ADS9224R 3MSPS, Dual, Simultaneous-Sampling SAR ADC w/ Internal Reference, Reference Buffer, and Enhanced SPI | TI.com

ADS9224R (PREVIEW)

3MSPS, Dual, Simultaneous-Sampling SAR ADC w/ Internal Reference, Reference Buffer, and Enhanced SPI

 

Sample Availability

Prototype samples are available (XDS9224RIRHBR and XDS9234RIRHBR). Order Now

Description

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 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).

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.

Features

  • High Resolution, High Throughput:
    • ADS9224R: 16 Bit, 3 MSPS
    • ADS9234R: 14 Bit, 3 MSPS
  • Fast Response Time With Low Latency: 333 ns
  • Higher Performance Over Wide Analog Bandwidth:
    • ADS9224R: 83-dB SINAD at 1.4 MHz
    • ADS9234R: 80-dB SINAD at 1.4 MHz
  • Two Simultaneously Sampled channels
  • Unipolar, Fully Differential Inputs
  • Wide Common-Mode Voltage Range
  • Excellent DC and AC Performance:
    • ADS9224R:
      • 16-Bit NMC DNL, ±2-LSB Max INL
      • 93.5-dB SNR, –110-dB THD
      • 80-dB CMRR
    • ADS9234R:
      • 14-Bit NMC DNL, ±1-LSB Max INL
      • 85.6-dB SNR, –106-dB THD
      • 75-dB CMRR
  • Integrated Reference and Reference Buffers
  • Integrated REFby2 Buffer for Setting Common Mode
  • Integrated Data Averaging
  • Enhanced-SPI Interface for MCUs and FPGAs:
    • Wide Read Cycle to Read Data With MCUs
    • CRT for Data Transfers With Digital Isolators
    • DDR Modes for FPGAs
  • Parallel Byte Mode for Easy Interface
  • Extended Temperature Range: –40°C to +125°C
  • Small Footprint: 5-mm × 5-mm VQFN

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Parametrics Compare all products in Precision ADCs (<=10MSPS)

 
Resolution (Bits)
Sample Rate (Max) (kSPS)
Number of input channels
Interface
Operating temperature range (C)
Package Group
Approx. price (US$)
Power consumption (Typ) (mW)
Package size: mm2:W x L (PKG)
Architecture
Input type
Multi-channel configuration
Reference mode
Features
Input range (Max) (V)
Input range (Min) (V)
Analog voltage AVDD (Min) (V)
Analog voltage AVDD (Max) (V)
Digital supply (Min) (V)
Digital supply (Max) (V)
INL (Max) (+/-LSB)
SINAD (dB)
SNR (dB)
THD (Typ) (dB)
Rating
ADS9224R ADS9234R ADS7253 ADS7853 ADS8353
16     14     12     14     16    
3000     3000     1000     1000     600    
2     2     2     2     2    
SPI     SPI     SPI     SPI     SPI    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
VQFN | 32     VQFN | 32     TSSOP | 16
WQFN | 16    
TSSOP | 16
WQFN | 16    
TSSOP | 16
WQFN | 16    
9.90 | 1ku     6.65 | 1ku     3.50 | 1ku     6.00 | 1ku     9.00 | 1ku    
120     120     45     45     45    
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
SAR     SAR     SAR     SAR     SAR    
Differential     Differential     Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling    
Int     Int     Ext
Int    
Ext
Int    
Ext
Int    
Enhanced SPI     Enhanced SPI     Small Size     Small Size     Small Size    
    5.5     5.5     5.5    
    0     0     0    
4.5     4.5     4.5     4.5     4.5    
5.5     5.5     5.5     5.5     5.5    
1.65     1.65     1.65     1.65     1.65    
5.5     5.5     5.5     5.5     5.5    
2     1     1     2     2.5    
91     85.5     73.4     83.9     88.7    
93.5     85.6     73.5     84     89