GSAS Analog I/O Modules

The GSAS Analog I/O Modules are a collection of six interface modules covering the full spectrum of analog-to-digital and digital-to-analog conversion techniques used in embedded systems education. Each module connects to GSAS microprocessor trainer kits through the standard bus connector, providing students with hands-on experience in analog signal acquisition, conversion, and output, essential skills for any engineer working with real-world sensor data and control systems.

The six modules progress from basic conversion concepts to practical sensor interfacing: the 16-channel ADC module introduces multiplexed data acquisition, the 12-bit ADC module covers high-resolution conversion, the dual DAC module teaches waveform generation and analog output, the dual-slope ADC module demonstrates integration-based conversion (the technique behind digital multimeters), the temperature transducer module connects analog theory to real sensor measurement, and the DAC FOR ADC Interface module enables students to verify conversion accuracy by feeding a DAC output directly into an ADC input for loopback testing.

Together, these modules provide complete coverage of the analog interfacing experiments specified in Indian university embedded systems and instrumentation curricula. Each module includes documented pinouts, test points for oscilloscope probing, and compatibility with the GSAS structured lab manual.

Module Overview

Module	Key IC/Sensor	Function	Typical Experiments
16-Channel ADC	ADC0816 or equivalent	16 analog inputs, 8-bit conversion	Multiplexed data acquisition, channel scanning
12-Bit ADC	AD1674	High-resolution single-channel ADC	Precision measurement, resolution vs. speed tradeoffs
Dual DAC	DAC0808 x2	Two independent analog outputs	Waveform generation, sine/triangle/sawtooth output
Dual-Slope ADC	Integrator + comparator	Integration-based conversion	Noise rejection, DMM-style measurement techniques
Temperature Transducer	ADC 7109	Temperature to voltage conversion	Sensor interfacing, calibration, data logging
DAC FOR ADC Interface	DAC + ADC	DAC output fed to ADC input for conversion verification	DAC-to-ADC loopback, conversion accuracy verification, digital signal reconstruction

Specifications

Parameter	Value
ADC Resolution	8-bit (16-ch), 12-bit (precision)
DAC Resolution	8-bit dual output
Input Voltage Range	0–5V (configurable)
Bus Interface	Standard GSAS trainer bus connector
Power	Supplied from trainer kit
Test Points	Labelled for oscilloscope probing

Why GSAS

GSAS manufactures these analog interface modules in Bangalore with consistent quality across production batches, ensuring uniform lab experiences for all students. The six-module set covers the complete analog interfacing syllabus for microprocessor and instrumentation courses. Colleges can purchase individual modules or complete sets at volume pricing, and the GSAS education products team provides lab manual support and faculty guidance for curriculum integration.

Products are available for immediate purchase through the GSAS online store (“Buy on Store”) or through direct engagement for institutional and volume orders (“Request Volume Pricing”).