TBLNA-110M-HZ DC-coupled Impedance Converter

The TBLNA-110M-HZ is a DC-coupled Impedance Converter from 1 MΩ to 50 Ohm with a flat response in the frequency range from DC to 110MHz and a 3 dB bandwidth from DC to 500 MHz. One of the impedance converter’s two separate outputs has a gain of 0 dB, while the other has a gain of 20 dB. When the TBLNA110M-HZ is used with a 1:10 oscilloscope probe, this corresponds to a gain of -20 dB or 0 dB.

In-circuit measurements in 50 Ohm systems, using standard oscilloscope probes.

High impedance frontend for spectrum analyzers and other RF-equipment with 50 Ohm inputs.

General specification

• Flat frequency range: DC – 110 MHz, typ.
• 3 dB frequency range: DC – 500 MHz, typ.
• Usable frequency range: DC – 1 GHz
• Gain: 0 dB, 20 dB
• RF-connectors: BNC-female

Input specification

• Input impedance: 1 MΩ // 20 pF
• Input Noise Voltage: >2 MHz: typ. <10 nV/√Hz; for details see chapter 3.3
• Maximum input level for linear output:
  • 150 mVpp for output saturation at the 20 dB gain output, 1:1
  • 1.5 Vpp for output saturation at the 20 dB gain output, 1:10
  • 1.5Vpp for output saturation at the 0 dB gain output, 1:1
  • 15Vpp for output saturation at the 0 dB gain output, 1:10
• Maximum ratings: 50Vpp AC

Output specification

• Output impedance: 50 Ω, detailed plots in chapter 3.2
• Output return loss: > 25 dB, detailed plots in chapter 3.2
• P1dBout :
  • +8.6 dBm ( 1.7 Vpp ),20 dB gain output
  • +8.6 dBm ( ≙ 1.7 Vpp ), 0 dB gain output
• IP3out :
  • +19 dBm, 20 dB gain output
  • +19 dBm, 0 dB gain output
• DC offset: < 10mV output offset

Supply specification

• Power-connector: Coaxial power socket; 2 mm / 5.5 mm; positive center conductor
• Indicator LEDs: Power ON, Power Good
• Operating voltage: 12 V; external power supply 100 V – 240 V, 50/60 Hz
• Current consumption: 275 mA
• Operating temperature range: -20°C to +50°C
• Dimensions: W 135 mm x H 40 mm x L 110 mm;
• Weight: 350 g