NTE7072 NTE-7072 | ECG7072 ECG-7072 | NTE Electronics
NTE7072
Integrated Circuit
Dual DC Controlled Potentiometer Circuit
Description:
The NTE7072 is a monolithic integrated circuit in an 18-Lead DIP type package designed for use as a volume and tone control circuit in stereo amplifiers. This dual tandem potentiometer IC consists of two ganged pairs of electronic potentiometers with eight inputs connected via impedance converters, and the four outputs driving individual operational amplifiers. The setting of each electronic potentiometer pair is controlled by an individual DC control voltage. The potentiometers operate by current division between the arms of cross-coupled long-tailed pairs. The current division factor is determined by the level and polarity of the DC control voltage with respect to an externally available reference level of half the supply voltage. Since the electronic potentiometers are adjusted by a DC control voltage, each pair can be controlled by single linear potentiometers which can be located in any position dictated by the equipment styling. Since the input and feedback impedances around the operational amplifier gain blocks are external, the NTE7072 can perform bass/treble and volume/loudness control. It also can be used as a low-level fader to control the sound distribution between the front and rear loudspeakers in car radio installations.
Features:
- High Impedance Inputs to Both 'Ends' of each Electronic Potentiometer
- Ganged Potentiometers Track Within 0.5dB
- Electronic Rejection of Supply Ripple
- Internally-Generated Reference Level Available Externally so that the Control Voltage can be made to Swing Positively and Negatively Around a Well-Defined 0V level
- The Operational Amplifiers have Push-Pull Outputs for Wide Voltage Swing and The Operation Amplifier Outputs are Current Limited to Provide Output Short-Circuit Protection
- Although Designed to Operate from a 20V Supply (Giving a Maximum Input and Output Signal Level of 6V), the NTE7072 can Work from a Supply as low as 7.5V with Reduced Input and Output Signal Levels
Applications:
- Volume Control
- Tone Control
- Low Level Fader
Info as pdf-file
NTE-ECG replacement list as pdf-file
Diagrams and Info of most NTE-ECG Components
Absolute Maximum Ratings:
Supply Voltage (Pin11), VCC |
|
23V |
Control Voltages (Pin9 and Pin10) |
|
1V |
Input Voltage Ranges (With Respect to Pin18), VI |
|
|
(Pin3, Pin4, Pin5, Pin6, Pin13, Pin14, Pin15, and Pin16) |
|
0 to VCC |
Total Power Dissipation, Ptot |
|
800mW |
Thermal Resistance, Crystal-to-Ambient, RthCRA |
|
80°C/W |
Operating Ambient Temperature Range, TA |
|
-30° to +80°C |
Storage Temperature Range, Tstg |
|
-65° to +150°C |
Electrical Characteristics (Treble and Bass Control Circuit): (TA = +25°C, VCC = 20V, Rg = 60 Ohms, RL > 4.7k Ohm, CL < 30pF, f = 1kHz, with linear frequency response (VC1 = VC2 = 0V) unless otherwise specified)
Parameter |
Symbol |
Test Conditions |
Min |
Typ |
Max |
Unit |
Supply Current |
ICC |
Without Load |
14 |
22 |
30 |
mA |
Frequency Response (-1dB) |
f |
VC1 = VC2 = 0V |
10 |
- |
22k |
Hz |
Voltage Gain |
AV |
At Linear Frequency Response (VC1 = VC2 = 0V) |
- |
0 |
- |
dB |
Gain Variation |
|
f = 1kHz, At Maximum Bass/Treble Boost or Cut at ±VC1 = ±VC2 = 120mV |
- |
±1 |
- |
dB |
Bass Boost |
|
At 40Hz (Ref. 1kHz) VC2 = 120mV |
- |
17.5 |
- |
dB |
Bass Cut |
|
At 40Hz (Ref. 1kHz) -VC2 = 120mV |
- |
17.5 |
- |
dB |
Treble Boost |
|
At 16kHz (Ref. 1kHz) VC1 = 120mV |
- |
16 |
- |
dB |
Treble Cut |
|
At 16kHz (Ref. 1kHz) -VC1 = 120mV |
- |
16 |
- |
dB |
Total Harmonic Distortion |
THD |
VO(RMS) = 300mV |
f = 1kHz (Measured Selectively) |
- |
0.002 |
- |
% |
f = 20Hz to 20kHz |
- |
0.005 |
- |
% |
VO(RMS) = 5V |
f = 1kHz |
- |
0.015 |
0.1 |
% |
f = 20Hz to 20kHz |
- |
0.05 |
0.1 |
% |
Signal Level |
VI, VO(RMS) |
THD = 0.7% (Input and Output) |
5.5 |
6.2 |
- |
V |
Power Bandwidth |
BW |
At Reference Level VO(RMS = 5V (-3dB), THD = 0.1% |
- |
40 |
- |
kHz |
Output Noise Voltage |
VNO(RMS) |
Signal Plus Noise (RMS) Value, f = 20Hz to 20kHz |
- |
75 |
- |
µV |
VNO(M) |
Noise (Peak Value) Weighted to DIN 45405, CCITT Filter |
- |
160 |
230 |
µV |
Crosstalk Attenuation (Stereo) |
|
f = 1kHz |
- |
86 |
- |
dB |
f = 20Hz to 20kHz |
- |
80 |
- |
dB |
Control Voltage Crosstalk to the Outputs |
|
f = 1kHz, VC1(RMS) = VC2(RMS) = 1mV |
- |
20 |
- |
dB |
Ripple Rejection |
|
f = 100Hz, VCC(RMS) < 200mV |
- |
46 |
- |
dB |
Unser Halbleiter Katalog (ohne NTE-Sortiment)
NTE Sortiment (unser ganzes Sortiment)
Einzel-Halbleiter (ganzes Sortiment)
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Anmerkung zu den NTE/ECG Austauschhalbleiter:
NTE-Austauschhalbleiter (früher ECG Philips und Sylvania) sind sorgfältig
ausgesuchte und erprobte Halbleiter, die einen sicheren Ersatz
für Originaltypen verschiedenster Hersteller und Ursprünge für
fast alle Applikationsbereiche im Wartungsdienst bieten.
Alle NTE-Austausch-Halbleiter sind einzeln in durchsichtigen
Plastikbeuteln verpackt, auf welchen die wichtigsten Daten
vermerkt sind.