TI THS4509RGTR

The THS4509 device is a wideband, fully-differential op amp designed for 5-V data_acquisition systems. It has a low noise at 1.9 nV/√Hz, and low harmonic distortion of -75 dBc HD₂ and -80 dBc HD₃ at 100 MHz with 2 Vₚₚ, G = 10 dB, and 1-kΩ load. Slew rate is high at 6600 V/μs, and with settling time of 2 ns to 1% (2-V step), it is ideal for pulsed applications. It is designed for a minimum gain of 6 dB, but is optimized for gains of 10 dB. To allow for DC coupling to analog-to-digital converters (ADCs), its unique output common-mode control circuit maintains the output common-mode voltage within 3·mV offset (typical) from the set voltage, when set within 0.5·V of midsupply, with less than 4-mV differential offset voltage. The commonmode set point is set to midsupply by internal circuitry, which may be overdriven from an external source.

• Fully-Differential Architecture
• Centered Input Common-Mode Range
• Output Common-Mode Control
• Minimum Gain of 2 V/V (6 dB)
• Bandwidth: 1900 MHz
• Slew Rate: 6600 V/μs
• 1% Settling Time: 2 ns
• HD₂ -75 dBc at 100 MHz
• HD₃: -80 dBc at 100 MHz
• OlP₃: 37 dBm at 70 MHz
• Input Voltage Noise: 1.9 nV/√Hz (f > 10 MHz)
• Power-Supply Voltage: 3 V to 5 V
• Power-Supply Current: 37.7 mA
• Power-Down Current: 0.65 mA

• 5-V Data Acquisition Systems
• High Linearity ADC Amplifiers
• Wireless Communication
• Medical Imaging
• Test and Measurement