ChongMing Group (HK) Int'l Co., Ltd
CHONGMING GROUP (HK) INT'L CO., LTD.
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ADC0803/0804 CMOS 8-bit A/D converters
DESCRIPTION
The ADC0803 family is a series of three CMOS 8-bit successive approximation A/D converters using a resistive ladder and capacitive array together with an auto-zero comparator. These converters are designed to operate with microprocessor-controlled buses using a minimum of external circuitry. The 3-State output data lines can be connected directly to the data bus.
The differential analog voltage input allows for increased common-mode rejection and provides a means to adjust the zero-scale offset. Additionally, the voltage reference input provides a means of encoding small analog voltages to the full 8 bits of resolution.
FEATURES
• Compatible with most microprocessors
• Differential inputs
• 3-State outputs
• Logic levels TTL and MOS compatible
• Can be used with internal or external clock
• Analog input range 0 V to VCC
• Single 5 V supply
• Guaranteed specification with 1 MHz clock
APPLICATIONS
• Transducer-to-microprocessor interface
• Digital thermometer
• Digitally-controlled thermostat
• Microprocessor-based monitoring and control systems
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
| SYMBOL | PARAMETER | CONDITIONS | RATING | UNIT |
|---|---|---|---|---|
| VCC | Supply voltage | 6.5 | V | |
| Logic control input voltages | –0.3 to +16 | V | ||
| All other input voltages | –0.3 to (VCC +0.3) | V | ||
|
Tamb
|
Operating temperature range ADC0803LCD/ADC0804LCD ADC0803LCN/ADC0804LCN ADC0803CD/ADC0804CD ADC0803CN/ADC0804CN |
–40 to +85 –40 to +85 0 to +70 0 to +70 |
°C | |
| Tstg | Storage temperature | –65 to +150 | °C | |
| Tsld | Lead soldering temperature (10 seconds) | 230 | °C | |
|
PD
|
Maximum power dissipation1 N package D package |
Tamb = 25 °C (still air)
|
1690 1390 |
mW |
NOTE:
1. Derate above 25 °C, at the following rates: N package at 13.5 mW/°C; D package at 11.1 mW/°C.
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