NTE NTE1866 Datasheet

NTE1866

Integrated Circuit

5–Point LED VU Scale Bar Level Meter Driver

Description:

The NTE1866 is a monolithic integrated circuit in a 9–Lead SIP type package designed for use as an
LED level meter driver for radio cassette recorders and other audio products.

Features;

D Rectifying amplifiers are used to allow operation by AC or DC input.
D The wide display range covers –13dB to +17dB, enabling the display of even signals with wide

dynamic range.

D The drive current for the LEDs is regulated, eliminating LED current variations with supply volt-

age variations.

D The reference voltage is built in to eliminate output display variations with variations of supply

voltage.

D Wide supply voltage range (3.5V to 16V) enables a wide range of applications.

Applications:

D VU meters
D Signal meters
D Other display devices

Absolute Maximum Ratings

Power Supply Voltage, V
Power Dissipation, P

D

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

CC

Derate Above 25°C 6.4mW/°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Junction Temperature, T

J

Operating Temperature Range, T
Storage Temperature Range, T

stg

opr

18V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

800mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–25° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: (TA = +25°C, VCC = 12V, f = 1kHz unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Power Supply Voltage V
Quiescent Current I
Display Range

Range 1
Range 2 V
Range 3 V
Range 4 V
Range 5 V

Input Voltage V
LED Current I
Input Current I

V

CC

Q

C1
C2
C3
C4
C5

IN

LED

IN

Pin Connection Diagram

(Front View)

9
8
7

V

CC

Input
Amp Output

5.5 12.0 16.0 V

– 7 12 mA

–16 –13 –9 dB

–9 –7 –4 dB

– 0 – dB

+7 +10 +12 dB

+13 +17 +19 dB

21 47 62 mV

11.0 15.0 18.5 mA
– 0.3 1.0 µA

rms

D5

6
5 GND

4

D4

3

D3

1

2

D2

1

D1

.870 (22.0)

.110 (2.8)

.235

(6.0)

19

.195

(5.0)

.100 (2.54)

.800 (20.32)

.012 (0.30)