UG-991 EVAL-AD5663R-SDZ/EVAL-AD5667R-SDZ User Guide
Rev. 0 | Page 3 of 10
EVALUATION BOARD HARDWARE
POWER SUPPLIES
The E VA L-AD5663R-SDZ and EVA L-AD5667R-SDZ
evaluation board can be powered by the J3 or J2 connector.
Supply the J3 connector with 6 V to 20 V and is regulated by
the ADP7102 low noise, complimentary metal-oxide semi-
conductor (CMOS) low dropout regulator (LDO). Alternatively,
the J2 connector can provide power to the board, bypassing
the LDOs, and is intended for use with well regulated, bench
supplies. All supplies are decoupled to ground with 10 µF
tantalum and 0.1 µF ceramic capacitors.
Table 1. Power Supply Connectors
Connector No. Label Voltage
J3, Pin 1 +6 V Single 6 V power supply, used
to generate the INT_VCC
board supply
J3, Pin 2 AGND Analog ground
J2, Pin 1 EXT_VCC External V
CC
J2, Pin 2 AGND Analog ground
LINK OPTIONS
A number of link options are provided on the E VA L -AD5663R-
SDZ and E VA L -AD5667R-SDZ board that must be set for the
required operating conditions before using the board. Table 2
describes the positions of the links to control the evaluation
board via the SDP board using a PC and external power
supplies. The functions of these link options are described in
detail in Table 3.
Table 2. Link Options for SDP Control (Default)
Link Number Option
LK1 A
LK2 A
LK3 A
LK4 B
LK5 A
LK6 Inserted
LK7 Inserted
LK8 A
Table 3. Link Functions
Link Number Function
LK1 This link selects the positive voltage source (VCC) for the board.
Position A selects the output from the LDO ADP7102 as the voltage source for the board (supplied by 6 V).
Position B selects the external voltage as the voltage source for the board.
LK2 This link selects the
LDAC
pin voltage source.
Position A selects the voltage source from the SDP general-purpose input/output (GPIO).
Position B selects the voltage source (VCC).
Position C selects AGND.
LK3 This link selects the
CLR
pin voltage source.
Position A selects the voltage source from the SDP GPIO.
Position B selects the voltage source (VCC).
Position C selects AGND.
LK4 This link selects the ADDR pin voltage source, which sets the [A1:A0] I
2
C address bits on the AD5667R.
Position A selects the voltage source from the SDP GPIO. Address bits depend on state of GPIO.
Position B selects the voltage source (VCC), giving address bits of 00.
Position C selects AGND, giving address bits of 11.
This jumper can also be no connection, giving address bits of 10.
LK5 This link selects the reference voltage source.
Position A allows use of the internal reference, or can also be used to apply an external reference after the internal
reference is disabled.
Position B connects the evaluation board reference to the DAC. This position must only be used after the internal
reference is disabled.
LK6 This link connects the ADG728 switch and the AD7992 analog-to-digital converter (ADC) to V
OUT
A of the DAC.
Removed: not connected.
LK7 This link connects the ADG728 switch and the AD7992 ADC to V
OUT
B of the DAC.
Inserted: connected.
Removed: not connected.
LK8 This link selects the
RESET
pin voltage level.
Position A selects the voltage source VCC.
Position B selects AGND.
