LT6300 500mA, 200MHz xDSL Line Driver in 16-Lead SSOP Package FEATURES DESCRIPTIO n Exceeds All Requirements For Full Rate, The LT 6300 is a 500mA minimum output current, dual op Downstream ADSL Line Drivers amp with outstanding distortion performance. The ampli- n Power Enhanced 16-Lead SSOP Package fiers are gain-of-ten stable, but can be easily compensated n Power Saving Adjustable Supply Current for lower gains. The extended output swing allows for n 500mA Minimum I lower supply rails to reduce system power. Supply current OUT n 10.9V Output Swing, V = 12V, R = 100W is set with an external resistor to optimize power dissipa- S L n 10.7V Output Swing, V = 12V, I = 250mA tion. The LT6300 features balanced, high impedance in- S L n Low Distortion: 82dBc at 1MHz, 2V Into 50W puts with low input bias current and input offset voltage. P-P n 200MHz Gain Bandwidth Active termination is easily implemented for further sys- n 600V/m s Slew Rate tem power reduction. Short-circuit protection and thermal n Specified at 12V and 5V shutdown insure the devices ruggedness. The outputs drive a 100W load to 10.9V with 12V U supplies, and 10.7V with a 250mA load. The LT6300 is a APPLICATIO S functional replacement for the LT1739 and LT1794 in n High Efficiency ADSL, HDSL2, SHDSL Line Drivers xDSL line driver applications and requires no circuit n Buffers changes. n Test Equipment Amplifiers The LT6300 is available in the very small, thermally n Cable Drivers enhanced, 16-lead SSOP package (same PCB area as the SO-8 package) for maximum port 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 1/2 LT6300 1k 1:2* 110 100 1000pF 110 1k *COILCRAFT X8390-A OR EQUIVALENT I = 10mA PER AMPLIFIER SUPPLY 12.7 1/2 WITH R = 24.9k SHDN LT6300 SHDNREF IN + 6300 TA01 12V 1 U ULT6300 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1) + TOP VIEW Supply Voltage (V to V ) ................................. 13.5V ORDER PART NUMBER V 1 16 Input Current ..................................................... 10mA V IN 2 15 OUT Output Short-Circuit Duration (Note 2) ........... Indefinite LT6300CGN +IN 3 14 NC Operating Temperature Range ............... 40 C to 85 C LT6300IGN + SHDN 4 13 V Specified Temperature Range (Note 3) .. 40 C to 85 C + SHDNREF 5 12 V Junction Temperature.......................................... 150 C +IN 6 11 NC GN PART Storage Temperature Range ................. 65 C to 150 C IN 7 10 OUT MARKING Lead Temperature (Soldering, 10 sec).................. 300 C V 8 9 V 6300 GN PACKAGE 16-LEAD PLASTIC SSOP 6300I T = 150 C, q = 70 C/W to 95 C/W (Note 4) JMAX JA 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 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 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 PSRR Power Supply Rejection Ratio V = 4V to 12V 74 88 dB S l 66 dB 2 U W U U WWW