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Número de pieza | S-5722A | |
Descripción | (S-5721A / S-5722A) BIPOLAR DETECTION TYPE HALL IC | |
Fabricantes | Seiko Instruments | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de S-5722A (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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BIPOLAR DETECTION TYPE HALL IC WITH
POWER-DOWN FUNCTION
S-5721A/5722A Series
The S-5721A/5722A Series, developed using CMOS technology, is a
bipolar detection type Hall IC with a high-sensitivity that operates on a low
current.
The output voltage changes when the S-5721A/5722A Series detects the
intensity level of flux density and a polarity change. Using the S-
5721A/5722A Series with a magnet makes it possible to detect rotation in
various devices.
High-density mounting is possible by using the super-small SNT-4A
package. Also, the S-5721A/5722A Series is the most suitable for portable
devices due to the included power-down circuit.
Features
• Built-in chopping stabilized amplifier
• Detection of bipolar magnetic fields
• Applicable in various devices with wide range of option
Detection logic for magnetism : Level “H” at S pole detection, level “L” at S pole detection
Output types :
CMOS output, Nch open drain output
• Wide power supply voltage range : 2.4 V to 5.5 V
• Low current consumption :
80 µA typ., 120 µA max. (S-5721A Series)
• High speed detection :
Operating cycle 132 µs typ., 240 µs max. (S-5722A Series)
• Built-in power-down circuit :
Extends battery life
In the power-down mode 1.0 µA max.
• Operating temperature range :
−40°C to +85°C
Small dependency magnetic characteristics against temperature
• Small package :
SNT-4A
• Lead-free product
www.DataAShpepetl4iUc.acotmions
• Jog dials, wheel keys
• Trackballs, mouse devices
• Operation keys
• Playthings, portable games
• Home appliances
Package
Package Name
SNT-4A
Package
PF004-A
Drawing Code
Tape
Reel
PF004-A
PF004-A
Land
PF004-A
Seiko Instruments Inc.
1
1 page BIPOLAR DETECTION TYPE HALL IC WITH POWER-DOWN FUNCTION
Rev.2.1_00
S-5721A/5722A Series
Absolute Maximum Ratings
Table 3
(Ta = 25°C unless otherwise specified)
Item
Symbol
Absolute Maximum Rating
Unit
Power supply voltage
Input voltage
Output
voltage
CMOS output
Nch open drain output
Power dissipation
VDD
VCE
VOUT
PD
VSS−0.3 to VSS+7.0
VSS−0.3 to VDD+0.3
VSS−0.3 to VDD+0.3
VSS−0.3 to VSS+7.0
300*1
V
V
V
V
mW
Operating ambient temperature
Topr
−40 to +85
°C
Storage temperature
Tstg
−40 to +125
°C
*1. When mounted on board
[Mounted board]
(1) Board size :
114.3 mm × 76.2 mm × t1.6 mm
(2) Name :
JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
600
400
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200
0
0 50 100 150
Ambient Temperature (Ta) [°C]
Figure 4 Power Dissipation of Package (When Mounted on Board)
Seiko Instruments Inc.
5
5 Page BIPOLAR DETECTION TYPE HALL IC WITH POWER-DOWN FUNCTION
Rev.2.1_00
S-5721A/5722A Series
2. Basic operation
The S-5721A/5722A Series changes the output voltage (VOUT) according to the level of the magnetic flux density (N or
S pole) applied by a magnet.
The following explains the operation when the magnetism detection logic is “H” at S pole detection.
When the magnetic flux density of the S pole perpendicular to the marking surface exceeds BOP after the S pole of a
magnet is moved closer to the marking surface of the S-5721A/5722A Series, VOUT changes from “L” to “H”. When the
N pole of a magnet is moved closer to the marking surface of the S-5721A/5722A Series and the magnetic flux density
of the N pole is higher than BRP, VOUT changes from “H” to “L”. While the magnetic field is not applied, VOUT retains the
state.
VOUT also retains the state when “L” is applied to an enabling pin and the IC is powered down.
When the power is turned on, the output voltage (VOUT) is “H” or “L”.
Definition of the magnetic field is performed every operating cycle indicated in “ Electrical Characteristics”.
Figure 14 shows the relationship between the magnetic flux density and VOUT.
(1) Products level “H” at S pole detection
VOUT
BHYS
H
N pole
BRP 0
BOP
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Flux density (B)
(2) Products level “L” at S pole detection
VOUT
BHYS
L
S pole
H
N pole
BRP 0
BOP
Flux density (B)
Figure 14
Seiko Instruments Inc.
L
S pole
11
11 Page |
Páginas | Total 18 Páginas | |
PDF Descargar | [ Datasheet S-5722A.PDF ] |
Número de pieza | Descripción | Fabricantes |
S-5722A | (S-5721A / S-5722A) BIPOLAR DETECTION TYPE HALL IC | Seiko Instruments |
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