ADS7805 16-Bit 10us Sampling CMOS Analog-to-Digital Converter | TI.com

ADS7805 (ACTIVE)

16-Bit 10us Sampling CMOS Analog-to-Digital Converter

 

Special note

Please see the ADS8505 for an upgraded version of this device.

Description

The ADS7805 is a complete 16-bit sampling, Analog-to-Digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 16-bit, capacitor-based, Successive Approximation Register (SAR) A/D converter with Sample-and-Hold (S/H), reference, clock, interface for microprocessor use, and 3-state output drivers.

The ADS7805 is specified at a 100kHz sampling rate and ensured over the full temperature range. Laser-trimmed scaling resistors provide an industry-standard ±10V input range while the innovative design allows operation from a single +5V supply, with power dissipation under 100mW.

The ADS7805 is available in a 0.3" DIP-28 and an SO-28 package. Both are fully specified for operation over the industrial -25°C to +85°C range; however, they will function over the -40°C to +85°C temperature range.

Features

  • 100kHz min SAMPLING RATE
  • STANDARD ±10V INPUT RANGE
  • 86dB min SINAD WITH 20kHz INPUT
  • ±3.0 LSB max INL
  • DNL: 16 Bits No Missing Codes
  • SINGLE +5V SUPPLY OPERATION
  • PIN-COMPATIBLE WITH 12-BIT ADS7804
  • USES INTERNAL OR EXTERNAL REFERENCE
  • FULL PARALLEL DATA OUTPUT
  • 100mW max POWER DISSIPATION
  • 0.3" DIP-28 AND SO-28

Note: Recommended Voltage Reference: REF02 and REF102

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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
ADS7805
16    
100    
1    
Parallel    
-25 to 85    
SOIC | 28    
31.52 | 1ku    
81.5    
28SOIC: 184 mm2: 10.3 x 17.9 (SOIC | 28)    
SAR    
Single-Ended    
   
Ext
Int    
   
10    
-10    
4.75    
5.25    
4.75    
5.25    
3    
86    
86    
-94    
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