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PDF SA5230 Data sheet ( Hoja de datos )

Número de pieza SA5230
Descripción Low Voltage Operational Amplifier
Fabricantes ON Semiconductor 
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No Preview Available ! SA5230 Hoja de datos, Descripción, Manual

NE5230, SA5230, SE5230
Low Voltage Operational
Amplifier
The NE5230 is a very low voltage operational amplifier that can
perform with a voltage supply as low as 1.8 V or as high as 15 V.
In addition, split or single supplies can be used, and the output will
swing to ground when applying the latter. There is a bias adjusting pin
which controls the supply current required by the device and thereby
controls its power consumption. If the part is operated at ±0.9 V
supply voltages, the current required is only 110 mA when the current
control pin is left open. Even with this low power consumption, the
device obtains a typical unity gain bandwidth of 250 kHz. When the
bias adjusting pin is connected to the negative supply, the unity gain
bandwidth is typically 600 kHz while the supply current is increased
to 600 mA. In this mode, the part will supply full power output beyond
the audio range.
The NE5230 also has a unique input stage that allows the
commonmode input range to go above the positive and below the
negative supply voltages by 250 mV. This provides for the largest
possible input voltages for low voltage applications. The part is also
internallycompensated to reduce external component count.
The NE5230 has a low input bias current of typically ±40 nA, and a
large openloop gain of 125 dB. These two specifications are
beneficial when using the device in transducer applications. The large
openloop gain gives very accurate signal processing bwwewc.DaautasSheeeot4Uf.ctohme
large “excess” loop gain in a closedloop system.
The output stage is a class AB type that can swing to within 100 mV
of the supply voltages for the largest dynamic range that is needed in
many applications. The NE5230 is ideal for portable audio equipment
and remote transducers because of its low power consumption, unity
gain bandwidth, and 30 nV/Hz noise specification.
Features
Works Down to 1.8 V Supply Voltages
Adjustable Supply Current
Low Noise
Commonmode Includes Both Rails
VOUT Within 100 mV of Both Rails
PbFree Packages are Available
Applications
Portable Precision Instruments
Remote Transducer Amplifier
Portable Audio Equipment
RailtoRail Comparators
Halfwave Rectification without Diodes
Remote Temperature Transducer with 4.0 to 20 mA Output
Transmission
http://onsemi.com
8
1
SOIC8
D SUFFIX
CASE 751
8
1
PDIP8
N SUFFIX
CASE 626
PIN CONNECTIONS
N, D Packages
NC
IN
+IN
VEE
1
2
3
4
+
8 NC
7 VCC
6 OUTPUT
5 BIAS ADJ.
(Top View)
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 16 of this data sheet.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
March, 2006 Rev. 4
1
Publication Order Number:
NE5230/D

1 page




SA5230 pdf
NE5230, SA5230, SE5230
DC AND AC ELECTRICAL CHARACTERISTIC Unless otherwise specified, ±0.9V Vs ≤ ±7.5 V or equivalent single supply,
RL = 10 kW, full input commonmode range, over full operating temperature range.
Characteristic
Symbol
Test Conditions
Bias Min
Typ Max
Unit
NE5230, SA5230, SE5230
LargeSignal OpenLoop Gain
AVOL VS = ±7.5 V
RL = 10 kW; TA = 25°C
High
Low
120
60
2000
750
V/mV
TA = Tlow to Thigh
High
Low
100
50
Output Voltage Swing
Slew Rate
Inverting Unity Gain Bandwidth
VOUT
SR
BW
VS = ±0.9 V
VS = ±7.5 V
TA = 25°C +SW
TA = 25°C SW
TA = Tlow to Thigh; +SW
TA = Tlow to Thigh; SW
TA = 25°C +SW
TA = 25°C SW
TA = Tlow to Thigh; +SW
TA = Tlow to Thigh; SW
TA = 25°C
CL = 100 pF; TA = 25°C
Any
Any
Any
Any
Any
Any
Any
Any
High
Low
High
Low
750
750
700
700
7.30
7.32
7.25
7.30
800
800
7.35
7.35
7.30
7.35
0.25
0.09
0.6
0.25
mV
V
V/ms
V/ms
MHz
MHz
Phase Margin
Settling Time
Input Noise
Total Harmonic Distortion
qM
tS
VINN
THD
CL = 100 pF; TA = 25°C
CL = 100 pF, 0.1%
RS = 0 W; f = 1.0 kHz
VS = ±7.5 V
AV = 1; VIN = 500 mV; f = 1.0 kHz
VS = ±0.9 V
AV = 1, VIN = 500 mV; f = 1.0 kHz
Any
High
Low
High
Low
High
High
70
2.0
5.0
30
60
0.003
0.002
°
ms
ms
nV/Hz
nV/Hz
%
%
For NE5230 devices, Tlow = 0°C and Thigh = +70°C. For SA5230 devices, Tlow = 40°C and Thigh = +85°C.
For SE5230 devices, Tlow = 40°C and Thigh = +125°C.
http://onsemi.com
5

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SA5230 arduino
NE5230, SA5230, SE5230
What this means is that several instruments, such as a chart
recorder, a meter, or a controller, as well as a long cable, can
be connected in series on the loop and still obtain accurate
readings if the total resistance does not exceed 650 W.
Furthermore, any variation of resistance in this range will
not change the output current.
Any voltage output type transducer can be used, but one
that does not need external DC voltage or current excitation
to limit the maximum possible load resistance is preferable.
Even this problem can be surmounted if the supply power
needed by the transducer is compatible with the NE5230.
The power goes up the line to the transducer and amplifier
while the transducer signal is sent back via the current output
of the NE5230 transconductance configuration.
The voltage range on the input can be changed for
transducers that produce a large output by simply increasing
the current sense resistor to get the corresponding 4.0 to
20 mA output current. If a very long line is used which
causes high line resistance, a current repeater could be
inserted into the line. The same configuration of Figure 7 can
be used with exception of a resistor across the input and line
ground to convert the current back to voltage. Again, the
current sensing resistor will set up the transconductance and
the part will receive power from the line.
TEMPERATURE TRANSDUCER
A variation on the previous circuit makes use of the supply
current control pin. The voltage present at this pin is
proportional to absolute temperature (PTAT) because it is
produced by the amplifier bias current through an internal
resistor divider in a PTAT cell. If the control pin is connected
to the input pin, the NE5230 itself can be used as a
temperature transducer. If the center tap of a resistive pot is
connected to the control pin with one side to ground and the
other to the inverting input, the voltage can be changed to
give different temperature versus output current conditions
(Figure 8). For additional control, the output current is still
proportional to the input voltage differential divided by the
current sense resistor.
When using the NE5230 as a temperature transducer, the
thermal considerations in the previous section must be kept
in mind.
3
+
7 VCC
NE5230 6
2
4
VEE
5
10W
200
RC
IOUT
V
+REMOTE
POWER
SUPPLY
RL
NOTES:
1. IOUT = VIN/RC
2.
RL
MAX
V REMOTE
* 1.8V
IOUT
*
VINMAX
For RC = 1W
IOUT
VIN
4mA 4mV
20mA 20mV
Figure 8. NE5230 remote temperature transducer utilizing 4.0 20 mA current transmission. This application
shows the use of the accessibility of the PTAT cell in the device to make the part, itself, a transducer.
http://onsemi.com
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