SA5775A datasheet(5/10 Pages) PHILIPS

Part #	SA5775A

Description	Differential air core meter driver

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product specification

SA5775A

Differential air-core meter driver

1999 Sep 20

5

DC ELECTRICAL CHARACTERISTICS

VIGN = 7.5 to 18 V; VCC = 4.5 to 5.5 V; TA = –40 to +85°C.

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIGN

Ignition supply voltage

7.5

18

V

IIGN

Ignition supply current

VIGN = 18 V no load

VBB = 18 V with load

RLC, RLS = RLMIN1,2

25

160

mA

ICC

Logic supply current

VCC = 5.5 V

1

mA

VOH

Output high voltage

Data out IOH = 300 µA

VCC – 0.8

VOL

Output low voltage

Data out IOL = 1.5 mA

0.4

V

VOL Status

IOL = 2.8 mA

0.8

V

IOH Status

ST, VCC = 5 V

25

µA

VIH

Input high voltage

CS, SCLK, DATAIN

0.7 x VCC

V

VIL

Input low voltage

CS, SCLK, DATAIN

0.3 x VCC

V

IIH

Input high current

CS, SCLK, DATAIN, VIN = 0.7 x VCC

10

µA

IIL

Input low current

CS, SCLK, DATAIN, VIN = 0.3 x VCC

10

µA

ACC

Output function accuracy3

RLC, RLS = RLMIN

–0.5

0.5

Degree

ISD

Output shut-down current

COS+, COS–, SIN+, SIN–

ISINK

VIGN = VIGN (MAX)

VIGN = VIGN (MIN)

ISOURCE VIGN = VIGN (MAX)

VIGN = VIGN (MIN)

97

43

85

43

500

300

500

300

mA

VDRIVE

Coil drive voltage

VIGN = VIGN (MAX)

VIGN = VIGN (MIN)

68

78

%VIGN

RLMIN

Minimum load resistance

TA = 85°C

TA = 25°C

TA = –40°C

215

171

138

Ω

NOTE:

1. See Test Circuit.

2. Maximum current is when output is 45 degrees; TA = –40°C, and RL = 138 Ω.

3. See Table “Output function accuracy”

Table 3.

Output function accuracy

Ideal

Nominal

Input Code

0

0.176

0

45

45.176

128

90

90.176

256

135

135.176

384

180

180.176

512

225

225.176

640

270

270.176

768

360

359.820

1023

N = Binary Input Code

Equation for Output Angle (

θ) vs Output Voltage

Quadrant

Equation

I

θ = tan–1 | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |

II

θ = 180° +tan–1 | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |

III

θ = 180° +tan–1 | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |

IV

θ = 360° +tan–1 | [(SIN+) – (SIN–)] / [(COS+) – (COS–)] |

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