NTE NTE1670 Integrated circuit air core meter driver Datasheet

NTE1670
Integrated Circuit
Air Core Meter Driver
Description:
The NTE1670 is a function generator/driver for air–core (moving–magnet) meter movements in a
14–Lead DIP type package. A Norton amplifier and an NPN transistor are included on chip for signal
conditioning as required. Driver outputs are self–centering and develop ± 4.5V swing at 20mA. Better
than 2% linearity is guaranteed over a full 305–degree operating range.
Features:
D Self–Centering 20mA Outputs
D 12V Operation
D Norton Amplifier
D Function Generator
Applications:
D Air–Core Meter Driver
D Tachometers
D Ruggedized Instruments
Absolute Maximum Ratings:
Supply Voltage (Pin13), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V
Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1300mW
Collector–Emitter Breakdown Voltage, V(BR)CEO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20VMIN
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to –150°C
Lead Temperature (During soldering, 10sec Max), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Note 1 For operation above +25°C, the NTE1670 must be derated based upon a +125°C maximum
junction temperature and a thermal resistance of +76°C/W which applies for the device soldered in a printed circuit board and operating in a still–air ambient.
Electrical Characteristics: (VCC = 13.1V TA = +25°C unless otherwise specified)
Parameter
Supply Current (Pin13)
Regulator Voltage (Pin11)
Regulator Output Resistance (Pin11)
Symbol
Test Conditions
Min
Typ
Max
Unit
IS
Zero Input Frequency
–
–
65
mA
8.1
8.5
8.9
V
–
13.5
–
Ω
VREG
IREG = 0mA
IREG = 0mA to 3mA
Electrical Characteristics (Cont’d): (VCC = 13.1V TA = +25°C unless otherwise specified)
Parameter
Symbol
Reference Voltage (Pin4)
VREF
Test Conditions
Typ
Max
Unit
1.9
2.1
2.3
V
–
5.3
–
kΩ
0.9
1.0
1.1
–
125
–
–
1.0
–
mA
IREF = 0mA
Reference Output Resistance (Pin4)
IREF = 0µA to 50µA
Norton Amplifier Mirror Gain(Pin5, Pin6)
IBIAS ^ 20µA
NPN Transistor DC Gain (Pin9, Pin10)
Min
hFE
Function Generator Feedback Bias Current
(Pin1)
V1 = 5.1V
Drive Voltage Extremes, Sine and Cosine
(Pin2, Pin12)
ILOAD = 20mA
±4.0
±4.5
–
V
Sine Output Voltage with Zero Input (Pin2)
V8 = VREF
–350
0
+350
mV
Function Generator Linearity
FSD = 305°
–
–
±1.7
%FSD
Function Generator Gain
k
Meter Deflection/∆V8
50.75 53.75 56.75
Pin Connection Diagram
Common 1
14 GND
Sine Output 2
13 VCC
N.C. 3
12 Cosine Output
N.C. 4
11 8.5V Reg
Inverting Input 5
10 Signal Input
Non–Inverting Input 6
9 Pulse Train
GND 7
8 Norton Amp Out
14
8
1
7
.785 (19.95)
Max
.300
(7.62)
.200 (5.08)
Max
.100 (2.45)
.600 (15.24)
.099 (2.5) Min
°/V
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