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Rev.2.1_00
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
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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.
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BIPOLAR DETECTION TYPE HALL IC WITH POWER-DOWN FUNCTION
S-5721A/5722A Series
Rev.2.1_00
„ Block Diagrams
1. CMOS output product
VDD
CE
VSS
*1
Power-down circuit
*1 *1
Sleep/Awake logic
Chopping
stabilized amplifier
*1
OUT
*1
*1. Parasitic diode
2. Nch open drain output product
Figure 1
VDD
CE
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VSS
*1
Power-down circuit
*1 *1
Sleep/Awake logic
Chopping
stabilized amplifier
*1. Parasitic diode
Figure 2
OUT
*1
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BIPOLAR DETECTION TYPE HALL IC WITH POWER-DOWN FUNCTION
Rev.2.1_00
S-5721A/5722A Series
„ Product Name Structure
1. Product name
S-572 x A x B x – I4T1 G
Package name (abbreviation) and packing specifications*1
I4T1 : SNT-4A, Tape
Detection logic for magnetism
H : Level “H” at S pole detection
L : Level “L” at S pole detection
Pole detection
B : Bipolar detection
Output form
C : CMOS output
N : Nch open drain output
Product type
1 : Low current consumption
2 : Fast operation
*1. Refer to the tape specifications at the end of this book.
2. Product name list
Table 1
Product Type
Output Form
Pole Detection Detection Logic for Magnetism Product Name
Low current consumption CMOS output
Bipolar detection Level “H” at S pole detection S-5721ACBH-I4T1G
Low current consumption Nch open drain output Bipolar detection Level “H” at S pole detection S-5721ANBH-I4T1G
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CMOS output
Bipolar detection Level “H” at S pole detection S-5722ACBH-I4T1G
Remark Please contact our sales office for products other than the above.
Seiko Instruments Inc.
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BIPOLAR DETECTION TYPE HALL IC WITH POWER-DOWN FUNCTION
S-5721A/5722A Series
Rev.2.1_00
„ Pin Configurations
SNT-4A
Top view
14
23
Pin No.
1
2
3
4
Table 2
Symbol
VDD
VSS
CE
OUT
Pin Description
Power supply pin
GND pin
Enabling pin
“H” : Enables operation
“L” : Power-down
Output pin
Figure 3
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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
VSS0.3 to VSS+7.0
VSS0.3 to VDD+0.3
VSS0.3 to VDD+0.3
VSS0.3 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