LT1886 Dual 700MHz, 200mA Operational Amplifier DESCRIPTIO FEATURES n 700MHz Gain Bandwidth The LT 1886 is a 200mA minimum output current dual op n 200mA Minimum I amp with outstanding distortion performance. The ampli- OUT n Low Distortion: 72dBc at 1MHz, 4V , 25W , A = 2 fiers are gain-of-ten stable, but can be easily compensated P-P V n Stable in A 10, Simple Compensation for A < 10 for lower gains. The LT1886 features balanced, high V V n 4.3V Minimum Output Swing, V = 6V, R = 25W impedance inputs with 4m A maximum input bias current, S L n 7mA Supply Current per Amplifier and 4mV maximum input offset voltage. Single supply n 200V/m s Slew Rate applications are easy to implement and have lower total n Stable with 1000pF Load noise than current feedback amplifier implementations. n 6nV/ Hz Input Noise Voltage The output drives a 25W load to 4.3V with 6V supplies. n 2pA/ Hz Input Noise Current On 2.5V supplies the output swings 1.5V with a 100W n 4mV Maximum Input Offset Voltage load. The amplifier is stable with a 1000pF capacitive n 4m A Maximum Input Bias Current load which makes it useful in buffer and cable driver n 400nA Maximum Input Offset Current applications. n 4.5V Minimum Input CMR, V = 6V S n The LT1886 is manufactured on Linear Technologys Specified at 6V, 2.5V advanced low voltage complementary bipolar process and U is available in a thermally enhanced SO-8 package. APPLICATIO S n DSL Modems n xDSL PCI Cards n USB Modems n , LTC and LT are registered trademarks of Linear Technology Corporation. Line Drivers TYPICAL APPLICATIO Single 12V Supply ADSL Modem Line Driver 12V 0.1F ADSL Modem Line Driver Distortion + IN + 60 12.4 V = 12V S 1/2 LT1886 A = 10 V f = 200kHz 100 LINE 70 909 1:2 TRANSFORMER 10k 20k 1:2* 100 HD2 80 100 1F 10k 20k 1F 100 909 90 HD3 *COILCRAFT X8390-A OR EQUIVALENT 12.4 100 1886 TA01 0.1F 1/2 LT1886 0 2 4 6 8 10 12 14 16 + LINE VOLTAGE (V ) P-P IN 1886 TA01a 1 HARMONIC DISTORTION (dBc) U ULT1886 UUW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) + Total Supply Voltage (V to V ) ........................... 13.2V ORDER PART TOP VIEW NUMBER Input Current (Note 2) ....................................... 10mA + OUT A 1 8 V Input Voltage (Note 2) ............................................ V S IN A 2 7 OUT B LT1886CS8 A Maximum Continuous Output Current (Note 3) +IN A 3 6 IN B B DC ............................................................... 100mA V +IN B 4 5 S8 PART MARKING AC ............................................................... 300mA S8 PACKAGE Operating Temperature Range (Note 10) 40 C to 85 C 8-LEAD PLASTIC SO 1886 Specified Temperature Range (Note 9) .. 40 C to 85 C T = 150 C, q = 80 C/W (Note 4) JMAX JA Maximum Junction Temperature ......................... 150 C Consult factory for parts specified with wider operating temperature ranges. Storage Temperature Range ................ 65 C to 150 C Lead Temperature (Soldering, 10 sec)................. 300 C ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full operating temp- erature range, otherwise specifications are at T = 25 C. V = 6V, V = 0V, pulse power tested unless otherwise noted. (Note 9) A S CM SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Input Offset Voltage (Note 5) 1 4 mV OS l 5mV Input Offset Voltage Drift (Note 8) l 317 m V/ C I Input Offset Current 150 400 nA OS l 600 nA I Input Bias Current 1.5 4 m A B l 6 m A e Input Noise Voltage f = 10kHz 6 nV/ Hz n i Input Noise Current f = 10kHz 2 pA/ Hz n R Input Resistance V = 4.5V 5 10 MW IN CM Differential 35 kW C Input Capacitance 2pF IN Input Voltage Range (Positive) l 4.5 5.9 V Input Voltage Range (Negative) l 5.2 4.5 V CMRR Common Mode Rejection Ratio V = 4.5V l 77 98 dB CM Minimum Supply Voltage Guaranteed by PSRR l 2V PSRR Power Supply Rejection Ratio V = 2V to 6.5V 80 86 dB S l 78 dB A Large-Signal Voltage Gain V = 4V, R = 100W 5.0 12 V/mV VOL OUT L l 4.5 V/mV V = 4V, R = 25W 4.5 12 V/mV OUT L l 4.0 V/mV V Output Swing R = 100W , 10mV Overdrive 4.85 5 V OUT L l 4.70 V R = 25W , 10mV Overdrive 4.30 4.6 V L l 4.10 V I = 200mA, 10mV Overdrive 4.30 4.5 V OUT l 4.10 V I Short-Circuit Current (Sourcing) (Note 3) 800 mA SC Short-Circuit Current (Sinking) 500 mA 2 U WWW