NTE NTE1634 Datasheet

NTE1634

Integrated Circuit

Dual Preamp w/ALC

Description:

The NTE1634 is a monolithic integrated circuit in a 14–Lead DIP type package consisting of a dual
equalizer ampli fier w i th autom atic l evel c ontr ol ( ALC) a nd is suitable f or s ter eo r adio c assette applications.

Features:

D Dual Equalizer Amplifier with Built–In ALC Circuit.
D Recording Amp Available Because of High Gain Characteristic (Variable Monitor Possible).
D Good Channel Separation (Sep = 50dB Typ)
D Capable of Direct Meter Driving and ALS Transistor.
D Good ALC Response Balance Between Channels.
D Wider Operating Supply Voltage Range (4V to 13V)

Absolute Maximum Ratings: (TA = +25°C unles otherwise specified)
Supply Voltage, V

CC

Power Dissipation, PD 600mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Temperature Range, T
Storage Temperature Range, T

stg

opr

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

–40° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ALC TR Maximum Current 3.5mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristic: (TA = +25°C, VCC = 5V, RL = 10kΩ: Playback, RL = 680Ω: Recording

unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Circuit Current I
Voltage Gain (Open Loop) A
Voltage Gain (Closed Loop) A

Output Voltage V
Total Harmonic Distortion THD VO = 0.5V, Play – 0.1 1.0 %
Input Resistance R
Equivalent Input Noise Voltage V
Cross Talk CT Rg = 2.2KΩ 40 50 – dB
ALC Range Vi = –60dBm, Record 35 45 – dB
ALC Balance Vi = –20dBm, Record – 0 2.0 dB
ALC Distortion Vi = –20dBm, Record – 0.5 2.0 %

A

CC

VO

V1
V2

O

NI

Vi = 0 – 4.5 10 mA

– 85 – dB
Play – 40 – dB
Record – 58 – dB
THD = 1%, Play 0.9 1.2 – V

i

BW(–3dB)=20Hz to 20kHz – 1.0 2.0 µV

21 30 – kΩ

Pin Connection Diagram

GND

Output 1

PC 1
NF 1

1
2

3
4

5Input 1
6ALC Output 1

7ALC Input

14 8

14

V

CC

Output 2

13
12

PC 2

11

NF 2

10 Input 2

9 ALC Output 2
8 DC

17

.785 (19.95) Max

.300 (7.62)

.200 (5.08)

Max

.100 (2.45) .099 (2.5) Min

.600 (15.24)