The ADS61B49 (ADS61B29) is a 14-bit (12-bit) A/D converter with a sampling rate up to 250 MSPS. It combines high dynamic performance and low power consumption in a compact 48-QFN package. An integrated analog buffer makes it well-suited for multi-carrier, wide bandwidth communications applications. The buffer maintains constant performance and input impedance across a wide frequency range.

The ADS61B49 (ADS61B29) has fine gain options that can be used to improve SFDR performance at lower full-scale input ranges. It includes a dc offset correction loop that can be used to cancel the ADC offset. Both Double Data Rate (DDR) LVDS and parallel CMOS digital output interfaces are available. At lower sampling rates, the ADC automatically operates at scaled down power with no loss in performance.

It includes internal references while the traditional reference pins and associated decoupling capacitors have been eliminated. The device is specified over the industrial temperature range (-40°C to 85°C).

• Integrated High Impedance Analog Input Buffer
• Maximum Sample Rate: 250 MSPS
• 14-Bit Resolution — ADS61B49
• 12-Bit Resolution — ADS61B29
• 790 mW Total Power Dissipation at 250 MSPS
• Double Data Rate (DDR) LVDS and Parallel CMOS Output Options
• Programmable Fine Gain up to 6 dB for SNR/SFDR Trade-Off and 1-Vpp Full-Scale Operation
• DC Offset Correction
• Supports Input Clock Amplitude Down to 400 mVPP Differential
• 48-QFN Package (7mm × 7mm)
• Pin Compatible with ADS6149 Family
• APPLICATIONS
  • Multicarrier, Wide Bandwidth Communications
  • Wireless Multi-Carrier Communications Infrastructure
  • Software Defined Radio
  • Power Amplifier Linearization Feedback ADC
  • 802.16d/e
  • Test and Measurement Instrumentation
  • High Definition Video
  • Medical Imaging
  • Radar Systems

• Sample rate (Max) (MSPS)
• 250
• Resolution (Bits)
• 14
• Number of input channels
• 1
• Interface type
• DDR LVDS, Parallel CMOS
• Analog input BW (MHz)
• 700
• Features
• High Performance
• Rating
• Catalog
• Input range (Vp-p)
• 2
• Power consumption (Typ) (mW)
• 790
• Architecture
• Pipeline
• SNR (dB)
• 72.3
• ENOB (Bits)
• 11.3
• SFDR (dB)
• 92
• Operating temperature range (C)
• -40 to 85
• Input buffer
• Yes

ADS61B49的完整型号有：ADS61B49IRGZR、ADS61B49IRGZT，以下是这些产品的关键参数及官网采购报价：

ADS61B49IRGZR，工作温度：-40 to 85，封装：VQFN (RGZ)-48，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAUAG，TI官网ADS61B49IRGZR的批量USD价格：127.778（1000+）

ADS61B49IRGZT，工作温度：-40 to 85，封装：VQFN (RGZ)-48，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网ADS61B49IRGZT的批量USD价格：129.778（1000+）

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