STPMS2L-PUR datasheet(24/33 Pages) STMICROELECTRONICS

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Theory of operation

STPMS2

24/33

Doc ID 16525 Rev 3

Table 13.

Description of output signals and configuration bits CFG[39:0]

Hard mode

Soft mode

Internal signal

Description

MS0

CFG[0]

LP/HP

Operating mode:

LP/HP=0: LPR

LP/HP=1: HPR

MS0

CFG[1]

GAIN

Gain selector of current channel pre-amplifier:

GAIN=0: x2

GAIN=1: x4

GAIN=2: x8

GAIN=3: x16

MS0

CFG[2]

MS1

CFG[3]

Temperature compensation of voltage reference:

TC=0: TC = 60 ppm/°C

TC=1: Flattest TC = +30 ppm/°C

TC=2: TC = +160 ppm/°C

TC=3: TC = -160 ppm/°C

MS1

CFG[4]

MS2

CFG[5]

DOMUL

Output multiplexer enable:

DOMUL=0: outputs not multiplexed

DOMUL=1: outputs multiplexed

MS2

CFG[6]

PDV

Power-down of voltage modulator:

PDV=0: Voltage modulator on

PDV=1: Voltage modulator off

MS3

CFG[7]

EBISTC

Current modulator BIST DAC enable:

EBISTC=0: BISTC disabled

EBISTC=1: BISTC enabled

– EBISTC

Frequency output

CLK/215 x LFC

MS3

CFG[8]

EBISTV

Voltage modulator BIST DAC enable:

EBISTC=0: BISTV disabled

EBISTC=1: BISTV enabled

– EBISTV

Frequency output

CLK/215 x LFV

MS3

CFG[9]

EINCHPC

CIP, CIN input pin enable:

EINCHPC=0: CIN CIP disabled

EINCHPC=1: CIN CIP enabled

MS3

CFG[10]

EINCHPV

VIP, VIN input pin enable:

EINCHPC=0: VIN VIP disabled

EINCHPC=1: VIN VIP enabled

CFG[11]

ECHPLFC

Low frequency chopper of current modulator enable:

ECHPLFC=0: LFC disabled

ECHPLFC=1: LFC enabled (1)

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