Analog Devices MAX30001G Manual page 17

MAX30001G Evaluation Kit
Detailed Description of Hardware
The MAX30001G EV kit provides a single platform to
evaluate the functionality and features of the MAX30001G
with Biopotential (ECG and R-to-R) and Bioimpedance
(BioZ) measurement capabilities. The board contains
jumpers, optional resistors, and capacitors to test the
MAX30001G under several conditions. A list of all jumpers
and their respective functions is available in
onboard 32.768kHz crystal oscillator (U5) supplies FCLK
to the IC, but external frequency generation is supported.
The EV kit utilizes the MAX32630FTHR Cortex-M4F
Microcontroller for Wearables for interfacing with the
GUI and optionally providing power to the MAX30001G.
The MAX32630FTHR operates either from a host PC or
Table 1. Description Of Jumpers
JUMPER SHUNT POSITION
J_ECGN
J_ECGP
EN_BN
EP_BP
EN_UNBAL
EP_UNBAL
EP_EN
J_BIN
J_BIP
RN
RP
DN_BN
DP_BP
BP_BN
J_DRVN
J_DRVP
BB_SEL
J_RBIAS
BUFF1_IN
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Table
1-2* Connects ECGN on the IC to C_ECGN on the EV kit.
1-2* Connects ECGP on the IC to C_ECGP on the EV kit.
1-2 Connects ECGN to BIN.
1-2 Connects ECGP to BIP.
1-2* Bypasses the ECG electrode unbalance on ECGN.
1-2* Bypasses the ECG electrode unbalance on ECGP.
1-2 Short ECGP to ECGN.
1-2* Connects BIN on the IC to C_BIN on the EV kit.
1-2* Connects BIN on the IC to C_BIN on the EV kit.
1-2 Connects one end of R28 to BIN.
1-2 Connects one end of R28 to BIP.
1-2* Connects DRVN to BIN.
1-2* Connects DRVP to BIP.
1-2 Short BIP to BIN.
1-2* Connects DRVN on the IC to C_DRVN on the EV kit.
1-2* Connects DRVP on the IC to C_DRVP on the EV kit.
1-2* Use VCM as the body bias.
2-3 Use an adjustable voltage from 0V to OVDD as the body bias. Adjust voltage with R7.
1-2* Connect an external 324kΩ resistor to RBIAS.
1-2 Input to second buffer of U4.
directly from a Li+ battery. If an SD card is present in the
MAX32630FTHR, register settings and measurement
configurations can be saved through the GUI. When the
EV kit operates without a host PC, pressing SW2 on the
MAX32630FTHR initiates the measurement and saves
log files to the SD card. Logging is stopped by pressing
SW2 a second time.
See Figure 16
1. An
biopotential circuitry.
Note: Ball C2 on the MAX30001G is called N.C. and
should not be connected to anything. This PCB does
route this signal to the testpoint labeled AOUT. Do not
connect anything to this testpoint.
DESCRIPTION
Evaluates: MAX30001G
for a simplified schematic of the EV kit
Analog Devices │ 17