Datasheet LT6300 (Analog Devices)

LT6300 500mA, 200MHz xDSL Line Driver in 16-Lead SSOP Package
U FEATURES DESCRIPTIO
■
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- ■
Power Enhanced 16-Lead SSOP Package
fiers are gain-of-ten stable, but can be easily compensated ■
Power Saving Adjustable Supply Current
for lower gains. The extended output swing allows for ■ ±
500mA Minimum IOUT
lower supply rails to reduce system power. Supply current ■ ±10.9V Output Swing, VS = ±12V, RL = 100Ω is set with an external resistor to optimize power dissipa- ■ ±10.7V Output Swing, VS = ±12V, IL = 250mA tion. The LT6300 features balanced, high impedance in- ■ Low Distortion: – 82dBc at 1MHz, 2VP-P Into 50Ω puts with low input bias current and input offset voltage. ■ 200MHz Gain Bandwidth Active termination is easily implemented for further sys- ■ 600V/µs Slew Rate tem power reduction. Short-circuit protection and thermal ■ Specified at ±12V and ±5V shutdown insure the device’s ruggedness. The outputs drive a 100Ω 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 ■ High Efficiency ADSL, HDSL2, SHDSL Line Drivers xDSL line driver applications and requires no circuit ■ Buffers changes. ■ Test Equipment Amplifiers The LT6300 is available in the very small, thermally ■ 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.
U TYPICAL APPLICATIO High Efficiency
±
12V Supply ADSL Line Driver
12V 24.9k +IN + SHDN 1/2 12.7Ω LT6300 – 1k 1:2* 110Ω • • 100Ω 1000pF 110Ω 1k – *COILCRAFT X8390-A OR EQUIVALENT ISUPPLY = 10mA PER AMPLIFIER 1/2 12.7Ω WITH RSHDN = 24.9k LT6300 SHDNREF –IN + 6300 TA01 –12V 1