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ADNS-7700 Schematic ( PDF Datasheet ) - AVAGO

Teilenummer ADNS-7700
Beschreibung Mouse Sensors
Hersteller AVAGO
Logo AVAGO Logo 




Gesamt 30 Seiten
ADNS-7700 Datasheet, Funktion
ADNS-7700
One chip USB LaserStream™ Mouse Sensors
Data Sheet
Description
The ADNS-7700 series are compact, low cost, one chip USB
LaserStreamTM mouse sensors designed for implemention
of a non-mechanical tracking engine in computer mice.
This ADNS-7700 sensor is a 22-pin integrated molded
lead-frame DIP package. It comprises a USB controller
and LaserStream navigation sensor with VCSEL integrated
within a single package. It is designed to be used with the
ADNS-6180-001 trim lens or ADNS-6180-002 wide trim
lens to achieve the LaserStream performance featured
in this document. These parts provide a complete and
compact navigation system with no moving parts and
precision optical alignment to facilitate high volume as-
sembly. Avago has pre-calibrated the laser power prior
shipment, thus NO laser power calibration is required at
manufacturer site, therefore reducing assembly time and
associated cost.
The motion output is a selectable 8/12/16-bit USB data re-
porting format. This device is compliant to USB Revision
2.0 low speed specification. The ADNS-7700 series are
designed with on-chip One-Time-Programmable (OTP)
memory. This enables device configuration flexibility for
the manufacturer to cater for various market segments.
Theory of Operation
The ADNS-7700 is based on Laser-Stream navigation tech-
nology that measures changes in position by optically ac-
quiring sequential surface images (per frames) and math-
ematically determining the direction and magnitude of
motion movement.
It contains an Image Acquisition System (IAS), a Digital
Signal Processor (DSP) and USB stream output. The IAS
acquires microscopic surface images via the lens. These
images are processed by the DSP to determine the direc-
tion and distance of motion. The DSP generates the x
and y relative displacement values which are converted
to USB motion data.
Features
 One chip USB laser mouse sensor with VCSEL integrated
in single package
 LaserStream™ navigation technology
 USB 2.0 Low Speed Compliance
 Meets HID Revision 1.11
 Single 5.0 volts power supply
 Compliance to IEC/EN 60825-1 Class 1 Eye Safety
– Pre-calibrated laser power prior shipment
– Class 1 eye safety AEL
– On-chip Laser fault detect circuitry
 High speed motion detection at 45 inches per second
(ips) and acceleration up to 20g
 Input buttons: 3 or 5-buttons
 Mechanical Z-Wheel interface for vertical scroll
 On-chip OTP memory for device configuration
flexibility without any external software driver:
– Enable/Disable Tilt-Wheel* function that supports
horizontal scroll in Microsoft Vista OS.
– 8/12/16-bit USB motion data reporting
– Resolution
Programmable from 400-2400 counts per inch (cpi)
with ~100cpi incremental step
3 selections of On-the-Fly (OTF) resolution mode
setting
 KeyMap (KM) for keyboard shortcut key
 Customizable VID, PID, Manufacturer string and
Product string
 4-axis sensor rotations: 0°, 90°, 180° or 270°
Applications
 Corded laser mice
 Integrated input devices
* Disclaimer: All designers and manufacturers of this design must assure
that they have all necessary intellectual property rights






ADNS-7700 Datasheet, Funktion
Assembly Drawings
Guide post B
BB
Guide post A
7.40 Top of PCB to Surface
0.291
2.40 Z, Lens reference plane to Surface, typical
0.094
1.60 PCB Thickness
0.063
30 ~ 30 ~
Navigation Surface
SECTION B-B
Figure 3. 2D assembly drawing of ADNS-7700 sensor coupled with ADNS-6180-002 lens, PCB & base plate
9.05
0.356
Top of sensor to Surface
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ADNS-7700 pdf, datenblatt
Recommended Operating Conditions
Parameter
Symbol
Operating Temperature
Power Supply Voltage
TA
VDD
Power Supply Rise Time
Power Supply Noise
VRT
VN
Velocity
Acceleration
Clock Frequency
Resonator Impedance
Distance from lens reference
plane to surface
Frame Rate
VCSEL’s Peak Wavelength
Vel
Acc
fclk
XRES
Z
Minimum
0
4.4
Typical
5.0
0.1
23.64
2.18
832
45
24.00
2.40
8000
Maximum
40
5.25
Units
°C
Volts
100 ms
100 mVp-p
20
24.36
55
2.62
ips
g
MHz
mm
fps
865 nm
Notes
For accurate navigation and
proper USB operation
Peak to peak within
50kHz-100MHz bandwidth
In Run Mode only
Due to USB timing constraints
See Figure 9
Internally adjusted by sensor
Z
Figure 9. Distance from lens reference plane to object surface, Z
AC Electrical Specifications
Electrical Characteristics over recommended operating conditions. Typical values at 25°C, VDD=5.0 V.
Parameter
Wakeup delay from rest
mode due to motion
Power up delay
Debounce delay on button
inputs
Z-Wheel sampling period
Transient Supply Current
Symbol
TWUPP
Min.
TPUP
TDBB
TSW 1.9
IDDT
Typical
Max.
2
50
69
2.0 2.8
75
Units
ms
ms
ms
ms
mA
Notes
Delay measured from VBUS=4.4V
ZA & ZB Pins
Max supply current during a VDD ramp
from 0 to 5.0 V with > 500s rise time.
Does not include charging currents for
bypass capacitors.
12

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