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MAX30002 Datasheet(PDF) 17 Page - Maxim Integrated Products

Part # MAX30002
Description  Ultra-Low-Power, Single-Channel Integrated Bioimpedance (BioZ) AFE
PDF  44 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX30002 Datasheet(HTML) 17 Page - Maxim Integrated Products

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Current Generator
The current generator provides square-wave modulating
differential current that is AC injected into the body via
pins DRVP and DRVN with the bio-impedance sensed
differentially through pins BIP and BIN. Two and four
electrode configurations are supported for typical wet and
dry electrode impedances.
Current amplitudes between 8µAPK to 96µAPK are select-
able with current injection frequencies between 128Hz
and 131.072kHz in power of two increments. See register
CNFG_BIOZ (0x18) for configuration selections.
Current amplitude should be chosen so as not exceed
90mVP-P at the BIP and BIN pins based on the network
impedance at the current injection frequency. A 47nF DC
blocking capacitor is required between both DRVP and
DRVN and their respective electrodes.
Table 2. Programmable Resistive Load Values
RNOM (Ω)
RMOD
(mΩ)
RVAL
RMOD
<2>
<1>
<0>
<3>
<2>
<1>
<0>
5000.000
-
0
0
0
0
0
0
0
2960.7
0
0
0
0
0
0
1
980.6
0
0
0
0
0
1
0
247.5
0
0
0
0
1
0
0
2500.000
—
0
0
1
0
0
0
0
740.4
0
0
1
0
0
0
1
245.2
0
0
1
0
0
1
0
61.9
0
0
1
0
1
0
0
1666.667
—
0
1
0
0
0
0
0
329.1
0
1
0
0
0
0
1
109.0
0
1
0
0
0
1
0
27.5
0
1
0
0
1
0
0
1250.000
—
0
1
1
0
0
0
0
185.1
0
1
1
0
0
0
1
61.3
0
1
1
0
0
1
0
1000.000
—
1
0
0
0
0
0
0
118.5
1
0
0
0
0
0
1
39.2
1
0
0
0
0
1
0
833.333
—
1
0
1
0
0
0
0
82.3
1
0
1
0
0
0
1
27.2
1
0
1
0
0
1
0
714.286
—
1
1
0
0
0
0
0
60.5
1
1
0
0
0
0
1
20.0
1
1
0
0
0
1
0
625.000
—
1
1
1
0
0
0
0
46.3
1
1
1
0
0
0
1
15.3
1
1
1
0
0
1
0
MAX30002
Ultra-Low-Power, Single-Channel Integrated
Bioimpedance (BioZ) AFE
www.maximintegrated.com
Maxim Integrated │ 17



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