NTE1497 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit Audio Preamp w/ALC

NTE1497
Integrated Circuit
Audio Preamp ^w/ALC
Description:
The NTE1497 is a silicon monolithic integrated circuit in a 7−Lead SIP type package designed for use
as a high gain, low noise preamplifier with Automatic Level Control (ALC). This device is primarily
used as a record and playback amplifier in cassette tape recorders.
Features:
D Low Noise
D Wide Supply Voltage Range: V_CC = 2.2V to 15V
D High Gain: A_νo = 70dB Typ
D High Output Voltage: V_OM = 1.0 V_rms Typ.
D Low Distortion
D Wide ALC Range
Absolute Maximum Ratings: (T_A = +25°C unless otherwise specified)
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Package Dissipation (T_A = 75°C), P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270mW
Operating Temperature, T_opt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C
Storage Temperature, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +125°C
Recommended Operating Conditions: (T_A = +25°C unless otherwise specified)
Operating Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V
Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2V to 15V
Electrical Characteristics: (T_A = +25°C, V_CC = 5V, f = 1kHz, R_L = 10kΩ unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Circuit Current
Open Loop Voltage Gain
Voltage Gain
Maximum Output Voltage
Input Impedance
Equivalent Input Noise Voltage
I_CC
A_νo
A_ν
V_OM
r_i
ν_nin
ν_in = 0
ν_in = −80dBm
ν_in = −50dBm
T.H.D. = 1%
f = 1kHz
R_G = 2.2kΩ, NAB Equalized
15 to 30kHz BPF + 40dB Amp
0.9 1.5 2.2 mA
64 70 − dB
− 33.5 − dB
0.7 1.0 − V
− 100 − kΩ
− 1.2 2.0 μV_rms
Collector Voltage of ALC Transistor V_Pin5 Pin7 to Pin6: 100kΩ, Pin7 to Pin5: 100Ω
− 0.7 −
V