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AD9238 Datasheet

AD9238 Datasheet

12-Bit, 20 MSPS/40 MSPS/65 MSPS, Dual A/D Converter
Part No.: AD9238
Page: 46 Pages
Size: 1137 KB
Manufacturer: Analog Devices, Inc.
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Views: 1
Update Time: 2023-09-26 14:18:39
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AD9238 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
AD9238BST-20       3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BSTZ-20 Tray 250   3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BSTZRL-20 Reel 2000   3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BST-40       3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BSTRL-40       3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BSTZ-40 Tray 250   3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BSTZRL-40 Reel 2000   3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BST-65       3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BSTRL-65       3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BSTZ-65 Tray 250   3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BSTZRL-65 Reel 2000   3 64 -40°C ~ 85°C 64-Lead Low Profile Quad Flat Package [LQFP]  
AD9238BCPZ-20 Tray 260   3 64 -40°C ~ 85°C 64-Lead Lead Frame Chip Scale Package [LFCSP]  
AD9238BCPZRL-20 Reel 2500   3 64 -40°C ~ 85°C 64-Lead Lead Frame Chip Scale Package [LFCSP]  
AD9238BCPZ-40 Tray 260   3 64 -40°C ~ 85°C 64-Lead Lead Frame Chip Scale Package [LFCSP]  
AD9238BCPZRL-40 Reel 2500   3 64 -40°C ~ 85°C 64-Lead Lead Frame Chip Scale Package [LFCSP]  
AD9238BCPZ-65 Tray 260   3 64 -40°C ~ 85°C 64-Lead Lead Frame Chip Scale Package [LFCSP]  
AD9238BCPZRL-65 Reel 2500   3 64 -40°C ~ 85°C 64-Lead Lead Frame Chip Scale Package [LFCSP]  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

AD9238 Datasheet(PDF)

AD9238 Datasheet(Picture)

AD9238 Features

  • Integrated dual 12-bit ADC
  • Single 3 V supply operation (2.7 V to 3.6 V)
  • SNR = 70 dB (to Nyquist, AD9238-65)
  • SFDR = 80.5 dBc (to Nyquist, AD9238-65)
  • Low power: 300 mW/channel at 65 MSPS
  • Differential input with 500 MHz, 3 dB bandwidth
  • Exceptional crosstalk immunity > 85 dB
  • Flexible analog input: 1 V p-p to 2 V p-p range
  • Offset binary or twos complement data format
  • Clock duty cycle stabilizer
  • Output datamux option

AD9238 Applications

  • Ultrasound equipment
  • Direct conversion or IF sampling receivers
    • WB-CDMA, CDMA2000, WiMAX
  • Battery-powered instruments
  • Hand-held scopemeters
  • Low cost, digital oscilloscopes

AD9238 Description

The AD9238 is a dual, 3 V, 12-bit, 20/40/65 MSPS analog to digital converter. It features dual high performance sample-and-hold amplifiers and an integrated voltage reference. The AD9238 uses a multistage differential pipelined architecture with output error correction logic to provide 12-bit accuracy and guarantee no missing codes over the full operating temperature range at up to 65 MSPS data rates.

The wide bandwidth, differential SHA allows for a variety of user-selectable input ranges and offsets including single-ended applications. It is suitable for various applications including multiplexed systems that switch full-scale voltage levels in successive channels and for sampling inputs at frequencies well beyond the Nyquist rate. The AD9238 is suitable for applications in communications, imaging and medical ultrasound.

Dual single-ended independent clock inputs are used to control all internal conversion cycles. A Duty Cycle Stabilizer (DCS) is available on the AD9238-65 and can compensate for wide variations in the clock duty cycle, allowing the converters to maintain excellent performance. The digital output data is presented in either straight binary or twos complement format. Out-of-range signals indicate an overflow condition, which can be used with the most significant bit to determine low or high overflow.

Fabricated on an advanced CMOS process, the AD9238 is available in either a space saving 64-pin LQFP or 64-pin LF-CSP and is specified over the industrial temperature range (-40°C to +85°C).

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