Features

● Single power operation

● Rail transition (within 3mv)

● Micro power: IQ u003d 20μA/amplifier

● Micro packaging

● Low offset voltage: maximum 125 μV

● It is specified as vs u003d 2.3V to 5.5V

● Single, double and four versions

Application

● Battery power supply instrument chart

● Portable device

● High impedance application

● Optical diode front placement large

OPA336 series micro -power CMOS operational amplifier is the application of battery power to power. And design. They work on a power supply as low as 2.1V and output as rail pairs. Under 100K underload, the voltage is within 3mv. The scope of the co -mode is extended to the ideal single power supply application of negative power. Single, double and four versions have the same specifications to achieve the maximum design flexibility.

In addition to small and low static current (20μA/amplifier), they also have low offset voltage (maximum 125 μV), low input bias current (1PA), and high -opening width gain (115DB). The characteristics of Shuangu and Four Road are characterized by completely independent circuits to reduce string disturbance and avoid interaction.

OPA336 packaging is a micro SOT23-5 surface paste and SO-8 surface paste. OPA2336 has micro MSOP-8 surface installation, SO-8 surface installation and DIP-8 packaging. OPA4336 packaging is the SSOP-16 surface installation that saves space. All prescribed temperature range is -40 ° C to+85 ° C, and the operating temperature is -55 ° C to+125 ° C.

Pointing instructions

Typical features

Unless otherwise explained, otherwise in TA u003d+25 ° C, vs u003d+5V , RL u003d 25K connect to VS/2.

Application information OPA336 series operational amplifier adopts the most advanced 0.6 micron CMOS Craft manufacturing. They have a stable unit gain and are suitable for extensive common applications. 0.01 μF ceramic capacitors should be used to bypass the power. The OPA336 series operational amplifier can prevent the battery voltage from changing reverse.

Working voltage

OPA336 series operational amplifier can work under the power supply of+2.1V to+5.5V, with excellent performance. Without the entire working voltage range, most characteristics remain unchanged. The typical feature shows the parameters of significant changes with the working voltage. The OPA336 series operational amplifier is completely suitable for the working environment of+2.3V to+5.5V; a single limit is suitable for the range of power supply. In addition, many parameters are within the specified temperature range, namely -40 ° C to+85 ° C.

Input voltage

OPA336 series operational amplifier's input consensus range from (V-)-0.2V to (V+)-1V. For normal work, the input should be limited to this range. The absolute maximum input voltage exceeds 300 millivolves. Therefore, although the input that is greater than the input co -mode but less than the maximum input voltage is invalid, it will not cause any damage to the calculator. In addition, unlike other computing amplifiers, the input may exceed the power supply without phase reversal, as shown in Figure 1.

OPA336 series operational amplifier can drive various capacitance loads. However, under certain conditions, all operational amplifiers may become unstable. The configuration, gain, and load value of the operation amplifier are only a few factors to consider when determining the stability.

After the correct configuration, the OPA336 series operational amplifier can drive about 10,000 PF. The computing amplifier of the unit gain structure is most likely to be affected by the capacitance load. The output resistance of the capacitance load and the calculation amplifier and any additional load resistance react, thereby generating a pole in the response, thereby reducing the phase margin. At the unit gain, the OPA336 series of computing amplifiers performed well, and the pure capacitor load was as high as about 300pf. Increasing gain can improve the capacity of the amplifier drive load.

A method of improving the capacitor load driving in the unit gain configuration is to insert a resistor from 50Ω to 100Ω in the feedback circuit, as shown in Figure 3. This reduces the ringing of the large capacitance load while maintaining the accuracy of DC electricity. For example, when RL u003d 25K , the OPA336 series operational amplifier performs well when the capacitance load exceeds 1000PF, as shown in Figure 4. Without RS, the capacitor load driver is usually 350pf, as shown in Figure 5.

Or, the resistor can connect with the output outside the feedback loop.However, if there is a resistance load and a capacitance load in parallel, it will generate a steriler with the series resistance.This will introduce DC (DC) errors at the output end; however, this error may not be important.For example, in the absence of rl u003d 100k and rs u003d 100 output only about 0.1%of errors. FIG. 5 shows the recommended operation area of OPA336.Reducing load resistance usually improves the capacitor load driver.Figure 5 also shows how stability is different with the connection position of the resistance load.When G u003d+1 and RL u003d 10K connect to VS/2, OPA336 can usually drive 500pf.The same load can be grounded to increase the capacitor load to 1000PF.