ADS7250 (ACTIVE)

SAR ADC, Dual, 750 kSPS, 12 Bit, Simultaneous Sampling

SAR ADC, Dual, 750 kSPS, 12 Bit, Simultaneous Sampling  - ADS7250
 

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)
# 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)
ADS7250 ADS7850 ADS8350
12    14    16   
750    750    750   
2    2    2   
SPI    SPI    SPI   
-40 to 125    -40 to 125    -40 to 125   
WQFN    WQFN    WQFN   
3.00 | 1ku    5.00 | 1ku    8.00 | 1ku   
40    40    40   
16WQFN: 9 mm2: 3 x 3(WQFN)    16WQFN: 9 mm2: 3 x 3(WQFN)    16WQFN: 9 mm2: 3 x 3(WQFN)   
SAR    SAR    SAR   
Pseudo-Differential    Pseudo-Differential    Pseudo-Differential   
Simultaneous Sampling    Simultaneous Sampling    Simultaneous Sampling   
Ext    Ext    Ext   
N/A    N/A    N/A   
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    1.5    2.5   
72.9    81    84.7   
73    81.5    85   
-90    -90    -96   
0.75    0.75    0.75