AD9258BCPZRL7-105

Analog To Digital Converters (ADC) Overview

The AD9258BCPZRL7-105 is a dual-channel, 14-bit analog-to-digital converter (ADC) from Analog Devices Inc., operating at a maximum sampling rate of 105 MSPS. It utilizes a multistage differential pipelined architecture with integrated output error correction logic. The device features a 650 MHz analog input bandwidth and supports flexible analog input ranges from 1 V p-p to 2 V p-p. Power consumption is specified at 750 mW at the maximum sample rate with a 1.8 V analog supply. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 77.6 dBFS and a Spurious-Free Dynamic Range (SFDR) of 88 dBc at 70 MHz input frequency. The component is housed in a 64-lead LFCSP package and operates within an industrial temperature range of −40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrated duty cycle stabilizer compensates for clock variations to maintain performance.
• Programmable internal voltage reference simplifies design considerations.
• Optional on-chip dither improves SFDR performance with low power analog inputs.
• Supports user-configurable data formatting including offset binary, two's complement, or gray coding.

Analog To Digital Converters (ADC) Applications

• Multimode digital receivers for GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, and TD-SCDMA
• Diversity radio systems
• I/Q demodulation systems
• Smart antenna systems
• General-purpose software radios

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm the exact sampling rate variant and packaging configuration. Ensure that the procurement source provides valid traceability documentation. Confirm that the component meets RoHS compliance requirements as specified in the official product specifications before finalizing acquisition.

Analog To Digital Converters (ADC) Selection Notes

Select this model when a dual-channel, high-resolution ADC is required for communication applications. The 105 MSPS rate suits intermediate frequency sampling up to 300 MHz. Consider the pin compatibility with the AD9268 if future migration to 16-bit resolution is anticipated. Evaluate power-down modes for energy-saving requirements in portable or battery-operated equipment designs.

Analog To Digital Converters (ADC) Part Context

The AD9258 belongs to a family of high-performance dual ADCs designed for versatile communications use. It shares pin compatibility with lower-speed variants like the AD9251 and AD9231, facilitating upgrades. The device integrates a serial port interface for control, allowing configuration of test modes and power states without additional external logic components.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9258 is pin-compatible with the AD9268 for 16-bit migration. It is also compatible with the AD9251, AD9231, and AD9204 for lower sample rate applications. Verify electrical specifications match the original design requirements when substituting these parts.

Analog To Digital Converters (ADC) FAQ

What is the maximum IF sampling frequency supported by the AD9258?

The AD9258 supports intermediate frequency (IF) sampling frequencies up to 300 MHz using its integer 1-to-8 input clock divider.

How does the AD9258 handle clock duty cycle variations?

An integrated duty cycle stabilizer is provided to compensate for variations in the ADC clock duty cycle, ensuring the converters maintain excellent performance.

Can the AD9258 operate with different digital output logic levels?

Yes, the digital outputs can be set to either 1.8 V CMOS or LVDS modes via the separate digital output driver supply (DRVDD).