AS7058 datasheet(15/199 Pages) AMSOSRAM

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AS7058

Electrical characteristics

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DS001077 • v2-00 • 2025-Sep-24

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Symbol

Parameter

Conditions

Min

Typ

Max

Unit

ECGGAIN

Amplifier gain

range

1024

BioZ(1)

BIOZP_ERR

Phase-

measurement

error, at 50 kHz

Body impedance = 510 Ω

0.45

deg

Body impedance = 1000 Ω

0.85

deg

BIOZM_ERR

Magnitude-

measurement

error, at 50 kHz

Body impedance = 510 Ω

1.23

Body impedance = 1000 Ω

0.96

BIOZEXC_ERR

Excitation

frequency error

Internal clock at 50 kHz

BIOZEXC_FREQ

Excitation

frequency

1000

kHz

BIOZEXC_CURR

Excitation current

100

µA

GSR/EDA

GSREXC_CURR

Excitation current

0.2

µA

GSRDR

Dynamic range

0.1

3.3

MΩ

0.3

100

µS

Lead-off detection (ECG)

ECGLO_CURR

Lead-off current

Set by

ECGAMP_LEADOFF_CURR

1.5

400

ECGLO_ACC

Lead-off current

accuracy

ECGAMP_LEADOFF_CURR

= 400 nA

-5

ECGLO_FREQ

Lead-off toggle

frequency

0.25

kHz

Digital inputs (SDA_MOSI, SCL, EXTCLK_SYNC, CSXN, GPIO)

VIH

Input high

VIOVDD

× 0.7

VIL

Input low

VIOVDD ×

0.3

fEXTCLK_SYNC

External clock

frequency

Input frequency at pin

EXTCLK_SYNC; Only 2 MHz

or 4 MHz is supported

MHz

Digital outputs (SDA_MOSI, MISO, INT, GPIO)

VOH

Output high

towards GND

Current load ≤ 6 mA

VIOVDD -

0.4

VOL

Output low

towards IOVDD

Current load ≤ 6 mA

0.4

(1) BioZ measurements are done with the ams OSRAM in-house calibration and measurement flow.

AS7058 Datasheet(PDF) 15 Page - ams-OSRAM AG

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