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ZL40167 Datasheet(PDF) 2 Page - Zarlink Semiconductor Inc |
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ZL40167 Datasheet(HTML) 2 Page - Zarlink Semiconductor Inc |
2 / 32 page ZL40167 Data Sheet 2 Zarlink Semiconductor Inc. Description The ZL40167 is a low cost voltage feedback opamp capable of driving signals to within 1V of the power supply rails. It features low noise and low distortion accompanied by a high output current which makes it ideally suited for the application as an xDSL line driver. The dual opamp can be connected as a differential line driver delivering signals up to 18.8Vpp swing into a 25 Ω load, fully supporting the peak upstream power levels for upstream full-rate ADSL (Asymmetrical Digital Subscriber Line). The wide bandwidth, high power output and low differential gain and phase figures make the ZL40167 ideally suited for a wide variety of video driver applications. Application Notes The ZL40167 is a high speed, high output current, dual operational amplifier with a high slew rate and low distortion. The device uses conventional voltage feedback for ease of use and more flexibility. These characteristics make the ZL40167 ideal for applications where driving low impedances of 25 to 100 Ω such as xDSL and active filters. The figure below shows a typical ADSL application utilising a 1:2 transformer, the feedback path provides a Gain = +2. Figure 2 - A Typical ADSL Application A class AB output stage allows the ZL40167 to deliver high currents to low impedance loads with low distortion while consuming low quiescent current. Note: the high ESD immunity figure of 4kV may mean that in some designs fewer additional EMC protection components are needed thus reducing total system costs. The ZL40167 is not limited to ADSL applications and can be used as a general purpose opamp configured with either inverting or non-inverting feedback. The figure below shows non-inverting feedback arrangement that has typically been used to obtain the data sheet specifications. 100R Rg Rf1 Rf2 12R5 12R5 |
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