MLX90821 datasheet(7/40 Pages) MELEXIS

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MLX90821

Relative Pressure Sensor IC

Page 7 of 40

REV 004 – 4 MAR 2021

3901090821

General Electrical Specifications

DC Operating Parameters TA = -40°C to 150°C

Parameter

Symbol

Remarks

Min

Typ(1)

Max

Units

Nominal supply voltage

Vdd

4.5

5.5

Nominal supply current

Idd

No output load connected, no NTC

connected(2)

8.5

Decoupling capacitor on

supply

100

Capacitive load on

analog output

Cload

100

470

Resistive load on analog

output

Rload

Pull up or Pull down

4.7

kOhm

Capacitive load on SENT

output

Cload

Pure capacitive load

2.2

CRC load circuit

(C close to device + Series R + C close to

connector)

1.1nF +

220Ω +

1.1nF

Resistive load on SENT

output

Pull-up to Vdd at receiver(3)

kOhm

Supply programming

entry level

Vdd_com Threshold to enter communication mode

6.2

7.8

Analog POR level (rising)

3.1

3.5

3.9

Analog POR hysteresis

100

500

Digital POR level (rising)

2.05

2.3

2.7

Digital POR hysteresis

200

Analog regulator

VDDA

-9%

3.5

+9%

Nominal bridge supply

voltage

Vbrg

-9%

+9%

Sensing element

sensitivity

mV/V/bar

ADC resolution

Bits

Diagnostic limits

Diag low

Pull-up ≥ 4.7kΩ

Pull-down ≥ 4.7kΩ

%Vdd

Diag high Pull-up ≥ 4.7kΩ

Pull-down ≥ 8kΩ

%Vdd

Clamping levels analog

output

Clamp

low

Programmable range with 7 bit resolution

for the low clamping level, 9 for the high

12.5

%Vdd

Clamp

high

100

%Vdd

Typical values are defined at TA = +25°C and VDD = 5V.

2 Only applicable for SENT output and combination with NTC option.

As specified in the SENT standard

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