rms =

y

+ y

+ . . . + y

1

2

N

2

2

2

N

½

TALP1000B

ELECTRO/MECHANICAL CHARACTERISTICS

over operating supply voltage and operating temperature ranges (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Typical power supply rejection of position sensor

4.8

5.2

V

detectors is >50 dB, 20 kHz to 50 kHz.

Power dissipation

At maximum angle for both axes, includes position

700

feedback and coil drive. 0.65 to 10 micron wavelength

mW

range

Mechanical rotation

Applies to both axes, each axis independent, angle

relative to plane determined by mirror-side mounting

0

±5

deg

positions, over the entire temperature range.

Mirror resonance

Measured at 25°C and 0 degree rotation

112

152

Hz

frequency

Gimbals resonance

Measured at 25°C and 0 degree rotation

100

140

Hz

frequency

Resonance frequency

variation over operating

10

Hz

temperature range

Resonance frequency

variation over rotation

8

Hz

range–each axis

Mirror mechanical Q

Measured by fitting exponential decay after removing

100

2-mA current pulse. Quiescent angle, 25°C

Coil current at maximum

Over the entire temperature range

20

65

mA

rotation

Mirror drift at constant coil

Mirror position is stable to within 5% of full angular

current

range (0.5°) over time and operating temperature

5%

range.

Coil drive linearity

Difference between a mirror angle at a given current,

and the angle predicted by a linear fit to angle versus

0.4

deg

current over the range of ±5 degrees at 25°C

Coil resistance: each axis

Measured at 25°C, coils use copper wire with

61

71

Ω

Quiescent angle: mirror

Angle relative to plane determined by mirror-side

±0.3

deg

side

mounting positions, over the entire temperature range

Quiescent angle: coil side

Angle relative to plane determined by coil-side

±0.5

deg

mounting positions, over the entire temperature range

Mirror crosstalk

Off-axis rotation induced by on-axis actuation relative

5%

to axes determined by mirror mounting positions

Mirror curvature radius

Over the entire temperature range

5

m

Mirror reflectivity

Over the entire temperature range

95%

Displacement of optical

surface from axis of

65

μm

rotation

Mirror surface roughness

Measured over a 0.5 mm square window.

200

nm

and N is the number of discrete elements.

Particulates

3 dig surface quality. The diameter of the maximum

sized particle on the mirror must not exceed 30

μmm

(corresponding to 3 dig surface quality). The sum of

the diameters of all particles on the mirror must not

exceed twice this size. Two particles must not be

closer than 200

μm. Particles less than 5 μm are

(1)

The diameter of an irregularly shaped particle is the average of its length and width.

Copyright © 2004–2009, Texas Instruments Incorporated

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