ADV3221-EVALZ/ADV3222-EVALZ User Guide
UG-844
Rev. 0 | Page 3 of 10
EVALUATION BOARD HARDWARE
INTRODUCTION
The
allows the user to easily evaluate the
both the 50 Ω and 75 Ω terminations. Figure 2 shows the typical
bench setup used to evaluate the 4:1 analog multiplexers.
POWER SUPPLY
This evaluation board requires a typical ±5 V power supply for
the analog circuitry and a minimum of 2 V single supply for the
digital circuitry. Connect the supplies as shown in Figure 2.
ANALOG INPUTS
Drive the inputs, IN0 to IN3, with a waveform generator for the
50 Ω terminated board or with a video pattern generator for the
75 Ω terminated board, or any signal source that can provide
an input voltage of ±3 V for the
ANALOG OUTPUT
The output, OUT, of this evaluation board produces a voltage of
±3 V only for both the
. The waveform
signal from this output can be checked using a signal analyzer
such as an oscilloscope or a display/monitor.
DIGITAL LOGIC INPUTS
The logic levels of CS, A0, A1, CK1, and CK2 determine which
input port to produce in the OUT pin. All of these logic inputs
require a minimum of 2 V to set in high mode and require a
maximum of 0.8 V to set in low mode. Table 1 shows the truth
table in setting the input.
QUICK START GUIDE
To get started, take the following steps:
1.
evaluation board from the box.
2.
C5 V to V_POS, connect −5 V to V_NEG, and
connect GND to GND1, GND2, or any GND.
3.
Connect a 2-pin jumper or shunt on Pin 1and Pin 2 of P2,
P4, P5, P6, and P7.
4.
Set A0, A1, CS, CK1, and CK2 to low by switching S1, S2,
S3, S4, and S5 near the S1 to S5 labels.
5.
Connect an input signals that is within the input voltage
range of the device through the BNC-to-SMA or BNC-to-
BNC connector between the signal generator or video
pattern generator and IN0, IN1, IN2, and IN3.
6.
Connect an oscilloscope or display/monitor to OUT
through the BNC-to-SMA or BNC-to-BNC connector.
OUT produces the signal in IN0.
7.
To produce other inputs in OUT, connect 2 V to the A0 and
A1 test points (between the SMA and the 3-pin headers).
The 2 V supply is used in setting A0 and A1 in high mode.
8.
To set IN1 as the input, switch S1 near the A0 label. To set
IN2 as the input, switch S1 near the S1 label and S2 near
the A1 label. To set IN3 as the input, switch both S1 and S2
near the A0 and A1 labels.
Table 1. Input Setting Truth Table
CS
A1
A0
CK1
CK2
Output
0
0
0
0
0
IN0
0
0
1
0
0
IN1
0
1
0
0
0
IN2
0
1
1
0
0
IN3
1
X
1
X
1
0
0
High-Z
1
X is don’t care.
