ADS7808 12-Bit 10us Serial CMOS Sampling Analog-to-Digital Converter | TI.com

ADS7808 (ACTIVE)

12-Bit 10us Serial CMOS Sampling Analog-to-Digital Converter

 

Special note

Please see the ADS8508 for an upgraded version of this device.

Description

The ADS7808 is a complete 12-bit sampling analog-to-digital using state-of-the-art CMOS structures. It contains a 12-bit capacitor-based SAR A/D with S/H, reference, clock, and a serial data interface. Data can be output using the internal clock, or can be synchronized to an external data clock. The ADS7808 also provides an output synchronization pulse for ease of use with standard DSP processors.

The ADS7808 is specified at a 100kHz sampling rate, and guaranteed over the full temperature range. Laser-trimmed scaling resistors provide various input ranges including ±10V and 0V to 5V, while an innovative design operates from a single +5V supply, with power dissipation under 100mW.

The ADS7808 is available in a 0.3" SO-20, fully specified for operation over the industrial –40°C to +85°C range.

Features

  • 100kHz SAMPLING RATE
  • 72dB SINAD WITH 45kHz INPUT
  • ±1/2 LSB INL AND DNL
  • SIX SPECIFIED INPUT RANGES
  • SERIAL OUTPUT
  • SINGLE +5V SUPPLY OPERATION
  • PIN-COMPATIBLE WITH 16-BIT ADS7809
  • USES INTERNAL OR EXTERNAL REFERENCE
  • 100mW MAX POWER DISSIPATION
  • 0.3" SO-20
  • SIMPLE DSP INTERFACE

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
ADS7808
12    
100    
1    
Parallel    
-40 to 85    
SOIC | 20    
20.07 | 1ku    
81.5    
20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)    
SAR    
Single-Ended    
   
Ext
Int    
   
10    
-10    
4.75    
5.25    
4.75    
5.25    
0.45    
73    
73    
-90    
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