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PDF ADBM-A350 Data sheet ( Hoja de datos )
| Número de pieza | ADBM-A350 | |
| Descripción | Optical Finger Navigation | |
| Fabricantes | PixArt | |
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Data Sheet
ADBM-A350
Optical Finger Navigation
Description
The ADBM-A350 sensor is a small form factor (SFF) optical
finger navigation system.
The ADBM-A350 is a low- power optical finger naviga-
tion sensor. It has a new, low-power architecture and
automatic power management modes, making it ideal for
battery-and power-sensitive applications such as mobile
phones.
The ADBM-A350 is capable of high-speed motion
detection – up to 20ips. In addition, it has an on-chip
oscillator and integrated LED for optical navigation to
minimize external components.
There are no moving parts, thus provide high reliabil-
ity and less maintenance for the end user. In addition,
precision optical alignment is not required, facilitating
high volume assembly.
The sensor is programmed via registers through either a
serial peripheral interface or a two wire interface port. It is
packaged into a 17-pin FPC module for ease of assembly
via ZIF connector.
Theory of Operation
The ADBM-A350 is based on Optical Finger Navigation
(OFN) Technology, which measures changes in position by
optically acquiring sequential surface images (frames) and
mathematically determining the direction and magnitude
of movement.
The ADBM-A350 contains an Image Acquisition System
(IAS), a Digital Signal Processor (DSP), and a communica-
tion system.
The IAS acquires microscopic surface images via the lens
and illumination system. These images are processed
by the DSP to determine the direction and distance of
motion. The DSP calculates the Δx and Δy relative dis-
placement values.
The host reads the Δx and Δy information from the sensor
serial port if a motion interrupt is published. The micro-
controller then translates the data into cursor navigation,
rocker switch, scrolling or other system dependent navi-
gation data.
Features
Low power architecture
Self-adjusting power-saving modes for longer battery
life
High speed motion detection up to 20ips
Self-adjusting frame rate for optimum performance
Motion detect interrupt
Finger detect interrupt
Soft click and Tap detect interrupt
Single Interrupt pin
Optional PWM output to control LED driver to enable il-
lumination feature when finger is on the sensor
Optional switch input for center click function
Internal oscillator – no clock input needed
Selectable 125, 250, 500, 750, 1000 and 1250 cpi
resolution
Single 1.8V supply voltage for analog and digital
Internal power up reset (POR)
Selectable Input/Output voltage at 1.8V or 2.8V
nominal
4-wire Serial peripheral interface (SPI) or Two wire in-
terface (TWI)
Integrated chip-on-board LED with wavelength of
870nm
17-pin FPC module
Applications
Finger input devices
Mobile devices
Integrated input devices
Battery-powered input device
PixArt customers purchasing the ADBM-350 OFN
product are eligible to receive a royalty free license
to our US patents 6977645, 6621483, 6950094,
6172354 and 7289649, for use in their end products.
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.
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
E-mail: [email protected]
1 page  
PixArt Imaging Inc.
ADBM-A350 Optical Finger Navigation
Regulatory Requirements
Passes FCC or CISPR 22 Class B emission limits when assembled following PixArt imaging recommendations.
Passes IEC 61000-4-3 and IEC61000-4-6 Class A Immunity limits when assembled following PixArt Imaging
recommendations.
Absolute Maximum Ratings
Parameter
Symbol Minimum Maximum
Units Notes
Storage Temperature
Analog and Digital Supply Voltage
TS
VDD
-40
-0.5
85
2.1
°C
V
I/O Supply Voltage
ESD (sensor only)
VDDIO
-0.5
3.7
2
V
kV All pins, human body model
JESD22-A114-E
Input Voltage
Latchup Current
VIN
-0.5
VDD+0.5
V
VDDIO+0.5
Iout 20 mA All Pins
Note: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are the stress ratings
only and functional operation of the device at these or any other condition beyond those indicated may affect device reliability.
Recommended Operating Conditions
Parameter
Operating Temperature
Analog and Digital
Supply Voltage [1]
I/O Supply Voltage [2]
Symbol
TA
VDD
VDDIO
Power Supply Rise Time
Power Supply Off Time for
Valid POR (Power on Reset)
Power Off Voltage Level for
Valid POR (Power on Reset)
Supply Noise (Sinusoidal)
Speed
Transient Supply Current
tVRT
tOFF
VOFF
VNA
S
IDDT
Minimum
-20
1.7
Typical
1.8
Maximum
70
2.1
Units
°C
Volts
1.65 1.8 or 2.8 3.6
Volts
0.001
10
10 ms
ms
0 300 mV
100 mV p-p
20 in/sec
80 mA
Notes:
1. Operating temperature of less than -20°C down to -30°C, minimum VDD of 1.8V must be met.
2. To ensure minimum leakage current, VDDIO should be greater than or equal to VDD
Notes
Including VNA noise.
Including VNA noise. Sets I/O
voltages. See fig 7.
0 to VDD. At minimum rise time, s/’
Refer to section “POR During Power
Cycling”
Refer to section “POR During Power
Cycling”
10 kHz - 50 MHz
Using prosthetic finger as surface
Max supply current for 500 sec
for each supply voltages ramp from
0 to 1.8 V
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
E-mail: [email protected]
5
5 Page 
PixArt Imaging Inc.
DͲϯϱϬKƉƚŝĐĂů&ŝŶŐĞƌEĂǀŝŐĂƚŝŽŶ
Pixel byte format
Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit1
D7 D6 D5 D4 D3 D2 D1 D0
Below is the pixel array address map. The figure shows the
view of the chip from the top of the OFN aperture. Rows
are read from top to bottom and columns from left to
right.
The signal to indicate the end of the JNBHF dump frame is
shown in Figure 10 below where pix end state is followed
by a low in both MISO_SDA and EVENT_INT. This will
inform the Host of the pixel end and frame end state.
Pin 1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94
95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113
114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132
133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151
152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189
190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208
209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246
247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265
266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284
285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303
304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322
323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341
342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360
Pin 18
Figure 5. Frame End
Note: It is advisable to have a counter at the Host to keep count of the number of pixel addresses and data byte. If the number of pixel data byte does
not correspond to the sensor number of pixel then this JNBHFdump data is invalid. In this case the sensor must be reset and a new JNBHF dump must
be initiated.
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
E-mail: [email protected]
11
11 Page | ||
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| PDF Descargar | [ Datasheet ADBM-A350.PDF ] | |
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