ADS7056 14-Bit 2.5MSPS Ultra-Low-Power Ultra-Small-Size SAR ADC With SPI Interface | TI.com

ADS7056 (ACTIVE)

14-Bit 2.5MSPS Ultra-Low-Power Ultra-Small-Size SAR ADC With SPI Interface

 

Description

The ADS7056 is a 14-bit, 2.5-MSPS, analog-to-digital converter (ADC). The device includes a capacitor-based, successive-approximation register (SAR) ADC that supports a wide analog input voltage range (0 V to AVDD, for AVDD in the range of 2.35 V to 3.6 V).

The SPI-compatible serial interface is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interfacing to a variety of host controllers. The ADS7056 complies with the JESD8-7A standard for a normal DVDD range (1.65 V to 1.95 V).

The ADS7056 is available in an 8-pin, miniature, X2QFN package and is specified over the extended industrial temperature range (–40°C to +125°C). Miniature form-factor and extremely low-power consumption make this device suitable for space-constrained and battery-powered applications.

Features

  • 2.5-MSPS Throughput
  • Ultra-Small Size SAR ADC:
    • X2QFN-8 Package with 2.25-mm2 Footprint
  • Wide Operating Range:
    • AVDD: 2.35 V to 3.6 V
    • DVDD: 1.65 V to 3.6 V (Independent of AVDD)
    • Temperature Range: –40°C to +125°C
  • Unipolar Input Range: 0 V to AVDD
  • Excellent Performance:
    • 14-Bit NMC DNL, ±2-LSB INL
    • 74.5-dB SINAD at 2-kHz
    • 73.7-dB SINAD at 1-MHz
  • Ultra-Low Power Consumption:
    • 3.5 mW at 2.5-MSPS with 3.3-V AVDD
    • 158 µW at 100-kSPS with 3.3-V AVDD
  • Integrated Offset Calibration
  • SPI-Compatible Serial Interface: 60-MHz
  • JESD8-7A Compliant Digital I/O

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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
ADS7056 ADS7046 ADS7047 ADS7057 ADS7142 ADS7279 ADS7890 ADS7891 ADS7924 ADS7950
14     12     12     14     12
16    
14     14     14     12     12    
2500     3000     3000     2500     140     1000     125     3000     100     1000    
1     1     1     1     2     1     1     1     4     4    
SPI     SPI     SPI     SPI     I2C     Serial     SPI     Parallel     I2C     SPI    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 125    
X2QFN | 8     X2QFN | 8     X2QFN | 8     X2QFN | 8     X2QFN | 10     QFN | 16
TSSOP | 16    
TQFP | 48     TQFP | 48     WQFN | 16     TSSOP | 30
VQFN | 24    
2.00 | 1ku     1.50 | 1ku     1.50 | 1ku     2.50 | 1ku     0.85 | 1ku     4.20 | 1ku     11.50 | 1ku     13.15 | 1ku     1.25 | 1ku     2.07 | 1ku    
3.5     3.8     4     1.5     0.0009     13.7     45     85     0.5     11.5    
8X2QFN: 2 mm2: 1.5 x 1.5 (X2QFN | 8)     8X2QFN: 2 mm2: 1.5 x 1.5 (X2QFN | 8)     8X2QFN: 2 mm2: 1.5 x 1.5 (X2QFN | 8)     8X2QFN: 2 mm2: 1.5 x 1.5 (X2QFN | 8)     10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)     16QFN: 16 mm2: 4 x 4 (QFN | 16)
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)    
48TQFP: 81 mm2: 9 x 9 (TQFP | 48)     48TQFP: 81 mm2: 9 x 9 (TQFP | 48)     16WQFN: 9 mm2: 3 x 3 (WQFN | 16)     30TSSOP: 50 mm2: 6.4 x 7.8 (TSSOP | 30)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
SAR     SAR     SAR     SAR     SAR     SAR     SAR     SAR     SAR     SAR    
Single-Ended     Single-Ended     Differential     Differential     Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Single-Ended     Single-Ended