ADS7834 12-Bit High Speed Low Power Sampling Analog-to-Digital Converter | TI.com

ADS7834 (ACTIVE)

12-Bit High Speed Low Power Sampling Analog-to-Digital Converter

 

Description

The ADS7834 is a 12-bit sampling analog-to-digital converter (A/D) complete with sample/hold, internal 2.5V reference, and synchronous serial interface. Typical power dissipation is 11mW at a 500kHz throughput rate. The device can be placed into a power-down mode that reduces dissipation to just 2.5mW. The input range is zero to the reference voltage, and the internal reference can be overdriven by an external voltage.

Low power, small size, and high speed make the ADS7834 ideal for battery-operated systems such as wireless communication devices, portable multi-channel data loggers, and spectrum analyzers. The serial interface also provides low-cost isolation for remote data acquisition. The ADS7834 is available in a plastic mini-DIP-8 or an MSOP-8 package and is ensured over the –40°C to +85°C temperature range.

Features

  • 500kHz THROUGHPUT RATE
  • 2.5V INTERNAL REFERENCE
  • LOW POWER: 11mW
  • SINGLE-SUPPLY +5V OPERATION
  • DIFFERENTIAL INPUT
  • SERIAL INTERFACE
  • 12-BITS NO MISSING CODES
  • MINI-DIP-8 AND MSOP-8
  • 0V TO VREF INPUT RANGE
  • APPLICATIONS
    • BATTERY-OPERATED SYSTEMS
    • DIGITAL SIGNAL PROCESSING
    • HIGH-SPEED DATA ACQUISITION
    • WIRELESS COMMUNICATION SYSTEMS

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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
ADS7834 ADS7818 ADS7835
12     12     12    
500     500     500    
1     1     1    
Serial     Serial     Serial    
-40 to 85     -40 to 85     -40 to 85    
VSSOP | 8     PDIP | 8
VSSOP | 8    
VSSOP | 8    
2.57 | 1ku     2.63 | 1ku     2.89 | 1ku    
11     11     17.5    
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     See datasheet (PDIP)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
SAR     SAR     SAR    
Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Single-Ended    
   
   
   
Ext
Int    
Ext
Int    
Ext
Int    
   
   
   
2.5     5.25     2.5    
0     0     -2.5    
4.75     4.75     4.75    
5.25     5.25     5.25    
4.75     4.75     4.75    
5.25     5.25     5.25    
1     1     1    
72     72     72    
72     72     72    
-78     -78     -78    
Catalog     Catalog     Catalog    

Design tool

WEBENCH® Designer ADS7834