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RF1602

DS121203

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.

Power Up/Power Down and Operational Controls for the RF1602

Scenario 1

Sequence for Power UP and Power DOWN from the phone battery or supply that is connected to RF1602

VBATT pin.

Power UP

Turn on VBATT (supply), then EN, then CTRL, then (20µS or greater), apply RF signal

Power DOWN

Turn off RF signal, then CTRL, then EN, turn off VBATT (supply)

Scenario 2

Sequence for going in and out of a shutdown mode, keeping the VBATT or supply on, but disabling/

enabling the RF1602 by the EN pin.

Power UP

Turn-on EN (enable), then CTRL, then (5µS or greater), turn-on RF signal

Power DOWN

Turn-off RF signal, then CTRL, then EN (disable)

Scenario 3

When changing switch positions between RF1 and RF2, no RF signal should be applied to any RF port

while the CTRL is changing states

Switching Ports

Turn-off RF signal, then change CTRL state, then (5µS or greater), turn-on RF signal