ADS7800 12-Bit 3us Sampling Analog-to-Digital Converter | TI.com

ADS7800 (ACTIVE)

12-Bit 3us Sampling Analog-to-Digital Converter

 

Description

The ADS7800 is a complete 12-bit sampling analog-to-digital converter using state-of-the-art CMOS structures. It contains a complete 12-bit successive approximation A/D converter with internal sample/hold, reference, clock, digital interface for microprocessor control, and three-state output drivers.

The ADS7800 is specified at a 333kHz sampling rate. Conversion time is factory set for 2.70µs max over temperature, and the high speed sampling input stage insures a total acquisition and conversion time of 3µs max over temperature. Precision, laser-trimmed scaling resistors provide industry-standard input ranges of ±5V or ±10V.

AC and DC performance are completely specified. Two grades based on linearity and dynamic performance are available to provide the optimum price/performance fit in a wide range of applications.

The 24-pin ADS7800 is available in plastic and side-braze hermetic 0.3" wide DIPs, and in an SOIC package. It operates from a +5V supply and either a –12V or –15V supply. The ADS7800 is available in grades specified over 0°C to +70°C and –40°C to +85°C temperature ranges.

Features

  • 333k SAMPLES PER SECOND
  • STANDARD ±10V AND ±5V INPUT RANGES
  • DC PERFORMANCE OVER TEMP:
    • No Missing Codes
    • 1/2LSB Integral Linearity Error
    • 3/4LSB Differential Linearity Error
  • AC PERFORMANCE OVER TEMP:
    • 72dB Signal-to-Noise Ratio
    • 80dB Spurious-free Dynamic Range
    • –80dB Total Harmonic Distortion
  • INTERNAL SAMPLE/HOLD, REFERENCE, CLOCK, AND THREE-STATE OUTPUTS
  • POWER DISSIPATION: 215mW max
  • PACKAGE:
    • 24-Pin Single-Wide DIP
    • 24-Lead SOIC

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
ADS7800
12    
333    
1    
Parallel    
-40 to 85    
SOIC | 24    
34.56 | 1ku    
135    
24SOIC: 160 mm2: 10.3 x 15.5 (SOIC | 24)    
SAR    
Single-Ended    
   
Int    
   
10    
-10    
4.75    
5.25    
4.75    
5.25    
0.5    
72    
73    
-80    
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