Overview

Features and Benefits

  • JESD204B (Subclass 1) coded serial digital outputs
  • 1.5 W total power per channel at 1 GSPS (default settings)
  • SFDR
    • 79 dBFS at 340 MHz (1 GSPS)
    • 85 dBFS at 340 MHz (500 MSPS)
  • SNR
    • 63.4 dBFS at 340 MHz (AIN = −1.0 dBFS, 1 GSPS)
    • 65.6 dBFS at 340 MHz (AIN = −1.0 dBFS, 500 MSPS)
  • ENOB = 10.4 bits at 10 MHz (1 GSPS)
  • DNL = ±0.16 LSB; INL = ±0.35 LSB (1 GSPS)
  • Noise density
    • −151 dBFS/Hz (1 GSPS)
    • −150 dBFS/Hz (500 MSPS)
  • 1.25 V, 2.5 V, and 3.3 V dc supply operation
  • Low swing full-scale input
    • 1.34 V p-p typical (1 GSPS)
    • 1.63 V p-p typical (500 MSPS)
  • No missing codes
  • Internal ADC voltage reference
  • Flexible termination impedance
    • 400 Ω, 200 Ω, 100 Ω, and 50 Ω differential
  • 2 GHz usable analog input full power bandwidth
  • 95 dB channel isolation/crosstalk
  • Amplitude detect bits for efficient AGC implementation
  • Differential clock input
  • Optional decimate by 2 DDC per channel
  • Differential clock input
  • Integer clock divide by 1, 2, 4, or 8
  • Flexible JESD204B lane configurations
  • Small signal dither

Product Details

The AD9234 is a dual, 12-bit, 1 GSPS/500 MSPS ADC. The device has an on-chip buffer and sample-and-hold circuit designed for low power, small size, and ease of use. This product is designed for sampling wide bandwidth analog signals. The AD9234 is optimized for wide input bandwidth, high sampling rate, excellent linearity, and low power in a small package.

The dual ADC cores feature a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth buffered inputs supporting a variety of user-selectable input ranges. An integrated voltage reference eases design considerations. Each ADC data output is internally connected to an optional decimate-by-2 block. The AD9234 has several functions that simplify the automatic gain control (AGC) function in a communications receiver. 

The programmable threshold detector allows monitoring of the incoming signal power using the fast detect output bits of the ADC. If the input signal level exceeds the programmable threshold, the fast detect indicator goes high. Because this threshold indicator has low latency, the user can quickly turn down the system gain to avoid an overrange condition at the ADC input. In addition to the fast detect outputs, the AD9234 also offers signal monitoring capability. The signal monitoring block provides additional information about the signal being digitized by the ADC.

Users can configure the Subclass 1 JESD204B-based high speed serialized output in a variety of one-, two-, or four-lane configurations, depending on the acceptable lane rate of the receiving logic device and the sampling rate of the ADC. Multiple device synchronization is supported through the SYSREF± and SYNCINB± input pins.

The AD9234 has flexible power-down options that allow significant power savings when desired. All of these features can be programmed using a 1.8 V to 3.3 V capable 3-wire SPI.

The AD9234 is available in a Pb-free, 64-lead LFCSP and is specified over the −40°C to +85°C industrial temperature range. This product is protected by a U.S. patent.

Product Highlights

  1. Low power consumption analog core, 12-bit, 1.0 GSPS dual analog-to-digital converter (ADC) with 1.5 W per channel.
  2. Wide full power bandwidth supports IF sampling of signals up to 2 GHz.
  3. Buffered inputs with programmable input termination eases filter design and implementation.
  4. Flexible serial port interface (SPI) controls various product features and functions to meet specific system requirements.
  5. Programmable fast overrange detection.
  6. 9 mm × 9 mm 64-lead LFCSP.
  7. Pin compatible with the AD9680 14-bit, 1 GSPS dual ADC.

Applications

  • Communications
  • Diversity multiband, multimode digital receivers
  • 3G/4G, TD-SCDMA, W-CDMA, GSM, LTE
  • Point-to-point radio systems
  • Digital predistortion observation path
  • General-purpose software radios
  • Ultrawideband satellite receiver
  • Instrumentation (spectrum analyzers, network analyzers, integrated RF test solutions)
  • Digital oscilloscopes
  • High speed data acquisition systems
  • DOCSIS 3.0 CMTS upstream receive paths
  • HFC digital reverse path receivers

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Software & Systems Requirements

Evaluation Software

JESD204 Interface Framework

Integrated JESD204 software framework for rapid system-level development and optimization

Tools & Simulations

Virtual Eval - BETA

Virtual Eval is a web application to assist designers in product evaluation of ADCs, DACs, and other ADI products. Using detailed models on Analog’s servers, Virtual Eval simulates crucial part performance characteristics within seconds. Configure operating conditions such as input tones and external jitter, as well as device features like gain or digital down-conversion. Performance characteristics include noise, distortion, and resolution, FFTs, timing diagrams, response plots, and more.

VirtualEval

IBIS Models

Product Recommendations

AD9234 Companion Parts

Recommended Differential Driver Amplifiers

  • For a low output noise, RF differential amplifier for driving heavy loads: ADA4961.
  • For ultrahigh dynamic range, low distortion and low noise: ADL5565.

Recommended Power Products

  • For high performance, step-down switching regulators requiring high efficiency and design flexibility: ADP2164, ADP2384.
  • For a low dropout linear regulator,with adjustable output voltage settings: ADP1741.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Discussions

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.