SNLU284 May   2020 LMH9135

 

  1.   1
  2.   2
    1.     3
    2.     4
  3.   5
    1.     6
    2.     7
    3.     8
    4.     9
  4.   10
    1.     11
    2.     12
    3.     13
    4.     14

1.2 General Usage Information

This section provides general usage information for the LMH9135 EVM. See Figure 1-1 for a general single-tone setup diagram as a reference point to the following instructions. Some components such as supply bypass capacitors, and power down reference voltage generation are omitted in Figure 1-1 for clarity.

  1. Recommended power-up sequence:
    1. Before connecting the power-supply cables to the EVM, set the DC output power supply to +3.3 V.
    2. Set the current limit of the DC output power supply at 200 mA.
    3. Making sure the supply is turned off, connect the power supply cables to the J1 connector.
    4. Now turn on the DC power supply of VCC = +3.3 V. The supply current (IQ) drawn from the power supply should be approximately 120 mA.
    5. If the supply current is low, ensure the device is not disabled by shorting the jumper connection for J5 between 2 and 3 header pins.
  2. Power-down option:
    1. Short terminals 1 and 2 on J5 to put the LMH9135 device in its Power-down state. The supply current (IQ) drawn should be < 15 mA.