AD9445BSVZ-105

Analog To Digital Converters (ADC) Overview

The AD9445BSVZ-105 is a 14-bit, monolithic sampling analog-to-digital converter (ADC) with an on-chip IF sampling track-and-hold circuit. It operates at a guaranteed maximum sampling rate of 105 MSPS and requires 3.3 V and 5.0 V power supplies. The device features buffered analog inputs supporting differential full-scale input spans from 2.0 V p-p to 4.0 V p-p. Digital outputs are available in CMOS or LVDS formats compatible with ANSI-644 standards. It includes an internal reference, clock duty cycle stabilizer, and out-of-range detection.

Analog To Digital Converters (ADC) Feature Summary

• Integrated clock duty cycle stabilizer maintains performance across varying clock pulse widths.
• On-chip reference and high input impedance track-and-hold simplify data capture.
• Configurable output format selection between offset binary and two's complement.
• RF enable pin optimizes spurious-free dynamic range for high-frequency sampling.

Analog To Digital Converters (ADC) Applications

• Multicarrier, multimode cellular receivers
• Radar systems
• Medical imaging equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific speed grade suffix matches the required sampling rate. Confirm package type and temperature range alignment with system requirements. Ensure supply voltages match the specified 3.3 V and 5.0 V rails. Check for lead-free compliance if required by assembly standards.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high linearity and low jitter at intermediate frequencies. Consider the 105 MSPS limit when designing clock circuits. Evaluate power consumption differences between CMOS and LVDS output modes. Verify thermal management capabilities for the 100-lead TQFP/EP package.

Analog To Digital Converters (ADC) Part Context

This part belongs to the AD9445 family of high-speed ADCs from Analog Devices. It shares architectural similarities with other members but is distinguished by its 105 MSPS maximum conversion rate specification. The device is designed for base station receivers and instrumentation applications.

Analog To Digital Converters (ADC) Replacement Considerations

AD9445BSVZ-125 offers a higher 125 MSPS sampling rate with similar pinout and functionality.

Analog To Digital Converters (ADC) FAQ

What is the purpose of the RF ENABLE pin?

The RF ENABLE pin configures the analog front end to optimize SFDR performance. For the AD9445-105, connecting it to AVDD1 is recommended for analog input frequencies above 230 MHz.

How is the data format selected?

The Data Format Select (DFS) pin determines the output data format. Connecting DFS to AVDD1 selects two's complement, while connecting it to ground selects offset binary.

What is the typical aperture uncertainty?

The AD9445BSVZ-105 has a typical aperture uncertainty (jitter) of 60 fsec rms.