Analog Devices ADMV7320 User Manual page 3

ADMV7320-EVALZ
EVAULATION BOARD QUICK START PROCEDURES
The ADMV7320-EVALZ is equipped with LDO regulators to
provide drains and gates biases. Only +5 V dc and −5 V dc
power supplies are required to power up the chip. Note that the
evaluation board is tuned to achieve a typical current level.
To ensure that damage does not occur, use the following
sequence to power up:
1. Place jumpers on all pins of the J3 connector.
2. Place jumpers on all pins of the J1 connector, except Pin 1
and Pin 2.
3. Connect the −5 V dc power supply to the N5V test point
and ground the supply to the nearest GND test point.
4. Connect the 5 V dc power supply to the P5V test point.
5. Turn on the −5 V dc supply and then turn on the +5 V dc
supply.
6. Place jumpers on Pin1 and Pin2 of the J1 connector.
7. Connect VCTRL to the −5 V dc supply for maximum gain.
8. Adjust the dc voltages between −0.2 V and +0.2 V for the
TXBB_IN, TXBB_IP, TXBB_QN, and TXBB_QP ports for
LO nulling.
POWER SUPPLY
POWER SUPPLY
User Guide
HIGH FEQUENCY
SPECTRUM ANALYZER
–5V dc
GND
+5V dc
GND
–5V dc
RF FREQUENCY GENERATOR
Figure 2. ADMV7320-EVALZ Lab Bench Setup
To power down the chip, use the following sequence:
1. Disconnect the −5 V dc supply on VCTRL.
2. Turn off the 5 V dc supply.
3. Turn off the −5 V dc supply.
RFOUT
WR-12 WAVEGUIDE
BASEBAND
INPUTS
Q+
Q–
I–
I+
LO INPUT
Rev. A | Page 3 of 8
UG-1597
DAC OR BASEBAND
GENERATOR