LT6301 Dual 500mA, Differential xDSL Line Driver in 28-Lead TSSOP Package FEATURES DESCRIPTIO n Drives Two Lines from One Package The LT 6301 is a 500mA minimum output current, quad n Exceeds All Requirements For Full Rate, op amp with outstanding distortion performance. The Downstream ADSL Line Drivers amplifiers are gain-of-ten stable, but can be easily com- n Power Enhanced 28-Lead TSSOP Package pensated for lower gains. The extended output swing al- n Power Saving Adjustable Supply Current lows for lower supply rails to reduce system power. Supply n 500mA Minimum I current is set with an external resistor to optimize power OUT n 11.1V Output Swing, V = 12V, R = 100W dissipation. The LT6301 features balanced, high imped- S L n 10.9V Output Swing, V = 12V, I = 250mA ance inputs with low input bias current and input offset S L n Low Distortion: 82dBc at 1MHz, 2V Into 50W voltage. Active termination is easily implemented for fur- P-P n 200MHz Gain Bandwidth ther system power reduction. Short-circuit protection and n 600V/m s Slew Rate thermal shutdown ensure the devices ruggedness. n Specified at 12V and 5V The outputs drive a 100W load to 11.1V with 12V U supplies, and 10.9V with a 250mA load. The LT6301 is a APPLICATIO S functional replacement for the LT1739 and LT1794 in xDSL line driver applications and requires no circuit n High Density ADSL Central Office Line Drivers changes. n High Efficiency ADSL, HDSL2, SHDSL Line Drivers n Buffers The LT6301 is available in the very small, thermally n Test Equipment Amplifiers enhanced, 28-lead TSSOP package for maximum port n Cable Drivers density in line driver applications. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO High Efficiency 12V Supply ADSL Line Driver 12V 24.9k +IN + SHDN 12.7 1/4 TWO COMPLETE ADSL LINE DRIVERS LT6301 PROVIDED WITH ONE LT6301 PACKAGE 1k 1:2* 110 100 1000pF 110 1k *COILCRAFT X8390-A OR EQUIVALENT I = 10mA PER AMPLIFIER SUPPLY 12.7 1/4 WITH R = 24.9k SHDN LT6301 SHDNREF IN + 6301 TA01 12V sn6301 6301f 1 U ULT6301 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1) + Supply Voltage (V to V ) ................................. 13.5V TOP VIEW ORDER PART NUMBER Input Current ..................................................... 10mA V 1 28 V Output Short-Circuit Duration (Note 2) ........... Indefinite IN A 2 27 V A LT6301CFE Operating Temperature Range ............... 40 C to 85 C +IN A 3 26 OUT A LT6301IFE + SHDN1 4 25 V Specified Temperature Range (Note 3) .. 40 C to 85 C + SHDNREF1 5 24 V Junction Temperature.......................................... 150 C +IN B 6 23 OUT B Storage Temperature Range ................. 65 C to 150 C B IN B 7 22 V Lead Temperature (Soldering, 10 sec).................. 300 C IN C 8 21 V C +IN C 9 20 OUT C + 10 19 V SHDN2 + 11 18 V SHDNREF2 12 17 OUT D +IN D D 13 16 V IN D 14 15 V V FE PACKAGE 28-LEAD PLASTIC TSSOP T = 150 C, q = 25 C/W (NOTE 4) JMAX JA UNDERSIDE METAL CONNECTED TO V Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full specified temperature range, otherwise specifications are at T = 25 C. A + V = 0V, pulse tested, 5V V 12V, V = 0V, R = 24.9k between V and SHDN unless otherwise noted. (Note 3) CM S SHDNREF BIAS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Input Offset Voltage 15.0 mV OS l 7.5 mV Input Offset Voltage Matching (Note 6) 0.3 5.0 mV l 7.5 mV Input Offset Voltage Drift l 10 m V/ C I Input Offset Current 100 500 nA OS l 800 nA I Input Bias Current 0.1 4 m A B l 6 m A Input Bias Current Matching (Note 6) 100 500 nA l 800 nA e Input Noise Voltage Density f = 10kHz 8 nV/ Hz n i Input Noise Current Density f = 10kHz 0.8 pA/ Hz n + R Input Resistance V = (V 2V) to (V + 2V) l 550 MW IN CM Differential 6.5 MW C Input Capacitance 3pF IN + + Input Voltage Range (Positive) (Note 5) l V 2 V 1 V Input Voltage Range (Negative) (Note 5) l V + 1 V + 2 V + CMRR Common Mode Rejection Ratio V = (V 2V) to (V + 2V) 74 83 dB CM l 66 dB sn6301 6301f 2 U W U U WWW