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dsPIC30F
9.0
dsPIC30F PERIPHERALS
9.1.1
10-BIT HIGH-SPEED A/D MODULE
The Digital Signal Controller (DSC) family of 16-bit
MCU devices provides the integrated functionality of
many peripherals. Specific peripheral functions
include:
? Analog-to-Digital Converters:
- 10-bit high-speed A/D Converter
- 12-bit high-resolution A/D Converter
? General Purpose 16-bit timers
? Motor Control PWM module
? Quadrature Encoder module
? Input Capture module
? Output Compare/PWM module
? Data Converter Interface
? Serial Peripheral Interface (SPI TM ) module
? UART module
? I 2 C TM module
? Controller Area Network (CAN) module
? I/O pins
?
?
?
?
?
?
?
?
?
?
?
?
10-bit resolution
Unipolar differential sample/hold amplifiers
Up to 16 input channels
Selectable reference inputs:
- External V REF + and V REF - pins available
±1 LSB max. Differential Non-Linearity (DNL)
(5V ±10%)
±1 LSB max. Integral Non-Linearity (INL)
(5V ±10%)
Four on-chip sample and hold amplifiers:
- Enables simultaneous sampling of 2 or 4
analog inputs
Automated channel scanning
Single supply operation: 2.7-5.5V
1 Msps sampling rate at 5V
Ability to convert during CPU Sleep and Idle
modes
Conversion start can be manual or synchronized
with 1 of 4 trigger sources (Automatic, Timer3,
External Interrupt, PWM period match)
9.1
Analog-to-Digital Converters
?
16-word deep memory-mapped result buffer:
The Analog-to-Digital (A/D) Converters provide up to
16 analog inputs with both single-ended and differential
- Lower and upper half of buffer can be filled
on alternate conversions
inputs. These modules offer on-board sample and hold
circuitry.
To minimize control loop errors due to finite update
9.1.2
12-BIT HIGH RESOLUTION A/D
MODULE
times (conversion plus computations), a high-speed
low-latency ADC is required.
In addition, several hardware features have been
included in the peripheral interface to improve real-time
performance in a typical DSP-based application.
? 12-bit resolution
? Unipolar differential sample/hold amplifiers
? Up to 16 input channels:
- External V REF + and V REF - pins available
? Selectable reference inputs
?
?
?
?
?
Result alignment options
Automated sampling
Automated channel scanning
Dual Port data buffer
External conversion start control
? ±1 LSB max. DNL (5V ±10%)
? ±1 LSB max. INL (5V ±10%)
? One on-chip sample and hold amplifier
? Automated channel scanning
? Single supply operation: 2.7-5.5V
There are two versions of A/D converters available for
the dsPIC30F family of devices:
? 10-bit high-speed A/D module
? 12-bit high-resolution A/D module
DS70043F-page 24
? 200 ksps sampling rate at 5V
? Ability to convert during CPU Sleep and Idle
modes
? Conversion start can be manual or synchronized
with 1 of 3 trigger sources (Automatic, Timer3,
External Interrupt)
? 16-word deep memory-mapped result buffer:
- Lower and upper half of buffer can be filled
on alternate conversions
? 2005 Microchip Technology Inc.
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