MC33941

Sensors

4

Freescale Semiconductor

Table 2. Static Electrical Characteristics

Characteristic

Symbol

Min

Typ

Max

Unit

Supply Voltage

9.0

12

18

V

(Quiescent supply current measured over temperature. Assumes

that no external devices connected to internal voltage regulators)

6.0

7.0

8.0

mA

VOLTAGE REGULATOR

5V Regulator Voltage

7.0 V

VCCCAP

4.75

5

5.25

V

ELECTRODE SIGNALS (E1–E7)

Total Variance Between Electrode Measurements (5)

–

–

3.0

%

Electrode Maximum Harmonic Level Below Fundamental (5)

–

-20

–

dB

Electrode Transmit Output Range

1.0

–

8.0

V

Receive Input Voltage Range

0

–

9.0

V

Grounding Switch on Voltage(6)

–

–

5.0

V

LOGIC I/O (C, B, A)

CMOS Logic Input Low Threshold

0.3

–

–

Logic Input High Threshold

–

–

0.7

Voltage Hysteresis

–

0.06

–

Input Current

10

-5.0

–

–

50

5.0

µA

SIGNAL DETECTOR (LPCAP)

Detector Output Resistance

–

50

–

kΩ

LPCAP to LEVEL Gain

3.6

4.0

4.4

LPCAP to LEVEL Offset

-3.3

-3.0

-2.7

V

Notes

5.

Verified by design and characterization. Not tested in production.

6.

Current into grounded terminal under test = 1.0 mA.