Analog Devices Inc. ADAQ4380-4 Quad-Channel Precision DAQ
Analog Devices ADAQ4380-4 Quad-Channel Precision Data Acquisition (DAQ) is a signal chain μModule® solution that reduces the development cycle of a precision measurement system. This solution transfers the signal chain design challenges of optimization, component selection, and layout from the designer to the device.
Using system-in-package (SIP) technology, the ADAQ4380-4 reduces end system component count by combining multiple common signal processing and conditioning blocks into a single device. These blocks include a quad-channel, high-resolution 16-bit, 4MSPS simultaneous sampling SAR ADC, low noise, fully differential ADC driver amplifier, a 3.3V precision voltage reference, low-noise buffer amplifiers, and low-dropout linear regulator.
The Analog Devices ADAQ4380-4 has an on-chip oversampling block to improve the dynamic range and reduce noise at lower bandwidths. The oversampling can boost up to two bits of added resolution. It provides the flexibility of a configurable ADC driver feedback loop to allow four gain and attenuation adjustments and accepts both fully differential or single-ended to differential input configurations.
The conversion result can clock out simultaneously through 4-wire mode for faster throughput or through 1-wire serial mode when slower throughput is allowed. The ADAQ4380-4 is compatible with 1.8V, 2.5V, and 3.3V interfaces using the separate logic supply and is specified to operate over a temperature range of −40°C to +105°C.
Features
- Easy to use μModule data acquisition system
- 11x footprint reduction v.s. discrete solution
- Integrated critical passive components
- 5V single supply operation
- Guaranteed 16-bit, no missing codes
- On-chip oversampling function
- 2-bit resolution boost
- Out-of-range indicator (ALERT)
- INL of ±0.6LSB typical, ±2LSB maximum
- SNR (typical)
- 91.0dB at Gain = 1.0, fIN = 1kHz
- 97.8dB with OSR = x8 at Gain = 1.0, fIN = 1kHz
- Channel-to-channel phase matching of 0.005° typical at fIN = 20kHz
- Integrated high precision reference, 3ppm/°C typical drift
- 0.005% typical gain error
- 0.8ppm/°C typical gain drift
- Integrated internal buffer with VCM generation
- 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 over-range
- Input ranges: ±2V, ±3.3V, ±5.5V, ±11V
- Gain/attenuation: G = 0.3, 0.6, 1.0, and 1.6
- High-speed serial interface
- 8mm x 8mm, 0.8mm pitch, 81-ball CSP_BGA package
Applications
- Lab-grade battery test system
- Motor control current sense
- Motor control position feedback
- Sonar
- Power quality monitoring
- Data acquisition system
- Erbium-Doped Fiber Amplifier (EDFA) applications
- I and Q demodulation
Simplified Block Diagram
Eval Boards
Analog Devices Inc. EV-ADAQ4370, EV-ADAQ4380, & EV-ADAQ4381 Boards
A simple evaluation of the ADAQ4380-4, ADAQ4370-4, & ADAQ4381-4 μModule data acquisition solutions.