STPMS1 datasheet(8/23 Pages) STMICROELECTRONICS

No de pièce	STPMS1

Description	Dual-channel 1-bit, 2 MHz, 1st order sigma-delta modulator with embedded PGA

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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General operating conditions

STPMS1

8/23

Doc ID 16524 Rev 2

CLK - clock signal on CLK pin

CLKsample - sigma-delta sample frequency

bsV - sigma-delta bitstream of voltage signal

bsC - sigma-delta bitstream of current signal

DATA - multiplexed data of voltage and current signal on DAT pin

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VOH

Output high voltage

IO=-1 mA, CL=50 pF, VCC=3.2 V

VCC-

0.4

V

VOL

Output low voltage

IO=+1 mA, CL=50 pF, VCC=3.2 V

0.4

V

IUP

Pull up current

15

µA

tTR

Transition time

CLOAD=50 pF

10

ns

tL

Latency

From 50 % of CLK to 50 % to DAT

40

ns

Clock input

fCLK

Nominal frequencies

Low precision

1.0

1.228

MHz

High precision

2.0

2.458

MHz

On chip reference voltage

VREF

Reference voltage

1.21

1.23

1.25

V

TC

Temperature coefficient

After calibration

30

50

ppm/

°C

Table 5.

General operating conditions (continued)

Figure 3.

Timing diagram

AM07832v1

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