THS6212 - High Speed, Differential Line Driver Amplifier

The THS6212 is a differential line-driver amplifier with a current-feedbackarchitecture. The device is targeted for use in broadband, wideband power line communications (PLC)line driver applications and is fast enough to support transmissions of 14.5-dBm line power up to30 MHz.

The unique architecture of the THS6212 uses minimal quiescent current and still achievesvery high linearity. Differential distortion under full bias conditions is –93 dBc at 1 MHz andreduces to only –73 dBc at 10 MHz. Fixed multiple bias settings of the amplifiers allow forenhanced power savings for line lengths where the full performance of the amplifier is notrequired. To allow for even more flexibility and power savings, an adjustable current pin (IADJ) isavailable to further lower the bias currents.

The wide output swing of 43.2 V_PP (100-Ω differential load) with±12-V power supplies, coupled with over a 416-mA current drive (25-Ω load), allows for wide dynamicheadroom that keeps distortion minimal.

The THS6212 is available in a 24-pin VQFN package and a 17 bond pad wafer salepackage.

• Low Power Consumption:
  • Full-Bias Mode: 23 mA
  • Mid-Bias Mode: 17.7 mA
  • Low-Bias Mode: 12.2 mA
  • Low-Power Shutdown Mode
  • IADJ Pin for Variable Bias
• Low Noise:
  • Voltage Noise: 2.7 nV/√Hz
  • Inverting Current Noise: 17 pA/√Hz
  • Noninverting Current Noise: 1.2 pA/√Hz
• Low Distortion:
  • –100-dBc HD2 (1-MHz,100-Ω
    Differential Load)
  • –89-dBc HD3 (1-MHz, 100-Ω Differential Load)
• High Output Current: > 416 mA (25-Ω Load)
• Wide Output Swing:
  43.2 V_PP (±12-V, 100-Ω Differential Load)
• Wide Bandwidth: 150 MHz (G_DIFF = 10 V/V)
• PSRR: 50 dB at 1 MHz for Good Isolation
• Wide Power-Supply Range: 10 V to 28 V

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