ADS9120 16-Bit, 2.5-MSPS, 15.5-mW, SAR ADC With multiSPI™ Interface | TI.com

ADS9120 (ACTIVE)

16-Bit, 2.5-MSPS, 15.5-mW, SAR ADC With multiSPI™ Interface

 

Description

The ADS9120 is a 16-bit, 2.5-MSPS, successive approximation register (SAR) analog-to-digital converter (ADC) with enhanced performance features. The high throughput enables developers to oversample the input signal to improve dynamic range and accuracy of the measurement. The ADS9110 is a pin-compatible, 18-bit, 2-MSPS variant of the ADS9120.

The ADS9120 boosts analog performance while maintaining high-resolution data transfer by using TI’s enhanced SPI feature. Enhanced SPI enables the ADS9120 to achieve high throughput at lower clock speeds, thereby simplifying board layout and lowering system cost.

Enhanced SPI also simplifies the host clocking-in of data, thereby making the device ideal for applications involving FPGAs and DSPs. The ADS9120 is compatible with a standard SPI Interface. The ADS9120 has an internal data parity feature that can be appended to the ADC data output. ADC data validation by the host, using parity bits, improves system reliability.

The device supports JESD8-7A compliant I/Os, the extended industrial temperature range, and is offered in a space-saving, 4-mm × 4-mm, VQFN package.

Features

  • Sample Rate: 2.5 MSPS
  • No Latency Output
  • Excellent DC and AC Performance:
    • INL: ±0.25 LSB
    • DNL: ±0.6 LSB
    • SNR: 96 dB, THD: –118 dB
  • Wide Input Range:
    • Unipolar Differential Input Range: ±VREF
    • VREF Input Range: 2.5 V to 5 V,
      Independent of AVDD
  • Low-Power Dissipation:
    • 9 mW at 2.5 MSPS (AVDD Only)
    • 15.5 mW at 2.5 MSPS (Total)
    • Flexible Low-Power Modes Enable Power Scaling with Throughput
  • Enhanced-SPI (multiSPI™) Digital Interface
  • JESD8-7A-Compliant Digital I/O at 1.8-V DVDD
  • Fully-Specified Over Extended Temperature Range: –40°C to +125°C
  • Small Footprint: 4-mm × 4-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
ADS9120 ADS9110
16     18    
2500     2000    
1     1    
SPI     SPI    
-40 to 125     -40 to 85    
VQFN | 24     VQFN | 24    
9.95 | 1ku     13.95 | 1ku    
15     15    
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
SAR     SAR    
Differential     Differential    
   
   
Ext     Ext    
Daisy-Chainable
Oscillator    
Daisy-Chainable
Oscillator    
5     5    
-5     -5    
1.65     1.65    
1.95     1.95    
1.65     1.65    
1.95     1.95    
0.6     1.5    
96     99.9    
96     100    
-118     -118    
Catalog     Catalog