Philips Semiconductors

Product specification

NE/SA5230

Low voltage operational amplifier

2

1994 Aug 31

853-0942 13721

DESCRIPTION

The NE5230 is a very low voltage operational amplifier that can

perform with a voltage supply as low as 1.8V or as high as 15V. 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

±0.9V supply voltages, the current required is only 110µA when the

current control pin is left open. Even with this low power

consumption, the device obtains a typical unity gain bandwidth of

180kHz. When the bias adjusting pin is connected to the negative

supply, the unity gain bandwidth is typically 600kHz while the supply

current is increased to 600

µA. 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

common-mode input range to go above the positive and below the

negative supply voltages by 250mV. This provides for the largest

possible input voltages for low voltage applications. The part is also

internally-compensated to reduce external component count.

The NE5230 has a low input bias current of typically

±40nA, and a

large open-loop gain of 125dB. These two specifications are

beneficial when using the device in transducer applications. The

large open-loop gain gives very accurate signal processing because

of the large “excess” loop gain in a closed-loop system.

The output stage is a class AB type that can swing to within 100mV

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 30nV/

√Hz noise

specification.

FEATURES

PIN CONFIGURATION

1

2

3

45

6

7

8

NC

–IN

+IN

OUTPUT

BIAS ADJ.

VEE

VCC

NC

–

+

N, D, FE Packages

SP00250

Figure 1. Pin Configuration

APPLICATIONS

transmission

ORDERING INFORMATION

DESCRIPTION

TEMPERATURE RANGE

ORDER CODE

DWG #

8-Pin Plastic Small Outline (SO) Package

0 to +70

°C

NE5230D

SOT96-1

8-Pin Plastic Dual In-Line Package (DIP)

0 to +70

°C

NE5230N

SOT97-1

8-Pin Plastic Small Outline (SO) Package

-40

°C to +85°C

SA5230D

SOT96-1

8-Pin Ceramic Dual In-Line Package (CERDIP)

-40

°C to +85°C

SA5230FE

0580A

8-Pin Plastic Dual In-Line Package (DIP)

-40

°C to +85°C

SA5230N

SOT97-1