THS3112

THS3112 THS3115 SLOS385 – SEPTEMBER 2001 LOW-NOISE, HIGH-SPEED CURRENT FEEDBACK AMPLIFIERS FEATURES D Low Noise APPLICATIONS D Communication Equipment D Video Distribution D Motor Drivers D Piezo Drivers DESCRIPTION The THS3112/5 are low-noise, high-speed current feedback amplifiers, ideal for any application requiring high output current. The low noninverting current noise of 2.9 pA/√Hz and the low inverting current noise of 10.8 pA/√Hz increase signal to noise ratios for enhanced signal resolution. The THS3112/5 can operate from ±5-V to ±15-V supply voltages, while drawing as little as 4.5 mA of supply current per channel. It offers low –78-dBc total harmonic distortion driving 2 VPP into a 100-Ω load. The THS3115 features a low power shutdown mode, consuming only 300-µA shutdown quiescent current per channel. The THS3112/5 is packaged in a standard SOIC, SOIC PowerPAD, and TSSOP PowerPAD packages. D D D D D D D D D – 2.9 pA/√Hz Noninverting Current Noise – 10.8 pA/√Hz Inverting Current Noise – 2.2 nV/√Hz Voltage Noise Wide Supply Voltage Range ± 5 V to ± 15 V Wide Output Swing – 25 VPP Output Voltage, RL = 100 Ω, ± 15-V Supply High Output Current, 150 mA (Min) High Speed – 110 MHz (–3 dB, G=1, ± 15 V) – 1550 V/µs Slew Rate (G = 2, ± 15 V) Low Distortion, G = 2 – -78 dBc (1 MHz, 2 VPP, 100-Ω load) Low Power Shutdown (THS3115) – 300-µA Shutdown Quiescent Current Per Channel Thermal Shutdown and Short Circuit Protection Standard SOIC, SOIC PowerPAD, and TSSOP PowerPAD ...