LA3161

www.onsemi.com

5

(b) Tape speed : 4.75cm/s. (cassette)

VG : RNF

VG

30

35

40

dB

RNF

440

240

130



(c) Flat amplifier

VG : RNF

VG

30

35

40

dB

RNF

3.2

1.8

1

k



Proper cares in using IC

1. Maximum Rating

If the IC is used in the vicinity of the maximum rating, even a slight variation in conditions may cause the maximum

rating to be exceeded, thereby leading to a breakdown. Allow an ample margin of variation for supply voltage, etc.

and use the IC in the range where the maximum rating is not exceed.

2. Short between pins

If the supply voltage is applied when the space between pins is shorted, a breakdown or deterioration may occur.

When installing the IC on the board or applying the supply voltage, make sure that the space between pins is not

shorted with solder, etc.

3. Breakdown of IC attributable to inverted insertion

If the IC is inserted inversely and operated, the IC may suffer from something unusual, thereby leading to a breakdown or

deterioration of the IC. When installing the IC on the board or operating the IC, check the marked surface of IC.

Proper cares to be taken for obtaining optimum operation of IC

 Set DC resistance of R1, R2 of NAB element at approximately 100k.

 Determine the gain by changing RNF without chaging NAB constant (Refer to Examples of NAB constant.).

JK316108

2

3

5

7

0.1

5

10

100

23

5

1.0

23

5

0.1

23

5

2

3

5

7

1.0

2

3

5

Input voltage, Vi -- mV

VO -- Vi

Ω

3

5

0.1

5

1.0

0.1

23

5

2

3

5

Output voltage, VO -- V

1.0

2

3

5

10

2

3

77

2

3

THD -- VO

JK316110

Ω

5

7

1.0

5

10

1

23

5

2

3

5

7

10

2

3

77

100

23

5

7

2

FILTER

OUTPUT

Amp

VG = 45dB

FLAT

Amp

LA3161

INPUT

Rg

VG = 35dB

VNI -- Rg

JK316111

15Hz to 30kHz

Signal source resistance, Rg -- k

Ω

JK316109

Frequency, f -- Hz

60

100

2 3

5

20

30

40

50

80

90

1K

2 3

5

10K

2 3

5

100K

23

5

9.5cm/sec

70

VG -- f

W

ithout

NFB

W

ith

NFB

(N

AB)

Ω

C NF

μF (100Ω

short)

47μ

F (100

Ω short)