ADS7046 12-Bit, 3MSPS, Single-Ended Input, Small-Size Low-Power SAR ADC | TI.com

ADS7046 (ACTIVE)

12-Bit, 3MSPS, Single-Ended Input, Small-Size Low-Power SAR ADC

12-Bit, 3MSPS, Single-Ended Input, Small-Size Low-Power SAR ADC - ADS7046
 

Description

The ADS7046 device belongs to a family of pin-to-pin compatible, high-speed, low-power, single-channel successive-approximation register (SAR) type analog-to-digital converters (ADCs). The device family includes multiple resolutions, throughputs, and analog input variants (see Table 1 for a list of devices).

The ADS7046 is a 12-bit, 3-MSPS SAR ADC that supports a single-ended input in the range of 0 V to AVDD, for AVDD in the range of 2.35 V to 3.6 V.

The internal offset calibration feature maintains excellent offset specifications over the entire AVDD and temperature operating range.

The device supports an SPI-compatible serial interface that is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for both 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 ADS7046 complies with the JESD8-7A standard for a normal DVDD range (1.65 V to 1.95 V).

The ADS7046 is available in an 8-pin, small, X2QFN package and is specified over the extended industrial temperature range (–40°C to +125°C). The small form-factor and extremely-low power consumption make this device suitable for space-constrained and battery-powered applications that require high-speed, high-resolution data acquisition.

Features

  • 3-MSPS Throughput
  • Small Package Size:
    • X2QFN-8 Package (1.5 mm × 1.5 mm)
  • Unipolar Input Range: 0 V to AVDD
  • 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
  • Excellent Performance:
    • 12-Bit NMC DNL, ±0.3-LSB INL
    • 71.2-dB SINAD at 2 kHz
    • 69.5-dB SINAD at 1 MHz
  • Low Power Consumption:
    • 3.8 mW at 3 MSPS With 3.3-V AVDD
    • 115 µW at 100 kSPS With 3.3-V AVDD
    • 67 µW at 100 kSPS With 2.5-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)
# 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
Sample Rate (Max) (MSPS)
ADS7046 ADS7042 ADS7047 ADS7052 ADS7054 ADS7056 ADS7057
12     12     12     14     14     14     14    
3000     1000     3000     1000     1000     2500     2500    
1     1     1     1     1     1     1    
SPI     SPI     SPI     SPI     SPI     SPI     SPI    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
X2QFN | 8     VSSOP | 8
X2QFN | 8    
X2QFN | 8     X2QFN | 8     X2QFN | 8     X2QFN | 8     X2QFN | 8    
1.50 | 1ku     0.99 | 1ku     1.50 | 1ku     1.75 | 1ku     1.75 | 1ku     2.00 | 1ku     2.50 | 1ku    
3.8     0.234     4     1.5     3.6     3.5     1.5    
8X2QFN: 2 mm2: 1.5 x 1.5 (X2QFN | 8)     8VSSOP: 6 mm2: 3.1 x 2 (VSSOP | 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)     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)    
SAR     SAR     SAR     SAR     SAR     SAR     SAR    
Single-Ended     Single-Ended     Differential     Single-Ended     Differential     Single-Ended     Differential    
N/A     N/A     N/A     N/A     N/A     N/A     N/A    
Supply     Supply     Supply     Supply     Supply     Supply     Supply    
Small Size     Small Size     Small Size     Small Size     Small Size     Small Size     Small Size    
3.6     3.6     3.6     3.6     3.6     3.6     3.6    
0     0     -3.6     0     -3.6     0     -3.6    
2.35