8-bit Microprocessor Compatible A/D Converters With 8-Channel Multiplexer  - ADC0808-N

ADC0808-N (ACTIVE)

8-bit Microprocessor Compatible A/D Converters With 8-Channel Multiplexer

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Description

The ADC0808, ADC0809 data acquisition component is a monolithic CMOS device with an 8-bit analog-to-digital converter, 8-channel multiplexer and microprocessor compatible control logic. The 8-bit A/D converter uses successive approximation as the conversion technique. The converter features a high impedance chopper stabilized comparator, a 256R voltage divider with analog switch tree and a successive approximation register. The 8-channel multiplexer can directly access any of 8-single-ended analog signals.

The device eliminates the need for external zero and full-scale adjustments. Easy interfacing to microprocessors is provided by the latched and decoded multiplexer address inputs and latched TTL TRI-STATE outputs.

The design of the ADC0808, ADC0809 has been optimized by incorporating the most desirable aspects of several A/D conversion techniques. The ADC0808, ADC0809 offers high speed, high accuracy, minimal temperature dependence, excellent long-term accuracy and repeatability, and consumes minimal power. These features make this device ideally suited to applications from process and machine control to consumer and automotive applications. For 16-channel multiplexer with common output (sample/hold port) see ADC0816 data sheet. (See AN-247 (Literature Number SNOA595) for more information.)

Features

  • Easy Interface to All Microprocessors
  • Operates Ratiometrically or with 5 VDC or Analog Span Adjusted Voltage Reference
  • No Zero or Full-Scale Adjust Required
  • 8-Channel Multiplexer with Address Logic
  • 0V to VCC Input Range
  • Outputs meet TTL Voltage Level Specifications
  • ADC0808 Equivalent to MM74C949
  • ADC0809 Equivalent to MM74C949-1

Key Specifications

  • Resolution: 8 Bits
  • Total Unadjusted Error: ±½ LSB and ±1 LSB
  • Single Supply: 5 VDC
  • Low Power: 15 mW
  • Conversion Time: 100 μs

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Parametrics Compare all products in Precision ADC (<=10MSPS)

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
Interface
SNR (dB)
SINAD (dB)
Reference Mode
Architecture
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
ADC0808-N ADC088S102
8     8    
10kSPS     1MSPS    
8     8    
Parallel     Serial SPI
QSPI
Microwire (Serial I/O)    
  49.6    
  49.6    
Ext     Supply    
SAR     SAR    
Catalog     Catalog    
-40 to 85     -40 to 105    
28PDIP
28PLCC    
16TSSOP    
2.50 | 1ku     1.50 | 1ku    
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