UG-426 EVAL-ADAS1000SDZ User Guide
Rev. A | Page 8 of 44
CONNECTING AN ECG SIGNAL
The user needs to connect a signal source to the evaluation
board connector J1 for measurement purposes. Ideally,
this would be a patient simulator. In demonstrations at Analog
Devices, the PS420 patient simulator (from Fluke Biomedical
Division of Fluke Electronics Corporation) is used.
Note that the board is not designed for direct connection to
patients or animals for testing.
Users should connect the appropriate signal to the ECG
electrode inputs and RLD_OUT electrode.
Table 2. Electrode Connector, J1
Pin No. Mnemonic Description
1 V2 Analog input, Master ECG5_V2
2 V3 Analog input, Slave ECG1_V3
3 V4 Analog input, Slave ECG2_V4
4 V5 Analog input, Slave ECG3_V5
5 V6 Analog input, Slave ECG4_V6
6 SHIELD Output of shield driver
7 CE Common electrode, Master CM_IN
8 NC Not connected
9 RA Analog input, right arm, Master
ECG3_RA
Analog input, left arm, Master ECG1_LA
11 LL Analog input, left leg, Master ECG2_LL
12 V1 Analog input, Master ECG4_V1
13 Spare Analog input, chest electrode or
auxiliary bio-potential input, Slave ECG5
14 RLD Right leg drive, RLD_OUT
SDP Interface Connector, J2
The purpose of this connector is to facilitate interfacing
with the Analog Devices SDP1Z control board which is USB
controlled. This control board is specific to the operation of this
module as a standalone evaluation and learning platform. This
connector is not intended for customer-specific interfacing.
Main ADAS SPI, J4
This connector provides the ADAS1000 digital interface pins so
that the device may be used in standalone mode (without the
SDP control board). The user may use this connecter to
interface to the device in order to develop their own code and
evaluate the ADAS1000 directly.
Note that on the board, the /CS, SDI, and SDO paths for each
device are separate for ultimate flexibility in control of the
devices. When controlled via the SDP board, the /CS line is
shared (LK12 inserted). When using multiple devices, the
SDI and SDO paths can be shared, and each device can be
controlled via its own /CS line, allowing for easy control with
minimum wires.
Table 3. SPI Connector, J4
Pin No. Mnemonic Device Description
1
PD
both Power down, active low
2
RESET
both Device reset, active low
3 SDI_1 slave Serial data input
4 SDI_0 master Serial data input
5 SDO_1 slave Serial data output
6, 12, 13, 14 DGND both Digital ground
7 SDO_0 master Serial data output
8
CS
_0
master Chip select master
9
CS
_1
slave Chip select slave
11
DRDY
master Data ready, active low
Timing Characteristics
Refer to the ADAS1000 product data sheet for information
regarding the required waveforms and behavior of the SPI
interface pins when preparing to interface directly to the
ADAS1000 SPI interface.
Pace Interface/GPIO Connector, J6
This connector provides the optional secondary interface
available from the master device for the purposes of the
customer-based digital pace detection algorithm. It is a master
interface providing MSCLK, MSDO, and
MCS
outputs to be
read by a host controller. It provides ECG data captured at
128 kHz data rate.
Pin No. Mnemonic Description
1 GPIO3 Reconfigurable IO
2 GPIO2/MSDO Reconfigurable IO/master
interface MSDO
3 GPIO1/MSCK Reconfigurable IO/master
interface MSCK
4 GPIO0/
MCS
Reconfigurable IO/master
interface
MCS
5, 6 DGND Digital ground
RESET BUTTONS
There are two reset buttons on the board. SDP reset is used for
a reset of the SDP board and ADAS reset is used for reset of
ADAS1000 devices to default/power-on configuration.
LED
There is one LED (D10) on the board, which is lit when the
board is powered from J7 (+5 V connector).