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)
Sample Rate (Max) (kSPS)
# 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)
Sample Rate (Max) (MSPS)
ADS8910B ADS8881 ADS8900B ADS8902B ADS8904B ADS8912B ADS8914B ADS8920B ADS8922B ADS8924B
18    18    20    20    20    18    18    16    16    16   
1000    1000    1000    500    250    500    250    1000    500    250   
1    1    1    1    1    1    1    1    1    1   
SPI    SPI    SPI    SPI    SPI    SPI    SPI    SPI    SPI    SPI   
-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   
VQFN    VSON
VSSOP   
VQFN    VQFN    VQFN    VQFN    VQFN    VQFN    VQFN    VQFN   
15.95 | 1ku    11.95 | 1ku    24.95 | 1ku    15.95 | 1ku    9.95 | 1ku    11.95 | 1ku    7.95 | 1ku    11.95 | 1ku    7.95 | 1ku    5.95 | 1ku   
21    5.5    21    16    14    16    14    21    16    14   
24VQFN: 16 mm2: 4 x 4(VQFN)    10VSON: 9 mm2: 3 x 3(VSON)
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
24VQFN: 16 mm2: 4 x 4(VQFN)    24VQFN: 16 mm2: 4 x 4(VQFN)    24VQFN: 16 mm2: 4 x 4(VQFN)    24VQFN: 16 mm2: 4 x 4(VQFN)    24VQFN: 16 mm2: 4 x 4(VQFN)    24VQFN: 16 mm2: 4 x 4(VQFN)    24VQFN: 16 mm2: 4 x 4(VQFN)    24VQFN: 16 mm2: 4 x 4(VQFN)   
SAR    SAR    SAR    SAR    SAR    SAR    SAR    SAR    SAR    SAR   
Differential    Differential    Differential    Differential    Differential    Differential    Differential    Differential    Differential    Differential   
N/A    N/A    N/A    N/A    N/A    N/A    N/A    N/A    N/A    N/A   
Ext    Ext    Ext    Ext    Ext    Ext    Ext    Ext    Ext    Ext   
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   
5    5    5    5    5    5    5    5    5    5   
-5    -5    -5    -5    -5    -5    -5    -5    -5    -5   
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   
1.65    1.65    1.65    1.65    1.65    1.65    1.65    1.65    1.65    1.65   
5.5    3.6    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5   
1.5    2    3.9    3.9    3.9    1.5    1.5    0.5    0.5    0.5   
102.48    99.9    103.9    103.9    103.9    102.48    102.48    95.9    95.9    95.9   
102.5    100    104.5    104.5    104.5    102.5    102.5    96.8    96.8    96.8   
-125    -115    -125    -125    -125    -125    -125    -125    -125    -125   
1    1    1    0.5    0.25    0.5    0.25    1    0.5    0.25