L7250 datasheet(10/46 Pages) STMICROELECTRONICS

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L7250

10/46

V18

IDRIVE

V33

IDRIVE

Output base current drive

NEGATIVE REGULATOR

FREQ0

Oscillator frequency

Default configuration

500

KHz

FREQ1

Oscillator frequency

TestRegister = ‘00001001’

or = ‘00101001’

MHz

VoutH

High level output voltage

TBD

VoutL

Low level output voltage

TBD

VNEerr

OFFS

Feedback input offset

-10

VNEGerr

BIAS

Feedback input bias

µA

Vneg_err

_cmrr

Common mode rejection ratio

f < 10 KHz, tested at DC only

CMRR=AV DIFF/AV CM

Vneg_err

_svrr

supply voltage rejection ratio VCV f < 10 KHz, tested at DC only

SHOCK SENSOR

SkIgain0 Input OPAMP gain0

Reg02H ‘b7’ = 0

V/V

SkIgain1 Input OPAMP gain1

Reg02H ‘b7’ = 1

SkIoff

Input OPAMP offset

-15

+15

SkIinput

Input OPAMP input impedance

Reg02H ‘b7’ = 0

Mohm

SkFgain

Filter OPAMP open loop gain

SkFband Filter OPAMP unity gain

bandwidth

Guaranteed by design

Mhz

SkFoff

Filter OPAMP offset voltage

-10

+10

SkOThH0 Output window comparator

VthHigh

Referred to Vref25 ;

Reg02H ‘b6’ = 0

200

SkOThH1 Output window comparator

VthHigh

Referred to Vref25 ;

Reg02H ‘b6’ = 1

500

SkOThL0 Output window comparator

VthLow

Referred to Vref25;

Reg02H ‘b6’ = 0

200

SkOThL1 Output window comparator

VthLow

Referred to Vref25;

Reg02H ‘b6’ = 1

500

ELECTRICAL CHARACTERISTCS (continued)

POWER SUPPLY [VCC5 & VCV] VCC5 = 5V ±10%, VCV = 12V ±10%. Tamb = 25°C (unless otherwise specified)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

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