Datasheet

Data Sheet ADAS1000-3/ADAS1000-4
Rev. A | Page 3 of 76
FUNCTIONAL BLOCK DIAGRAM
Figure 1. ADAS1000-4 3-Channel Full Featured Model
Table 1. Overview of Features Available from ADAS1000 Generics
Generic ECG Operation Right Leg Drive Respiration
Pace
Detection
Shield
Driver
Master
Interface
1
Package
Option
ADAS1000 5 ECG channels Master/slave Yes Yes Yes Yes Yes LFCSP, LQFP
ADAS1000-1 5 ECG channels Master/slave Yes Yes Yes LFCSP
ADAS1000-2
2
5 ECG channels Slave LFCSP, LQFP
ADAS1000-3 3 ECG channels Master/slave Yes Yes Yes LFCSP, LQFP
ADAS1000-4 3 ECG channels Master/slave Yes Yes Yes Yes Yes LFCSP, LQFP
1
Master interface is provided for users wishing to utilize their own digital pace algorithm; see the Secondary Serial Interface section.
2
This is a companion device for increased channel count purposes. It has a subset of features and is not intended for standalone use. It may be used in conjunction with
any master device.
ELECTRODES
×3
VREF
REFOUTREFIN CAL_DAC_IO
AMP
ADC
RESPIRATION PATH
MUXES
AC
LEAD-OFF
DAC
CALIBRATION
DAC
AMP
ADC
3× ECG PATH
FILTERS,
CONTROL,
AND
INTERFACE
LOGIC
PACE
DETECTION
CS
SCLK
SDI
SDO
DRDY
GPIO3
GPIO1/MSCLK
GPIO2/MSDO
GPIO0/MCS
AC
LEAD-OFF
DETECTION
–
+
COMMON-
MODE AMP
RLD_SJ
DRIVEN
LEAD
AMP
SHIELD
DRIVE
AMP
SHIELDRLD_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
10kΩ
ADCVDD, DVDD
1.8V
REGULATORS
ADAS1000-4
BUFFER
RESPIRATION
DAC
10997-001