AD4008
16-Bit, 2 MSPS/1 MSPS/500 kSPS, Precision, Pseudo Differential, SAR ADCs
Top
New Content (1)
Overview
Features and Benefits
- Easy Drive expands signal chain flexibility
- High-Z mode significantly reduces signal chain settling requirements
- Fast conversion phase extends the ADC acquisition time
- Input overvoltage protection clamp sinks up to 50 mA
- High performance
- First conversion accurate, no latency or pipeline delay
- Guaranteed 16-bit, no missing codes
- Throughput: 2 MSPS/1 MSPS/500 kSPS options
- INL: ±1.0 LSB maximum
- SNR: 93 dB at fIN = 1 kHz, VREF = 5 V
- THD: −115 dB at fIN = 1 kHz; −95 dB at fIN = 100 kHz
- Pseudo differential input range
- Flexible external reference voltage range (2.4 V to 5.1 V)
- Low power
- Single 1.8 V supply operation with 1.71 V to 5.5 V logic interface
- 2.5 mW at 500 kSPS (VDD only)
- 70 μW at 10 kSPS, 14 mW typical at 2 MSPS (total power)
- SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
- 10-lead packages: 3 mm × 3 mm LFCSP, 3 mm × 4.90 mm MSOP
- Guaranteed operation: −40°C to +125°C
Product Details
The AD4000/AD4004/AD4008 are high accuracy, high speed, low power, 16-bit, precision successive approximation register (SAR) analog-to-digital converters (ADCs). These ADCs incorporate Easy Drive features, such as high-Z mode and an extended acquisition phase, which provide signal chain architectural flexibility by expanding the range of companion circuitry that can be paired with these ADCs.
Operating from a single power supply, VDD, these ADCs allow the reference voltage, VREF, to be applied externally and set independently of the supply voltage. With fast device throughput up to 2 MSPS, the AD4000/AD4004/AD4008 can accurately capture high-frequency signals and implement oversampling techniques to alleviate the challenges associated with antialias filter designs. Additionally, the power consumption of these ADCs scales linearly with throughput.
The AD4000/AD4004/AD4008 eliminate the need for a negative supply to the ADC driver amplifier by employing input span compression, while preserving access to the full ADC code range. Furthermore, the input overvoltage clamp protects the ADC inputs against overvoltage events, minimizing disturbances on the reference pin and eliminating the need for external protection diodes.
By reducing the serial peripheral interface (SPI) clock rate requirements, the AD4000/AD4004/AD4008 reduce digital input and output power consumption, broaden digital host options, and simplify the task of sending data across digital isolation. The SPI-compatible serial user interface supports 1.8 V, 2.5 V, 3.3 V, and 5 V logic by using the separate VIO logic supply.
APPLICATIONS
- Automated test equipment
- Machine automation
- Medical equipment
- Battery-powered equipment
- Precision data acquisition systems
- Instrumentation and control systems
Product Categories
Markets and Technologies
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
-
Next-Generation SAR ADC Addresses Pain Points of Precision Data Acquisition Signal Chain Design12/1/2016 Analog Dialogue
Software & Systems Requirements
FPGA/HDL
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
AD4008
Precision ADC Driver Tool
The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input
Product Recommendations
AD4008 Companion Parts
Recommended Driver Amplifiers
- For low input bias current, low noise applications: ADA4610-1.
- For high frequency, low noise, low distortion applications: ADA4897-1, ADA4932-1.
- For precision, lowest power applications: ADA4096-2, ADA4692-2, ADA4077-1, ADA4084-1.
- For precision, low power, low distortion applications: ADA4807-1.
Recommended External Voltage References
Recommended Digital Isolators
Recommended Low Dropout Regulators and Switchers
Recommended MEMS Accelerometers
- For low noise, low drift, low power 3-axis accelerometer: ADXL354.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD4008BCPZ-RL7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| AD4008BRMZ | Material Declaration | Reliability Data | 10-Lead MSOP | |
| AD4008BRMZ-RL7 | Material Declaration | Reliability Data | 10-Lead MSOP | |
| Wafer Fabrication Data |
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.