CA5160M96(2003) Просмотр технического описания (PDF) - Intersil

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Компоненты Описание

производитель

CA5160M96
(Rev.:2003)

4MHz, BiMOS Microprocessor Operational Amplifier with MOSFET Input/CMOS Output

Intersil 

10kΩ

+15V

3

+

7

6

0.01µF

2-

4

5

1

100kΩ

OFFSET

ADJUST

2kΩ

0.1µF

FIGURE 7A. SINGLE SUPPLY FOLLOWER

CA5160

Precision Voltage-Controlled Oscillator

The circuit diagram of a precision voltage-controlled

oscillator is shown in Figure 10. The oscillator operates with

a tracking error on the order of 0.02% and a temperature

coefficient of 0.01%/oC. A multivibrator (A1) generates

pulses of constant amplitude (V) and width (T2). Since the

output (Terminal 6) of A1 (a CA5130) can swing within about

10mV of either supply-rail, the output pulse amplitude (V) is

essentially equal to V+. The average output voltage

(EAVG = V T2/T1) is applied to the non-inverting input

terminal of comparator A2 (a CA5160) via an integrating

network R3, C2. Comparator A2 operates to establish circuit

conditions such that EAVG = V1. This circuit condition is

accomplished by feeding an output signal from Terminal 6 of

A2 through R4, D4 to the inverting terminal (Terminal 2) of

A1, thereby adjusting the multivibrator interval, T3.

Voltmeter With High Input Resistance

The voltmeter circuit shown in Figure 11 illustrates an

application in which a number of the CA5160 characteristics

are exploited. Range-switch SW1 is ganged between input

and output circuitry to permit selection of the proper output

voltage for feedback to Terminal 2 via 10kΩ current-limiting

resistor. The circuit is powered by a single 8.4V mercury

battery. With zero input signal, the circuit consumes

somewhat less than 500µA plus the meter current required

to indicate a given voltage. Thus, at full-scale input, the total

0

supply current rises to slightly more than 1500µA.

FIGURE 7B. OUTPUT SIGNAL WITH INPUT SIGNAL RAMPING

0

0

Top Trace: Output

Bottom Trace: Input

FIGURE 7C. OUTPUT-WAVEFORM WITH GROUND-

REFERENCE SINE-WAVE INPUT

FIGURE 7. SINGLE SUPPLY VOLTAGE FOLLOWER WITH

ASSOCIATED WAVEFORMS (e.g., FOR USE IN

SINGLE-SUPPLY D/A CONVERTER; SEE FIGURE 9

IN AN6080)

10

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