|Name:||dsPIC33 Sampler Board|
|Summary:||The dsPIC33 Sampler board is used to evaluate the 1MHz+ ADC and 70 MHz DSP processing power of this device. Dual channel inputs, a mic + mic-preamp, a 2Mb serial flash chip, and other peripherals are also added for flexibility.|
|Specifications||70 MHz DSP, 1MHz+ or 500kHz dual channel ADC, 2Mb storage, audio preamp, audio out amp, 5v and 3.3v I2C, 3.3v serial FTDI/USB and Bluetooth.|
|Dimensions:||3.8" x 2.5"|
|Power:||7 - 12 VDC|
|Schematics||dsPIC33 Sampler schematic pg 1
dsPIC33 Sampler schematic pg 2
The dsPIC33 Sampler board is designed to provide one channel of 12 bit data
at 1100 kHz or four simultaneous channels of 10 bit data at 250 kHz.
It includes an electret microphone preamp and two opamp buffers. Both provide signals biased at 1.615v for the 0 to 3.3v ADC giving a bipolar +/- 1.615v data product.
A 2Mb 40MHz serial flash is available to store data.
Both a 5v and a 3.3v I2C interface are provided.
A 6 pin serial port configured to support 3.3v FTDI/USB and Bluetooth modules is provided.
The board has a 0.7w @ 8ohm audio driver connected to a high speed PWM port though a 10kHz low pass RC filter and volume control pot.
As with most boards, it also includes a PIC ISP programming header, +5 and +3.3v voltage regulators, and a status LED.
There are various jumper to isolate external voltages from the on-board regulators.
The board uses a 7-12v DC (9v DC typical) external supply for power.