Customisable signal chain improves system performance, says Analog Devices
A precision medium bandwidth signal chain platform introduced by Analog Devices, is claimed to improve system performance for signal bandwidths of DC to approximately 500kHz for industrial and instrumentation applications.
Composed of a variety of complete signal chains with customisable options and a curated suite of development tools, such as LTspice simulations, it simplifies design, said Analog Devices.
Included is the AD7768-1, DC to 204kHz, dynamic signal analysis, precision 24-bit ADC with power scaling, supplied in a 28-lead LFCSP (measuring 4.0 x 5.0 x 0.75mm w/ EP).
The AD8605 is a precision, low noise, CMOS, RRIO op amp, in a five-lead SOT-23 package.
The ADA4807-1 Zero-drift, single-supply, rail-to-rail I/O op amp, the ADAQ4003 18bit, 2Msample per second, μModule data acquisition device and the LTC2606 16bit rail-to-rail DAC with I2C interface complete the signal chain platform.
The robust signal chains, designed for both time and frequency measurement precision, allow for end systems that can accept inputs from the widest array of sensor and measurement modalities from IEPE vibration and acceleration to temperature and pressure. The signal chains also support engineers when designing for the most demanding precision instrumentation challenges in areas such as condition based monitoring (CbM), large channel count or distributed data acquisition systems (DAQ), position and motor control and sonar.
The signal chains included within the platform feature precision and power component selections that prioritise combined AC and DC accuracy design requirements, with options for single or multi-channel systems as well as higher channel density for the largest channel count systems. Examples of precision medium bandwidth signal chain options provided include those that allow scaling of AC precision versus power for instrumentation, low latency options for motor control and position sensing, and highest density options using signal chain µModule SIP solutions or multi-channel converters. Large channel count system designers can choose from signal chains where channel synchronisation is a priority, whether in channel-isolated or non-isolated systems.
To optimise precision medium bandwidth, the platform optimises signal chain resolution and gain which delivers the 16- to 24bit accuracy required, across a wide range of sensor bandwidths, said the company. It is applicable to small and large amplitudes.
There is also the flexibility to prioritise between noise performance, signal bandwidth, and power. This enables reuse of optimum layout and multiple use cases of the circuitry with simple software updates.
There are also options for higher channel densities which give the ability to scale the precision measurements to distributed or centralised large channel count scenarios.
