UZZ9000 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

UZZ9000

Sensor Conditioning Electronics

Philips Electronics 

Philips Semiconductors

Sensor Conditioning Electronics

Objective specification

UZZ9000

FEATURES

• One chip angle sensor output signal conditioning

• Overall accuracy better than 1° for 100° angle range

• Temperature range from −40 to 150 °C

• Adjustable angle range

• Adjustable zero point.

DESCRIPTION

The UZZ9000 is an integrated circuit which is able to

combine two sinusoidal signals (sin and cos) into one

single linear output signal. These signals might come from

magnetoresistive sensors. In that case this function can

provide good results as the signal conditioning electronic

for angle measurement forming from the output signal of

two magnetoresistive sensors. This gives the sin (α) and

the cos (α) of the angle to be measured a linear output

characteristic for angles up to 360°. This integrated circuit

can also be used for all other applications in which the sin

and the cos of a signal have to be transferred in one output

characteristic. A typical application would be any kind of

resolver application. The two primary input signals are

converted into the digital domain, with a CORDIC

algorithm performing the arctan transformation. Since

todays applications work typically with analog output

signals (e.g. potentiometers), the resulting signal which is

transferred back to the analog domain is a ratiometric one.

This integrated circuit enables the user to set both the

angle range to be measured (Fig.3, α2 to α1) and the zero

point (Fig.3, α1) in wide ranges. These ranges are

determined by an external voltage divider.

PINNING

SYMBOL PIN

DESCRIPTION

+VO2

+VO1

VDD2

VSS

GND

GND

GND

−

GND

GND

−

VOUT

VIA2

VIA1

OFFS2

OFFS1

VDDA

VSSA

GND

GND

VDD1

−

−VO2

−VO1

1 sensor 2 positive differential input

2 sensor 1 positive differential input

3 supply voltage (digital 2)

4 ground (digital)

5 ground

6 ground

7 ground

8 note 1

9 ground

10 ground

11 note 1

12 output voltage

13 voltage input adjust 2

14 voltage input adjust 1

15 voltage input adjust sensor offset 2

16 voltage input adjust sensor offset 1

17 supply voltage (analog)

18 ground (analog)

19 ground

20 ground

21 supply voltage (digital 1)

22 note 1

23 sensor 2 negative differential input

24 sensor 1 negative differential input

Note

1. Pin to be left unconnected.

1998 May 18

2

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