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)
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