ADAQ23878
RECOMMENDED FOR NEW DESIGNS18-Bit, 15 MSPS, μModule Data Acquisition Solution
Part Details
- Integrated fully differential ADC driver with signal scaling
- Wide input common-mode voltage range
- High common-mode rejection
- Single-ended to differential conversion
- Pin selectable input range with overrange
- Input ranges with 4.096 V REFBUF: ±10 V, ±5 V, ±4.096 V, ±2.5 V, and ±1.5 V
- Gain/attenuation options: 0.37, 0.73, 0.87, 1.38, and 2.25
- Critical passive components
- 0.005% precision matched resistor array for FDA
- 9 mm × 9 mm, 0.8 mm pitch, 100-ball CSP_BGA package
- 2.5× footprint reduction vs. discrete solution
- Low power, dynamic power scaling, power-down mode
- 143 mW typical at 15 MSPS
- Throughput: 15 MSPS, no pipeline delay
- INL error: ±3.1 ppm typical, ±6.2 ppm maximum
- (Gain = 0.73, gain = 0.87, gain = 1.38, gain = 2.25)
- SINAD: 90.4 dB typical at 20 kHz (gain = 0.73)
- THD: −117 dB at 1 kHz, −110 dB at 100 kHz (gain = 0.73)
- Gain error: ±0.005%FS typical
- Gain error drift: ±0.13 ppm/°C typical
- On-board reference buffer with VCMO generation
- Serial LVDS interface
- Wide operating temperature range: −40°C to +85°C
The ADAQ23878 is a precision, high speed, μModule® data acquisition solution that reduces the development cycle of a precision measurement systems by transferring the design burden of component selection, optimization, and layout from the designer to the device.
Using System-in-Package (SIP) technology, the ADAQ23878 reduces end system component count by combining multiple common signal processing and conditioning blocks in a single device, including a low noise, fully differential ADC driver (FDA), a stable reference buffer, and a high speed, 18-bit, 15 MSPS successive approximation register (SAR) ADC.
The ADAQ23878 also incorporates the critical passive components with superior matching and drift characteristics using Analog Devices, Inc., iPassive® technology to minimize temperature dependent error sources and to offer optimized performance. The fast settling of the ADC driver stage and no latency of the SAR ADC provide a unique solution for high channel count multiplexed signal chain architectures and control loop applications.
The small footprint, 9 mm × 9 mm BGA package enables smaller form factor instruments without sacrificing performance. The system integration solves many design challenges while the device still provides the flexibility of a configurable ADC driver feedback loop to allow gain or attenuation adjustments, as well as fully differential or single-ended to differential input. A single 5 V supply operation is possible while achieving optimum performance from the device.
The ADAQ23878 features a serial low voltage differential signaling (LVDS) digital interface with one-lane or two-lane output modes, allowing the user to optimize the interface data rate for each application. The specified operation of the ADAQ23878 is from −40°C to +85°C.
APPLICATIONS
- Automatic test equipment
- Data acquisition
- Hardware in the Loop (HiL)
- Power analyzers
- Non-destructive test (acoustic emissions)
- Mass spectrometry
- Travelling wave fault location
- Medical imaging and instruments
Software Resources
Code Examples 1
Evaluation Software 0
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Tools & Simulations
LTspice 2
- ADAQ23878 Demo Circuit – 18-Bit, 15 MSPS, μModule Data Acquisition Solution
- Density Optimized LTspice Signal Chain Simulation
Models for the following parts are available in LTspice:
- ADAQ23878
LTPowerPlanner 1
IBIS Model 1
Signal Chain Designer
Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
Evaluating the ADAQ23878 18-Bit, 15 MSPS, μModule Data Acquisition Solution
Resources
Reference Designs
High Precision, Wide Bandwidth Current Measurement Signal Chain