AD744 DATASHEET PDF

Pin Count Pin Count is the number of pins, balls, or pads on the device. Precision, Ns Settling Bifet Op Amp — Analog Devices Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain. The AD is internally compensated for stable operation as a unity gain inverter or as a noninverting amplifier with a gain of two or greater. International prices may differ due to local duties, taxes, fees and exchange datashdet.

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It offers the excellent dc characteristics of the AD BiFET family with enhanced settling, slew rate, and bandwidth. The AD also offers the option of using custom compensation to achieve exceptional capacitive load drive capability.

The single-pole response of the AD provides fast settling: ns to 0. This feature, combined with its high dc precision, makes it suitable for use as a buffer amplifier for bit, bit or bit DACs and ADCs. It is also an excellent choice for use in active filters in bit, bit and bit data acquisition systems. The AD is internally compensated for stable operation as a unity gain inverter or as a noninverting amplifier with a gain of two or greater.

External compensation may be applied to the AD for stable operation as a unity gain follower. Alternatively, external decompensation may be used to increase the gain bandwidth of the AD to over MHz at high gains.

The AD is available in five performance grades. The AD offers exceptional dynamic response. It settles to 0. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P. Box , Norwood, MA , U. Supply2 vs. Refer to Table II for optimum compensation while driving a capacitive load. Specifications subject to change without notice. All min and max specifications are guaranteed. Indefinite Differential Input Voltage. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied.

Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Dimensions shown in inches and mm. Input Voltage Swing vs. Supply Voltage Figure 2. Output Voltage Swing vs. Supply Voltage Figure 3. Load Resistance Figure 4. Quiescent Current vs. Supply Voltage Figure 5. Input Bias Current vs.

Temperature Figure 6. Output Impedance vs. Frequency Figure 7. Common-Mode Voltage Figure 8. Short Circuit Current Limit vs. Temperature Figure 9. Gain Bandwidth Product vs. Temperature —4— REV. C AD Figure Open-Loop Gain and Phase Margin vs. Open Loop Gain and Phase Margin vs. Open-Loop Gain vs. Supply Voltage Figure Common-Mode and Power Supply Rejection vs. Frequency Figure Large Signal Frequency Response Figure Output Swing and Error vs.

Settling Time Figure Total Harmonic Distortion vs. Slew Rate vs. Settling Time vs. Closed Loop Voltage Gain Figure Offset Null Configuration Figure 22a. Unity-Gain Follower Figure 22b. Unity-Gain Inverter Figure 23b. This is especially important when driving a significant resistive or capacitive load, since all current delivered to the load comes from the power supplies.

Multiple high quality bypass capacitors are recommended for each power supply line in any critical application. A minimum bypass capacitance of 0. A Tektronix oscilloscope preamp type 7A26 was carefully chosen because it recovers from the approximately 0.

Amplifier A2 is a very high-speed FET-input op amp; it provides a voltage gain of 10, amplifying the error signal output of the AD under test. AD 1F —VS 0.

The input of the settling time fixture is driven by a flat-top pulse generator. The error signal output from the false summing node of A1, the AD under test, is clamped, amplified by op amp A2 and then clamped again. Lower Trace: Amplified Error Voltage 0. This is accomplished by connecting a capacitor between Pins 5 and 8. Figure 28, a simplified schematic of the AD, shows where this capacitor is connected.

This feature is useful because it allows the AD to be used as a unity gain voltage follower. It also enables the amplifier to drive capacitive loads up to pF and greater. Figure 30 shows the AD configured as a unity gain voltage follower. In this case, a minimum compensation capacitor of 5 pF is necessary for stable operation.

Larger compensation capacitors can be used for driving larger capacitive loads. It also gives the slew rate and bandwidth that will be achieved for each case. Therefore, when trying to maximize the speed of the amplifier, the value of CCOMP should be minimized. CCOMP can also be used to slow the amplifier to a point where the slew rate is perfectly symmetrical and well controlled. Figure 29 summarizes the effect of external compensation on slew rate and bandwidth.

In these cases, external compensation is not necessary for stable operation. However, compensation may be applied to drive capacitive loads above 50 pF. Table II gives recommended CCOMP values, along with expected slew rates and bandwidths for a variety of load conditions and gains for the circuits in Figures 31 and Gain Bandwidth and Slew Rate vs.

Various Load Conditions for the Circuits of Figures 31 and Figure The ADA, for example, is specified to settle to 12 bits in less than ns, with a current output. However, in many applications, a voltage output is desirable, and it would be useful — perhaps essential — that this I-to-V conversion be accomplished without increasing the settling time or without degrading the accuracy of the DAC.

Since the DAC is The instrumentation amplifier circuit shown in Figure 36 can provide a range of gains from unity up to and higher. The only penalty associated with this method is a small bandwidth reduction at low gains. This technique can be used in the circuit of Figure 36 to achieve stable operation at gains from unity to over

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AD744 DATASHEET PDF

It offers the excellent dc characteristics of the AD BiFET family with enhanced settling, slew rate, and bandwidth. The AD also offers the option of using custom compensation to achieve exceptional capacitive load drive capability. The single-pole response of the AD provides fast settling: ns to 0. This feature, combined with its high dc precision, makes it suitable for use as a buffer amplifier for bit, bit or bit DACs and ADCs. It is also an excellent choice for use in active filters in bit, bit and bit data acquisition systems.

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AD744 Analog Devices, AD744 Datasheet

International prices may vary due to local duties, taxes, fees and exchange rates. Temperature Range This is the acceptable operating range of the device. It is also an excellent choice for use in active filters in bit, bit and bit data acquisition systems. Pin Count is the number of pins, balls, or pads on the device. Precision, Ns Settling Bifet Op Amp — Analog Devices Other models listed in the table may still be available if they have a status that is not obsolete. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

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Analog Filter Wizard Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. Pricing displayed is based on 1-piece. International prices may vary due to local duties, taxes, fees and exchange rates. If a model is not available for web samples, look for notes on the product page that indicate how to request samples or Contact ADI. The model is currently being produced, and generally available for purchase and sampling.

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