NO AI INA- 4AV R E NG 5 INA+ LO O E VLS-* B LA R D TE 10ROUTB O PP SU 9 INB- 8 INB+ 7 C1 6 C0 C1 *THERMAL PAD MUST BE CONNECTED TO NEGATIVE SUPPLY: VS-. QFN PACKAGE CAN BE USED IN SINGLE AND DUAL SUPPLY APPLICATIONS. *THERMAL PAD MUST BE CONNECTED TO NEGATIVE SUPPLY: VS-. HMSOP PACKAGE CAN BE USED IN SINGLE SUPPLY APPLICATIONS ONLY. Pin Descriptions 16 LD QFN 10 LD HMSOP PIN NAME 1, 5, 6, 12, 15 2 NC No connect 2 4 INA- Inverting input of Amplifier A 3 5 INA+ Non-inverting input of Amplifier A 4 Thermal Pad GND Ground connect 7 Thermal Pad VS- Negative supply 8 6 C0 (Note 4) Current control bias pin 9 7 C1 (Note 4) Current control bias pin 10 8 INB+ Non-inverting input of Amplifier B 11 9 INB- Inverting input of Amplifier B 13 10 OUTB Output of Amplifier B 14 1 VS+ Positive supply 16 3 OUTA Output of Amplifier A FN6568 Rev 3.00 Mar 2, 2018 FUNCTION Page 2 of 12 ISL1557A Pin Descriptions 16 LD QFN 10 LD HMSOP PIN NAME FUNCTION NOTE: 4. The single DSL port is made of Amplifiers A and B. C0 and C1 control IS settings for the DSL port. FN6568 Rev 3.00 Mar 2, 2018 Page 3 of 12 ISL1557A Absolute Maximum Ratings Thermal Information (TA = +25°C) VS+ Voltage to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +13.2V VIN+ Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GND to VS+ Current into any Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mA Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75mA C0, C1 to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6.6V ESD Rating Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1kV Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5kV Ambient Operating Temperature Range . . . . . . . . . . . . . . . -40°C to +85°C Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-60°C to +150°C Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .+150°C Power Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . .see Figure 23 on page 8 Pb-Free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493 CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. Electrical Specifications PARAMETER VS = 12V, RF = 750Ω, RL-DIFF = 50Ω, CO = C1 = 0V, TA = +25°C, unless otherwise specified. DESCRIPTION CONDITIONS MIN TYP MAX UNIT AC PERFORMANCE BW THD SR -3dB Bandwidth Total Harmonic Distortion, Differential Slew Rate, Single-ended RF = 499Ω, AV = +5 300 MHz RF = 750Ω, AV = +5 250 MHz RF = 750Ω, AV = +10 200 MHz f = 4MHz, VO = 4VP-P_DIFF, RL-DIFF = 100Ω -75 dBc f = 10MHz, VO = 4VP-P_DIFF, RL-DIFF = 100Ω -82 dBc f = 17MHz, VO = 4VP-P_DIFF, RL-DIFF = 100Ω -79 dBc 1200 V/µs VOUT from -3V to +3V 750 DC PERFORMANCE VOS_CM Offset Voltage Common Mode -40 +40 mV VOS_DM Offset Voltage Differential Mode -7.5 +7.5 mV ROL Differential Transimpedance VOUT = 12VP-P differential, unloaded 3.0 MΩ INPUT CHARACTERISTICS IB+ Non-Inverting Input Bias Current -7.0 IB- DM Inverting Input Bias Current Differential Mode -75 eN Input Noise Voltage f = 10kHz 8.2 nV Hz iN Input Noise Current f = 10kHz 25 pA/ Hz 3 +7.0 µA +75 µA OUTPUT CHARACTERISTICS VOUT IOUT Loaded Output Swing (Single- ended) Output Current VS = ±6V, RL-DIFF = 50Ω ±4.85 ±5.0 V VS = ±6V, RL-DIFF = 20Ω ±4.4 ±4.7 V 1000 mA RL = 0Ω SUPPLY VS Supply Voltage Single supply 4.5 IS+ (Full Bias) Positive Supply Current per Amplifier All outputs at 0V, C0 = C1 = 0V 12 IS+ (Medium Bias) Positive Supply Current per Amplifier All outputs at 0V, C0 = 5V, C1 = 0V 11 mA IS+ (Low Bias) Positive Supply Current per Amplifier All outputs at 0V, C0 = 0V, C1 = 5V 6.0 mA IS+ (Power down) Positive Supply Current per Amplifier All outputs at 0V, C0 = C1 = 5V IINH, C0 or C1 C0, C1 Input Current, High C0, C1 = 6V IINL, C0 or C1 C0, C1 Input Current, Low C0, C1 = 0V VINH, C0 or C1 C0, C1 Input Voltage, High VINL, C0 or C1 C0, C1 Input Voltage, Low FN6568 Rev 3.00 Mar 2, 2018 100 -5 15 13.2 V 21.5 mA 0.6 1.0 mA 175 250 µA +5 µA 2.0 V 0.8 V Page 4 of 12 ISL1557A Typical Performance Curves VS = ±6V RF = 500Ω AV = 5 VS = ±6V AV = 5 RF = 750Ω RF = 750Ω RF = 1kΩ RF = 1kΩ FIGURE 1. DIFFERENTIAL FREQUENCY RESPONSE WITH VARIOUS RF (FULL BIAS MODE) VS = ±6V AV = 5 RF = 500Ω RF = 500Ω FIGURE 2. DIFFERENTIAL FREQUENCY RESPONSE WITH VARIOUS RF (MEDIUM BIAS MODE) VS = ±6V RF = 500Ω AV = 10 RF = 750Ω RF = 750Ω RF = 1kΩ RF = 1kΩ FIGURE 3. DIFFERENTIAL FREQUENCY RESPONSE WITH VARIOUS RF (LOW BIAS MODE) VS = ±6V AV = 10 RF = 500Ω RF = 750Ω RF = 1kΩ FIGURE 5. DIFFERENTIAL FREQUENCY RESPONSE WITH VARIOUS RF (MEDIUM BIAS MODE) FN6568 Rev 3.00 Mar 2, 2018 FIGURE 4. DIFFERENTIAL FREQUENCY RESPONSE WITH VARIOUS RF (FULL BIAS MODE) VS = ±6V AV = 10 RF = 500Ω RF = 750Ω RF = 1kΩ FIGURE 6. DIFFERENTIAL FREQUENCY RESPONSE WITH VARIOUS RF (LOW BIAS MODE) Page 5 of 12 ISL1557A VS = ±6V 2ND HD AV = 5 3RD HD (Continued) HARMONIC DISTORTION (dBc) c) HARMONIC DISTORTION (dBc) c) Typical Performance Curves VS = ±6V 2ND HD AV = 5 3RD HD DIFFERENTIAL VOLTAGE OUTPUTP-P VS = ±6V AV = 5 FIGURE 8. 2ND AND 3RD HARMONIC DISTORTION vs RLOAD at 2MHz HARMONIC DISTORTION (dBc) c) HARMONIC DISTORTION (dBc) c) FIGURE 7. HARMONIC DISTORTION at 2MHz 2ND HD 3RD HD 2ND HD VS = ±6V AV = 5 3RD HD DIFFERENTIAL VOLTAGE OUTPUTP-P 2ND HD VS = ±6V 3RD HD AV = 5 FIGURE 10. 2ND AND 3RD HARMONIC DISTORTION vs RLOAD at 3MHz HARMONIC DISTORTION (dBc) c) HARMONIC DISTORTION (dBc) c) FIGURE 9. HARMONIC DISTORTION at 3MHz VS = ±6V AV = 5 2ND HD 3RD HD DIFFERENTIAL VOLTAGE OUTPUTP-P FIGURE 11. HARMONIC DISTORTION at 5MHz FN6568 Rev 3.00 Mar 2, 2018 FIGURE 12. 2ND AND 3RD HARMONIC DISTORTION vs RLOAD at 5MHz Page 6 of 12 ISL1557A (Continued) VS = ±6V AV = 5 2ND HD 3RD HD c) HARMONIC DISTORTION (dBc) HARMONIC DISTORTION (dBc) c) Typical Performance Curves VS = ±6V AV = 5 2ND HD 3RD HD DIFFERENTIAL VOLTAGE OUTPUTP-P HARMONIC DISTORTION (dBc) c) FIGURE 13. HARMONIC DISTORTION at 10MHz FIGURE 14. 2ND AND 3RD HARMONIC DISTORTION vs RLOAD at 10MHz VS = ±6V AV = 5 IS+ 2ND HD FULL BIAS MEDIUM BIAS 3RD HD LOW BIAS DIFFERENTIAL VOLTAGE OUTPUTP-P FIGURE 15. HARMONIC DISTORTION at 17MHz VS = ±6V AV = 5 CL = 22pF CL = 12pF CL = 0pF FIGURE 17. FREQUENCY RESPONSE WITH VARIOUS CL (FULL BIAS MODE) FN6568 Rev 3.00 Mar 2, 2018 FIGURE 16. SUPPLY CURRENT vs SUPPLY VOLTAGE VS = ±6V CL = 22pF AV = 5 CL = 12pF CL = 0pF FIGURE 18. FREQUENCY RESPONSE vs VARIOUS CL (MEDIUM BIAS MODE) Page 7 of 12 ISL1557A Typical Performance Curves VS = ±6V (Continued) VS = ±6V CL = 22pF AV = 5 PSRR+ CL = 12pF CL = 0pF PSRR- FIGURE 19. FREQUENCY RESPONSE WITH VARIOUS CL (LOW BIAS MODE) VS = ±6V AV = 1 10 1 VO (V) OUTPUT IMPEDANCE () 100 FIGURE 20. PSRR vs FREQUENCY 0.1 0.01 10k 100k 1M 10M 100M FREQUENCY (Hz) FIGURE 22. OUTPUT VOLTAGE AND CURRENT LIMITATIONS FIGURE 21. OUTPUT IMPEDANCE vs FREQUENCY 4.5 6 5 RL = 100Ω 4 3 RL = 10Ω 2 1W INTERNAL POWER 1 RL = 25Ω 0 -1 RL = 51Ω -2 1W INTERNAL POWER SINGLE CHANNEL -3 -4 -5 -6 -1000 -800 -600 -400 -200 0 200 400 600 800 1000 IO (mA) JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD - EXPOSED DIEPAD SOLDERED TO PCB PER JESD51-5 POWER DISSIPATION (W) 4.0 3.5 3.0 2.40W 2.5 QFN16 JA = +52°C/W 2.0 2.02W 1.5 HMSOP10 JA = +62°C/W 1.0 0.5 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (°C) FIGURE 23. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE FN6568 Rev 3.00 Mar 2, 2018 Page 8 of 12 ISL1557A Applications Information Product Description The ISL1557A is a dual operational amplifier designed for line driving in DMT ADSL2+ and VDSL solutions. It is a dual current mode feedback amplifier with low distortion that draws a moderately low supply current. It is built using proprietary Renesas complimentary bipolar process and is offered in industry standard pinouts. Due to the current feedback architecture, the ISL1557A closed-loop 3dB bandwidth is dependent on the value of the feedback resistor. First, select the desired bandwidth by choosing the feedback resistor, RF, then set the gain by choosing the gain resistor, RG. The curves at the beginning of the “Typical Performance Curves” on page 5 show the effect of varying both RF and RG. The 3dB bandwidth is somewhat dependent on the power supply voltage. Power Supply Bypassing and Printed Circuit Board Layout As with any high frequency device, good printed circuit board layout is necessary for optimum performance. Ground plane construction is highly recommended. Lead lengths should be as short as possible (below 0.25”). The power supply pins must be well bypassed to reduce the risk of oscillation. A 4.7µF tantalum capacitor in parallel with a 0.1µF ceramic capacitor is adequate for each supply pin. During power-up, it is necessary to limit the slew rate of the rising power supply to within 1V/µs. If the power supply rising time is undetermined, a series 10Ω resistor on the power supply line can be used to ensure the proper power supply rise time. For good AC performance, parasitic capacitances should be kept to a minimum, especially at the inverting input. This implies keeping the ground plane away from this pin. Carbon resistors are acceptable, but avoid using wire-wound resistors because of their parasitic inductance. Similarly, capacitors should be low inductance for the best performance. Capacitance at the Inverting Input Due to the topology of the current feedback amplifier, stray capacitance at the inverting input will effect the AC and transient performance of the ISL1557A when operating in the noninverting configuration. In the inverting gain mode, added capacitance at the inverting input has little effect because this point is at a virtual ground and stray capacitance is therefore not detected by the amplifier. Feedback Resistor Values The ISL1557A has been designed and specified with RF = 750Ω for AV = +5. This value of feedback resistor yields extremely flat frequency response with 1dB peaking out to 250MHz. As with all current feedback amplifiers, wider bandwidth, at the expense of slight peaking, can be obtained by reducing the value of the feedback resistor. Inversely, larger values of feedback resistor will cause rolloff to occur at a lower frequency. See the curves in the “Typical Performance Curves” section starting on page 5, which show 3dB bandwidth and peaking vs frequency for various feedback resistors and various supply voltages. Bandwidth vs Temperature Although many amplifiers’ supply current and consequently 3dB bandwidth drop off at high temperatures, the ISL1557A is designed to have little supply current variations with temperature. An immediate benefit is that the 3dB bandwidth does not drop off drastically with temperature. Supply Voltage Range The ISL1557A is designed to operate with supply voltages from ±2.25V to ±6V nominal. Optimum bandwidth, slew rate, and video characteristics are obtained at higher supply voltages. Single Supply Operation If a single supply is desired, values from +4.5V to +12V nominal can be used as long as the input common mode range is not exceeded. When using a single supply, be sure to either: • DC bias the inputs at an appropriate common mode voltage and AC couple the signal, or: • Ensure the driving signal is within the common mode range of the ISL1557A. The ISL1557AIUEZ must be used in single supply applications. ADSL CPE Applications The ISL1557A is designed as a line driver for ADSL CPE modems. It is capable of outputting 450mA of output current with a typical supply voltage headroom of 1.3V. It can achieve -85dBc of distortion at low 7.1mA of supply current per amplifier. The average line power requirement for the ADSL CPE application is 14.5dBm (28mW) into a 100Ω line. The average line voltage is 1.67VRMS. The ADSL DMT peak to average ratio (crest factor) of 5.3 implies peak voltage of 7.5V into the line. Using a differential drive configuration and transformer coupling with standard back termination, a transformer ratio of 1:2 is selected. The circuit configuration is shown in Figure 24. + - 12.5 750 TX1 AFE 100 250 + - 1:2 12.5 750 FIGURE 24. CIRCUIT CONFIGURATION Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please visit our website to make sure you have the latest revision. DATE REVISION Mar 2, 2018 FN6568.3 FN6568 Rev 3.00 Mar 2, 2018 CHANGE -Added Related Literature section on page 1. -Added Notes 1, 2, and 3 on page 2. -Updated package outline drawing on page 10. -Removed About Intersil section and added Renesas disclaimer. Page 9 of 12 ISL1557A Package Outline Drawings For the most recent package outline drawing, see L16.4x4H. L16.4x4H 16 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 1/12 2.40 4X 1.95 4.00 12X 0.65 A B 13 6 PIN 1 INDEX AREA 6 PIN #1 INDEX AREA 16 1 4.00 12 2.40 9 (4X) 4 0.15 5 8 0.10 M C A B 16x 0.550±0.05 TOP VIEW BOTTOM VIEW 4 0.30 ±0.05 SEE DETAIL "X" 0.90±0.10 0.10 C C BASE PLANE SEATING PLANE ( 3 . 6 TYP ) SIDE VIEW ( (12x0.65) 2.40) (16x0.30) C 0 . 20 REF 5 (16x0.75) +0.03/-0.02 TYPICAL RECOMMENDED LAND PATTERN DETAIL "X" NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to ASME Y14.5m-1994. 3. Unless otherwise specified, tolerance : Decimal ± 0.05 4. Dimension applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 5. Tiebar shown (if present) is a non-functional feature. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature. FN6568 Rev 3.00 Mar 2, 2018 Page 10 of 12 ISL1557A HMSOP (Heat-Sink MSOP) Package Family E B 0.25 M C A B E1 MDP0050 HMSOP (HEAT-SINK MSOP) PACKAGE FAMILY MILLIMETERS 1 N D (N/2)+1 (N/2) PIN #1 I.D. A TOP VIEW E2 EXPOSED THERMAL PAD D1 BOTTOM VIEW SYMBOL HMSOP8 HMSOP10 TOLERANCE NOTES A 1.00 1.00 Max. - A1 0.075 0.075 +0.025/-0.050 - A2 0.86 0.86 ±0.09 - b 0.30 0.20 +0.07/-0.08 - c 0.15 0.15 ±0.05 - D 3.00 3.00 ±0.10 1, 3 D1 1.85 1.85 Reference - E 4.90 4.90 ±0.15 - E1 3.00 3.00 ±0.10 2, 3 E2 1.73 1.73 Reference - e 0.65 0.50 Basic - L 0.55 0.55 ±0.15 - L1 0.95 0.95 Basic - N 8 10 Reference Rev. 1 2/07 e NOTES: H 1. Plastic or metal protrusions of 0.15mm maximum per side are not included. C SEATING PLANE 2. Plastic interlead protrusions of 0.25mm maximum per side are not included. 0.08 M C A B b 0.10 C N LEADS 3. Dimensions “D” and “E1” are measured at Datum Plane “H”. 4. Dimensioning and tolerancing per ASME Y14.5M-1994. SIDE VIEW L1 A For the most recent package outline drawing, see MDP0050. c END VIEW SEE DETAIL "X" A2 GAUGE 0.25 PLANE L 3° ±3° FN6568 Rev 3.00 Mar 2, 2018 A1 DETAIL X Page 11 of 12 Notice 1. Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of semiconductor products and application examples. You are fully responsible for the incorporation or any other use of the circuits, software, and information in the design of your product or system. Renesas Electronics disclaims any and all liability for any losses and damages incurred by you or third parties arising from the use of these circuits, software, or information. 2. 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