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Texas Instruments THS7530/THS7530-Q1 Variable Gain Amplifier

Texas Instruments THS7530/THS7530-Q1 Variable Gain Amplifier is fabricated using TI's state-of-the-art BiCom III SiGe complementary bipolar process. The THS7530/THS7530-Q1 is a DC-coupled, wide bandwidth amplifier with voltage-controlled gain. The amplifier has high impedance differential inputs and low impedance differential outputs with high-bandwidth gain control, output common-mode control, and output voltage clamping. Signal-channel performance is exceptional with 300MHz bandwidth, and third harmonic distortion of -61dBc at 32MHz with 1VPP output into 400Ω. Gain control is linear in dB with 0V to 0.9V, varying the gain from 11.6dB to 46.5dB with 38.8dB/V gain slope. Output voltage limiting is provided to limit the output voltage swing and to prevent saturating the following stages. The THS7530-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • Vn = 1.1nV/√Hz, noise figure = 9dB low noise
  • Low distortion
    • HD2 = –65dBc, HD3 = –61dBc at 32MHz
    • IMD3 = –62dBc, OIP3 = 21dBm at 70MHz
  • 300MHz Bandwidth
  • Continuously variable gain range of 11.6dB to 46.5dB
  • 38.8dB/V Gain slope
  • Fully differential input and output
  • Output common-mode voltage control
  • Output voltage limiting

Applications

  • Time gain amplifiers in ultrasound, sonar, and radar
  • Automatic gain control in communication and video
  • System gain calibration in communications

Datasheets

Functional Block Diagram

Block Diagram - Texas Instruments THS7530/THS7530-Q1 Variable Gain Amplifier
Publicado: 2016-04-26 | Actualizado: 2025-08-01