Datasheet

ADAS1000-3/ADAS1000-4 Data Sheet
Rev. A | Page 44 of 76
Figure 70. Configuring Multiple Devices to Extend Number of Electrodes/Leads
(This example uses ADAS1000-4 as master and ADAS1000-2 as slave; other arrangements possible.)
Table 16. Some Possible Arrangements for Gang Operation
Master Slave 1 Slave 2 Features Number of Electrodes Number of Leads
ADAS1000 ADAS1000-2 ECG, respiration, pace 10 ECG, CM_IN, RLD 12-lead + spare ADC channel
ADAS1000 ADAS1000-2 ADAS1000-2 ECG, respiration, pace 15 ECG, CM_IN, RLD 15-lead + 3 spare ADC channels
ADAS1000 ADAS1000-3 ECG, respiration, pace 8 ECG, CM_IN, RLD 12-lead (derived leads)
ADAS1000-3 ADAS1000-2 ECG 8 ECG, CM_IN, RLD 12-lead (derived leads)
ADAS1000-4 ADAS1000-2 ECG, respiration, pace 8 ECG, CM_IN, RLD 12-lead (derived leads)
SYNC_GANG
TAKE LEAD
DATA
TAKE
ELECTRODE
DATA
ELECTRODES
×3
VREF
REFOUT
REFIN
CAL_DAC_IO
AMP
AMP
ADC
RESPIRATION PATH
MUXES
AC
LEAD-OFF
DAC
ADC
3 × ECG PATH
FILTERS,
CONTROL,
AND
INTERFACE
LOGIC
PACE
DETECTION
CS
SCLK
SDI
SDO
DRDY
LEAD-OFF
DETECTION
COMMON-
MODE AMP
RLD_SJ
DRIVEN
LEAD AMP
SHIELD
DRIVE
AMP
SHIELD
RLD_OUT
CM_IN
XTAL1 XTAL2
IOVDD
CLOCK GEN/OSC/
EXTERNAL CLK
SOURCE
EXT RESP_LA
EXT RESP LL
VCM_REF
(1.3V)
CLK_IO
AVDD
ADCVDD
DVDD
EXT RESP_RA
CM_OUT/
WCT
AC
LEAD-OFF
DAC
10kΩ
ADCVDD, DVDD
1.8V
REGULATORS
(optional)
(optional)
ADAS1000-4
CAL_DAC_IN
CM_IN
SYNC_GANG
ELECTRODES
×5
AMP
MUXES
ADC
5 × ECG PATH
FILTERS,
CONTROL,
AND
INTERFACE
LOGIC
PACE
DETECTION
CS
SCLK
SDI
SDO
DRDY
LEAD-OFF
DETECTION
COMMON-
MODE AMP
RLD_SJ
IOVDD
CLOCK GEN/OSC/
EXTERNAL CLK
SOURCE
VCM_REF
(1.3V)
CLK_IO
AVDD
ADCVDD
DVDD
ADCVDD, DVDD
1.8V
REGULATORS
(optional)
(optional)
ADAS1000-2
SLAVE
CALIBRATION
DAC
RESPIRATION
DAC
VREF
REFOUT
REFIN
10997-030