ADS9224R Texas instruments

ADS9224R

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ADS9224R

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Описание

The ADS92x4R is a pin-compatible, high-speed, dual, simultaneous-sampling, analog-to-digital converters (ADC) with an integrated reference and reference buffer. The device can operate on a single 5-V supply and supports unipolar, fully differential analog input signals with excellent DC and AC specifications. The device has excellent AC performance with analog input frequencies up to 1.5 MHz, which makes the device suitable for wide-bandwidth data acquisition (DAQ) systems.The device supports SPI-compatible serial (enhanced-SPI) and byte-wide parallel interfaces, making the device easy to pair with a diversity of microcontrollers, digital signal processors (DSPs), and field-programmable gate arrays (FPGAs). This device also supports a data averaging feature that provides an AC performance boost in noisy environments.The device comes in a space-saving, 5-mm × 5-mm, VQFN package. The ADS92x4R is specified for the extended temperature range of –40°C to +125°C.

High resolution, high throughput:
- ADS9224R: 16 bits, 3 MSPS, low latency: 333 ns
- ADS9234R: 14 bits, 3.5 MSPS, low latency: 285 ns
Two unipolar, fully differential simultaneously sampled channels
Excellent DC and AC performance:
- ADS9224R:
  - 16-bit NMC DNL, ±2-LSB max INL
  - 94-dB SNR, –109-dB THD
  - 88-dB SINAD at 1 MHz
- ADS9234R:
  - 14-bit NMC DNL, ±1-LSB max INL
  - 85.6-dB SNR, –106-dB THD
  - 84-dB SINAD at 1 MHz
Feature integration:
- Internal reference and reference buffers
- Internal REFby2 buffer for setting common-mode
- Data averaging
Enhanced-SPI interface for MCUs and FPGAs:
- Wide read cycle to read data with MCUs
- Clock re-timer for data transfers with digital isolators
- DDR modes for FPGAs
- Parallel byte mode for easy interface
Extended temperature range: –40°C to +125°C

Resolution (Bits)	16
Sample rate (max) (ksps)	3000
Number of input channels	2
Interface type	Enhanced SPI, SPI
Architecture	SAR
Input type	Differential
Multichannel configuration	Simultaneous Sampling
Rating	Catalog
Reference mode	Internal
Input voltage range (max) (V)	5.5
Input voltage range (min) (V)	0
Operating temperature range (°C)	-40 to 125
Power consumption (typ) (mW)	120
Analog supply (min) (V)	4.5
Analog supply voltage (max) (V)	5.5
SNR (dB)	93.5
Digital supply (min) (V)	1.65
Digital supply (max) (V)	5.5