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NJM2790V

AUDIO LINE AMPLIFIER with MUTE FUNCTION

Japan Radio Corporation  

NJM2790

AUDIO LINE AMPLIFIER with MUTE FUNCTION

s GENERAL DESCRIPTION

The NJM2790 is a low voltage audio line amplifier designed

for audio items.

Internal closed loop voltage gain is suitable for amplifier of

small line signal in digital audio items. It includes mute circuit

which realizes very low turn-noise at power on/off.

The NJM2790 is 6.5dB closed loop voltage gain, another

version of 3.5dB is the NJM2174.

It is suitable for digital audio items with line out.

s PACKAGE OUTLINE

NJM2790V

s FEARTURES

q Operating Voltage

q Operating Current

4.5 to 5.5V

2.5mA typ. at V+=5V

q Maximum Output Voltage

4dBV typ. at THD=0.1%

q Closed Loop Voltage Gain

3.5dB typ. at f=1kHz

2.5dB typ. at f=100kHz

q Mute Function

-85dB typ.

q Supply Voltage Rejection Ratio 60dB typ.

q Bipolar Technology

q Package Outline

SSOP14

s PIN CONFIGURATION

1

14

2

13

3

12

4

11

5

10

6

9

7

8

NJM2790V

PIN FUNCTION

1. GND

8. BIAS

2. NC

3. OUT-R

4. MUTE 1

9. NC

10. NC

11. IN-L

5. MUTE 2

6. MUTE C

7. IN-R

12. OUT-L

13. NC

14. V+

s BLOCK DIAGRAM

GND 1

NC 2

OUT-R 3

MUTE1 4

MUTE2 5 MUTE

MUTEC 6

IN-R 7

14 V+

13 NC

12 OUT-L

11 IN-L

10 NC

9 NC

BIAS 8 BIAS

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