DLP4710LCFQL.B datasheet(32/45 Pages) TI2

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8 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

8.1 Application Information

The DMDs are spatial light modulators which reflect incoming light from an illumination source to one of two

directions, with the primary direction being into a projection or collection optic. Each application is derived

primarily from the optical architecture of the system and the format of the data coming into the dual DLPC3479

controllers. The new high tilt pixel in the bottom-illuminated DMD increases brightness performance and enables

a smaller system footprint for thickness constrained applications. Applications of interest include

• 3D depth capture: 3D camera, 3D reconstruction, dental scanner

• 3D machine vision: robotics, metrology, automated in-line inspection (AOI)

• 3D biometrics: facial and finger print recognition

• Integrated Display and 3D Depth Capture: Projection mapping, smart lighting, Glass-free AR Projection

• Light Exposure: Programmable spatial and temporal light exposure

DMD power-up and power-down sequencing is strictly controlled by the DLPA3000/DLPA3005. Refer to

Power Supply Recommendations for power-up and power-down specifications. To ensure reliable operation,

the DLP4710LC DMD must always be used with two DLPC3479 controllers and a DLPA3000 or DLPA3005

PMIC/LED driver.

8.2 Typical Application

A pattern-projector that can be used for high resolution 3D scan and display in 3D Scanners, Dental Scanners,

Metrology, projection mapping, etc., is a common application when using a DLP4710LC DMD and two

DLPC3479 devices. The two DLPC3479 devices in the pico-projector receive images from a multimedia front

end within the product as shown in Figure 8-1.

RESETZ

PROJ_ON

INTZ

PARKZ

1.1 V

1.8 V

VCORE

VIO

BIAS, RST, OFS

I2C

Microcontroller

Front End

MSP430

Tiva

HOST_IRQ

DLPC3479

eDRAM

VCC_FLSH

SPI_1

SPI_0

Sub-LVDS DATA (18)

CTRL

VCC_INTF

SPI

Flash

GPIO_8 (Normal Park)

TRIG_IN

3DR

TSTPT_4

GPIO_7

TRIG_OUT1

TRIG_OUT2

SPI(4)

LED_SEL(2)

Illumination

Optics

PROJ_ON

DLP4710LC

DMD

Included in DLP® Chip Set

Non-DLP components

DLPC3479

eDRAM

I2C_0

I2C_1

SPI Flash

SPI_0

Sub-LVDS DATA (18)

LS RDATA

Image

Sync

GPIO5

DLPA3000

VLED

Monochrome

Illumination

(1)

Illuminator

Current Sense

Focus stepper motor

1.1 V for DLPC3479

SYSPWR

1.8 V

VSPI

1.8 V for DMD and DLPC3479

RESETZ

INTZ

I2C

1.1 V

1.8 V

VCORE

VIO

Oscillator

VCC_INTF

VCC_FLSH

GPIO6

Figure 8-1. Typical Application Diagram

DLP4710LC

DLPS178C – MAY 2020 – REVISED JULY 2023

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