THS7002 Datasheet | Texas Instruments

ąą D Separate Low Noise Preamp and PGA Stages D Shutdown Control D Preamp Features - Low Voltage Noise . . . 1.7 n V/√Hz - Accessible Output Pin for External Filtering - Voltage Feedback, Gmin = - 1, 2 - 100 MHz Bandwidth (- 3 d B) THS7001, THS7002 70ĆMHz PROGRAMMABLEĆGAIN AMPLIFIERS ą SLOS214C - OCTOBER 1998 - REVISED MARCH 2007 D PGA Features - Digitally Programmable Gain - - 22 d B to 20 d B Gain/Attenuation Range - 6 d B Step Resolution - Output Clamp Protection - 70 MHz Bandwidth (- 3 d B) - 175 V/µs Slew Rate D Wide Supply Range ±4.5 V to ±16 V D Power PAD Package for Enhanced Thermal Performance description The THS7001 (single) and THS7002 (dual) are high-speed programmable-gain amplifiers, ideal for applications where load impedance can often vary. Each channel on this device consists of a separate low-noise input preamp and a programmable gain amplifier (PGA). The preamp is a voltage-feedback amplifier offering a low 1.7-n V/√Hz voltage noise with a 100-MHz (- 3 d B) bandwidth. The output pin of the preamp is accessible so that filters can be easily added to the amplifier. The 3-bit digitally-controlled PGA provides a - 22-d B to 20-d B attenuation/gain range with a 6-d B step resolution. In addition, the PGA provides both high and low output clamp protection to prevent the output signal from swinging outside the mon-mode input range of an analog-to-digital converter. The PGA provides a wide 70-MHz (- 3 d B) bandwidth, which remains relatively constant over the entire gain/attenuation range. Independent shutdown control is also provided for power conservation and multiplexing. These devices operate over a wide ±4.5-V to ±16-V supply voltage range. PREAMP OUT PGA IN- G0 G1 G2 PREAMP...