Analog Devices Manuals

This application note describes how to create and verify serial bus protocols using One Technology products.

The movement towards lower power supply voltages is driven by the demand for reduced power consumption and fewer power supply voltages in systems. Lowering power supply voltages has advantages including lower power consumption, space savings, and potentially eliminating the need for cooling fans. However, transitioning from traditional power supply voltages of ±15 V and ±12 V to lower voltages like ±5 V and +5 V and +3.3 V requires circuit designers to understand that designing in this new environment is more than finding components that can operate at lower voltages. Lowering the power supply voltage of an op amp reduces the signal swings and the required headroom between the signal and the rail.

This application note documents the filter specifications and detailed plots of the internal filters of the ADV7190/ ADV7191, ADV7192 and ADV7194 video encoders. All the above-mentioned devices provide two luma low-pass filters, two luma notch filters, an extended SSAF™ (Super Sub Alias Filter) luma low-pass filter, a luma CIF and a luma QCIF filter, five chroma low-pass filters, a Chroma CIF and a Chroma QCIF filter. The SSAF filter, as can be seen in Figure 5, provides a sharp stopband attenuation that enables studio quality video playback on modern TVs, giving optimal horizontal line resolution. Additionally, it is possible to change the response of the SSAF filter in the passband in using the programmable gain/attenuation feature or sharpness control as can be seen in Figures 6, 7 and 8. Overall, there are six programmable gain responses (Figure 7) and six programmable attenuation responses (Figure 8) in the range of –4 dB to +4 dB available. These responses can be programmed over the I2C® interface.

This application note introduces Analog Devices' Active Filter Design Tool, which helps engineers design various all-pole active filters

The main difference between the AD9887 and AD9887A is that the AD9887A adds HDCP-related features, such as HDCP key detection, HDCP address, HDCP slave port address, MDA/MCL three-state control, etc. In addition, the AD9887A has two additional control pins, which are used to control Pin 49 function (CTL3 or MCL) and MDA/MCL three-state control.

AN-731 APPLICATION NOTE introduces AD9985's automatic offset calibration feature. AD9985 is a pin-for-pin replacement of the AD9883A that includes an automatic offset calibration feature. It can self-adjust to eliminate any offset errors in its own ADC channels as well as any offset errors present on the incoming graphics or video signals.

This application note describes how to use the AD9981 to design a dual chip solution to achieve UXGA resolutions.

This is an application note about AD9980, introducing the auto-offset function of AD9980

The AD9880 is a product with a fully programmable color space conversion matrix (CSC). It supports various color space formats such as RGB, YUV, YCrCb, and others, and has the features of high-speed operation and signal integrity maintenance.

This application note describes a method for compressing large sets of I2C scripts for microcontroller platforms. The information herein is targeted for applications where the user needs to put over 50 scripts to the memory of one single microcontroller. This method provides excellent results for sets of scripts containing more than 200 scripts for more than six devices. In such a case, the user requires a lot of scripts and needs to use this method to compress them. The method is easy to use and can be easily ported to any microcontroller.

The document introduces the reference circuits of Circuit Note CN-0213 Circuits from the Lab™, which are engineered and tested to help solve analog, mixed-signal, and RF design challenges. The devices connected/referenced in the document include AD7685 16-Bit, 250 kSPS PulSAR® ADC in MSOP/QFN, AD8226 Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier, AD8275 G = 0.2, Level Translation, 16-Bit ADC Driver, ADP1720 50 mA, High Voltage, Micropower Linear Regulator, and ADR439 Ultralow Noise XFET® Voltage Reference. The document also mentions that these circuits have been designed and built by Analog Devices engineers and tested and verified in a lab environment. However, users are responsible for testing the circuit and determining its suitability and applicability for their own use and application.

Circuit Note CN-0237 is a reference circuit for Analog Devices' ultralow power, low distortion differential ADC driver ADA4940-1/ADA4940-2, 18-bit, 1 MSPS PulSAR ADC AD7982 and 5 V precision bandgap voltage reference ADR395 to help solve today's analog, mixed-signal and RF design challenges.