AD9484 8-Bit, 500 MSPS, 1.8 V Analog-to-Digital Converter

Fabricated on an advanced BiCMOS process, the AD9484 is available in a 56-lead LFCSP, and is specified over the industrial temperature range (−40°C to +85°C). This product is protected under U.S. and international patents. APPLICATIONS Wireless and wired broadband communications Cable reverse path Communications test equipment Low cost digital oscilloscopes Satellite subsystems Power amplifier linearization PRODUCT HIGHLIGHTS High Performance. Maintains 47 dBFS SNR at 500 MSPS with a 250 MHz input. Ease of Use. LVDS output data and output clock signal allow interface to current FPGA technology. The on-chip reference and sample and hold provide flexibility in system design. Use of a single 1.8 V supply simplifies system power supply design. Serial Port Control. Standard serial port interface supports various product functions, such as data formatting, disabling the clock duty cycle stabilizer, power-down, gain adjust, and output test pattern generation. Pin compatible with AD9434, 12-bit 500Msps and AD9230, 12-bit 250Msps ADCs.

The AD9484 is an 8-bit, monolithic, sampling analog-to-digital converter (ADC) optimized for high performance, low power, and ease of use. The part operates at up to a 500 MSPS conversion rate and is optimized for outstanding dynamic performance in wideband carrier and broadband systems. All necessary functions, including a sample-and-hold and voltage reference, are included on the chip to provide a complete signal conversion solution. The VREF pin can be used to monitor the internal reference or provide an external voltage reference (external reference mode must be enabled through the SPI port).

The ADC requires a 1.8 V analog voltage supply and a differential clock for full performance operation. The digital outputs are LVDS (ANSI-644) compatible and support twos complement, offset binary format, or Gray code. A data clock output is available for proper output data timing.

Fabricated on an advanced BiCMOS process, the AD9484 is available in a 56-lead LFCSP, and is specified over the industrial temperature range (−40°C to +85°C). This product is protected under U.S. and international patents.

APPLICATIONS
  • Wireless and wired broadband communications
  • Cable reverse path
  • Communications test equipment
  • Low cost digital oscilloscopes
  • Satellite subsystems
  • Power amplifier linearization
Features and Benefits
  • SNR = 47 dBFS at fIN up to
    250 MHz at 500 MSPS
  • ENOB of 7.5 bits at fIN up to
    250 MHz at 500 MSPS
    (−1.0 dBFS)
  • SFDR = 79 dBc at fIN up to
    250 MHz at 500 MSPS
    (−1.0 dBFS)
  • Integrated input buffer
  • Excellent linearity
    -- DNL = ±0.1 LSB typical
    -- INL = ±0.1 LSB typical
  • LVDS at 500 MSPS
    (ANSI-644 levels)
  • 1 GHz full power analog bandwidth
  • Pin Compatible with AD9434 and AD9230, ADCs
  • See datasheet for additional features
Analog to Digital Converters
AD9434/AD9484 IBIS Model
Data Sheets
Documentnote
AD9484: 8-Bit, 500 MSPS, 1.8 V Analog-to-Digital Converter (Rev. A)PDF 600 kB
Application Notes
Documentnote
AN-878: High Speed ADC SPI Control Software (Rev. A)PDF 585 kB
AN-905: Visual Analog Converter Evaluation Tool Version 1.0 User Manual (Rev. 0)PDF 2124 kB
AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B)PDF 985 kB
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (Rev. 0)PDF 291.7 K
AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (Rev. 0)PDF 203 kB
AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)PDF 363 kB
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B)PDF 401 kB
AN-586: LVDS Outputs for High Speed A/D Converters (Rev. 0)PDF 207 kB
AN-1142: Techniques for High Speed ADC PCB Layout (Rev. 0)PDF 392 kB
AN-807: Multicarrier WCDMA Feasibility (Rev. 0)PDF 969 kB
AN-808: Multicarrier CDMA2000 Feasibility (Rev. 0)PDF 1535 kB
AN-877: Interfacing to High Speed ADCs via SPI (Rev. A)PDF 1594 kB
User Guides
Documentnote
UG-290: Evaluating the AD9434 and AD9484 Analog-to-Digital ConvertersPDF 1766 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD9484BCPZ-500 Production56 ld LFCSP (8x8mm, 5.1mm exposed pad)OTH 260-40 to 85C42.3536Y
AD9484BCPZRL7-500 Production56 ld LFCSP (8x8mm, 5.1mm exposed pad)REEL 750-40 to 85C42.3536Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
AD9484-500EBZEvaluation Board250Y
Reference Materials
AD9484: 8-Bit, 500 MSPS, 1.8 V Analog-to-Digital Converter (Rev. A) ad9484
AD9434BCP (valid for all speeds) ad9434
AN-878: High Speed ADC SPI Control Software (Rev. A) ad6655
AN-905: Visual Analog Converter Evaluation Tool Version 1.0 User Manual (Rev. 0) ad9220
AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B) ad9220
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (Rev. 0) ad9220
AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (Rev. 0) ad6655
AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0) ad9220
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B) ad7476
AN-586: LVDS Outputs for High Speed A/D Converters (Rev. 0) ad6642
AN-835: 高速ADC测试和评估 (Rev. 0) ad9510
AN-1142: 高速ADC PCB布局布线技巧 (Rev. 0) ad6655
AN-1142: Techniques for High Speed ADC PCB Layout (Rev. 0) ad6655
AN-878: 高速ADC SPI控制软件[中文版] (Rev. A) ad6655
AN-807: 多载波WCDMA的可行性 (Rev. 0) adf4106
AN-807: Multicarrier WCDMA Feasibility (Rev. 0) ad6655
AN-808: Multicarrier CDMA2000 Feasibility (Rev. 0) ad9863
AN-827: 放大器与开关电容ADC接口的匹配方法[中文版] (Rev. 0) ad8351
AN-877: 通过SPI与高速ADC接口[中文版] (Rev. A) ad9271
AN-877: Interfacing to High Speed ADCs via SPI (Rev. A) ad7091r
AN-905: VisualAnalog™转换器评估工具1.0版用户手册 (Rev. 0) ad6655
AN-935: ADC变压器耦合前端设计[中文版] (Rev. 0) ad6655
AN-586: 高速模数转换器的LVDS数据输出[中文版] (Rev. 0) ad6642
AN-756: 系统采样以及时钟相位噪声和抖动的影响[中文版] (Rev. 0) ad9540
UG-290: Evaluating the AD9434 and AD9484 Analog-to-Digital Converters ad9434
MS-2210：高速ADC的电源设计 ad9861
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