ADS7805PB

Analog To Digital Converters (ADC) Overview

The ADS7805PB is a 16-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a single-ended ±10V input range and operates from a single +5V supply. The device integrates a sample-and-hold circuit, internal voltage reference, and clock logic. It supports a maximum sampling rate of 100 kSPS with a conversion time of approximately 8 µs. The ADS7805PB provides full parallel data output in binary two's complement format. It is housed in a 28-lead plastic dual-in-line package (DIP-28) and is specified for operation over an industrial temperature range of –25°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with no missing codes and a standard ±10V analog input range
• Maximum throughput rate of 100 kSPS with a typical conversion time of 8 µs
• High dynamic performance with a minimum Signal-to-(Noise+Distortion) ratio of 86 dB at a 20 kHz input frequency
• Integrated internal 2.5V reference or provision for external reference input

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high-resolution analog signal acquisition
• Data acquisition systems utilizing microprocessor interfaces
• Precision measurement instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the component status as active according to the provided documentation. Confirm that the DIP-28 packaging corresponds to the NT designator. Ensure compatibility with single +5V power supplies and check for any specific handling precautions regarding electrostatic discharge sensitivity during installation.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7805PB when a 16-bit resolution and ±10V input range are required. This model offers tighter linearity specifications compared to the ADS7805P variant. Ensure the application can accommodate the parallel interface requirements and the specific timing constraints associated with the R/C and CS control signals.

Analog To Digital Converters (ADC) Part Context

The ADS7805PB belongs to the ADS7805 family of 16-bit CMOS sampling ADCs. It is pin-compatible with the 12-bit ADS7804. The 'PB' suffix denotes the DIP-28 package variant with enhanced linearity specifications (±3 LSB max INL) compared to the standard 'P' version. It shares architectural similarities with other SAR converters but is distinguished by its integrated ±10V input scaling.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7805P is a compatible alternative within the same family, offering identical functionality but with a maximum Integral Nonlinearity Error of ±4 LSB instead of ±3 LSB. Both parts share the same pinout and electrical characteristics except for the linearity grade.

Analog To Digital Converters (ADC) FAQ

What is the maximum integral nonlinearity error for the ADS7805PB?

The ADS7805PB has a maximum integral nonlinearity error of ±3 LSB.

How is the data output formatted?

The ADS7805PB outputs data in a 16-bit binary two's complement format via a full parallel bus.

Can the ADS7805PB operate with an external reference voltage?

Yes, the device supports both an internal 2.5V reference and an external reference voltage ranging from 2.3V to 2.7V.