12-bit, 8-channel, 1MSPS, SAR ADC with Internal Reference and Internal Temperature Sensor - ADS8028

ADS8028 (ACTIVE)

12-bit, 8-channel, 1MSPS, SAR ADC with Internal Reference and Internal Temperature Sensor

Description

The ADS8028 is a 12-bit analog-to-digital converter (ADC), capable of operating at sampling speeds up to 1 MSPS. The device is based on a successive approximation register (SAR) core and provides an inherent sample-and-hold (SH) front-end.

In addition to having eight analog input channels, the ADS8028 offers an internal temperature sensor with 0.25°C resolution and an internal voltage reference. A nine-channel internal multiplexer enables multiple channels to be selected (including the internal temperature sensor) that are indefinitely scanned in a sequential manner. A simple SPI-compatible serial interface provides easy communication and control between the device and host controller. The digital supply can operate from 1.65 V to 5.25 V, enabling direct interface with a wide range of processors and controllers.

At full speed of 1 MSPS, the ADS8028 dissipates only 17 mW. The device offers flexible power-down modes to save power when conversions are not being performed. The ADS8028 performance is specified over the extended industrial temperature range of –40°C to +125°C.

The ADS8028 is ideal for demanding measurement applications, such as sensor output monitoring, power-supply monitoring, and printed circuit board (PCB) hot-spot analysis, and is available in a small form-factor QFN-20 package.

Features

  • Outstanding Performance:
    • Throughput: Up to 1 MSPS
    • No Missing Codes: 12 Bits
    • INL: ±0.5 LSB
    • SNR: 72 dB
  • Highly Integrated:
    • Eight Analog Inputs
    • High-Resolution Internal Temperature Sensor
    • Nine-Channel Multiplexer with Channel Sequencer
    • Low-Drift Internal Voltage Reference
  • Wide Supply Range:
    • Analog Supply (AVDD): 2.7 V to 5.25 V
    • Digital Supply (DVDD): 1.65 V to 5.25 V
  • Low Power:
    • 17 mW at 1 MSPS
    • Flexible Power-Down Modes
  • SPI™-Compatible Serial Interface: 20 MHz
  • Small Footprint: 4-mm × 4-mm, Thin QFN-20

View more

Parametrics Compare all products in Precision ADC (<=10MSPS)

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
Multi-Channel Configuration
Input Range (Min) (V)
Input Range (Max) (V)
Interface
Analog Voltage AV/DD (Min) (V)
Analog Voltage AV/DD (Max) (V)
Architecture
Integrated Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
Input Type
THD (Typ) (dB)
INL (Max) (+/-LSB)
SNR (dB)
Reference Mode
ADS8028
12    
1MSPS    
8    
Multiplexed    
0    
5.25    
Serial SPI    
2.7    
5.25    
SAR    
Temp Sensor    
Catalog    
-40 to 125    
20QFN    
3.25 | 1ku    
Single-Ended    
-82    
1    
72    
Ext
Int    


WEBENCH® ADS8028 Reference Selector


     

Series Voltage Reference Selector

Related products

Part # Name Product Family Comments
OPA836   Very Low Power, Rail to Rail out, Negative Rail in, VFB Op Amp   OPERATIONAL AMPLIFIER - HIGH SPEED AMPLIFIER    Very Low Power, Rail-to-Rail out,Very Low Power, Rail to Rail out, Negative Rail in, VFB Op Amp  
REF5025   Low Noise, Very Low Drift, Precision Voltage Reference   VOLTAGE REFERENCE - SERIES VOLTAGE REFERENCE    Low Noise, Very Low Drift, 2.5V Precision Voltage Reference  
Click Here