ADNS-3050 optical navigation sensor connection guide

ADNS-3050 optical navigation sensor Optical DIP-8 wiring guide with power, signal assignments, and bench checks.

Optical DIP-8

8 contacts Current package

Avago Technologies ·

Bring up the SPI and motion interface

Required

Use a regulated 2.8 V sensor supply and a host or logic translator with compatible thresholds. Fit the red LED, lens and clip using Avago’s optical design. Build the LED supply branch directly from Figure 8 or 9 for the chosen assembly.

+2.8 V
- VDD (7)
- Regulated sensor supply
- C1.1
Ground
- GND (6)
- Host ground
- C1.2
Chip select
- NCS (4)
- Host chip select
Clock
- SCLK (5)
- Host SPI clock
Host to sensor
- MOSI (8)
- Host MOSI
Sensor to host
- MISO (1)
- Host MISO
Motion interrupt
- MOTION (3)
- Host GPIO interrupt
Illumination control
- LED (2)
- Figure 8 or 9 LED branch

Bench checks

Drive NCS high then low to reset the serial port. Write 0x5A to 0x3A, wait for the documented write-to-write interval, and write 0x20 to 0x0D and 0x00 to 0x41 with the same timing.
Wait at least 50 ms from reset before evaluating motion. Move the assembly over a matte surface and read DELTA_X and DELTA_Y consecutively when MOTION is low.

Avago AV02-2886EN (July 2011), Figures 1, 8–9, Tables 2–4 and power-up reset procedure. Manufacturer PDF hosted by DigiKey.

Optical DIP-8 wiring map

Highlighted contacts are used in the required step or selected circuit. Select a contact to inspect it.

Top view as in Figure 1. Locate pin 1 at the lower left beside the index mark.

Selected pin details

2 · LED

LED control · Control

Connect to the external illumination circuit in the manufacturer reference design.

Avago AV02-2886EN (July 2011), Figures 1, 8–9, Tables 2–4 and power-up reset procedure. Manufacturer PDF hosted by DigiKey.

Electrical limits · Pin in the reference

Models and documents

The map follows the 8-pin DIP optical sensor and Avago’s HLMP-EG3E red LED design.

ADNS-3050: 8-pin optical package for the compatible lens and clip.

ADNS-3050 manufacturer documentation· Avago AV02-2886EN (July 2011), Figures 1, 8–9, Tables 2–4 and power-up reset procedure. Manufacturer PDF hosted by DigiKey.