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Tuesday, November 14, 2006

12-Bit A/D Converter

12-Bit A/D Converter with SPI® Serial Interface
The Microchip Technology Inc. MCP3202 is a successive
approximation 12-bit Analog-to-Digital (A/D) Converter
with on-board sample and hold circuitry. The
MCP3202 is programmable to provide a single
pseudo-differential input pair or dual single-ended

• 12-bit resolution
• ±1 LSB max DNL
• ±1 LSB max INL (MCP3202-B)
• ±2 LSB max INL (MCP3202-C)
• Analog inputs programmable as single-ended or
pseudo-differential pairs
• On-chip sample and hold
• SPI® serial interface (modes 0,0 and 1,1)
• Single supply operation: 2.7V - 5.5V
• 100ksps max. sampling rate at VDD = 5V
• 50ksps max. sampling rate at VDD = 2.7V
• Low power CMOS technology
- 500nA typical standby current, 5μA max.
- 550μA max. active current at 5V
• Industrial temp range: -40°C to +85°C
• 8-pin PDIP SOIC and TSSOP packages

MCP3202 Datasheet pdf

SPI - Serial Peripheral Interface
The Serial Peripheral Interface (SPI) is used primarily for a
synchronous serial communication of host processor and
peripherals. However, a connection of two processors via SPI
is just as well possible and is described at the end of the chapter.

C Compiler Reference Manual
Example C program interface MCP3202 to microcontroller
MCP3208.C A/D converter functions