NTE1439 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit Dual Attenuator

NTE1439
Integrated Circuit
Dual Attenuator
Description:
The NTE1439 is an integrated circuit in a 14–Lead DIP type package which logarithmically controls
the throughput (gain) of an audio signal by the DC voltage or resistance value and has 2 circuits. Since
voltage is internally stabilized, the stable operations are assured at the allowable supply voltage range
(8V to 14.4V). The current source is provided with control circuit so that operation can be controlled
by the voltage drop. This device is used for electronic volume control in radio, television, stereo, tape
recorder, an transceiver applications.
Features:
D Wide Operating Voltage Range
D High Attenuation Level
D Easy to Control Signal Gain with a Simple Circuit
D Less Crosstalk Between Each Channel
Absolute Maximum Ratings: (T_A = +25°C unless otherwise specified)
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V
Circuit Voltage (Note 1), V₆, V₁₃ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Circuit Voltage, V₃, V₁₀ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V_CC
Total Current Dissipation, I_tot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
Total Power Dissipation, P_tot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360mW
Operating Ambient Temperature Range, T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Note 1. DC voltage must not be applied to Pin1, Pin2, Pin8, and Pin9 from the outside. 6V is used
as voltage for V₆ and V₁₃ and no larger than V_CC voltage.
Electrical Characteristics: (T_A = +25°C, V_CC = 12V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Gain
Gain Ratio (Ch2/Ch1)
G_V1
G_V2
G_V3
G_V3(2)/G_V3(1)
v_i = 100mV, V_cont = 5V, f = 1kHz
v_i = 100mV, V_cont = 4V, f = 1kHz
v_i = 100mV, V_cont = 3V, f = 1kHz
v_i = 100mV, V_cont = 3V, f = 1kHz
11.7 – 15.7 dB
10.5 – 15.0 dB
–14 –
2 dB
–6 – +6 dB
Note 2. The same measurement should be applied for Ch2.