SAR ADC, Dual, 1.5 MSPS, 14 Bit, Simultaneous Sampling - ADS7851

ADS7851 (ACTIVE)

SAR ADC, Dual, 1.5 MSPS, 14 Bit, Simultaneous Sampling

 

Description

The ADS7251 and ADS7851 belong to a family of pin-compatible, dual, high-speed, simultaneous-sampling, analog-to-digital converters (ADCs) that support fully-differential analog inputs and feature two independent internal voltage references. The ADS7251 offers 12-bit resolution and up to 2-MSPS sampling speed. The ADS7851 offers 14-bit resolution and up to 1.5-MSPS sampling speed.

The devices support a wide digital supply voltage range, allowing easy communication with a variety of digital host controllers using a simple, serial interface. Both devices are fully specified over the extended industrial temperature range (–40°C to +125°C) and are available in a pin-compatible, space-saving, WQFN-16 (3-mm × 3-mm) package.

Features

  • 12- and 14-Bit Pin-Compatible Family
  • Simultaneous Sampling of Two Channels
  • Supports Fully-Differential Analog Inputs
  • Independent Internal Reference (per ADC)
  • High Speed:
    • Up to 2 MSPS with the ADS7251 (12-Bit)
    • Up to 1.5 MSPS with the ADS7851 (14-Bit)
  • Excellent Performance:
    • ADS7251:
      • SNR: 73 dB
      • INL: ±1 LSB
    • ADS7851:
      • SNR: 83.5 dB
      • INL: ±2 LSB
  • Fully-Specified Over the Extended Industrial Temperature Range: –40°C to +125°C
  • Small Footprint: WQFN-16 (3 mm × 3 mm)

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

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
Input Type
Power Consumption (Typ) (mW)
Input Range (Min) (V)
Input Range (Max) (V)
Interface
Integrated Features
Analog Voltage AV/DD (Min) (V)
Analog Voltage AV/DD (Max) (V)
Architecture
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
THD (Typ) (dB)
INL (Max) (+/-LSB)
SNR (dB)
Reference Mode
ADS7851
14    
1.5 MSPS    
2    
Differential    
55    
0    
5.25    
Serial SPI    
N/A    
4.75    
5.25    
SAR    
-40 to 125    
16WQFN    
7.00 | 1ku    
-90    
2    
83.5    
Int    

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