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)