- 1 -

Ver.01

NJM320A/NJM321A

Low power single channel OP-Amp

Features

• Input offset voltage : 2.5mV max.

• Input offset voltage drift : 5µV/℃ typ.

• Supply current : 0.45mA typ.

at Vcc

+=5V

• Input bias current : 20nA typ.

• Input common-mode voltage range includes ground

• Internal ESD protection :

Human body model (HBM)±2000V typ.

• Integrated EMI filter : EMIRR=84dB typ. @ f=1.8GHz

• Wide single supply voltage range or dual supplies

+3V to +32V or ±1.5V to ±16V

Description

The NJM320A / NJM321A consist of two independent, high gain, internally

frequency compensated operation amplifiers, which were designed specifically

to operate from a single power supply over a wide range of voltages. Operation

from split power supplies is also possible and the low power supply current

drain is independent of the magnitude of the power supply voltage.

Application areas include transducer amplifiers, DC gain blocks, and all the

conventional OP-Amp circuits, which now can be more easily implemented in

single power supply systems. For example, the NJM320A / NJM321A can be

directly operated off of the standard +5V power supply voltage, which is used in

digital systems and will easily provide the required interface electronics without

requiring the additional ±15V power supplies.

1

Schematic diagram

Figure 1. Schematic diagram

Pin connections

NJM320AF3, NJM321AF3

( SC88A )

NJM320AF, NJM321AF

( SOT-23-5 )

NJM321AKG1(*)

(*)Connect to exposed pad to VCC

-

(*)Connect to exposed pad to V-

(*)Exposed pad はV- に接続ください。

(*)Exposed pad はV- に接続ください。

NJM321AKG1

( DFN6-G1 (ESON6-G1) )

GND

VCC

inverting

Input

Output

non-inverting

Input

6μA

100μA

Q1

Q2

Q3

Q4

Q8

Q9

Q10

Q11

Q12

CC

4μA

50μA

Q5

Q6

Q7

RSC

Q13

Non-Inverting Input

Inverting Input

Vcc

+

Vcc

-

Output

NJM320AF, NJM320AF3

1

2

3

5

4

VCC-

VCC+

Output

Inverting Input

Non-Inverting Input

(Top View)

NJM321AF, NJM321AF3

1

2

3

5

4

VCC+

VCC-

Output

Inverting Input

Non-Inverting Input

(Top View)

Output

N.C.

VCC+

VCC-

Non-Inverting Input

inverting Input

(Top View)

Exposed

Pad on

Underside

1

2

3

4

5

6