Product Overview
Maxim MAX186CEPP 12-Bit 8-Channel Serial ADC DIP-20
Condition
Unused new old stock (NOS). Markings legible: MAXIM MAX186CEPP. Pins are straight and clean with no socket wear. Sold each.
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Product Overview
Complete 12-bit data-acquisition system integrating an 8-channel multiplexer, high-bandwidth track/hold, and a serial interface into a standard 20-pin plastic DIP package. Configurable via software for eight single-ended or four pseudo-differential inputs, it operates from a single +5V or dual ±5V power supply. An internal 4.096V reference and reference buffer deliver stable on-chip conversions up to 133 ksps with SPI, QSPI, and MICROWIRE compatible serial data output.
Key Features
- 12-bit successive approximation register (SAR) analog-to-digital converter architecture
- Software-configurable 8-channel single-ended or 4-channel differential analog multiplexer
- Sampling throughput rates up to 133 ksps
- Internal precision 4.096V reference with buffer amplifier
- Low-power 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE
- Single +5V supply or dual ±5V bipolar input operation
- Extended industrial temperature rating: -40°C to +85°C
- Standard 20-pin plastic dual in-line package (PDIP-20) with 0.300-inch row spacing
Applications
- Replacing failed A/D converters on legacy industrial control boards and test instrumentation during bench repair
- Building multichannel analog sensor interfaces for microcontroller projects requiring true bipolar ±5V input ranges
- Prototyping precision 12-bit data acquisition circuits on standard solderless breadboards using the through-hole DIP footprint
Frequently Asked Questions
Can the analog inputs measure negative signal voltages?
Yes. When powered with dual ±5V supplies (V+ at +5V and V- at -5V), the analog inputs accept bipolar input voltages relative to ground.
Is an external voltage reference required to run conversions?
No. An internal 4.096V reference and reference buffer provide on-chip conversion stability, though an external reference can also be connected if your circuit design requires a different conversion span.
What serial communication protocols does the interface support?
The 4-wire serial interface is compatible with standard SPI, QSPI, and MICROWIRE protocols for simple connection to microcontrollers and DSPs.
What is the package footprint and lead spacing?
It is housed in a standard 20-pin through-hole plastic DIP with 0.100-inch pin spacing and 0.300-inch row spacing.
Through-hole precision ADCs from this lineage remain the go-to fix when a legacy instrument refuses to retire and surface-mount rework is not an option. Drop it into the socket, route your serial clock, and let the conversions run.
