UG-1770
Rev. A | Page 4 of 16
EVALUATION BOARD HARDWARE
EVAL-AD7383FMCZ DESCRIPTION
The EVAL-AD7383FMCZ is an evaluation board for the
a 16-bit, dual, simultaneous sampling, high speed, low power,
SAR ADC with a pseudo differential input.
POWER SUPPLIES
Ensure that all link positions are set according to the required
operating mode before applying power and signals to the EVAL-
AD7383FMCZ. See Table 2 for the complete list of link options.
The EVAL-AD7383FMCZ is powered by the
by default.
External power supplies can be applied to the EVAL-
AD7383FMCZ. See Table 1 for a description of the optional
external power supply connectors and Table 2 for the required
link option function descriptions. The EVAL-AD7383FMCZ
has low dropout (LDO) linear regulators (the
) that supply power to the AD7383 and
its supporting circuitry, such as the
amplifiers and
reference circuit. An external 2.5 V power supply
can also be used with AD7383. The EVAL-AD7383FMCZ has a
footprint ready to place an
when an external 2.5 V
power supply is required for evaluation. A pseudo differential
signal can be connected on the Subminiature Version B (SMB)
connectors, J1 to J4.
Table 1. Optional External Power Supplies
Power Supply
Connector Voltage
Range
(V)
Description
12 V
P4-1
12 ± 10%
Main board power supply for all internal voltage regulators
GND P4-2
0
Ground
V
CC
P5-1
3.0 to 3.6
ADC analog power supply
GND P5-2
0
Ground
V
LOGIC
P5-3
1.65 to 3.6
Digital serial peripheral interface (SPI) power supply
AMP+
P6-1
5 ± 5%
Amplifier positive power supply
GND P6-2
0
Ground
AMP−
P6-3
−2.5 ± 5%
Amplifier negative power supply
AD7383
A
IN
x+
V
LOGIC
V
CC
REFIO
GND
A
IN
x–
VCC
VLOGIC
GND
12V DC
INPUT
GND
AMP+
AMP–
GND
ON-BOARD
POWER SUPPLIES
ADP7104
+5V
AMP+
ADP7182
–2.5V
AMP+
ADP166
+2.3V
VLOGIC
ADP166
+3.3V
VCC
ADA4896-2
ADA4896-2
INPUT
SIGNALS
ADR4533
+3.3V
ADR4525
+2.5V
POWER
GOOD
SPI
SPI
TO PC
USB
DIGITAL
SIGNAL
PROCESSOR
EVAL-SDP-CH1Z
CONTROLLER
BOARD
12V
CS
SCLK
SDI
SDOA
SDOB/ALERT
233
97-
003
Figure 3. EVAL-AD7383FMCZ Functional Block Diagram
