UG-851
EVAL-AD7605-4SDZ/EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide
Rev. A | Page 4 of 15
EVALUATION BOARD HARDWARE
DEVICE DESCRIPTION
The
AD7605-4
,
AD7606
/
AD7606-6
/
AD7606-4
,
AD7607
, and
AD7608
are 16-bit, 8-/6-/4-channel, simultaneous sampling
successive approximation ADCs. The devices operate from a single
2.7 V to 5.25 V power supply and feature throughput rates of up
to 200 kSPS. The devices have on-board 1 MΩ input buffers for
direct connection from the user sensor outputs to the ADC.
HARDWARE LINK OPTIONS
The functions of the link options are described in Table 3. The
default setup is configured to operate the evaluation board with
the main power supply or 9 V adapter and to interface to the
SDP board.
SOCKETS/CONNECTORS
The connectors and sockets on the evaluation board are
outlined in Table 1.
Table 1. On-Board Connectors
Connector Function
J1
7 V to 9 V, 2.0 mm dc jack connector
J2
120-way connector for
EVAL-SDP-CB1Z
interface
J3
External power terminal block, 7 V to 9 V dc input
V1 to V8
Analog input SMB connectors
The default interface to this evaluation board is via the 120-way
connector, which connects the
AD7606
/
AD7606-6
/
AD7606-4
,
AD7607
,
AD7608
, and
AD7605-4
evaluation board to the
EVAL-SDP-CB1Z
SDP board.
POWER SUPPLIES
Before applying power and signals to the evaluation board, ensure
all link positions are set according to the required operating mode.
See Table 3 for the complete list of link options.
The
AD7606
/
AD7606-6
/
AD7606-4
,
AD7607
,
AD7608
, and
AD7605-4
evaluation board is supplied with a wall-mountable
switching power supply that provides 9 V dc output. Connect
the supply to a 100 V to 240 V ac wall outlet at 50 Hz to 60 Hz.
The output from the supply is provided through a 2.0 mm inner
diameter jack that connects to the evaluation board at the J1
connector. The 9 V supply is connected to the on-board, 5 V
linear regulator that supplies the correct bias to each of the
various sections on the evaluation board and on the
EVAL-
SDP-CB1Z
SDP board.
When using the
EVAL-AD7605-4SDZ
/
EVAL-AD7606SDZ
/
EVAL-AD7606-6SDZ
/
EVAL-AD7606-4SDZ
/
EVAL-AD7607SDZ
/
EVAL-AD7608SDZ
evaluation board with the
EVAL-SDP-CB1Z
SDP board, power the evaluation board through the J1 connector.
If the
EVAL-AD7605-4SDZ
/
EVAL-AD7606SDZ
/
EVAL-
AD7606-6SDZ
/
EVAL-AD7606-4SDZ
/
EVAL-AD7607SDZ
/
EVAL-
AD7608SDZ
evaluation board is used without the 9 V adapter, an
external power supply in the range 7 V to 9 V must be connected to
the J3 terminal block to supply the
ADP7104
5 V linear regulator.
Each supply is decoupled on the
EVAL-AD7605-4SDZ
/
EVAL-
AD7606SDZ
/
EVAL-AD7606-6SDZ
/
EVAL-AD7606-4SDZ
/
EVAL-
AD7607SDZ
/
EVAL-AD7608SDZ
evaluation board using 10 μF
tantalum and 100 nF multilayer ceramic capacitors.
Table 2. External Power Supplies Required
Power Supply
Input
Voltage
Range (V)
Description
J1connector
7 to 9
Default power supply option using
the supplied mains power adapter
J3 terminal
block
7 to 9
Alternative power supply option
Requires external source
CHANNEL INPUT
Depending on the specific evaluation board, the external signal
can be applied to various combinations of V1 to V8.
Connectors V1 to V8 allow users to connect external signals to
the ADC channel inputs. The evaluation board is supplied with
the connection options that are required for the specific device
number that is being evaluated. The various combinations of
connection options to which external signals can be applied are
defined in the following sections.
EVAL-AD7606SDZ
The
EVAL-AD7606SDZ
evaluation board is supplied with the
AD7606
mounted at U1 (see Figure 1). The
AD7606
is an 8-
channel data acquisition system (DAS) with a simultaneous
sampling ADC. On this evaluation board external signals can
be applied to the V1 to V8 terminal blocks.
EVAL-AD7607SDZ
The
EVAL-AD7607SDZ
evaluation board is supplied with the
AD7607
mounted at U1 (see Figure 1). The
AD7607
is an 8-
channel DAS with a simultaneous sampling ADC. On this
evaluation board external signals can be applied to the V1 to V8
terminal blocks.
EVAL-AD7608SDZ
The
EVAL-AD7608SDZ
evaluation board is supplied with the
AD7608
mounted at U1 (see Figure 1). The
AD7608
is an 8-
channel DAS with a simultaneous sampling ADC. On this
evaluation board external signals can be applied to the V1 to V8
terminal blocks.
EVAL-AD7606-6SDZ
The
EVAL-AD7606-6SDZ
evaluation board is supplied with the
AD7608
mounted at U1 (see Figure 1). The
AD7606-6
is a 6-
channel DAS with a simultaneous sampling ADC. External
signals can be applied to V1, V2, V3, V5, V6, and V7. Input
Connectors V5 to V7 route to the
AD7606-6
V4 to V6 input
channels, respectively.
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