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LT1229CS8 Datasheet(PDF) 1 Page - Linear Technology |
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LT1229CS8 Datasheet(HTML) 1 Page - Linear Technology |
1 / 12 page 1 LT1229/LT1230 Dual and Quad 100MHz Current Feedback Amplifiers DESCRIPTIO S FEATURE The LT1229/LT1230 dual and quad 100MHz current feed- back amplifiers are designed for maximum performance in small packages. Using industry standard pinouts, the dual is available in the 8-pin miniDIP and the 8-pin SO package while the quad is in the 14-pin DIP and 14-pin SO. The amplifiers are designed to operate on almost any available supply voltage from 4V ( ±2V) to 30V (±15V). These current feedback amplifiers have very high input impedance and make excellent buffer amplifiers. They maintain their wide bandwidth for almost all closed-loop voltage gains. The amplifiers drive over 30mA of output current and are optimized to drive low impedance loads, such as cables, with excellent linearity at high frequencies. The LT1229/LT1230 are manufactured on Linear Technology’s proprietary complementary bipolar process. For a single amplifier like these see the LT1227 and for better DC accuracy see the LT1223. s 100MHz Bandwidth s 1000V/ µs Slew Rate s Low Cost s 30mA Output Drive Current s 0.04% Differential Gain s 0.1 ° Differential Phase s High Input Impedance: 25M Ω, 3pF s Wide Supply Range: ±2V to ±15V s Low Supply Current: 6mA Per Amplifier s Inputs Common Mode to Within 1.5V of Supplies s Outputs Swing Within 0.8V of Supplies S APPLICATI s Video Instrumentation Amplifiers s Cable Drivers s RGB Amplifiers s Test Equipment Amplifiers APPLICATI TYPICAL – + VOUT LT1229 • TA01 12.1k RF2 750 Ω 1% RESISTORS WORST CASE CMRR = 22dB TYPICALLY = 38dB VOUT = G (VIN+ – VIN–) RF1 = RF2 RG1 = (G – 1) RF2 RG2 = TRIM CMRR WITH RG1 HIGH INPUT RESISTANCE DOES NOT LOAD CABLE EVEN WHEN POWER IS OFF 1/2 LT1229 RF2 G – 1 RG2 187 Ω RF1 750 Ω RG1 3.01k – + 1/2 LT1229 3.01k 3.01k 12.1k VIN– VIN+ BNC INPUTS Video Loop Through Amplifier Loop Through Amplifier Frequency Response FREQUENCY (Hz) 10 –60 –50 –40 –30 –20 –10 10 100 1k 10k 100M LT1229 • TA02 100k 1M 10M 0 COMMON-MODE SIGNAL NORMAL SIGNAL |
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