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EL2170CS-T7 Datasheet(PDF) 9 Page - Intersil Corporation |
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EL2170CS-T7 Datasheet(HTML) 9 Page - Intersil Corporation |
9 / 14 page 9 Typical Performance Curves (Continued) Applications Information Product Description The EL2170, EL2270, and EL2470 are current-feedback operational amplifiers that offer a wide -3dB bandwidth of 70MHz and a low supply current of 1mA per amplifier. All of these products also feature high output current drive. The EL2170 can output 100mA, while the EL2270 and the EL2470 can output 55mA per amplifier. The EL2170, EL2270, and EL2470 work with supply voltages ranging from a single 3V to ±6V, and they are also capable of swinging to within 1V of either supply on the input and the output. Because of their current-feedback topology, the EL2170, EL2270, and EL2470 do not have the normal gain-bandwidth product associated with voltage-feedback operational amplifiers. This allows their -3dB bandwidth to remain relatively constant as closed-loop gain is increased. This combination of high bandwidth and low power, together with aggressive pricing make the EL2170, EL2270, and EL2470 the ideal choice for many low-power/high-bandwidth applications such as portable computing, HDSL, and video processing. For applications where board space is extremely critical, the EL2170 is available in the tiny 5-pin SOT-23 package, which has a footprint 28% the size of an 8-pin SO. The EL2170, EL2270, and EL2470 are each also available in industry standard pinouts in PDIP and SO packages. For single and dual applications with disable, consider the EL2176 (8-pin single) and EL2276 (14-pin dual). If higher speed is required, refer to the EL2180/EL2186 family which provides singles, duals, triples, and quads with 250MHz of bandwidth while consuming 3mA of supply current per amplifier. Power Supply Bypassing and Printed Circuit Board Layout As with any high-frequency device, good printed circuit board layout is necessary for optimum performance. Ground plane construction is highly recommended. Lead lengths should be as short as possible. The power supply pins must be well bypassed to reduce the risk of oscillation. The combination of a 4.7µF tantalum capacitor in parallel with a 0.1µF capacitor has been shown to work well when placed at each supply pin. For good AC performance, parasitic capacitance should be kept to a minimum especially at the inverting input (see the Capacitance at the Inverting Input section). Ground plane construction should be used, but it should be removed from the area near the inverting input to minimize any stray capacitance at that node. Carbon or Metal-Film resistors are 14-Pin Plastic DIP Maximum Power Dissipation vs Ambient Temperature 14-Pin SO Maximum Power Dissipation vs Ambient Temperature Channel Separation vs Frequency 5-Pin Plastic SOT-23 Maximum Power Dissipation vs Ambient Temperature EL2170, EL2270, EL2470 |
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Similar Description - EL2170CS-T7 |
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