Evaluation Board Hardware; Power Supplies - Analog Devices EVAL-ADA4351-2 User Manual

User Guide

EVALUATION BOARD HARDWARE

The EVAL-ADA4351-2EBZ provides users with features that make
for easier evaluation and operation.
ponents of the EVAL-ADA4351-2EBZ and
designators and descriptions.
Figure 3. Designator Map of the EVAL-ADA4351-2EBZ
Table 1. Designator Lookup Table
Designator Description
J1 The inverting input terminal on the Channel A amplifier
J2 The noninverting input terminal on the Channel A amplifier
1
J3 The noninverting input terminal on the Channel B amplifier
J4 The inverting input terminal on the Channel B amplifier
J5 The Channel A amplifier output
J6 The Channel B amplifier output
J7 The SMA input used to set the SW SEL B value to digital 0 or 1
J8 The SMA input used to set the SW SEL A value to digital 0 or 1
P3 The analog power supplies, 3-pin connector (from left to right,
AVDD, AGND, and AVSS)
P4 The jumper used for manually setting the SW SEL B value to
digital 0 or 1
P5 The jumper used for manually setting the SW SEL A value to
digital 0 or 1
1
P6 The digital power supplies, 2-pin connector (from left to right,
DVDD and AGND)
TPx The test points (TP5 through TP7) that connect to the digital and
analog power supplies
1
Do not install a shunt connector in this header.
analog.com
Figure 3 shows the key com-
Table 1 details their
EVAL-ADA4351-2

POWER SUPPLIES

The ADA4351-2 uses two supplies: an analog supply that powers
up the PGTIA itself, thereby setting the rails, and a digital supply
that is used to power up the switches for both Channel A and
Channel B. The two supplies share a common ground plane.
2 details the supply ranges accepted by the device. Refer to the
ADA4351-2 data sheet for the absolute maximum ratings.
Table 2. Analog and Digital Supply Ranges for the EVAL-ADA4351-2EBZ
Supply Supply Range
Analog AVDD to AVSS = 2.7 V to 5.5 V
AVSS = −0.5 V to 0 V (GND)
Digital DVDD to DVSS = 1.62 V to 5.5 V
DVSS = 0 V (GND)
The EVAL-ADA4351-2EBZ provides two ways to power up the part:
through pin headers or through test points.
Powering Up Through Pin Headers
The EVAL-ADA4351-2EBZ provides a 3-pin header for analog sup-
plies and a 2-pin header for digital supplies. For proper connection,
see P3 for the analog supplies and P6 for the digital supplies as
shown and detailed in Figure 3
Powering up Through Test Points
Though the test points are intended for measuring the supply
voltages, the provided test points can also be used as a means to
access the supply planes. Refer to TPx in
and to Table 3 for their proper connections.
Table 3. Designated Test Points for Analog and Digital Supplies
Test Points
TP5
TP6
TP7
Not Applicable (Soldered to GND)
and Table 1.
Figure 3 for their location
Power Supply
AVDD (analog positive supply voltage)
AVSS (analog negative supply voltage)
DVDD (digital positive supply voltage)
DVSS (digital negative supply voltage)
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