LT1229/LT1230 Dual and Quad 100MHz Current Feedback Amplifiers FEATURES DESCRIPTIO n 100MHz Bandwidth The LT 1229/LT1230 dual and quad 100MHz current n 1000V/m s Slew Rate feedback amplifiers are designed for maximum perfor- n Low Cost mance in small packages. Using industry standard pinouts, n 30mA Output Drive Current the dual is available in the 8-pin miniDIP and the 8-pin SO n 0.04% Differential Gain package while the quad is in the 14-pin DIP and 14-pin SO. n 0.1 Differential Phase The amplifiers are designed to operate on almost any n High Input Impedance: 25MW , 3pF available supply voltage from 4V ( 2V) to 30V ( 15V). n Wide Supply Range: 2V to 15V These current feedback amplifiers have very high input n Low Supply Current: 6mA Per Amplifier impedance and make excellent buffer amplifiers. They n Inputs Common Mode to Within 1.5V of Supplies maintain their wide bandwidth for almost all closed-loop n Outputs Swing Within 0.8V of Supplies voltage gains. The amplifiers drive over 30mA of output U current and are optimized to drive low impedance loads, APPLICATIO S such as cables, with excellent linearity at high frequencies. n Video Instrumentation Amplifiers The LT1229/LT1230 are manufactured on Linear n Cable Drivers Technologys proprietary complementary bipolar process. n RGB Amplifiers For a single amplifier like these see the LT1227 and for n Test Equipment Amplifiers better DC accuracy see the LT1223. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO Loop Through Amplifier Frequency Video Loop Through Amplifier Response 10 R R R R G2 G1 F1 F2 3.01k 750W 187W 750W 0 NORMAL SIGNAL 10 20 1/2 1/2 V OUT V + V LT1229 LT1229 3.01k 3.01k IN IN 30 + + 40 1% RESISTORS COMMON MODE SIGNAL WORST CASE CMRR = 22dB 12.1k 12.1k TYPICALLY = 38dB 50 V = G (V + V ) 60 OUT IN IN 10 100 1k 10k 100k 1M 10M 100M R = R F1 F2 BNC INPUTS R = (G 1) R FREQUENCY (Hz) G1 F2 LT1229 TA02 R HIGH INPUT RESISTANCE DOES NOT LOAD CABLE EVEN F2 R = G2 WHEN POWER IS OFF G 1 TRIM CMRR WITH R G1 LT1229 TA01 1 GAIN (dB) U ULT1229/LT1230 ABSOLUTEXAI U RATI GS (Note 1) Supply Voltage ...................................................... 18V Storage Temperature Range ..................65 C to 150 C Input Current ...................................................... 15mA Junction Temperature Output Short Circuit Duration (Note 2) .........Continuous Plastic Package .............................................. 150 C Operating Temperature Range Ceramic Package (OBSOLETE) ................ 175 C LT1229C, LT1230C ............................... 0 C to 70 C Lead Temperature (Soldering, 10 sec.)................. 300 C LT1229M, LT1230M (OBSOLETE).. 55 C to 125 C PACKAGE/ORDER I FOR ATIO TOP VIEW ORDER PART ORDER PART OUT A 1 14 OUT D NUMBER NUMBER TOP VIEW 13 IN D IN A 2 + D A LT1230CN OUT A 1 8 V LT1229CN8 +IN A 3 12 +IN D LT1230CS IN A 2 7 OUT B + LT1229CS8 V 4 11 V A 6 +IN A 3 IN B +IN B 5 10 +IN C B B C +IN B V 4 5 S8 PART MARKING IN B 6 9 IN C N8 PACKAGE S8 PACKAGE OUT B 7 8 OUT C 1229 8-LEAD PLASTIC DIP 8-LEAD PLASTIC SOIC T = 150 C, q = 100 C/W (N8) J MAX JA N PACKAGE S PACKAGE T = 150 C, q = 150 C/W (S8) J MAX JA 14-LEAD PLASTIC DIP 14-LEAD PLASTIC SOIC T = 150 C, q = 70 C/W (N) J MAX JA T = 150 C, q = 110 C/W (S) J MAX JA J8 PACKAGE J PACKAGE ORDER PART ORDER PART 8-LEAD CERAMIC DIP 14-LEAD CERAMIC DIP T = 175 C, q = 100 C/W (J8) NUMBER T = 175 C, q = 80 C/W (J) NUMBER J MAX JA J MAX JA LT1229MJ8 LT1230MJ LT1229CJ8 LT1230CJ OBSOLETE PACKAGE OBSOLETE PACKAGE Consider the N Package for Alternate Source Consider the N Package for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. 2 U WU U W W W