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NTE1497

Integrated Circuit Audio Preamp w/ALC

NTE Electronics 

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: VCC = 2.2V to 15V

D High Gain: Aνo = 70dB Typ

D High Output Voltage: VOM = 1.0 Vrms Typ.

D Low Distortion

D Wide ALC Range

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V

Package Dissipation (TA = 75°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270mW

Operating Temperature, Topt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C

Storage Temperature, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +125°C

Recommended Operating Conditions: (TA = +25°C unless otherwise specified)

Operating Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V

Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2V to 15V

Electrical Characteristics: (TA = +25°C, VCC = 5V, f = 1kHz, RL = 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

ICC

Aνo

Aν

VOM

ri

νnin

νin = 0

νin = −80dBm

νin = −50dBm

T.H.D. = 1%

f = 1kHz

RG = 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 μVrms

Collector Voltage of ALC Transistor VPin5 Pin7 to Pin6: 100kΩ, Pin7 to Pin5: 100Ω

− 0.7 −

V

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