AD4858
Buffered, 8-Channel Simultaneous Sampling, 20-Bit 1 MSPS DAS
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Features
- Complete 20-bit data acquisition system
- Simultaneous sampling of 8 internally buffered channels
- 1 MSPS per channel throughput
- Differential, wide common-mode range inputs
- ±75 pA typical input leakage at 25°C
- Full-scale input step settling time < 300 ns
- Integrated reference and reference buffer (4.096 V)
- Integrated supply decoupling capacitors
- 45 mW per channel at 1 MSPS, power scales with throughput
- Minimal external signal conditioning
- Seamless high dynamic range
- Per sample, per channel automatic gain ranging
- Maintains ppm-level INL
- Per channel SoftSpan input ranges, bipolar or unipolar
- ±40 V, ±25 V, ±20 V, ±12.5 V, ±10 V, ±6.25 V, ±5 V, ±2.5 V
- 0 V to 40 V, 25 V, 20 V, 12.5 V, 10 V, 6.25 V, 5 V, 2.5 V
- Rail-to-rail input overdrive tolerance
- High performance
- INL: ±160 μV typical (±40 V range)
- SNR: 97.2 dB single-conversion typical (±40 V range)
- DR: 111.4 dB single-conversion typical (±40 V range)
- THD: −117 dB typical (±40 V range)
- CMRR: 120 dB typical
- Digital flexibility
- SPI CMOS (0.9 V to 5.25 V) and LVDS serial input and output
- Optional oversampling with 24-bit digital averaging
- Optional offset, gain and phase correction
- 7.00 mm × 7.00 mm, 64-ball BGA full solution footprint
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The AD4858 is a fully buffered, 8-channel simultaneous sampling, 20-bit, 1 MSPS data acquisition system (DAS) with differential, wide common-mode range inputs. Its functional architecture is shown in Figure 1 in the data sheet. Operating from a 5 V low voltage supply, flexible input buffer supplies, and using the precision low drift internal reference and reference buffer, the AD4858 allows the SoftSpan range of each channel to be independently configured to match the native application signal swing, minimizing additional external signal conditioning. To further maximize single-conversion dynamic range, the AD4858 incorporates seamless high dynamic range (SHDR) technology. When enabled, the input signal path gain of the channel is automatically optimized on a sample-by-sample basis, minimizing converter noise on each sample without impacting linearity.
The 11 MHz bandwidth, picoamp input analog buffers, wide input common-mode range, and 120 dB common-mode rejection ratio (CMRR) of the AD4858 allow the DAS to directly digitize input signals with arbitrary swings on INx+ and INx−. Its input signal flexibility, combined with ±160 μV integral nonlinearity (INL), no missing codes at 20 bits, 97.2 dB signal to noise ratio (SNR), and 111.4 dB dynamic range (DR), make the AD4858 an ideal choice for applications requiring high accuracy, throughput, and precision in a compact solution footprint. Enabling 24-bit oversampling offers further SNR and dynamic range improvements. Optional per channel offset, gain, and phase adjustment provide the ability to calibrate and remove system-level errors upstream to the DAS.
The AD4858 features a serial peripheral interface (SPI) register configuration bus (0.9 V to 5.25 V), and supports both low voltage differential signaling buses (LVDS) and complementary metal-oxidize semiconductor (CMOS) conversion data output buses, selectable using the LVDS/CMOS pin. Between one and eight lines of data output can be employed in CMOS mode, allowing the user to optimize bus width and throughput.
The 7.00 mm × 7.00 mm, 64-ball, ball grid array (BGA) of the AD4858 includes all critical power supply and reference bypass capacitors, minimizing full solution footprint and component count, and reducing sensitivity to application printed circuit board (PCB) layout. It operates over an extended industrial temperature range of −40°C to +125°C.
APPLICATIONS
- Automatic test equipment
- Avionics and aerospace
- Instrumentation and control systems
- Semiconductor manufacturing
- Test and measurement
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Submit your question below and we will return the best answer from ADI’s knowledge database:
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AD4858
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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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD4858BBCZ |
64-Lead BGA (7 mm x 7 mm x 1.42 mm)
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| AD4858BBCZ-RL-13 |
64-Lead BGA (7 mm x 7 mm x 1.42 mm)
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- AD4858BBCZ
- Pin/Package Drawing
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64-Lead BGA (7 mm x 7 mm x 1.42 mm)
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- AD4858BBCZ-RL-13
- Pin/Package Drawing
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64-Lead BGA (7 mm x 7 mm x 1.42 mm)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Software & Part Ecosystem
Device Drivers
Looking for Evaluation Software? You can find it here
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
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Internal Power Switch Boost Regulators2 |
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RECOMMENDED FOR NEW DESIGNS |
Low IQ Boost/SEPIC/Inverting Converter with 1A, 60V Switch |
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RECOMMENDED FOR NEW DESIGNS |
1 A/0.6 A, DC-to-DC Switching Regulator with Independent Positive and Negative Outputs |
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Positive Linear Regulators (LDO)3 |
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RECOMMENDED FOR NEW DESIGNS |
100mA, Low Noise, LDO Micropower Regulators in TSOT-23 |
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PRODUCTION |
Ultralow Noise, 150 mA CMOS Linear Regulator |
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PRODUCTION |
Ultralow Noise, 200 mA, CMOS Linear Regulator |
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Series Voltage References2 |
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PRODUCTION |
0.25ppm Noise, Low Drift Precision References |
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RECOMMENDED FOR NEW DESIGNS |
Ultra-Low-Noise, High-Accuracy 4.096V Voltage Reference |
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The Precision Toolbox is an evaluation software, made available in MATLAB, that allows configuring and capturing data with ADI’s precision data converters. To get started evaluating with the Precision Toolbox:
Step 1: Setup the evaluation hardware as described in the hardware setup guide.
Step 2: Install the Precision Toolbox and its dependencies. Refer to the Precision Toolbox wiki.
Can't find the software or driver you need?
Request a Driver/SoftwareEvaluation Kits 1
EVAL-AD4858
Evaluating the AD4858 8-Channel Simultaneous Sampling, 20-Bit 1 MSPS Data Acquisition System
Features and Benefits
- Full featured evaluation board for the AD4858
- Eight input channels available through SMA connectors
- On-board reference circuit and power supplies
- Standalone capability through FMC connector and/or test points
- PC software for control and data analysis of the time and frequency domain
- ZedBoard-compatible
- Compatible with other FMC controller boards
Product Detail
The EVAL-AD4858FMCZ is designed to demonstrate the performance of the AD4858 and provide access to many included configuration options that are accessed via an easy to use ACE plug-in graphical interface. The AD4858 is a fully buffered, 8-channel simultaneous sampling, 20-bit, 1 MSPS data acquisition system (DAS) with differential, wide common mode range inputs.
The EVAL-AD4858FMCZ on-board components include also the following:
- The LTC6655 high precision, low drift, 4.096 V voltage reference (not used by default)
- The LT1761, low noise, 1.8 V, 2.5 V, and 5 V low dropouts (LDOs)
- The LT8330 low quiescent current (IQ) boost converter
For full details on the AD4858, see the AD4858 data sheet, which must be consulted in conjunction with the user guide when using the EVAL-AD4858FMCZ.
This evaluation board can also be used to evaluate the performance of the AD4856.
Tools & Simulations 3
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Lt Spice
IBIS Model 1
Design Tool
