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AD9251:14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter

AD9251 功能框图The AD9251 is a monolithic, dual-channel, 1.8 V supply, 14-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS analog-to-digital converter (ADC). It features a high performance sample-and-hold circuit and on-chip voltage reference.The product uses multistage differential pipeline architecture with output error correction logic to provide 14-bit accuracy at 80 MSPS data rates and to guarantee no missing codes over the full operating temperature range.The ADC contains several features designed to maximize flexibility and minimize system cost, such as programmable clock and data alignment and programmable digital test pattern generation. The available digital test patterns include built-in deterministic and pseudorandom patterns, along with custom user-defined test patterns entered via the serial port interface (SPI).A differential clock input controls all internal conversion cycles. An optional duty cycle stabilizer (DCS) compensates for wide variations in the clock duty cycle while maintaining excellent overall ADC performance.The digital output data is presented in offset binary, gray code, or twos complement format. A data output clock (DCO) is provided for each ADC channel to ensure proper latch timing with receiving logic. Both 1.8 V and 3.3 V CMOS levels are supported and output data can be multiplexed onto a single output bus.The AD9251 is available in a 64-lead RoHS Compliant LFCSP and is specified over the industrial temperature range (−40°C to +85°C).

AD9251 特点
  • 1.8 V analog supply operation
  • 1.8 V to 3.3 V output supply
  • SNR
    74.3 dBFS at 9.7 MHz input
    71.5 dBFS at 200 MHz input
  • SFDR
    93 dBc at 9.7 MHz input
    80 dBc at 200 MHz input
  • Low power
    33 mW per channel at 20 MSPS
    73 mW per channel at 80 MSPS
  • Differential input with 700 MHz bandwidth
  • On-chip voltage reference and sample-and-hold circuit
  • DNL = ±0.45 LSB
  • Please see data sheet for additional features
AD9251 亮点
  • The AD9251 operates from a single 1.8 V analog power supply and features a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families.
  • The patented sample-and-hold circuit maintains excellent performance for input frequencies up to 200 MHz and is designed for low cost, low power, and ease of use.
  • A standard serial port interface supports various product features and functions, such as data output formatting, internal clock divider, power-down, DCO/DATA timing and offset adjustments, and voltage reference modes.
  • The AD9251 is packaged in a 64-lead RoHS compliant LFCSP that is pin compatible with the AD9268 16-bit ADC, the AD9258 14-bit ADC, the AD9231 12-bit ADC, and the AD9204 10-bit ADC, enabling a simple migration path between 10-bit and 16-bit converters sampling from 20 MSPS to 125 MSPS.
AD9251 技术指标
  • Resolution (Bits): 14bit
  • # Chan: 2
  • Sample Rate: 80MSPS
  • Interface: Par
  • Analog Input Type: Diff-Uni
  • Ain Range: (2Vref) p-p,2 V p-p
  • ADC Architecture: Pipelined
  • Pkg Type: CSP
AD9251 应用领域
  • Communications
  • Diversity Radio systems
  • Multimode digital receivers :GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA
  • I/Q demodulation systems
  • Smart antenna systems
  • Battery-powered instruments
  • Hand-held scope meters
  • Portable medical imaging
  • Ultrasound
  • Radar/LIDAR
AD9251 建议配套产品
AD9251 芯片订购指南
产品型号 封装 引脚 温度范围 包装和数量 报价*(100-499) 报价*1000 pcs RoHS
AD9251-20EBZ 产品状态: 量产 评估板 - 工业 1 $ 200.00 $ 200.00 是
AD9251-40EBZ 产品状态: 量产 评估板 - 工业 1 $ 200.00 $ 200.00 是
AD9251-65EBZ 产品状态: 量产 评估板 - 工业 1 $ 200.00 $ 200.00 是
AD9251-80EBZ 产品状态: 量产 评估板 56 工业 1 $ 200.00 $ 200.00 是
AD9251BCPZ-20 产品状态: 量产 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 工业 Tray, 260 $ 21.76 $ 18.50 是
AD9251BCPZ-40 产品状态: 量产 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 工业 Tray, 260 $ 28.10 $ 23.89 是
AD9251BCPZ-65 产品状态: 量产 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 工业 Tray, 260 $ 41.18 $ 35.00 是
AD9251BCPZ-80 产品状态: 量产 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 工业 Tray, 260 $ 44.12 $ 37.50 是
AD9251BCPZRL7-20 产品状态: 量产 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 工业 Reel, 750 $ 21.76 $ 18.50 是
AD9251BCPZRL7-40 产品状态: 量产 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 工业 Reel, 750 $ 28.10 $ 23.89 是
AD9251BCPZRL7-65 产品状态: 量产 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 工业 Reel, 750 $ 41.18 $ 35.00 是
AD9251BCPZRL7-80 产品状态: 量产 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 工业 Reel, 750 $ 44.12 $ 37.50 是
AD9251 应用技术支持与电子电路设计开发资源下载
  1. AD9251 数据手册DataSheet下载 .PDF
  2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .PDF
  3. ADC模数转换器选型指南 . PDF