ADS7854 SAR ADC, Dual, 1 MSPS, 14 Bit, Simultaneous Sampling | TI.com

ADS7854 (ACTIVE)

SAR ADC, Dual, 1 MSPS, 14 Bit, Simultaneous Sampling

 

Description

The ADS8354, ADS7854, and ADS7254 belong to a family of pin-compatible, dual, high-speed, simultaneous-sampling, analog-to-digital converters (ADCs) that support fully-differential analog inputs.

Each device includes two individually programmable reference sources that can be used for system-level gain calibration. Also, a flexible serial interface that can operate over a wide power-supply range enables easy communication with a large variety of host controllers. Power consumption for a given throughput can be optimized by using the two low-power modes supported by the device. All devices are fully specified over the extended industrial temperature range (–40°C to 125°C) and are available in pin-compatible, WQFN-16 (3-mm × 3-mm) and TSSOP-16 packages.

Features

  • 16-, 14-, and 12-Bit, Pin-Compatible Family
  • Simultaneous Sampling of Two Channels
  • Supports Fully-Differential Inputs
  • High Speed:
    • ADS8354: 16 Bits, 700 kSPS
    • ADS7854: 14 Bits, 1 MSPS
    • ADS7254: 12 Bits, 1 MSPS
  • Excellent DC Performance:
    • ADS8354:
      • 16-Bit NMC DNL, ±2.5-LSB Max INL
    • ADS7854:
      • 14-Bit NMC DNL, ±1.5-LSB Max INL
    • ADS7254:
      • 12-Bit NMC DNL, ±1-LSB Max INL
  • Excellent AC Performance:
    • ADS8354:
      • 93-dB SNR, –100-dB THD
    • ADS7854:
      • 88-dB SNR, –95-dB THD
    • ADS7254:
      • 72-dB SNR, –90-dB THD
  • Dual, Programmable, and Buffered
    2.5-V Internal Reference
  • Fully-Specified Over the Extended Industrial Temperature Range: –40°C to 125°C
  • Small Footprint:
    WQFN-16 (3-mm × 3-mm) and TSSOP-16

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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
ADS7854 ADS7251 ADS7254 ADS7851 ADS8354
14     12     12     14     16    
1000     2000     1000     1500     700    
2     2     2     2     2    
SPI     SPI     SPI     SPI     SPI    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
TSSOP | 16
WQFN | 16    
WQFN | 16     TSSOP | 16
WQFN | 16    
WQFN | 16     TSSOP | 16
WQFN | 16    
6.50 | 1ku     4.50 | 1ku     4.00 | 1ku     7.00 | 1ku     9.50 | 1ku    
45     55     45     55     45    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
SAR     SAR     SAR     SAR     SAR    
Differential     Differential     Differential     Differential     Differential    
Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling    
Ext
Int    
Int     Ext
Int    
Int     Ext
Int    
Small Size     Small Size     Small Size     Small Size     N/A    
5.5     5.25     5.5     5.25     5.5    
0     0     0     0     0    
4.5     4.75     4.5     4.75     4.5    
5.5     5.25     5.5     5.25     5.5    
1.65     1.65     1.65     1.65     1.65    
5.5     5.25     5.5     5.25     5.5    
1.5     1     1     2     2.5    
84.6     72.9     73.9     82.6     92.2    
85     73     74