ADS8910B (ACTIVE)

ADS8910B 18-Bit, 1-MSPS, SAR ADC with internal reference buffer, internal LDO & multiSPI interface

ADS8910B 18-Bit, 1-MSPS, SAR ADC with internal reference buffer, internal LDO & multiSPI interface - ADS8910B
 

Description

The ADS8910B, ADS8912B, and ADS8914B (ADS891xB) belong to a family of pin-to-pin compatible, high-speed, single-channel, high-precision, 18-bit successive approximation register (SAR) analog-to-digital convertors (ADCs) with an integrated reference buffer and integrated low-dropout regulator (LDO). The device family includes the ADS890xB (20-bit) and ADS892xB (16-bit) resolution variants.

The ADS891xB boost analog performance while maintaining high-resolution data transfer by using TI’s enhanced-SPI feature. Enhanced-SPI enables the ADS89xxB to achieve high throughput at lower clock speeds, thereby simplifying the board layout and lowering system cost. Enhanced-SPI also simplifies clocking-in of data, thereby making this device an excellent choice for applications involving FPGAs, DSPs. The ADS89xxB is compatible with a standard SPI Interface.

The ADS891xB 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.

Features

  • Resolution: 18-Bits
  • High Sample Rate With No Latency Output:
    • ADS8910B: 1-MSPS
    • ADS8912B: 500-kSPS
    • ADS8914B: 250-kSPS
  • Integrated LDO Enables Single-Supply Operation
  • Low-Power Reference Buffer With No Droop
  • Excellent AC and DC Performance:
    • SNR: 102.5-dB, THD: –125-dB
    • INL: ±0.5-LSB
    • DNL: ±0.2-LSB, 18-Bit No-Missing-Codes
  • Wide Input Range:
    • Unipolar Differential Input Range: ±VREF
    • VREF Input Range: 2.5-V to 5-V
  • Single-Supply, Low-Power Operation
    (Includes Internal Reference Buffer and LDO)
    • ADS8910B : 21-mW at 1-MSPS
    • ADS8912B : 16-mW at 500-kSPS
    • ADS8914B : 14-mW at 250-kSPS
  • Enhanced-SPI Digital Interface
    • Interface SCLK: 20-MHz at 1-MSPS
    • Configurable Data Parity Output
  • 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)
# Input Channels
Multi-Channel Configuration
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
ADS8910B ADS8881 ADS8900B ADS8902B ADS8904B ADS8912B ADS8914B ADS8920B ADS8922B ADS8924B
18    18    20    20    20    18    18    16    16    16   
1    1    1    1    1    1    1    1    1    1   
N/A    N/A    N/A    N/A    N/A    N/A    N/A    N/A    N/A    N/A   
Differential    Differential    Differential    Differential    Differential    Differential    Differential    Differential    Differential    Differential   
21    5.5    21    16    14    16    14    21    16    14   
-5    -5    -5    -5    -5    -5    -5    -5    -5    -5   
5    5    5    5    5    5    5    5    5    5   
SPI    SPI    SPI    SPI    SPI    SPI    SPI    SPI    SPI    SPI   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
Daisy-Chainable
Oscillator   
3    2.7    3    3    3    3    3    3    3    3   
5.5    3.6    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5   
SAR    SAR    SAR    SAR    SAR    SAR    SAR    SAR    SAR    SAR   
-40 to 125    -40 to 85
0 to 70   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
24VQFN    10VSON
10VSSOP   
24VQFN    24VQFN    24VQFN    24VQFN    24VQFN    24VQFN    24VQFN    24VQFN   
-125    -115    -125    -125    -125    -125    -125    -125    -125    -125   
102.5    100    104.5    104.5    104.5    102.5    102.5    96.8    96.8    96.8   
Ext    Ext    Ext    Ext    Ext    Ext    Ext    Ext    Ext    Ext