18-Bit, 2MSPS, 15mW SAR ADC With multiSPI™ Digital Interface - ADS9110

ADS9110 (ACTIVE)

18-Bit, 2MSPS, 15mW SAR ADC With multiSPI™ Digital Interface

 

Description

The ADS9110 is an 18-bit, 2-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 ADS9120 is a pin-compatible, 16-bit, 2.5-MSPS variant of the ADS9110.

The ADS9110 boosts analog performance while maintaining high-resolution data transfer by using TI’s enhanced SPI feature. Enhanced SPI enables the ADS9110 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 ADS9110 is compatible with a standard SPI Interface. The ADS9110 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 MSPS
  • No Latency Output
  • Excellent DC and AC Performance:
    • INL: ±0.5 LSB
    • DNL: ±0.75 LSB
    • SNR: 100 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 MSPS (AVDD Only)
    • 15 mW at 2 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) (SPS)
# Input Channels
Input Type
Power Consumption (Typ) (mW)
Input Range (Min) (V)
Input Range (Max) (V)
Interface
Features
Analog Voltage AVDD (Min) (V)
Analog Voltage AVDD (Max) (V)
Architecture
Operating Temperature Range (C)
Pin/Package
THD (Typ) (dB)
SNR (dB)
Reference Mode
ADS9110 ADS9120
18    16   
2000000    2500000   
1    1   
Differential    Differential   
15    15   
-5    -5   
5    5   
SPI    SPI   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
1.65    1.65   
1.95    1.95   
SAR    SAR   
-40 to 85    -40 to 125   
24VQFN    24VQFN   
-118    -118   
100    96   
Ext    Ext