Mouse Sensor. ADNB-2012 Datasheet
Optical Mouse Sensor
The ADNS-2001 is a low-cost
reflective optical sensor that
provides a non-mechanical
tracking engine for implementing a
It is based on optical navigation
technology which measures
changes in position by optically
acquiring sequential surface
images (frames) and mathematic-
ally determining the direction and
magnitude of movement. The
sensor is mounted in a plastic
optical package and designed to be
used with the HDNS-2100 (Lens),
HDNS-2200 (LED Assembly Clip)
and HLMP-ED80 (High Light
Output 639 nm LED), providing a
complete and compact tracking
engine. This optical tracking
engine has no moving parts and
requires no precision optical
alignment enabling high volume
system assembly. The ADNS-2001
offers a PS/2 or quadrature output
mode for interface flexibility.
Resolution is specified as 400 cpi
at rates of motion up to 16 inches
• Optical navigation technology
– Superior precision and smooth
navigation optimized for
desktop and portable mouse
– No mechanical moving parts,
provides high reliability and
needs no maintenance
• Complete compact 2-D motion
– Easy implementation and
– Replaces mechanical ball
system in traditional mice
• Two selectable output modes
– Two channel quadrature output
mode (X and Y direction) which
– Standard 3-button PS/2 output
• High speed motion detector
– Accurately measures up to
16 inches per second at 400 cpi
• Accurate navigation over a wide
range of surfaces
– Enables mouse to be used with
or without a mouse pad
• Power conservation mode during
• Compatible with high volume
– Requires no precision optical
– Wave solderable
• 33% faster than HDNS-2000
– 2000 fps (@ 24 MHz)
• Computer mice for desktop PCs,
workstations, and portable
• Integrated input devices
Caution: It is advised that normal static precautions be taken in handling and assembly of this component to prevent
damage and/or degradation which may be induced by ESD.
Theory of Operation
The ADNS-2001 is based on
Optical Navigation Technology. It
contains an Image Acquisition
System (IAS), Digital Signal Pro-
cessor (DSP), and a mode select-
able PS/2 or quadrature output
converter. The IAS acquires im-
ages of microscopic surface im-
ages via the lens and illumination
system provided by the HDNS-
2100, HDNS-2200, and the
HLMP-ED80. These images are
further processed by the DSP to
determine direction and distance
of motion. The DSP generates a
stream of delta x and delta y rela-
tive displacement values which
are then communicated to the
output converter. This converter
provides a PS/2 3-button output,
replacing existing mouse
microcontrollers, or two channel
quadrature output, for direct
interface to existing mouse
While the part can be run at 24
MHz in quadrature mode, 18 MHz
is recommended for PS/2 mode.
PS/2 or QUAD
Figure 1. ADNS-2001 block diagram.
1. DIMENSIONS IN MILLIMETERS (INCHES).
2. DIMENSIONAL TOLERANCE: ± 0.1 mm.
3. COPLANARITY OF LEADS: 0.1 mm.
4. LEAD PITCH TOLERANCE: ± 0.15 mm.
5. CUMULATIVE PITCH TOLERANCE: ± 0.15 mm.
6. ANGULAR TOLERANCE: ± 3.0 DEGREES.
7. MAXIMUM FLASH + 0.2 mm.
8. CHAMFER (25 DEGREES x 2) ON THE
TAPER SIDE OF THE LEAD.
Figure 2. ADNS-2001 sensor package outline drawing.