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EL2228CYZ-T13 Datasheet(PDF) 9 Page - Intersil Corporation |
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EL2228CYZ-T13 Datasheet(HTML) 9 Page - Intersil Corporation |
9 / 10 page Pin Descriptions 8-PIN MSOP 8-PIN SO PIN NAME PIN FUNCTION EQUIVALENT CIRCUIT 1 1 VOUTA Output VOUT VS+ CIRCUIT 1 2 2 VINA- Input VIN- VIN+ VS+ VS- CIRCUIT 2 3 3 VINA+ Input Reference Circuit 2 4 4 VS- Supply 5 5 VINB+ Input 6 6 VINB- Input Reference Circuit 2 7 7 VOUTB Output Reference Circuit 1 8 8 VS+ Supply 9 Applications Information Product Description The EL2228 is a dual voltage feedback operational amplifier designed especially for DMT ADSL and other applications requiring very low voltage and current noise. It also features low distortion while drawing moderately low supply current and is built on Elantec's proprietary high-speed complementary bipolar process. The EL2228 uses a classical voltage-feedback topology which allows them to be used in a variety of applications where current-feedback amplifiers are not appropriate because of restrictions placed upon the feedback element used with the amplifier. The conventional topology of the EL2228 allows, for example, a capacitor to be placed in the feedback path, making it an excellent choice for applications such as active filters, sample-and-holds, or integrators. Single-Supply Operation The EL2228 was designed to have a wide input and output voltage range. This design also makes the EL2228 an excellent choice for single-supply operation. Using a single positive supply, the lower input voltage range is within 300mV of ground (RL = 500Ω), and the lower output voltage range is within 875mV of ground. Upper input voltage range reaches 3.6V, and output voltage range reaches 3.8V with a 5V supply and RL = 500Ω. This results in a 2.625V output swing on a single 5V supply. This wide output voltage range also allows single-supply operation with a supply voltage as high as 28V. Gain-Bandwidth Product and the -3dB Bandwidth The EL2228 has a gain-bandwidth product of 40MHz while using only 5mA of supply current per amplifier. For gains greater than 1, their closed-loop -3dB bandwidth is approximately equal to the gain-bandwidth product divided by the noise gain of the circuit. For gains of 1, higher-order poles in the amplifiers' transfer function contribute to even higher closed loop bandwidths. For example, the EL2228 have a -3dB bandwidth of 80MHz at a gain of 1, dropping to 9MHz at a gain of 5. It is important to note that the EL2228 is designed so that this “extra” bandwidth in low-gain EL2228 |
Similar Part No. - EL2228CYZ-T13 |
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Similar Description - EL2228CYZ-T13 |
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