ADS8910B 18-Bit 1MSPS SAR ADC With Internal Reference Buffer, Internal LDO, and multiSPI™ Interface | TI.com

ADS8910B (ACTIVE)

18-Bit 1MSPS SAR ADC With Internal Reference Buffer, Internal LDO, and multiSPI™ Interface

 

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

All trademarks are the property of their respective owners.

View more

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
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 | 24     VSON | 10
VSSOP | 10    
VQFN | 24     VQFN | 24     VQFN | 24     VQFN | 24     VQFN | 24     VQFN | 24     VQFN | 24     VQFN | 24    
11.97 | 1ku     11.95 | 1ku     24.95 | 1ku     15.95 | 1ku     9.95 | 1ku     8.97 | 1ku     6.97 | 1ku     9.15 | 1ku     6.15 | 1ku     5.15 | 1ku    
21     5.5     21     16     14     16     14     21     16     14    
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     10VSON: 9 mm2: 3 x 3 (VSON | 10)
10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)    
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
SAR     SAR     SAR     SAR     SAR     SAR     SAR     SAR     SAR     SAR    
Differential     Differential     Differential     Differential     Differential     Differential     Differential     Differential     Differential     Differential