NJRC NJM2650

NJM2650
HALL AMPLIFIER IC
■GENERAL DESCRIPTION
The NJM2650 is a dual hall amplifier IC for converting
signals from hall sensors to digital signals.
It is suitable for speed and position sensing of motor
control system using DSP or micro controllers.
The NJM2650 can turn off the amplifier block and bias
supply of hall device at the standby. Therefore, the
consumption current of the application can be reduced.
■FEATURES
•Position Sensing Output
•Chip Enable
•Hall Bias Stand-By Function
•Open Collector Output
•Bipolar Technology
•Package Outline
■PACKAGE OUTLINE
NJM2650V
SSOP10
■PIN CONFIGURATION
1
10
2
9
3
8
4
7
5
6
NJM2650V
PIN Function
1. A +INPUT
2. A -INPUT
3. OUT1
4. HBIAS
5. GND
6. STBY
7. OUT2
8. B -INPUT
9. B +INPUT
10. V+
Ver 1.1 - 1 -
NJM2650
■BLOCK DIAGRAM
V+
B +INPUT
B -INPUT
OUT2
STBY
10
9
8
7
6
V+
B
IC/Hall bias
STAND-BY
ENCODER
A
1
2
3
4
5
A +INPUT
A -INPUT
OUT1
HBIAS
GND
■ABSOLUTE MAXIMUM RATINGS (Ta=25°C )
PARAMETER
SYMBOL
Maximum Supply Voltage
V+
Output Voltage
VOUT
Output Current
IOUT
Hall Bias Current
IOBIAS
Stand-By Terminal
VOUT
Differential Input Voltage
VID
Input Voltage
VIC
Power Dissipation
PD
Operating Temperature Range
Topr
Storage Temperature Range
Tstg
Output to GND in internal diode for ESD.
Output voltage is below to IC supply voltage.
-2-
RATINGS
20
V+
7
20
V+
V+
-0.3 ∼ V+-1.5
SSOP10
250
-40 ∼ +85
-50 ∼ +150
UNIT
V
V
mA
mA
V
V
V
mW
°C
°C
NJM2650
■ELECTRICAL CHARACTERISTICS (V+=5V, VSTBY=5V, Ta=25°C)
Total Device
PARAMETER
Supply Voltage
Supply Current 1
Supply Current 2
Hall Amplifier Section
PARAMETER
Input Offset Voltage
Input Common Mode
Voltage Range
Input Bias Current
SYMBOL
TEST CONDITION
V+
ICC1
RL=∞
ICC2
VSTBY=0V
MIN.
4.5
–
–
TYP.
–
2
30
MAX.
18
4
60
UNIT
V
mA
µA
SYMBOL
VIO
VICM
MIN.
-4.2
1.5
TYP.
–
–
MAX.
4.2
3.5
UNIT
mV
V
–
–
600
nA
MIN.
–
TYP.
0.1
MAX.
0.3
UNIT
V
–
–
5
µA
MIN.
–
TYP.
0.2
MAX.
0.5
UNIT
V
–
–
5
µA
MIN.
–
2.4
–
TYP.
–
–
1
MAX.
0.4
–
20
UNIT
V
V
µA
TEST CONDITION
IB
Hall Bias Block Section
PARAMETER
SYMBOL
TEST CONDITION
Low Level Output Voltage
VOLBIAS
ISINK=10mA
(HBIAS Pin)
Output Leak Current
ILEAK(HBIAS) VOUT=5V
(HBIAS Pin)
Output Section
PARAMETER
SYMBOL
TEST CONDITION
ISINK=5mA
Low Level Output Voltage
VOL1
(OUT1,OUT2 Pin) VOL2
Output Leak Current
ILEAK(OUT)
VOUT=5V
(OUT1,OUT2 Pin)
Stand-By Section (Low Level Stand-By)
PARAMETER
SYMBOL
Input Low Level Voltage
VIL(STBY)
Input High Level Voltage
VIH(STBY)
Input Bias Current
ISTBY
TEST CONDITION
-3-
NJM2650
■TYPICAL APPLICATIONS
V+
STAND-BY Signal
Low Level STAND-BY
22kΩ
10
9
8
22kΩ
7
6
V+
B
IC/Hall bias
STAND-BY
ENCODER
Hall Sensor
A
1
■TIMING CHART
Hall Sensor A
Hall Sensor B
A Phase
Output
B Phase
Output
-4-
2
3
4
5
Micro Controller
or DSP
for power supply
Micro Controller
or DSP for I/O
NJM2650
■TYPICAL CHARACTERISTICS
Low Level Output Voltage vs. Sink Current
(HBIAS Pin,V+=5V,Ta=25°C)
0.2
Low Level Output Voltage
VOLBIAS (V)
Low Level Output Voltage
VOL1 ,VOL2 (V)
0.5
Low Level Output Voltage vs. Sink Current
(OUT1,OUT2 Pin,V+=5V,Ta=25°C)
0.4
0.3
0.2
0.1
0.15
0.1
0.05
0
0
0
4
6
8
10
10
15
20
Sink Current ISINK (mA)
Supply Current 1 vs. Supply Voltage
(RL=∞,Ta=25°C)
Supply Current 2 vs. Supply Voltage
(VSTBY=0V,Ta=25°C)
160
2
1.5
1
0.5
0
120
80
40
0
0
5
10
15
20
+
0
5
10
15
20
+
Supply Voltage V (V)
Supply Current I CC (mA)
5
Sink Current ISINK (mA)
2.5
2.5
0
Supply Current 2 ICC2 (µA)
Supply Current1 ICC1 (mA)
3
2
Supply Voltage V (V)
Supply Current vs. Stand-By Input Voltage
(V+=5V,RL=∞,Ta=25°C)
2
1.5
1
0.5
0
0
0.5
1
1.5
2
2.5
3
Stand-By Input Voltage VSTBY (V)
-5-
NJM2650
■TYPICAL CHARACTERISTICS
3
80
Supply Current 2 ICC2 (µA)
Supply Current 1 ICC1 (mA)
Suuply Current 1 vs. Temperature
(V+=5V,RL=∞)
2.5
2
1.5
1
0.5
60
40
20
0
0
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
-50 -25 0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Low Level Output Voltage vs. Temperature
(OUT1,OUT2 Pin,V+=5V)
0.3
Low Level Output Voltage vs. Temperature
(HBIAS Pin,V+=5V)
80
Low Level Output Voltage
VOLBIAS (mV)
Low Level Output Voltage
VOL1 ,VOL2 (V)
Supply Current 2 vs. Temperature
(V+=5V,VSTBY=0V)
0.25
60
0.2
0.15
40
0.1
20
0.05
0
0
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
-6-