ADAQ4224

発売前

ADAQ4224

24-Bit, 2 MSPS, μModule Data Acquisition Solution

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製品モデル 1

1Ku当たりの価格

価格は未定

特長

Highly integrated data acquisition solution
- Differential PGIA with selectable input range
- Input ranges for 5 V VREF: ±15 V, ±9 V, ±2.25 V, ±0.75 V
- Wide input common-mode voltage range up to −8 V/+10 V
- Gain error: ±0.05% FS typical
- Gain error drift: ±4 ppm/°C maximum
High density, 14 mm × 9 mm, 0.8 mm pitch, 178-ball CSP BGA
- 4× footprint reduction vs discrete solution
- On-board reference buffer with an internal VCM generation
Combined precision AC and DC performance
- Total system dynamic range up to 128 dB typical
- Throughput: 2 MSPS, no pipeline delay

Guaranteed 24-bit no missing codes
INL: ±1 ppm typical
SINAD: 106 dB typical (VREF = 5 V), f_IN = 1 kHz, G = 1/3
Input bias current: −30 pA typical
Common-mode rejection ratio: 95 dB typical
Zero error drift: ±3.1 μV/°C maximum

Total power dissipation: 420 mW typical at 2 MSPS
Electrically isolated, 1.8 V I²C-compatible temperature sensor
Flexi-SPI digital interface
- 1, 2, or 4 SDO lanes allows slower SCK
- Echo clock mode simplifies use of digital isolator
- Compatible with 1.2 V to 1.8 V logic
PGIA gain control (A0, A1) interface

製品概要

The ADAQ4224 is a μModule^® precision data acquisition (DAQ) signal chain solution that reduces the development cycle of a precision measurement system by transferring the signal chain design challenge of component selection, optimization, and layout from the designer to the device. With a guaranteed maximum ±TBD ppm INL and no missing codes at 24 bits, the ADAQ4224 achieves unparalleled precision from −40°C to +105°C.

Using system-in-package (SIP) technology, the ADAQ4224 combines the common signal processing blocks required in a data acquisition solution in a small footprint, 14 mm × 9mm, 0.8 mm pitch, 178-ball CSP_BGA package.

The ADAQ4224 integrates the following:

A low noise, high bandwidth programmable gain instrumentation amplifier (PGIA)
A low noise anti-aliasing filter
A low noise, low distortion, high bandwidth ADC driver
A high precision 24-bit, 2 MSPS successive approximation register (SAR) ADC
An electrically isolated, I2C compatible temperature sensor with excellent accuracy of ±1°C maximum.
Performance critical passives

The ADAQ4224 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. Integrating the critical power supply and reference bypass capacitors reduce sensitivity to the system level board layout. Reducing the solution footprint enables addition of more functions within the system and hence the smaller form factor instruments without sacrificing performance.

The system integration solves many design challenges while the μModule still provides the flexibility of a configurable PGIA to allow gain or attenuation adjustments, as well as supports the acquisition of both single-ended and differential signals. The fast settling of the PGIA and 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 digital features include Flexi-SPI serial peripheral interface (SPI), which allow data access via multiple SPI modes as well as offset correction, gain adjustment, and averaging and reduce burden on the host processor. A wide data clocking window, multiple SDO lanes, and optional DDR data clocking reduce the serial clock frequency while operating at full speed of 2 MSPS and make it easier to isolate the DAQ solution, which reduces power dissipation and EMI. Echo clock mode and host clock mode of the ADAQ4224 relax the timing requirements and simplify the use of digital isolators.

The Flexi-SPI, PGIA gain control and I²C-compatible temperature sensor serial user interface is compatible with 1.2 V to 1.8 V, 2.5 V, 3 V, or 5 V logic, using a separate VIO supply. The ADAQ4224 operation is specified from −40°C to +105°C.

APPLICATIONS

Automatic test equipment
Machine automation
Process controls
Medical and industrial instrumentation
Digital control loops