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NTE2003

Integrated Circuit Dolby B–Type Noise Reduction Processor

NTE Electronics 

Electrical Characteristics (Cont’d): (VCC = 12V, TA = +25°C, NB 0dB refers to 580mVrms Dolby

level at Pin3 unless otherwise specified)

Parameter

Test Conditions

Min Typ Max Unit

Encode Characteristics (Input to Pin5)

1.3kHz, –20dB

–17.2 –15.7 .14.2 dB

2.5kHz, –20dB

–17.4 –15.9 –14.4 dB

3.0kHz, –30dB

–22.7 –21.2 –19.7 dB

5.0kHz, –30dB

–23.3 –21.8 –20.3 dB

10kHz, 0dB

–1.0 0.5 2.0 dB

10kHz, –40dB

–31.1 –29.6 –28.1 dB

14kHz, –30dB

–25.4 –23.9 –22.4 dB

Back–to–Back Frequency Response

With Standard Dolby B–Type Processor –1.5 0

1.5 dB

Input Resistance

Pin5

45 65 85 kΩ

Pin2

4.3 5.6 6.9 kΩ

Output Resistance

Pin6

1.8 2.4 3.0 kΩ

Pin3

–

80 120 kΩ

Pin7

–

80 120 kΩ

Pin Connection Diagram

Variable Impedance Input 1

Amp B Input 2

Amp B Output 3

Bias 4

Amp A Input 5

Amp A Output 6

Amp S Output 7

Decoupling 8

16 VCC

15 Variable Impedance Control

14 Rectifier Output

13 Rectifier Bias

12 Rectifier Input

11 Amp D Output

10 Amp D Feedback Decoupling

9 GND

16

9

.260 (6.6) Max

1

8

.850 (21.6

.180

(4.0)

.100 (2.54)

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