ADC0804LCWM complex integrated circuits Integrated Circuit Chip 8-Bit μP Compatible A/D Converters

 
ADC0801/ADC0802/ADC0803/ADC0804/ADC0805
8-Bit µP Compatible A/D Converters
 
General Description
The ADC0801, ADC0802, ADC0803, ADC0804 and ADC0805 are CMOS 8-bit successive approximation A/D converters 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 A/Ds 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 “stand alone”
Differential analog voltage inputs
 Logic inputs and outputs meet both MOS and TTL voltage level specifications
Works with 2.5V (LM336) voltage reference
On-chip clock generator
0V to 5V analog input voltage range with single 5V supply
No zero adjust required
0.3" 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
 
Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
 
Supply Voltage (V_CC) (Note 3)                                                         6.5V  
Voltage
  Logic Control Inputs                                                           −0.3V to +18V
  At Other Input and Outputs                                       −0.3V to (VCC+0.3V)
Lead Temp. (Soldering, 10 seconds)
  Dual-In-Line Package (plastic)                                                          260˚C
  Dual-In-Line Package (ceramic)                                                        300˚C
  Surface Mount Package
      Vapor Phase (60 seconds)                                                            215˚C
      Infrared (15 seconds)                                                                     220˚C
Storage Temperature Range                                                −65˚C to +150˚C
Package Dissipation at TA=25˚C                                                         875 mW
ESD Susceptibility (Note 10)                                                                     800V
 
Operating Ratings (Notes 1, 2)
Temperature Range                                                                  T_MIN≤T_A≤T_MAX
  ADC0804LCJ                                                                         −40˚C≤T_A≤+85˚C
  ADC0801/02/03/05LCN                                                          −40˚C≤T_A≤+85˚C
  ADC0804LCN                                                                             0˚C≤T_A≤+70˚C
  ADC0802/04LCWM                                                                     0˚C≤T_A≤+70˚C
Range of V_CC                                                                         4.5 V_DC to 6.3 V_DC
 
Connection Diagram
 
 
Typical Applications
 
Physical Dimensions inches (millimeters) unless otherwise noted
 
 
 
Stock Offer (Hot Sell)