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PDF CXA3271GE Data sheet ( Hoja de datos )
| Número de pieza | CXA3271GE | |
| Descripción | Fingerprint Sensor | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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Fingerprint Sensor
CXA3271GE
Description
The CXA3271GE is an electrostatic capacitance
method fingerprint sensor.
This monolithic IC integrates the sensor block, sense
amplifier (3-bit gain adjustment), sample-and-hold,
output amplifier and output buffer needed to acquire
fingerprint images, as well as the timing generator for
determining the operation of these functions onto a
single chip.
30 pin LLGA
Features
• Electrostatic capacitance type sensor (charge transfer method)
• Number of pixels: 192 × 128
• 317 DPI
• Low power consumption (50mW or less)
• Single 3.3V power supply
• Sensor gain control: 3 bits
• S/N ratio improved by on-chip sensor block parasitic capacitance cancel function
Applications
Fingerprint verification units
Structure
Silicon gate CMOS IC
Absolute Maximum Ratings
• Supply voltage
• Input voltage
• Output voltage
• Operating temperature
• Storage temperature
• Allowable power dissipation
VDD
VI
VO
Topr
Tstg
PD
VSS – 0.5 to +7.0
V
VSS – 0.5 to VDD + 0.5 V
VSS – 0.5 to VDD + 0.5 V
–20 to +75
°C
–25 to +125
°C
970 mW
Operating Conditions
• Supply voltage
• Recommended operating temperature
3.15 to 3.45
0 to +50
V
°C
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E00235-PS
1 page  
CXA3271GE
Electrical Characteristics
1. DC Characteristics
(Topr = 25°C, Vss = 0V)
Item
Symbol
Conditions
Min. Typ. Max. Unit
Analog supply voltage
AVDD
3.15 3.3 3.45 V
Digital supply voltage
DVDD
3.15 3.3 3.45 V
Input voltage (High)
VIH CMOS input cell
0.7VDD
VDD
V
Input voltage (Low)
VIL CMOS input cell
Vss 0.3VDD V
Output voltage (High) CMOS VIH
VDD = 3.3V, IOH = –800µA
2.8
3.3 V
Output voltage (Low) CMOS VIL
VDD = 3.3V, IOL = 2.4mA
0
0.4 V
Input leak current
IL CMOS input pin
–5 5 µA
Output voltage
VH VDD = 3.3V (D0 D1 D2) = (L L L)
1.92
V
Output voltage
VH VDD = 3.3V (D0 D1 D2) = (H H H)
2.48
V
Output voltage
VL VDD = 3.3V (D0 D1 D2) = (L L L)
1.76
V
Output voltage
VL VDD = 3.3V (D0 D1 D2) = (H H H)
1.2
V
Output voltage
VM VDD = 3.3V (D0 D1 D2) = (∗ ∗ ∗) 1.75 1.84 1.92 V
Output voltage
VOS VDD = 3.3V (D0 D1 D2) = (∗ ∗ ∗) 1.55 1.65 1.75 V
Current consumption
IDD VDD = 3.3V
4 10 14 mA
2. AC Characteristics
(Topr = 25°C, Vss = 3.3V)
Item
Applicable pins
Symbol Conditions Min. Typ. Max. Unit
Clock input period
Output rise delay time
Output fall delay time
CLK
C_CK, ADCLK, RSRO, CSRO
C_CK, ADCLK, RSRO, CSRO
tpr
tpf
400
CL = 30pF
CL = 30pF
ns
160 ns
200 ns
Number of sensor defects
Output voltage Air Level AOUT
Output voltage Water Level AOUT
5 Sensors
∗1 600 1300 mV
∗2 200
mV
Timing Definition
CLK
Output
tpr
tpf
–5–
VDD
0V
VDD
0V
VDD
0V
5 Page 
Appearance and Readout Order
15.36mm
CXA3271GE
10.24mm
Cell (1, 1)
Cell (128, 1)
Sensor Area
192 × 128
Cell (1, 192)
Cell (128, 192)
Scan Formation
Cell (1, 1) to Cell (1, 192)
16.8mm
Cell (128, 1) to
Cell (128, 192)
19.8mm
G
F
E
D
C
B
A
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| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet CXA3271GE.PDF ] | |
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