NTE NTE1866

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 voltage 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: (TA = +25°C unless otherwise specified)
Power Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.4mW/°C
Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Electrical Characteristics: (TA = +25°C, VCC = 12V, f = 1kHz unless otherwise specified)
Parameter
Min
Typ
Max
Unit
VCC
5.5
12.0
16.0
V
IQ
–
7
12
mA
Display Range
Range 1
VC1
–16
–13
–9
dB
Range 2
VC2
–9
–7
–4
dB
Range 3
VC3
–
0
–
dB
Range 4
VC4
+7
+10
+12
dB
Range 5
VC5
+13
+17
+19
dB
Input Voltage
VIN
21
47
62
mVrms
LED Current
ILED
11.0
15.0
18.5
mA
Input Current
IIN
–
0.3
1.0
µA
Power Supply Voltage
Quiescent Current
Symbol
Test Conditions
Pin Connection Diagram
(Front View)
9 VCC
8 Input
7 Amp Output
6 D5
5 GND
4 D4
3 D31
2 D2
1 D1
.110 (2.8)
.870 (22.0)
.235
(6.0)
1
9
.195
(5.0)
.100 (2.54)
.800 (20.32)
.012 (0.30)