ADC0804LCWMX

ADC0804LCWMX is a low-cost 8‑bit analog-to-digital converter (ADC) in the ADC0804 family. It converts a single analog input to an 8‑bit digital word and is designed for simple microcontroller interfaces.
Key features
- Resolution: 8 bits (256 levels), input range typically 0–Vref (often 0–5 V).
- Architecture: external-clocked, successive-approximation ADC.
- Interface: parallel data bus D0–D7 plus control lines CS (chip select), WR (write), RD (read); an INTR/ready output signals conversion completion.
- Clock: requires an external clock on CLKIN (typical several MHz).
- Input: single-ended analog input (Vin) with respect to ground; Vin range limited by Vref.
- Packaging: commonly available in 16‑pin DIP or SOIC; suffix MX/LCWMX denotes specific packaging/lead-free/temperature options.
Usage notes
- Start a conversion by a write cycle; read the result on D0–D7 after INTR asserts.
- Simple for MCU-based data acquisition; slower compared to modern ADCs, but very cheap.
For exact pinout, voltage ranges, timing, and RoHS/packaging specifics, consult the datasheet for ADC0804LCWMX.

Direct equivalents (pin-compatible) are other vendors’ ADC0804 variants. Look for: ADC0804LCW, ADC0804CN, ADC0804N, ADC0804LCR, and other packaging variants of the ADC0804. For non–drop-in but similar-function alternatives, consider Analog Devices ADC0831/ADC0832 and Microchip MCP3001/MCP3002.

Key features of ADC0804LCWMX:
- 8-bit resolution with successive-approximation conversion
- Single-ended analog input; full-scale set by external reference (Vref)
- Microprocessor-friendly parallel interface: CS, WR, RD; 8-bit data bus D0–D7
- INTR output to indicate conversion complete/data ready
- External clock input; recommended clock 4.5–5.5 MHz
- Operates from +5V supply (typical 4.75–5.25 V)
- No external sample-and-hold needed; internal control logic manages timing
- Suitable for interfacing with common microprocessors (8080/8085/6800 families)
Note: Exact pinout and timing depend on package variant; check datasheet for your LCWMX version.

- Pin count: 18 pins (LCWMX package).
- Function: 8‑bit successive‑approximation ADC with a 4‑channel analog multiplexer; converts analog IN0–IN3 to 8-bit digital data on D0–D7; Interface via CS, WR, RD with an external clock; has an INTR (conversion complete) output; requires Vcc, GND, Vref, AGND/DGND.

Manufacturer: Texas Instruments (the ADC0804 line originated with National Semiconductor; TI now owns the product line).
What kind of company: TI is a multinational semiconductor company that designs and manufactures analog and digital integrated circuits.

ADC0804LCWMX is an 8‑bit, single‑channel ADC with a simple microcontroller interface. Common applications include:
- Microcontroller-based data acquisition and sensor interfacing (temperature, light, pressure, potentiometers)
- Educational labs and prototype development for ADC/DAC projects
- Instrumentation, data loggers, and process-control systems (low-to-mid bandwidth)
- Portable/handheld measurement devices and embedded test equipment
- Low-cost audio or signal-processing applications where 8-bit resolution suffices
- General embedded systems needing a straightforward, inexpensive ADC front end

An 18-pin Plastic DIP (DIP-18) package.