2. Pmod Information¶
Details of currently supported Pmods can be found below.
2.1. AD1¶
The Digilent Pmod AD1 (Revision G) is a two channel 12-bit analog-to-digital converter that features Analog Devices’ AD7476A. With a sampling rate of up to 1 million samples per second, this Pmod™ is capable of excelling in even the most demanding audio applications.
Features:
- Two channel 12-bit analog-to-digital converter
- Simultaneous A/D conversion at up to one MSa per channel
- Two 2-pole Sallen-Key anti-alias filters
- Small PCB size for flexible designs 0.95 in × 0.8 in (2.4 cm × 2.0 cm)
- 6-pin Pmod port with GPIO interface
Note
Only a single channel (A1) is supported at present due to the way that SPI is configured.
2.2. HB3¶
The Pmod HB3 utilizes a full H-Bridge circuit to allow users to drive DC motors from the system board. Two external pins are provided on the Pmod for sensor feedback on the DC motor, if desired.
Features:
- 2A H-bridge circuit
- Drive a DC motor with operation voltage up to 12V
- Screw terminal blocks for connection to the motor
- Separate header for external motor feedback
- 6-pin Pmod port with GPIO interface
2.3. ISNS20¶
The Digilent Pmod ISNS20 (Revision A) is a small current sense module with a digital SPI interface. The board combines an Allegro ACS722 Hall Effect current sensor with a 12-bit analog-to-digital converter from Texas Instruments. The Pmod ISNS20 is quick, accurate, and easy to use for a variety of applications.
Features:
- High accuracy current sensor
- Measure current with 120Hz/20kHz/80kHz jumper selections
- ±20A DC or AC input
- Accurate to within ±2%
- 12-bit ADC
- 6-pin Pmod port with SPI interface
- Follows Digilent Pmod Interface Specification Type 2
2.4. MIC3¶
The Digilent Pmod MIC3 (Revision A) is small microphone module with a digital interface. With a Knowles Acoustics SPA2410LR5H-B MEMs microphone and Texas Instrument’s ADCS7476 12-bit Analog-to-Digital Converter, you can capture your audio inputs with ease.
Features:
- MEMS Microphone module with digital interface
- Transform audio inputs with 12-bit A/D converter
- Adjust incoming volume with on-board potentiometer
- Up to 1 MSPS of data
- 6-pin Pmod port with SPI interface
- Follows Digilent Pmod Interface Specification Type 2
2.5. OLEDrgb¶
The Digilent Pmod OLEDrgb (Revision B) is an organic RGB LED module with a 96×64 pixel display capable of 16-bit color resolution.
Features:
- 96×64 pixel RGB OLED screen
- 0.8“ x 0.5” graphical display
- 16-bit color resolution
- Two low-power display shutdown modes
- 12-pin Pmod connector with SPI interface
2.6. TC1¶
The Digilent Pmod TC1 (Revision A) is a cold-junction thermocouple-to-digital converter module designed for a classic K-Type thermocouple wire. With Maxim Integrated’s MAX31855, this module reports the measured temperature in 14-bits with 0.25°C resolution.
Features:
- K-type thermocouple-to-digital converter
- Wide temperature range of -73°C to 482°C with provided wire
- ±2°C accuracy from -200°C to 700°C
- 14-bit with 0.25°C resolution
- Cold-junction temperature compensation
- 6-pin Pmod port with SPI interface
- Follows Digilent Pmod Interface Specification Type 2