SE5230DR2G ON Semiconductor, SE5230DR2G Datasheet - Page 10

• Manufacturer Part Number: SE5230DR2G
• Description: IC OP AMP LOW VOLTAGE 8-SOIC
• Manufacturer: ON Semiconductor
• Type: General Purpose Amplifierr

Specifications of SE5230DR2G

• Amplifier Type: General Purpose
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Slew Rate: 0.25 V/µs
• Gain Bandwidth Product: 600kHz
• Current - Input Bias: 40nA
• Voltage - Input Offset: 400µV
• Current - Supply: 1.1mA
• Current - Output / Channel: 32mA
• Voltage - Supply, Single/dual (±): 1.8 V ~ 15 V, ±0.9 V ~ 7.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Number Of Channels: 1
• Voltage Gain Db: 126.02 dB
• Common Mode Rejection Ratio (min): 85 dB
• Input Offset Voltage: 3 mV
• Operating Supply Voltage: 3 V, 5 V, 9 V, 12 V
• Supply Current: 1.6 mA
• Maximum Power Dissipation: 500 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Maximum Dual Supply Voltage: +/- 7.5 V
• Minimum Operating Temperature: - 40 C
• Rail/rail I/o Type: No
• Number Of Elements: 1
• Unity Gain Bandwidth Product: 0.6MHz
• Common Mode Rejection Ratio: 85dB
• Input Bias Current: 150nA
• Single Supply Voltage (typ): 3/5/9/12V
• Dual Supply Voltage (typ): ±3/±5V
• Power Dissipation: 500mW
• Voltage Gain In Db: 126.02dB
• Power Supply Rejection Ratio: 85dB
• Power Supply Requirement: Single/Dual
• Shut Down Feature: No
• Single Supply Voltage (min): 1.8V
• Single Supply Voltage (max): 15V
• Dual Supply Voltage (min): ±0.9V
• Dual Supply Voltage (max): ±7.5V
• Technology: Bipolar
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details

REMOTE TRANSDUCER WITH CURRENT
TRANSMISSION
wires, but current transmission is the most beneficial when
the sensing of remote signals is the aim. It is further
enhanced in the form of 4.0 to 20 mA information which is
used in many control−type systems. This method of
transmission provides immunity from line voltage drops,
large load resistance variations, and voltage noise pickup.
The zero reference of 4mA not only can show if there is a
break in the line when no current is flowing, but also can
power the transducer at the remote location. Usually the
transducer itself is not equipped to provide for the current
transmission. The unique features of the NE5230 can
provide high output current capability coupled with low
power consumption. It can be remotely connected to the
transducer to create a current loop with minimal external
components. The circuits for this are shown in Figures 6
and 7. Here, the part is configured as a voltage−to−current,
or transconductance amplifier. This is a novel circuit that
takes advantage of the NE5230’s large open−loop gain. In
AC applications, the load current will decrease as the
open−loop gain rolls off in magnitude. The low offset
voltage and current sinking capabilities of the NE5230 must
also be considered in this application.
transistor configuration. The inverting input is equivalent to
the “base,” the point where V
meet is the “emitter,” and the connection after the output
diode meets the V
is essential to keep the output from saturating in this
configuration. From here it can be seen that the base and
emitter form a voltage−follower and the voltage present at
R
input.
current−follower and the current flowing through R
equivalent to the current through R
sets up the current loop. Therefore, the following equation
can be formulated for the working current transmission line.
The load current is:
and proportional to the input voltage for a set R
current is constant no matter what load resistance is used
while within the operating bandwidth range of the op amp.
When the NE5230’s supply voltage falls past a certain point,
the current cannot remain constant. This is the “voltage
compliance” and is very good for this application because of
the near rail output voltage. The equation that determines the
voltage compliance as well as the largest possible load
resistor for the NE5230 is as follows:
C
R Lmax +
There are many ways to transmit information along two
The NE5230 circuit shown in Figure 6 is a pseudo
must equal the input voltage present at the inverting
Also,
V remote supply * V CC min * V IN max
the
CC
pin is the collector. The output diode
emitter
I L +
EE
V IN
R C
and the non−inverting input
and
I L
L
and the amplifier. This
collector
C
. Also, the
form
(eq. 2)
(eq. 3)
http://onsemi.com
C
is
a
10
(approximately 1.8 V) that will still keep the part
operational. As an example, when using a 15 V remote
power supply, a current sensing resistor of 1.0 W, and an
input voltage (V
20 mA. Furthermore, a load resistance of zero to
approximately 650 W can be inserted in the loop without any
change in current when the bias current−control pin is tied
to the negative supply pin. The voltage drop across the load
and line resistance will not affect the NE5230 because it will
operate down to 1.8 V. With a 15 V remote supply, the
voltage available at the amplifier is still enough to power it
with the maximum 20 mA output into the 650 W load.
NOTES:
Figure 7. The Same Type of Circuit as Figure 6, but
Where V
Transconductance Amp with 4.0 − 20 mA Current
1. I
2. R
V
Figure 6. The NE5230 as a Remote Transducer
R
N
D
U
C
R
T
A
S
E
IN
+
−
OUT
L MAX
V
IN
= V
CC min
for Sourcing Current to the Load
3
2
Transmission Output Capability
≈
IN/RC
V
+
−
NE5230
3
2
REMOTE
IN
+
−
NE5230
4
7
is the worst−case power supply voltage
) of 20 mV, the output current (I
V
V
4
7
R
EE
CC
* 1.8V * V
5
C
V
V
I
R
EE
OUT
CC
5
C
6
6
+ I
INMAX
OUT
I
OUT
20mA
R
For R
4mA
I
OUT
L
V
+
−
C
R
REMOTE
SUPPLY
POWER
L
= 1.0 W
+
−
20mV
4mV
V
V
IN
CC
L
) is