LT1217 Low Power 10MHz Current Feedback Amplifier UFEATUSREDESCRIPTIO ■ 1mA Quiescent Current The LT1217 is a 10MHz current feedback amplifier with DC ■ 50mA Output Current (Minimum) characteristics better than many voltage feedback ampli- ■ 10MHz Bandwidth fiers. This versatile amplifier is fast, 280ns settling to 0.1% ■ 500V/µs Slew Rate for a 10V step thanks to its 500V/µs slew rate. The LT1217 ■ 280ns Settling Time to 0.1% is manufactured on Linear Technology’s proprietary ■ Wide Supply Range, ±5V to ±15V complementary bipolar process resulting in a low 1mA ■ 1mV Input Offset Voltage quiescent current. To reduce power dissipation further, ■ 100nA Input Bias Current the LT1217 can be turned off, eliminating the load current ■ 100MΩ Input Resistance and dropping the supply current to 350µA. OU The LT1217 is excellent for driving cables and other low APPLICATIS impedance loads thanks to a minimum output drive cur- rent of 50mA. Operating on any supplies from ±5V to ±15V ■ allows the LT1217 to be used in almost any system. Like Video Amplifiers ■ other current feedback amplifiers, the LT1217 has high Buffers ■ gain bandwidth at high gains. The bandwidth is over 1MHz IF and RF Amplification ■ at a gain of 100. Cable Drivers ■ 8, 10, 12-Bit Data Acquisition Systems The LT1217 comes in the industry standard pinout and can upgrade the performance of many older products. OUTYPICAL APPLICATICable DriverVoltage Gain vs Frequency 60 V + IN 75Ω 50 VS = ±15V LT1217 R R G = 30Ω F = 3k 40 RL = 100Ω – RG = 100Ω 75Ω 30 RF CABLE RG = 330Ω 3k 20 RG = 1.3k V 10 OUT R R G = ∞ G 0 3k 75Ω AMPLIFIER VOLTAGE GAIN (dB) –10 –20 RF 100k 1M 10M 100M AV = 1 + RG FREQUENCY (Hz) AT AMPLIFIER OUTPUT. LT1217 • TA02 6dB LESS AT VOUT. LT1217 • TA01 1
