TOA Electronics THS4130 manual Testing the EVM Setup, ±3. Driver 1 Output Signal

Page 20

2.4Testing the EVM Setup

1)Turn on the dc power supply.

2)Verify that both the +5 V (current meter 1) and the ±5 V (current meter 2) currents are below 20 mA.

Caution:

Currents above 20 mA indicate a possible short or a wrong resistor value on the PCB. Do not proceed until this situation is corrected.

3)Turn on the function generator.

4)Verify the oscilloscope is showing two 1 MHz sine waves with amplitude of ±0.125 V. The dc offset of the signal must be below 50 mV.

Note: VOUT+ and VOUT± should be 180 degrees out of phase. The internal attenuation of the scope should be set to 6 dB for a gain of one. Otherwise,

the output will show a gain of one-halfdue to the voltage division occurring at the 50-Ω termination resistor.

Use Figure 3 as a reference for the input and output signals.

Figure 2±3. Driver 1 Output Signal

THS4130

C1

C2

C3

2-4

Using the THS4130 EVM

Page 19 Page 21
Image 20
Page 19 Page 21
Contents Users Guide Important Notice Preface Trademarks Contents Figures Introduction and Description Evaluation Module Features DescriptionTHS4130 EVM Specifications Schematic of the Populated Circuit Default ConfigurationTHS4130 EVM Schematic ±2. SchematicAdditional Sample Schematics ±5. Vicr Level Shifter THS4130 EVM Layout ±7. Top Layer Silkscreen±9. Internal Plane Layer 2 Ground Plane ±11. Bottom Layer 4 Ground and Signal Introduction and Description Using the THS4130 EVM Power Supply Setup Required EquipmentInput and Output Setup ±2. Signal ConnectionsTesting the EVM Setup ±3. Driver 1 Output SignalPower Down Verification Measuring the Frequency ResponseButterworth Filter Butterworth FilterTHS4130 EVM Bill of Materials ±1. THS4130 EVM Bill of MaterialsP374CTR±ND General High-Speed Amplifier Design Considerations General High-Speed Amplifier Design Considerations
Top Page Image Contents