ADC32RF45中文资料德州仪器数据手册PDF规格书

1 Features

1• 14-Bit, Dual-Channel, 3.0-GSPS ADC

• Noise Floor: –155 dBFS/Hz

• RF Input Supports Up to 4.0 GHz

• Aperture Jitter: 90 fS

• Channel Isolation: 95 dB at fIN = 1.8 GHz

• Spectral Performance (fIN = 900 MHz, –2 dBFS):

– SNR: 60.9 dBFS

– SFDR: 67-dBc HD2, HD3

– SFDR: 77-dBc Worst Spur

• Spectral Performance (fIN = 1.78 GHz, –2 dBFS):

– SNR: 58.8 dBFS

– SFDR: 66-dBc HD2, HD3

– SFDR: 75-dBc Worst Spur

• On-Chip Digital Down-Converters:

– Up to 4 DDCs (Dual-Band Mode)

– Up to 3 Independent NCOs per DDC

• On-Chip Input Clamp for Overvoltage Protection

• Programmable On-Chip Power Detectors with

Alarm Pins for AGC Support

• On-Chip Dither

• On-Chip Input Termination

• Input Full-Scale: 1.35 VPP

• Support for Multi-Chip Synchronization

• JESD204B Interface:

– Subclass 1-Based Deterministic Latency

– 4 Lanes Per Channel at 12.5 Gbps

• Power Dissipation: 3.2 W/Ch at 3.0 GSPS

• 72-Pin VQFN Package (10 mm × 10 mm)

2 Applications

• Multi-Band, Multi-Mode 2G, 3G, 4G Cellular

Receivers

• Phased Array Radars

• Electronic Warfare

• Cable Infrastructure

• Broadband Wireless

• High-Speed Digitizers

• Software-Defined Radios

• Communications Test Equipment

• Microwave and Millimeter Wave Receivers

3 Description

The ADC32RF45 device is a 14-bit, 3.0-GSPS, dualchannel,

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 onchip

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 frontend

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).