AD977ABRS

Analog To Digital Converters (ADC) Overview

The AD977ABRS is a high-speed, low-power 16-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It utilizes a successive approximation switched-capacitor architecture and operates from a single 5 V supply with a maximum power dissipation of 100 mW. The device features a throughput rate of 200 kSPS, an internal 2.5 V reference, and a high-speed serial interface. It supports various input ranges including unipolar (0 V to 10 V, 0 V to 5 V, 0 V to 4 V) and bipolar (±10 V, ±5 V, ±3.3 V). The component is housed in a 28-lead skinny SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Factory calibrated switched capacitor architecture minimizes linearity errors
• Single 5 V supply operation with low power consumption
• High-speed serial interface with on-chip clock generation
• Comprehensive AC and DC parameter testing including SNR and THD

Analog To Digital Converters (ADC) Applications

• Direct conversion transmit applications requiring multicarrier generation
• Wireless infrastructure systems such as W-CDMA and CDMA2000
• Precision data acquisition systems requiring 16-bit resolution

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix ABRS indicates the 200 kSPS variant and SSOP package. Confirm RoHS compliance status through official documentation. Check for obsolescence or limited availability as older ADC models may have restricted supply chains. Ensure the internal reference meets system requirements without external components.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution and 200 kSPS sampling rate are required within a single-supply design. Compare against the AD977 which offers 100 kSPS throughput if lower speed suffices. Consider the package constraints of the 28-lead skinny SSOP during PCB layout. Verify that the supported input voltage ranges align with the sensor or signal source specifications.

Analog To Digital Converters (ADC) Part Context

The AD977ABRS belongs to the AD977 family of 16-bit A/D converters. This series includes variants like the AD977 (100 kSPS) and AD977A (200 kSPS). The ABRS suffix specifically denotes the faster throughput version packaged in a skinny SSOP format. These devices share common architectural features such as the SAR structure and serial interface.

Analog To Digital Converters (ADC) Replacement Considerations

• AD977ABR: Same functional performance but potentially different packaging or revision.

Analog To Digital Converters (ADC) FAQ

What is the difference between the AD977 and AD977A?

The primary difference is the throughput rate; the AD977 operates at 100 kSPS while the AD977A operates at 200 kSPS.

Does the AD977ABRS require an external reference voltage?

No, it contains an internal 2.5 V reference, though an external reference can be used if preferred.

What is the maximum power dissipation of this device?

The maximum power dissipation is 100 mW when operating from a single 5 V supply.