ADC32RF45

ADC32RF4x 双通道 14 位 1.0–3.0GSPS 模数转换器

The device is a 14-bit, 3.0-GSPS, dual-channel, analog-to-digital converter ADC that supports RF sampling with input frequencies up to 4 GHz and beyond. Designed for high signal-to-noise ratio SNR, the ADC32RF45 delivers a noise spectral density of –155 dBFS/Hz as well as dynamic range and channel isolation over a large input frequency range. The buffered analog input with on-chip termination provides uniform input impedance across a wide frequency range and minimizes sample-and-hold glitch energy.

Each ADC channel can be connected to a dual-band, digital down-converter DDC with up to three independent, 16-bit numerically-controlled oscillators NCOs per DDC for phase-coherent frequency hopping. Additionally, the ADC is equipped with front-end peak and RMS power detectors and alarm functions to support external automatic gain control AGC algorithms.

The ADC32RF45 supports the JESD204B serial interface with subclass 1-based deterministic latency using data rates up to 12.5 Gbps with up to four lanes per ADC. The device is offered in a 72-pin VQFN package 10 mm × 10 mm and supports the industrial temperature range –40°C to +85°C.

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14-Bit, Dual-Channel, 3.0-GSPS ADC

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Noise Floor: –155 dBFS/Hz

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RF Input Supports Up to 4.0 GHz

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Aperture Jitter: 90 fS

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Channel Isolation: 95 dB at fIN = 1.8 GHz

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Spectral Performance fIN = 900 MHz, –2 dBFS:

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SNR: 60.9 dBFS

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SFDR: 67-dBc HD2, HD3

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SFDR: 77-dBc Worst Spur

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Spectral Performance fIN = 1.78 GHz, –2 dBFS:

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SNR: 58.8 dBFS

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SFDR: 66-dBc HD2, HD3

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SFDR: 75-dBc Worst Spur

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On-Chip Digital Down-Converters:

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Up to 4 DDCs Dual-Band Mode

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Up to 3 Independent NCOs per DDC

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On-Chip Input Clamp for Overvoltage Protection

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Programmable On-Chip Power Detectors with Alarm Pins for AGC Support

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On-Chip Dither

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On-Chip Input Termination

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Input Full-Scale: 1.35 VPP

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Support for Multi-Chip Synchronization

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JESD204B Interface:

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Subclass 1-Based Deterministic Latency

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4 Lanes Per Channel at 12.5 Gbps

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Power Dissipation: 3.2 W/Ch at 3.0 GSPS

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72-Pin VQFN Package 10 mm × 10 mm