- Configure the power supply output to
generate a voltage between ±6V to ±30V. A value such as ±25V is suggested to use for basic
evaluation.
- With the power supply output off, connect
the positive output to the EVM VCC input, the negative output to the EVM VEE input, and
the common ground point to the EVM GND input.
- Make sure the power control switch is set
to either the VDD or FLAG position.
- Turn on the power supply. The power
supply current reads approximately 30mA. The current value changes slightly depending on
the supply voltage.
- Provide either an AC or DC 10mV input
signal to the IN+ SMA connector on the EVM.
- Connect a multimeter to the OUT SMA
connector when using a DC input signal OR connect an oscilloscope to the OUT SMA connector
when using an AC input signal.
- The output voltage reads approximately
50mV.
- Increase or decrease the input voltage as
desired.
WARNING: If using a load that causes the part to output a
large amount of current, then increasing the input voltage can result in a significant
amount of device heating. When driving significant amounts of output current, have a
heat sink installed or the device can be damaged easily. TI recommends to always use a
heat sink to avoid accidental device damage.
Table 3-1 shows a list of simple DC input and output measurements for the standard EVM
configuration as shown in Figure 4-1.
Table 3-1 THS3470 EVM DC Input and Output
Measurements
| Input Voltage (V) |
Output Voltage (V) |
| –4 |
–20.0 |
| –2 |
–9.98 |
| –1 |
–4.99 |
| –0.5 |
–2.51 |
| –0.1 |
–0.51 |
| 0.1 |
0.48 |
| 0.5 |
2.48 |
| 1 |
4.96 |
| 2 |
9.95 |
| 4 |
19.9 |