Datasheet

 2011-2013 Microchip Technology Inc. DS39995D-page 207
PIC24FV32KA304 FAMILY
22.0 12-BIT A/D CONVERTER WITH
THRESHOLD DETECT
The PIC24F 12-bit A/D Converter has the following key
features:
• Successive Approximation Register (SAR)
Conversion
• Conversion Speeds of up to 100 ksps
• Up to 32 Analog Input Channels (Internal and
External)
• Multiple Internal Reference Input Channels
• External Voltage Reference Input Pins
• Unipolar Differential Sample-and-Hold (S/H)
Amplifier
• Automated Threshold Scan and Compare
Operation to Pre-Evaluate Conversion Results
• Selectable Conversion Trigger Source
• Fixed-Length (one word per channel),
Configurable Conversion Result Buffer
• Four Options for Results Alignment
• Configurable Interrupt Generation
• Operation During CPU Sleep and Idle modes
The 12-bit A/D Converter module is an enhanced
version of the 10-bit module offered in some PIC24
devices. Both modules are Successive Approximation
Register (SAR) converters at their cores, surrounded
by a range of hardware features for flexible
configuration. This version of the module extends
functionality by providing 12-bit resolution, a wider
range of automatic sampling options and tighter
integration with other analog modules, such as the
CTMU and a configurable results buffer. This module
also includes a unique Threshold Detect feature that
allows the module itself to make simple decisions
based on the conversion results.
A simplified block diagram for the module is illustrated
in Figure 22-1.
Note: This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information on the 12-Bit
A/D Converter with Threshold Detect, refer
to the “PIC24F Family Reference Manual”,
Section 51. “12-Bit A/D Converter with
Threshold Detect” (DS39739).