MAX4451ESA

The MAX4451ESA is one member of the MAX4451 series.It has the following features including (1)ultra-small SC70-5, SOT23-5, and SOT23-8 packages,(2)single +4.5V to +11V operation,(3)input common-mode range extends beyond VEE,(4)rail-to-rail outputs.

The MAX4451ESA dual op amps are unity-gain-stable devices that combine high-speed performance with Rail-to-Rail® outputs. Both devices operate from a +4.5V to +11V single supply or from ±2.25V to ±5.5V dual supplies. The common-mode input voltage range extends beyond the negative power-supply rail (ground in single-supply applications).The MAX4451ESA require only 6.5mA of quiescent supply current per op amp while achieving a 210MHz -3dB bandwidth and a 485V/s slew rate. Both devices are an excellent solution in low-power/lowvoltage systems that require wide bandwidth, such as video, communications, and instrumentation.Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or at any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The MAX4451ESA is single-supply, rail-to-rail,voltage-feedback amplifiers that employ current-feedback techniques to achieve 485V/s slew rates and 210MHz bandwidths. Excellent harmonic distortion and differential gain/phase performance make these amplifiers an ideal choice for a wide variety of video and RF signal-processing applications.Select the gain-setting feedback (RF) and input (RG) esistor values to fit your application. Large resistor values increase voltage noise and interact with the amplifier's input and PC board capacitance. This can generate undesirable poles and zeros and decrease bandwidth or cause oscillations.The MAX4451ESA is optimized for AC performance.They are not designed to drive highly reactive loads, which decrease phase margin and may produce excessive ringing and oscillation. Figure 2 shows a circuit that eliminates this problem. Figure 3 is a graph of the optimal isolation resistor (RS) vs. capacitive load.Figure 4 shows how a capacitive load causes excessive peaking of the amplifier's frequency response if the capacitor is not isolated from the amplifier by a resistor.