NTE NTE1780 Datasheet

NTE1780

Integrated Circuit

2 Channel Tone/DC Volume/Balance Control Circuit

Description:

The NTE1780 is an integrated circuit in a 12–Lead SIP type package designed for 2–channel volume
and tone control circuits.

Features:

D Easier Compact Set Design
D Functions Are: 2–Channel Bass, Treble Control Circuit
D Balance Control Circuit

w

D DC Volume Control Circuit (Volume Control
D All Functions Enable DC Controllable

/Physiological Characteristics)

Absolute Maximum Ratings:

Supply Voltage, V
Circuit Voltage, V
Supply Current, I
Circuit Current, I3, I
Power Dissipation, P

CC

1, 4, 5, 6–7

2

10

D

Operating Ambient Temperature Range, T
Storage Temperature Range, T

(TA = +25°C unless otherwise specified)

, V

8, 9, 11, 12–7

stg

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

opr

Electrical Characteristics: (TA = +25C, VCC = 12V unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Circuit Current I
Circuit Voltage V

Volume Circuit

Maximum Output VOmax
Channel Balance (Note 1) CB
Volume Starting Voltage V

Residual Tone Level

(Volume Minimum)

Balance Control Circuit

tot

3, 10–7Vi

V

min.

VCC = 12V 24 38 50 mA

= No Signal, V12 = VCC, V1 = V5 = V8 = VCC/2 8.0 8.4 8.8 V

f = 1kHz, Vi = 400mV
V1 = V5 = V8 = VCC/2

f = 1kHz, Vi = 400mV

(st)

V

= V5 = V8 = VCC/2, Note 2

1

f = 1kHz, Vi = 400mV

= V5 = V8 = VCC/2

V

1

, V12 = VCC,

rms

, V12 = VR,

rms

, V12 = 0,

rms

190 230 270 mV

– +0.2 ±1.0

0.40 0.60 0.90 V

– 25 50 µV

14.4V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0, V

2–7

64mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

920mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

rms

rms

Attenuation (R–ch) A

ttBR

f = 1kHz, Vi = 400mV

= V8 = VCC/2, V

V

5

V

CC

(VR–1), V

OR1

: V1 = 0V, Note 3

OR2

, V12 = VCC,

rms

: V1 = (5.5/12),

Note 1. Deviation between R and L–ch for maximum output.
Note 2. V12 voltage when output voltage is 0.1mV
Note 3. A

ttBR

: V

OR2/VOR1

rms

.

–32 –45 – dB

Electrical Characteristics (Cont’d): (TA = +25C, VCC = 12V unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Balance Control Circuit (Cont’d)

Attenuation (L–ch) A

ttBL

f = 1kHz, Vi = 400mV

= V8 = VCC/2, V

V

5

V

CC

(VR–1), V

OR1

: V1 = 0V, Note 4

OR2

Tone Control Circuit

Low Frequency Boost

Control

Low Frequency Cut

Control

High Frequency Boost

Control

High Frequency Cut

Control

V40/V

V40/V

V15/V

V40/V

1kV1k

V
V
V

1kV1k

V
V
V

1kV1k

V
V
V

1kV1k

V
V
V

: f = 1kHz, Vi = 400mV
= VCC, V1 = V5 = V8 = VCC/2

12

: f = 40Hz, Vi = 400mV

40

= VCC, V5 = V8 = V

12

: f = 1kHz, Vi = 400mV
= VCC, V1 = V5 = V8 = VCC/2

12

: f = 40Hz, Vi = 400mV

40

= VCC, V5 = V8 = V

12

: f = 1kHz, Vi = 400mV
= VCC, V1 = V5 = V8 = VCC/2

12

: f = 15kHz, Vi = 400mV

15

= VCC, V5 = V8 = V

12

: f = 1kHz, Vi = 400mV
= VCC, V1 = V5 = V8 = VCC/2

12

: f = 15kHz, Vi = 400mV

15

= VCC, V5 = V8 = V

12

Crosstalk CT f = 1kHz, Vi = 400mV

V

= V5 = V8 = VCC/2

1

Output Noise Voltage V

Vi = No Signal, V12 = VCC, V1 = V5 = V8 = VCC/2 – 80 120 µV

no

Distortion Rate THD f = 1kHz, Vi = 400mV

V

= V5 = V8 = VCC/2

1

Input Resistance R

R

Output Resistance R

i (6), (9)

i (4), (11)

o (3), (10)

f = 1kHz 8.2 11.0 13.5 kΩ

f = 1kHz 60 110 160 Ω

, V12 = VCC,

rms

: V1 = (6.5/12),

Output voltage when

rms

Output voltage when

rms

CC

Output voltage when

rms

Output voltage when

rms

CC

Output voltage when

rms

Output voltage when

rms

CC

Output voltage when

rms

Output voltage when

rms

CC

, V

rms

rms

= VCC,

1q2

, V12 = VCC,

–32 –45 – dB

8 10 12 dB

–7.5 –12.0 –16.0 dB

7.5 10.0 13.0 dB

–7.5 –12.0 –18.0 dB

–65 –80 – dB

rms

– 0.2 0.5 %

11.0 16.0 22.0 kΩ

Note 4. A

ttBL

: V

OL2/VOL1

Pin Connection Diagram

(Front View)

Volume Control

12

Lt Ch Low Freq Input

11

Lt Ch Output

10

Lt Ch Input

9

Treble Control

8

GND

7

Rt Ch Input

6

Bass Control

5

Rt Ch Low Freq Input

4

Rt Ch Output

3
2

V

CC

Balance Control

1