Overview
The ADC0804LCWMX from Texas Instruments is a CMOS 8-bit successive approximation analog-to-digital converter (ADC). This device is part of the ADC080X family, which is designed to be compatible with various microprocessors, including the 8080A and its derivatives. The ADC0804LCWMX is notable for its ease of interface with most microprocessors and its ability to operate as a stand-alone device. It features a differential analog voltage input, which enhances common-mode rejection and allows for offsetting the analog zero input voltage. The device also includes an on-chip clock generator and works with a single 5-V supply, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 8 Bits | |
| Total Error | ±1 LSB | |
| Conversion Time | 100 µs | |
| Analog Input Voltage Range | 0 V to 5 V | |
| Supply Voltage | 4.5 V to 6.3 V | VDC |
| Operating Temperature Range | 0°C to 70°C | |
| Package Type | 20-Pin SOIC | |
| Access Time | 135 ns |
Key Features
- Easy interface to all microprocessors or operates as a stand-alone device
- Differential analog voltage inputs for improved common-mode rejection
- Logic inputs and outputs meet both MOS and TTL voltage-level specifications
- Works with 2.5-V (LM336) voltage reference and other adjustable voltage references
- On-chip clock generator
- No zero adjust required
- Operates ratiometrically or with 5 VDC, 2.5 VDC, or analog span adjusted voltage reference
Applications
- Interface to temperature sensors, voltage sources, and transducers
- Operates with any 8-bit microprocessor or as a stand-alone device
- Suitable for industrial control systems, medical devices, and automotive applications
- Used in data acquisition systems and measurement instruments
Q & A
- What is the resolution of the ADC0804LCWMX?
The resolution of the ADC0804LCWMX is 8 bits.
- What is the conversion time of the ADC0804LCWMX?
The conversion time is 100 µs.
- Does the ADC0804LCWMX require interfacing logic to connect to microprocessors?
No, it does not require interfacing logic and can directly drive the data bus of microprocessors like the 8080A.
- What is the operating temperature range of the ADC0804LCWMX?
The operating temperature range is from 0°C to 70°C.
- What type of package is the ADC0804LCWMX available in?
The ADC0804LCWMX is available in a 20-Pin SOIC package.
- Can the ADC0804LCWMX operate with different voltage references?
- Does the ADC0804LCWMX require a zero adjust?
No, it does not require a zero adjust.
- What is the access time of the ADC0804LCWMX?
The access time is 135 ns.
- What is the common-mode rejection capability of the ADC0804LCWMX?
The differential analog voltage inputs provide good common-mode rejection.
- Can the ADC0804LCWMX be used in stand-alone mode?
