LT6301 Dual 500mA, Differential xDSL Line Driver in 28-Lead TSSOP Package UFEATURESDESCRIPTIO ■ Drives Two Lines from One Package The LT®6301 is a 500mA minimum output current, quad ■ 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- ■ Power Enhanced 28-Lead TSSOP Package pensated for lower gains. The extended output swing al- ■ Power Saving Adjustable Supply Current lows for lower supply rails to reduce system power. Supply ■ ± 500mA Minimum IOUT current is set with an external resistor to optimize power ■ ±11.1V Output Swing, VS = ±12V, RL = 100Ω dissipation. The LT6301 features balanced, high imped- ■ ±10.9V Output Swing, VS = ±12V, IL = 250mA ance inputs with low input bias current and input offset ■ Low Distortion: – 82dBc at 1MHz, 2VP-P Into 50Ω voltage. Active termination is easily implemented for fur- ■ 200MHz Gain Bandwidth ther system power reduction. Short-circuit protection and ■ 600V/µs Slew Rate thermal shutdown ensure the device’s ruggedness. ■ Specified at ±12V and ±5V The outputs drive a 100Ω 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 ■ High Density ADSL Central Office Line Drivers changes. ■ High Efficiency ADSL, HDSL2, SHDSL Line Drivers ■ Buffers The LT6301 is available in the very small, thermally ■ Test Equipment Amplifiers enhanced, 28-lead TSSOP package for maximum port ■ Cable Drivers density in line driver applications. , LTC and LT are registered trademarks of Linear Technology Corporation. UTYPICAL APPLICATIOHigh Efficiency ± 12V Supply ADSL Line Driver 12V 24.9k +IN + SHDN 1/4 12.7Ω LT6301 TWO COMPLETE ADSL LINE DRIVERS – PROVIDED WITH ONE LT6301 PACKAGE 1k 1:2* 110Ω • • 100Ω 1000pF 110Ω 1k – *COILCRAFT X8390-A OR EQUIVALENT ISUPPLY = 10mA PER AMPLIFIER 1/4 12.7Ω WITH RSHDN = 24.9k LT6301 SHDNREF –IN + 6301 TA01 –12V sn6301 6301f 1
