MAX30002 datasheet(36/44 Pages) MAXIM

36 / 44 page

Table 25. CNFG_BIOZ (0x18) Register Functionality (continued)

INDEX

NAME

DEFAULT

FUNCTION

D[13:12]

DLPF[1:0]

BIOZ Channel Digital Low-Pass Filter Cutoff Frequency

00 = Bypass (Decimation only, no FIR filter)

01 = 4Hz

10 = 8Hz

11 = 16Hz (Available for 64, 62.5, 50, and 49.95sps BIOZ Rate selections only)

Note: See Table 39 below. If an unsupported DLPF setting is specified, the 4Hz

setting (DLPF[1:0] = 01) will be used internally; the CNFG_BIOZ register will continue

to hold the value as written, but return the effective internal value when read back.

D[11:8]

FCGEN[3:0]

1000

BIOZ Current Generator Modulation Frequency

0000 = 4*fMSTR

(approximately 128000Hz) 1000 = fMSTR/64 (approximately 500Hz)

0001 ≈ 2*fMSTR

(approximately 80000Hz) 1001 = fMSTR/128 (approximately 250Hz)

0010 ≈ fMSTR

(approximately 40000Hz) 101x = fMSTR/256 (approximately 125Hz)

0011 ≈ fMSTR/2

(approximately 18000Hz) 11xx = fMSTR/256 (approximately 125Hz)

0100 = fMSTR/4

(approximately 8000Hz)

0101 = fMSTR/8

(approximately 4000Hz)

0110 = fMSTR/16 (approximately 2000Hz)

0111 = fMSTR/32 (approximately 1000Hz)

Actual frequencies determined by FMSTR selection, see CNFG_GEN register and

table below for details.

D[7]

CGMON

BIOZ Current Generator Monitor

0 = Current Generator Monitors disabled

1 = Current Generator Monitors enabled, requires active BIOZ channel and Current

Generators. Enables BCGMON interrupt and status bit behavior. Monitors current

source compliance levels, useful in detecting DRVP/DRVN lead off conditions with 4

electrode BIOZ applications.

D[6:4]

CGMAG[2:0]

000

BIOZ Current Generator Magnitude

000 = Off (DRVP and DRVN floating, Current Generators Off)

001 = 8µA

010 = 16µA

011 = 32µA

100 = 48µA

101 = 64µA

110 = 80µA

111 = 96µA

See Table 40 and 41 below for a list of allowed CGMAG settings vs. FCGEN

selections.

D[3:0]

PHOFF[3:0]

0000

BIOZ Current Generator Modulation Phase Offset

Phase Resolution and Offset depends on FCGEN setting:

FCGEN[3:0] ≥ 0010: Phase Offset = PHOFF[3:0]*11.25° (0 to 168.75°)

FCGEN[3:0] = 0001: Phase Offset = PHOFF[3:1]*22.50° (0 to 157.50°)

FCGEN[3:0] = 0000: Phase Offset = PHOFF[3:2]*45.00° (0 to 135.00°)

MAX30002

Ultra-Low-Power, Single-Channel Integrated

Bioimpedance (BioZ) AFE

www.maximintegrated.com

Maxim Integrated │ 36

MAX30002 Datasheet(PDF) 36 Page - Maxim Integrated Products

MAX30002 Datasheet(HTML) 36 Page - Maxim Integrated Products

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

Datasheet Download

Link URL