ADS7850 SAR ADC, Dual, 750 kSPS, 14 Bit, Simultaneous Sampling | TI.com

ADS7850 (ACTIVE)

SAR ADC, Dual, 750 kSPS, 14 Bit, Simultaneous Sampling

 

Description

The ADS8350, ADS7850, and ADS7250 devices belong to a family of pin-compatible, dual, high-speed, simultaneous-sampling, analog-to-digital converters (ADCs) that support pseudo-differential analog inputs. All devices support a simple serial interface that can operate over a wide power-supply range, enabling easy communication with a large variety of host controllers.

All devices are fully specified over the extended industrial temperature range (–40°C to 125°C) and are available in a pin-compatible, WQFN-16 (3 mm × 3 mm) package.





Features

  • 16-, 14-, and 12-Bit Pin-Compatible Family
  • Simultaneously Samples Two Channels
  • Pseudo-Differential Analog Inputs
  • Fast Throughput: 750 kSPS
  • Excellent DC Performance:
    • Linearity:
      • ADS8350:
        16-Bit NMC DNL, ±2.5 LSB, Max INL
      • ADS7850:
        14-Bit NMC DNL, ±1.5 LSB, Max INL
      • ADS7250:
        12-Bit NMC DNL, ±1 LSB, Max INL
  • Excellent AC Performance:
    • ADS8350: 85-dB SNR, –96-dB THD
    • ADS7850: 81-dB SNR, –90-dB THD
    • ADS7250: 73-dB SNR, –88-dB THD
  • Simple Serial Interface
  • Fully-Specified Over 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 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
ADS7850 ADS7250 ADS8350
14     12     16    
750     750     750    
2     2     2    
SPI     SPI     SPI    
-40 to 125     -40 to 125     -40 to 125    
WQFN | 16     WQFN | 16     WQFN | 16    
5.00 | 1ku     3.00 | 1ku     8.00 | 1ku    
40     40     40    
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)     16WQFN: 9 mm2: 3 x 3 (WQFN | 16)     16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
SAR     SAR     SAR    
Pseudo-Differential     Pseudo-Differential     Pseudo-Differential    
Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling    
Ext     Ext     Ext    
Small Size     Small Size     Small Size    
5.5     5.5     5.5    
0     0     0    
4.5     4.5     4.5    
5.5     5.5     5.5    
1.65     1.65     1.65    
5.5     5.5     5.5    
1.5     1     2.5    
81     72.9     84.7    
81.5     73     85    
-90     -90     -96    
Catalog     Catalog     Catalog