L9780 datasheet(46/56 Pages) STMICROELECTRONICS

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Electrical characteristics

L9780

46/56

DocID026356 Rev 3

GAIN

Bit SAMP[2..0] = 110; nominal gain = 8

7.84

8.16

V/V

Bit SAMP[2..0] = 111; nominal gain = 12

11.7

12.18

Input offset voltage

-0.3

0.3

Bias reference voltage (REF2)

0.498

0.502

VCCA

Output voltage swing

Maximum output voltage,

output current = -500 μA

VCCA –

0.2

VCCA

Minimum output voltage,

output current = 500 μA

200

Scaling amplifier

GAIN

Bit SAMP[2..0] = 000; nominal gain = 1

0.995

1.005

V/V

Bit SAMP[2..0] = 001; nominal gain = 1.5

1.485

1.515

Bit SAMP[2..0] = 010; nominal gain = 2

1.98

2.02

Bit SAMP[2..0] = 011; nominal gain = 3

2.97

3.03

Bit SAMP[2..0] = 100; nominal gain = 4

3.94

4.04

Bit SAMP[2..0] = 101; nominal gain = 6

5.88

6.12

Bit SAMP[2..0] = 110; nominal gain = 8

7.84

8.16

Bit SAMP[2..0] = 111; nominal gain = 12

11.76

12.24

Input offset voltage

-0.3

0.3

A/D conversion

INRC amplifier

INRC pin voltage = 225 mV

180

207

cnts

INRC pin voltage = 400 mV

324

364

INRC pin voltage = 500 mV

407

453

VCCS current conversion

FV pin voltage = 4.3 V

863

898

FV pin voltage = 3.85 V

775

802

FV pin voltage = 2.5 V

508

515

FV pin voltage = 1.15 V

221

248

FV pin voltage = 700 mV

125

160

ADC error conversion

Mean error after 8 A/D conversions

-4

Maximum error for each conversion

-2

Table 11. FVOUT, scaling amplifiers, A/D conversion, RFV resistor (continued)

Parameter

Conditions

Min.

Max.

Unit

Table 12. VCCS, PG1 (PG2) driver, Heater Fet driver

Parameter

Conditions

Min.

Max.

Unit

VCCS

SNS common mode range

Design information

-2

2.4

L9780 Datasheet(PDF) 46 Page - STMicroelectronics

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