NJM2650
HALL AMPLIFIER IC
sGENERAL
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.
sPACKAGE
OUTLINE
NJM2650V
sFEATURES
•Position
Sensing Output
•Chip
Enable
•Hall
Bias Stand-By Function
•Open
Collector Output
•Bipolar
Technology
•Package
Outline
SSOP10
sPIN
CONFIGURATION
1
2
3
4
5
10
9
8
7
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
sBLOCK
DIAGRAM
V
+
10
B +INPUT
9
B -INPUT
8
OUT2
7
STBY
6
V
+
B
ENCODER
A
IC/Hall bias
STAND-BY
1
A +INPUT
2
A -INPUT
3
OUT1
4
HBIAS
5
GND
sABSOLUTE
MAXIMUM RATINGS (Ta=25°C )
PARAMETER
SYMBOL
Maximum Supply Voltage
V
+
Output Voltage
V
OUT
Output Current
I
OUT
Hall Bias Current
I
OBIAS
Stand-By Terminal
V
OUT
Differential Input Voltage
V
ID
Input Voltage
V
IC
Power Dissipation
P
D
Operating Temperature Range
Topr
Storage Temperature Range
Tstg
Output to GND in internal diode for ESD.
Output voltage is below to IC supply voltage.
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
-2-
NJM2650
sELECTRICAL
CHARACTERISTICS (V
+
=5V, V
STBY
=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
I
CC1
R
L
=∞
I
CC2
V
STBY
=0V
MIN.
4.5
–
–
TYP.
–
2
30
MAX.
18
4
60
UNIT
V
mA
µA
SYMBOL
V
IO
V
ICM
I
B
TEST CONDITION
MIN.
-4.2
1.5
–
TYP.
–
–
–
MAX.
4.2
3.5
600
UNIT
mV
V
nA
Hall Bias Block Section
PARAMETER
SYMBOL
TEST CONDITION
Low Level Output Voltage
V
OLBIAS
I
SINK
=10mA
(HBIAS Pin)
Output Leak Current
I
LEAK(HBIAS)
V
OUT
=5V
(HBIAS Pin)
Output Section
PARAMETER
SYMBOL
TEST CONDITION
I
SINK
=5mA
Low Level Output Voltage
V
OL1
(OUT1,OUT2 Pin) V
OL2
Output Leak Current
I
LEAK(OUT)
V
OUT
=5V
(OUT1,OUT2 Pin)
Stand-By Section (Low Level Stand-By)
PARAMETER
SYMBOL
Input Low Level Voltage
V
IL(STBY)
Input High Level Voltage
V
IH(STBY)
Input Bias Current
I
STBY
MIN.
–
–
TYP.
0.1
–
MAX.
0.3
5
UNIT
V
µA
MIN.
–
–
TYP.
0.2
–
MAX.
0.5
5
UNIT
V
µA
TEST CONDITION
MIN.
–
2.4
–
TYP.
–
–
1
MAX.
0.4
–
20
UNIT
V
V
µA
-3-
NJM2650
sTYPICAL
APPLICATIONS
V
+
STAND-BY Signal
Low Level STAND-BY
Micro Controller
or DSP
for power supply
Micro Controller
or DSP for I/O
22kΩ
22kΩ
10
9
8
7
6
V
+
B
ENCODER
Hall Sensor
A
IC/Hall bias
STAND-BY
1
2
3
4
5
sTIMING
CHART
Hall Sensor A
Hall Sensor B
A Phase
Output
B Phase
Output
-4-
NJM2650
sTYPICAL
CHARACTERISTICS
0.5
Low Level Output Voltage
V
OL1
,V
OL2
(V)
0.4
0.3
0.2
0.1
0
Low Level Output Voltage vs. Sink Current
(OUT1,OUT2 Pin,V
+
=5V,Ta=25°C)
Low Level Output Voltage vs. Sink Current
(HBIAS Pin,V
+
=5V,Ta=25°C)
0.2
Low Level Output Voltage
V
OLBIAS
(V)
0.15
0.1
0.05
0
0
2
4
6
8
10
0
5
10
15
20
Sink Current I
SINK
(mA)
Supply Current 1 vs. Supply Voltage
(R
L
=∞,Ta=25°C)
Supply Current 2 I
CC2
(µA)
Sink Current I
SINK
(mA)
Supply Current 2 vs. Supply Voltage
(V
STBY
=0V,Ta=25°C)
160
3
Supply Current1 I
CC1
(mA)
2.5
2
1.5
1
0.5
0
0
120
80
40
0
5
10
15
20
0
5
10
15
20
Supply Voltage V
+
(V)
Supply Current vs. Stand-By Input Voltage
(V
+
=5V,R
L
=∞,Ta=25°C)
Supply Voltage V
+
(V)
2.5
Supply Current I
CC
(mA)
2
1.5
1
0.5
0
0
0.5
1
1.5
2
2.5
3
Stand-By Input Voltage V
STBY
(V)
-5-
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