ADS7861 Dual, 500kHz, 12-Bit, 2+2 Ch, Simultaneous Sampling Analog-To-Digital Converter | TI.com

ADS7861 (ACTIVE)

Dual, 500kHz, 12-Bit, 2+2 Ch, Simultaneous Sampling Analog-To-Digital Converter

 

Description

The ADS7861 is a dual, 12-bit, 500kHz, Analog-to-Digital (A/D) converter with four fully differential input channels grouped into two pairs for high speed, simultaneous signal acquisition. Inputs to the sample-and-hold amplifiers are fully differential and are maintained differential to the input of the A/D converter. This provides excellent common-mode rejection of 80dB at 50kHz which is important in high noise environments.

The ADS7861 offers a high-speed, dual serial interface and control inputs to minimize software overhead. The output data for each channel is available as a 12-bit word. The ADS7861 is offered in both an SSOP-24 and a QFN-32 package and is fully specified over the -40°C to +125°C operating range.

Features

  • 4 INPUT CHANNELS
  • FULLY DIFFERENTIAL INPUTS
  • 2µs TOTAL THROUGHPUT PER CHANNEL
  • NO MISSING CODES
  • 1MHz EFFECTIVE SAMPLING RATE
  • LOW POWER: 40mW
  • SSI SERIAL INTERFACE
  • OPERATING TEMPERATURE RANGE: 40°C to +125°C
  • APPLICATIONS
    • MOTOR CONTROL
    • MULTI-AXIS POSITIONING SYSTEMS
    • 3-PHASE POWER CONTROL

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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)
THD (Typ) (dB)
Rating
ADS7861
12    
500    
4    
Serial    
-40 to 125    
SSOP | 24
VQFN | 32    
4.93 | 1ku    
25    
24SSOP: 52 mm2: 6 x 8.65 (SSOP | 24)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    
SAR    
Differential    
Simultaneous Sampling    
Ext
Int    
   
5.25    
0    
4.75    
5.25    
4.75    
5.25    
1    
70    
-76    
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