TC500CPE

TC500CPE is a 16bit precision analogue processor front ends with dual slope ADC that implements dual slope A/D converters having a maximum resolution of 17 bits plus sign. As a minimum, each device contains the integrator, zero crossing comparator, and processor interface logic. It is the base (16-bit max) device and requires both positive and negative power supplies. Each device has the same processor control interface consisting of 3 wires: control inputs (A and B) and zero crossing comparator output (CMPTR). The processor manipulates A, B to sequence the TC5XX through four phases of conversion: auto-zero, integrate, deintegrate, and integrator zero. The application includes a precision analogue signal processor, precision sensor interface, and high-accuracy DC measurements.

• Precision (up to 17bits) A/D Converter “Front End”
• 3-pin control interface to microprocessor
• Flexible user can trade-off conversion speed for resolution
• Automatic input voltage polarity detection
• Directly accepts bipolar and differential input signals
• Resolution is 60μV min (TA = +25°C, VSS = ±5V, CAZ = CREF = 0.47μF)
• Oscillator frequency is 100KHz typ (TA = +25°C, VSS = ±5V, CAZ = CREF = 0.47μF)
• Supply current is 1mA typ (VS = ±5V, A = B = 1, TA = +25°C)
• Power dissipation is 10mW typ (VDD = 5V, VSS = -5V, TA = +25°C)
• 16 pin DIP package, commercial operating temperature range from 0°C to +70°C