Analog Devices MAX30001 Manual page 22

MAX30001 Evaluation System
ECGP
ECGN
BIP
BIN
DRVP
DRVN
Figure 18. Default Measurement Channel Jumper Configurations
BioZ Measurement
Additionally, the EV kit includes a 100Ω resistor to verify
the BioZ configuration. Attach shunts on RP and RN to
connect the resistor to the BioZ inputs and shunts on
DP_BP and DN_BN to route the drive signal to the BioZ
channel. Figure 19 illustrates these connections.
Refer to the MAX30001 data sheet for details on configuring
a BioZ measurement. Note that the default setting of the
current generator is FMSTR/64 (about 500Hz) and the
BioZ channel has an internal high-pass filter with a default
1kHz cutoff frequency. In order to correctly measure the
100Ω resistor, bypass or lower the filter cutoff frequency
or increase the current generator frequency.
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EP_UNBAL
0Ω
EP_EN
0Ω
EN_UNBAL
0Ω RP
BP_BN
0Ω
RN
47nF
47nF
EP_BP EN_BN
100Ω
DP_BP DN_BN
Pace Detection
To enable pace detection, the ECGN and ECGP lines must
be connected to BIN and BIP by shunting EN_BN and
EP_BP, then configuring the device registers as described
in the IC datasheet. Refer to
configuration to measure ECG with pace detection.
Alternatively, EP_BP and EN_BN can be left open and
J_BIP and J_BIN shunted. This measures pace directly
on the BIP and BIN inputs and allows another signal to be
measured on the ECG channel. In this configuration, the
measured pace signal may not correspond to the ECG
measurement.
Evaluates: MAX30001
MAX30002
J_ECGP
ECGP
J_ECGN
ECGN
J_BIP
BIP
J_BIN
BIN
J_DRVP
DRVP
J_DRVN
DRVN
Figure 20 for a jumper
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