AD9653BCPZ-125

Analog To Digital Converters (ADC) Overview

The AD9653BCPZ-125 is a quad, 16-bit, 125 MSPS analog-to-digital converter (ADC) with an on-chip sample-and-hold circuit. It operates from a single 1.8 V supply and features serial LVDS outputs compliant with ANSI-644 or low-power reduced range options. The device provides a 650 MHz full power analog bandwidth and supports differential input voltage ranges of 2.0 V p-p to 2.6 V p-p. Key performance metrics include an SNR of 76.5 dBFS at 70 MHz with a 2.0 V p-p span and 77.5 dBFS with a 2.6 V p-p span. It achieves an SFDR of 90 dBc and DNL/INL of ±0.7 LSB/±3.5 LSB. The component is housed in a 48-lead LFCSP package and functions within an industrial temperature range of −40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Quad-channel architecture integrating four independent ADCs into a compact footprint for space-constrained designs.
• Low power consumption of 164 mW per channel at maximum sampling rate with scalable power-down modes.
• Flexible bit orientation and programmable output clock/data alignment via SPI control interface.
• Built-in digital test pattern generation supporting deterministic, pseudorandom, and custom user-defined codes.

Analog To Digital Converters (ADC) Applications

• Medical ultrasound and MRI systems
• High speed imaging applications
• Quadrature radio receivers
• Diversity radio receivers
• Test equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'BCPZ' against the manufacturer's current ordering guide to confirm package type and RoHS compliance status. Ensure the operating environment remains within the specified -40°C to +85°C range. Confirm that the system design accommodates the required 1.8 V supply rails for both analog and digital domains. Validate that the PCB layout supports the exposed thermal pad connection for proper heat dissipation and ground reference.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a small physical size and low power consumption are critical alongside high dynamic performance. It serves as a pin-compatible alternative to the AD9253 and AD9633 families, allowing for potential upgrades in resolution without redesigning the board. Consider the serial LVDS interface requirements for the host system, ensuring compatibility with the supported data rates and coding schemes.

Analog To Digital Converters (ADC) Part Context

The AD9653 belongs to Analog Devices' family of high-speed, low-power serial LVDS ADCs. It is designed to replace parallel interface converters by reducing pin count and board complexity while maintaining high throughput. The device integrates internal references and drivers, simplifying the external component count compared to earlier generation parallel ADCs.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9253 and AD9633 are pin-compatible alternatives within the same package. Verify if the lower resolution of these parts meets the system requirements before substitution. No other direct functional substitutes are documented in the provided datasheet.

Analog To Digital Converters (ADC) FAQ

Does the AD9653 require external reference or driver components?

No external reference or driver components are required for many applications, as the device includes internal voltage references and drivers.

What is the maximum conversion rate of the AD9653?

The maximum conversion rate is 125 MSPS, based on the two-lane output mode specifications.

How does the device handle individual channel power management?

The ADC supports individual channel power-down modes, which typically consume less than 2 mW when all channels are disabled.