HI7190IP 24-Bit High Precision Sigma-Delta A/D Converter IC DIP-20 Package

The HI7190IP is a monolithic instrumentation, sigma delta A/D converter which operates from ±5V supplies. Both the signal and reference inputs are fully differential for maximum flexibility and performance. An internal Programmable Gain Instrumentation Amplifier (PGIA) provides input gains from 1 to 128 eliminating the need for external pre-amplifiers. The on-demand converter auto calibrate function is capable of removing offset and gain errors existing in external and internal circuitry. The onboard user programmable digital filter provides over 120dB of 60/50Hz noise rejection and allows fine tuning of resolution and conversion speed over a wide dynamic range. The HI7190 and HI7191 are functionally the same device, but the HI7190 has tighter linearity specifications. The HI7190 contains a serial I/O port and is compatible with most synchronous transfer formats including both the Motorola 6805/11 series SPI and Intel 8051 series SSR protocols. A sophisticated set of commands gives the user control over calibration, PGIA gain, device selection, standby mode, and several other features. The On-chip Calibration Registers allow the user to read and write calibration data. Features:- • 22-Bit Resolution with No Missing Code • 0.0007% Integral Non-Linearity (Typ) • 20mV to ±2.5V Full Scale Input Ranges • Internal PGIA with Gains of 1 to 128 • Serial Data I/O Interface, SPI Compatible • Differential Analog and Reference Inputs • Internal or System Calibration • 120dB Rejection of 60/50Hz Line Noise • Settling Time of 4 Conversions (Max) for a Step Input Specifications:- Parameters Specification Supply Voltage AVDD to AGND +5.5V AVSS to AGND -5.5V DVDD to DGND +5.5V DGND to AGND ±0.3V Analog Input Pins AVSS to AVDD Digital Input, Output and I/O Pins DGND to DVDD ESD Tolerance Human Body Model 500 V Machine Model 100 V Charged Device Model 1000 V Temperature Range -40°C to 85°C Related Document:- HI7190IP IC Datasheet