Document
NTE864 Integrated Circuit Precision Waveform Generator
Description:
The NTE864 is a precision waveform generator in a 14-Lead DIP type package capable of producing high accuracy sine, square, triangular, sawtooth and pulse waveforms. The frequency (or repetition rate) can be selected externally from 0.001Hz to 300kHz. The frequency of oscillation is highly stable over a wide range of temperature and supply voltage changes. Both full frequency sweeping as well as smaller frequency variations (FM) can be accomplished with an external control voltage. Each of the three basic waveforms, i.e., sinewave, triangle and square wave outputs are available simulta‐ neously.
Applications: D Low Frequency Drift with Temperature: 250ppm/°C D Low Distortion: 1% (Sinewave Output) D High Linearity: 0.1% (Triangle Wave Output) D Wide Frequency Range: 0.001Hz to 300kHz D variable Duty Cycle: 2% to 98% D High Level Outputs: TTL to 28V D Simultaneous Sine, Square, and Triangle Wave Outputs
Absolute Maximum Ratings: (Note 1)
Power Supply Voltage (V- to V+) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36V Input Voltage (Any Pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V- to V+ Input Current (Pin4 and Pin5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA Output Sink Current (Pin3 and Pin9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA Maximum Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C Maximum Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65° to +150°C Maximum Lead Temperature (Soldering, 10s), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C Thermal Resistance, Junction-to-Ambient (Typical, Note 2), RthJA . . . . . . . . . . . . . . . . . . . 115°C/W
Recommended Operating Conditions: Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Note 1. Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at any of these of any other conditions above those indicated in the operational sections of this specification is not implied.
Note 2. RthJA is measured with the component mounted on an elevation PC board in free air.
Electrical Characteristics: (VSUPPLY = ±10V to ±20V, TA = +25°C, RL = 10kΩ unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
General Characteristics
Supply Voltage Single Supply Dual Supplies
Supply Current
VSUPPLY V+
V+, VISUPPLY
VSUPPLY = ±10V, Note 3
+10 - +30
V
±5
- ±15
V
-
12 15
mA
Note 3. RA and RB currents not included.
Electrical Characteristics: (VSUPPLY = ±10V to ±20V, TA = +25°C, RL = 10kΩ unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Frequency Characteristics (All Waveforms)
Max. Frequency of Oscillation Sweep Frequency of FM Input
FM Sweep Range FM Linearity Frequency Drift with Temperature Frequency Drift with Supply Voltage Output Characteristics
fMAX fSWEEP
Δf/ΔT Δf/ΔV
Note 4 10:1 Ratio 0° to +70°C, Note 5 Over Supply Voltage Range
100 -
-
kHz
-
10
-
kHz
- 35:1 -
-
- 0.5 -
%
- 250 - ppm/°C
- 0.05 -
%/V
Square Wave Leakage Current Saturation Voltage Rise Time Fall Time Duty Cycle Adjust
Triangle/Sawtooth/Ramp Amplitude Linearity Output Impedance
Sine-Wave Amplitude THD THD Adjusted
IOLK
VSAT tR tF ΔD
V9 = 30V
ISINK = 2mA RL = 4.7kΩ RL = 4.7kΩ Note 6
VTRIANGLE RTRI = 100kΩ
ZOUT
VSINE THD
IOUT = 5mA
RSINE = 100kΩ RS = 1MΩ, Note 7
-
-
1
μA
- 0.2 0.5
V
- 180 -
ns
-
40
-
ns
2
- 98
%
0.3 0.33 - 0.1 - 200
- x VSUPPLY
-
%
-
Ω
0.2 0.22 - x VSUPPLY
- 2.0 5.0
%
- 1.5 -
%
Note 4. VSUPPLY = 20V; RA and RB = 10kΩ, f = 10kHz nominal; can be extended 1000 to 1. Note 5. Pin7 and Pin8 connected, VSUPPLY = ±10V. Note 6. Not tested, typical value for design purposes only.
Note 7. 82kΩ connected between Pin11 and Pin12, Triangle Duty Cycle set at 50%. (Use RA and RB)
Test Conditions:
Parameter
Supply Current Sweep FM Range (Note 8) Frequency Drift with Temperature Frequency Drift with Supply Voltage (Note 9) Output Amplitude (Note 10)
Sine Triangle Leakage Current (OFF) (Note 11) Saturation Voltage (ON) (Note 11) Rise and Fall Times (Note 6) Duty Cycle Adjust (Note 6) Max Min Triangle Waveform Linearity Total Harmonic Distortion
RA 10kΩ 10kΩ 10kΩ 10kΩ
RB 10kΩ 10kΩ 10kΩ 10kΩ
RL 10kΩ 10kΩ 10kΩ 10kΩ
C
3.3nF 3.3nF 3.3nF 3.3nF
SW1 Closed Open Closed Closed
MEASURE
Current into Pin6 Frequency at Pin9 Frequency at Pin3 Frequency at Pin9
10k.