The AD7476/AD7477/AD7478 are, respectively, 12-bit, 10-bit, and 8-bit, high speed, low power, successive approximation ADCs. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. Each part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 6 MHz.
The conversion process and data acquisition are controlled using CS the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and the conversion is initiated at this point. There are no pipeline delays associated with these parts.
The AD7476/AD7477/AD7478 use advanced design techniques to achieve very low power dissipation at high throughput rates. The reference for the parts is taken internally from VDD. This allows the widest dynamic input range to the ADC. Thus, the analog input range for the parts are 0 V to VDD. The conversion rate is determined by the SCLK.
|Title||Content Type||File Type|
|AD7476/AD7477/AD7478: 1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SOT-23 Data Sheet (Rev F, 02/2009) (pdf, 942 kB)||Data Sheets|
|AD7476-EP: 12-Bit ADC in 6-Lead SOT-23 (Rev 0, 08/2010) (pdf, 177 kB)||Data Sheets|
|AD7476-DSCC: Microcircuit, Digital-linear, 12-Bit (V62/11611-01XE) (Rev A, 07/2011) (pdf)||Data Sheets|
|AN-1229: AD5383 Channel Monitor Function (pdf, 91 kB)||Application Notes|
|AN-1226: AD5382 Channel Monitor Function (pdf, 134 kB)||Application Notes|
|AN-1223: Output Channel Monitoring Using the AD5380 Multichannel DAC (pdf, 83 kB)||Application Notes|
|AN-1227: AD5381 Channel Monitor Function (pdf, 78 kB)||Application Notes|
|AN-1219: Power-Off Protected Data Acquisition Signal Chain Using Fault-Protected CMOS Switches (pdf, 162 kB)||Application Notes|
|AN-1141: Powering a Dual Supply Precision ADC with Switching Regulators (pdf, 640 kB)||Application Notes|
AN-931: Understanding PulSAR ADC Support Circuitry
(pdf, 299 kB)
This application note discusses in general the pitfalls that occur regularly when using SAR ADCs and, more importantly, how to easily prevent them.
|AN-932: Power Supply Sequencing (pdf, 95 kB)||Application Notes|
|AN-877: Interfacing to High Speed ADCs via SPI (pdf, 1594 kB)||Application Notes|
|AN-935: Designing an ADC Transformer-Coupled Front End (pdf, 363 kB)||Application Notes|
|AN-742: Frequency Domain Response of Switched-Capacitor ADCs (pdf, 401 kB)||Application Notes|
EE-139: Interfacing the ADSP-2191 to an AD7476 via the SPI Port
(pdf, 271 kB)
|CN0303:MEMS-Based Vibration Analyzer with Frequency Response Compensation (pdf, 275 kB)||Circuit Note|
|CN-0030: AD5390/AD5391/AD5392 Channel Monitor Function (pdf, 82 kB)||Circuit Note|
|The Data Conversion Handbook||Design Handbooks||HTML|
|MT-031: Grounding Data Converters and Solving the Mystery of (pdf, 144 kB)||Tutorials|
|MT-002: What the Nyquist Criterion Means to Your Sampled Data System Design (pdf, 152 kB)||Tutorials|
|MT-001: Taking the Mystery out of the Infamous Formula, "SNR=6.02N + 1.76dB," and Why You Should Care (pdf, 94 kB)||Tutorials|
|MS-2210: Designing Power Supplies for High Speed ADC (pdf, 327 kB)||Technical Articles|
|MS-2022: Seven Steps to Successful Analog-to-Digital Signal Conversion (Noise Calculation for Proper Signal Conditioning) (pdf, 277 kB)||Technical Articles|
|MS-2124: Understanding AC Behaviors of High Speed ADCs (pdf, 276 kB)||Technical Articles|
Nine Often Overlooked ADC Specifications
(pdf, 445 kB)
Analog-to-digital converters (ADCs) have many specifications; some are more important for a given application than others. Understanding these specifications and controlling external devices affecting the ADC will lead to better performance.
SAR ADC & Driver Quick-Match Guide
(pdf, 251 kB)
Find drivers for ADI's most popular single-ended and differential SAR ADCs based on your specific application conditions.
|Product Selection Guide|
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog
(pdf, 1885 kB)
8- to 18-Bit SAR ADCs with Sample Rates up to 3 MSPS -- The latest additions to ADI’s ADC portfolio offer unrivaled functionality in terms of channel count and power supply voltage, optimal power/speed ratios, and the smallest packages to meet the demands of any data acquisition application, including portable, industrial, medical, wireless, and communications.
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
|Title||Content Type||File Type|
|AD74xx - No-OS Driver for Renesas Microcontroller Platforms||Device Drivers||HTML|
|AD74xx - No-OS Driver for Microchip Microcontroller Platforms||Device Drivers||HTML|
|AD7476A IIO Single Channel Serial ADC Linux Driver (Wiki Site)||Device Drivers||HTML|
Recommended Input Buffer Amplifiers for the AD7476
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