ADC0804-N 8-Bit µP Compatible A/D Converters | TI.com

ADC0804-N (ACTIVE)

8-Bit µP Compatible A/D Converters

 

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Description

The ADC0801, ADC0802, ADC0803, ADC0804, and ADC0805 devices are CMOS 8-bit successive approximation converters (ADC) that use a differential potentiometric ladder – similar to the 256R products. These converters are designed to allow operation with the NSC800 and INS8080A derivative control bus with Tri-state output latches directly driving the data bus. These ADCs appear like memory locations or I/O ports to the microprocessor and no interfacing logic is needed.

Differential analog voltage inputs allow increasing the common-mode rejection and offsetting the analog zero input voltage value. In addition, the voltage reference input can be adjusted to allow encoding any smaller analog voltage span to the full 8 bits of resolution.

Features

  • Compatible With 8080-µP Derivatives – No
    Interfacing Logic Needed – Access Time 135 ns
  • Easy Interface to All Microprocessors, or Operates
    as a Stand-Alone Deivce
  • Differential Analog Voltage Inputs
  • Logic Inputs and Outputs Meet Both MOS and
    TTL Voltage-Level Specifications
  • Works With 2.5-V (LM336) Voltage Reference
  • On-Chip Clock Generator
  • 0-V to 5-V Analog Input Voltage Range With
    Single 5-V Supply
  • No Zero Adjust Required
  • 0.3-Inch Standard Width 20-Pin DIP Package
  • 20-Pin Molded Chip Carrier or Small Outline
    Package
  • Operates Ratiometrically or With 5 VDC, 2.5 VDC,
    or Analog Span Adjusted Voltage Reference
  • Key Specifications
    • Resolution: 8 Bits
    • Total Error: ±1/4 LSB, ±1/2 LSB and ±1 LSB
    • Conversion Time: 100 µs

Parametrics

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Part number Order 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) SNR (dB) THD (Typ) (dB) Rating
ADC0804-N Order now 8     10     1     Parallel     0 to 70     SOIC | 20     1.25 | 1ku     9.5     20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)     SAR     Differential    
   
Ext
Supply    
   
5.5     0     4.5     5.5     4.5     5.5     1         Catalog    
ADC0831-N Samples not available 8     31.25     1     Microwire (Serial I/O)     -40 to 85     PDIP | 8
SOIC | 14    
1.13 | 1ku     4.5     See datasheet (PDIP)
14SOIC: 93 mm2: 10.325 x 8.9915 (SOIC | 14)    
SAR     Differential    
   
Ext    
   
6.3     0     4.5     6.3     4.5     6.3     1         Catalog    
ADC088S102 Samples not available 8     1000     8     Microwire (Serial I/O)
QSPI
SPI    
-40 to 105     TSSOP | 16     1.50 | 1ku     1.8     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     SAR     Single-Ended     Multiplexed     Supply    
   
5.25     0     2.7     5.25     2.7     5.25     0.2     49.6     -71.2     Catalog