ZSSC3122 datasheet(9/64 Pages) ETC2

9 / 64 page

ZSSC3122

cLite™ Low Voltage Capacitive Sensor Signal Conditioner

Data Sheet

August 16, 2011

without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes

without notice.

9 of 63

1.3

Electrical Parameters

See important footnotes at the end of the following table.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SUPPLY CURRENT

Best case settings:

8-bit, 125ms Power Down

100

Update Mode Current (varies with

part configuration)

IDD

Worst case settings:

14-bit, 0ms Power Down

750

1100

μA

Extra Current with PDM enabled *

IPDM

150

μA

-40 to 85°C

0.6

μA

Sleep Mode Current

ISLEEP

-40 to 125°C

μA

Voltage Levels

Power-On-Reset Level

VPOR

1.6

1.7

1.75

Active Regulated Voltage

VREG

2.4

2.55

2.7

CAPACITANCE-TO-DIGITAL CONVERTER (CDC)

Resolution

RESCDC

Bits

Excitation Frequency of External

Capacitances C0 and C1

(for a system frequency fSYS)

fEXC

fSYS/2

kHz

Integral Nonlinearity (INL)

INLCDC

0% to 90% input, 14-bit

0.2

Differential Nonlinearity (DNL) *

DNLCDC

0% to 90% input, 14-bit

0.9

LSB

EEPROM

Number of Erase/Write Cycles

nWRI_EEP

@85

C

100k

Data Retention

tWRI_EEP

@100

C

Year

TEMPERATURE CONVERSION

-40 to 125°C, 8-bit mode

0.64

0.96

1.6

Resolution in °C *

RESTEMP

-40 to 125°C, 14-bit mode

0.01

0.015

0.025

°C

Nonlinearity First Order Fit *

, 3

INLCDC

-40 to 125°C

±0.5

±1

°C

Nonlinearity Second Order Fit *

, 4

INLCDC

-40 to 125°C

±0.2

±0.4

°C

VSUPPLY > VREG+0.25V

0.03

0.1

Voltage Dependency *

PSRTEMP

1.8V ≤ VSUPPLY ≤ VREG + 0.25V

1.25

2.25

°C/V

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