AD9695BCPZ-1300: 14-Bit 1.3 GSPS High-Speed Analog-to-Digital Converter (ADC)

The AD9695BCPZ-1300 from Analog Devices Inc. is a state-of-the-art 14-bit analog-to-digital converter (ADC) delivering unmatched performance for high-speed data acquisition systems. With a blazing-fast 1.3 GSPS sampling rate, JESD204B serial interface, and advanced pipelined architecture, this ADC is engineered for mission-critical applications requiring both speed and precision.

Technical Specifications and Features

Core Performance Metrics

• Resolution: 14-bit (ENOB: 12.1 bits at 1.3 GSPS)
• Sampling Rate: 1.3 Giga Samples Per Second (GSPS)
• SFDR: 85 dBc at 170 MHz input
• SNR: 64.5 dBFS at 170 MHz
• Power Consumption: 1.9 W at 1.3 GSPS

Advanced Architecture

The AD9695BCPZ-1300 utilizes a pipelined architecture with 12 stages, optimized for high dynamic performance. Each pipeline stage contains a dedicated sample-and-hold amplifier (SHA), ensuring minimal distortion during high-frequency signal conversion. The integrated duty cycle stabilizer maintains performance across varying clock conditions.

Input Configuration

• Dual Differential Inputs: 700 MHz full-power bandwidth
• Input Voltage Range: 1.75 Vpp differential
• Impedance: 100 differential termination
• Simultaneous Sampling: <1 ps channel-to-channel skew

Digital Interface

The JESD204B Subclass 1 serial interface operates at up to 13 Gbps per lane, supporting:

• Lane rates from 1.6 Gbps to 13 Gbps
• Deterministic latency synchronization
• 4-lane configuration at 1.3 GSPS
• Embedded harmonic clocking

Applications and Use Cases

Radar and Defense Systems

The AD9695BCPZ-1300's combination of high sampling rate and dynamic range makes it ideal for:

• Phased array radar receivers
• Electronic warfare systems
• Signal intelligence (SIGINT) platforms
• Multichannel beamforming systems

Medical Imaging

In medical applications, the ADC enables:

• Digital X-ray detectors with 16-bit effective resolution
• Ultrasound systems with >60 dB dynamic range
• PET/CT scanner data acquisition

Communications Infrastructure

The device supports:

• 5G massive MIMO radio units
• Microwave backhaul receivers
• Satellite communication systems
• Software-defined radios (SDR)

Design Considerations

Clock Requirements

For optimal performance:

• Use ultra-low jitter (<100 fs RMS) clock sources
• Implement clock tree with <0.5 dB insertion loss
• Consider ADCLK914/ADCLK925 clock buffers

Power Management

The multi-rail power system requires:

• 1.0V analog supply (AVDD) with <10 m impedance
• 1.8V digital supply (DRVDD) with 100 MHz bandwidth
• Low-noise LDO regulators recommended

Thermal Management

The 64-LFCSP package features:

• 9mm x 9mm body size with exposed thermal pad
• JA of 28 C/W with proper PCB heatsinking
• Maximum junction temperature of 125 C

Comparison with Competing ADCs

Parameter	AD9695BCPZ-1300	Competitor A	Competitor B
Resolution	14-bit	12-bit	14-bit
Sample Rate	1.3 GSPS	1.0 GSPS	1.5 GSPS
Power (1.3 GSPS)	1.9 W	2.4 W	2.1 W
JESD204B Lanes	4	8	4

Conclusion

The AD9695BCPZ-1300 represents the cutting edge of high-speed ADC technology, combining industry-leading sampling rates with exceptional dynamic performance. Its JESD204B interface simplifies system integration while reducing board space requirements. For engineers developing next-generation radar, communications, or medical imaging systems, this ADC delivers the perfect balance of speed, precision, and power efficiency.

Design Resources:

• Evaluation Board: EVAL-AD9695-1300EBZ
• Reference Designs: CN-0538, CN-0551
• Simulation Models: IBIS-AMI, HSPICE