AD9238
PRODUCTION12-Bit, 20 MSPS/40 MSPS/65 MSPS, Dual A/D Converter
- Part Models
- 11
- 1ku List Price
- Starting From $16.18
Part Details
- 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
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).
PRODUCT HIGHLIGHTS
- Pin-compatible with the AD9248, 14-bit 20MSPS/ 40 MSPS/65 MSPS ADC.
- Speed grade options of 20 MSPS, 40 MSPS, and 65 MSPS allow flexibility between power, cost, and performance to suit an application.
- Low power consumption: AD9238-65: 65 MSPS = 600 mW, AD9238-40: 40 MSPS = 330 mW, and AD9238-20: 20 MSPS = 180 mW.
- Typical channel isolation of 85 dB at fIN = 10 MHz.
- The clock duty cycle stabilizer (AD9238-20/AD9238-40/ AD9238-65) maintains performance over a wide range of clock duty cycles.
- Multiplexed data output option enables single-port operation from either Data Port A or Data Port B.
APPLICATIONS
- Ultrasound equipment
- Direct conversion or IF sampling receivers
- WB-CDMA, CDMA2000, WiMAX
- Battery-powered instruments
- Hand-held scopemeters
- Low cost, digital oscilloscopes
Documentation
Data Sheet 1
Application Note 16
Technical Articles 4
Evaluation Design File 3
Analog Dialogue 1
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD9238BCPZ-20 | 64 ld LFCSP (9x9mm, 4.70mm exposed pad) | ||
| AD9238BCPZ-40 | 64 ld LFCSP (9x9mm, 4.70mm exposed pad) | ||
| AD9238BCPZ-65 | 64 ld LFCSP (9x9mm, 4.70mm exposed pad) | ||
| AD9238BCPZRL-40 | 64 ld LFCSP (9x9mm, 4.70mm exposed pad) | ||
| AD9238BCPZRL-65 | 64 ld LFCSP (9x9mm, 4.70mm exposed pad) | ||
| AD9238BSTZ-20 | 64-Lead LQFP (7mm x 7mm) | ||
| AD9238BSTZ-40 | 64-Lead LQFP (7mm x 7mm) | ||
| AD9238BSTZ-65 | 64-Lead LQFP (7mm x 7mm) | ||
| AD9238BSTZRL-20 | 64-Lead LQFP (7mm x 7mm) | ||
| AD9238BSTZRL-40 | 64-Lead LQFP (7mm x 7mm) | ||
| AD9238BSTZRL-65 | 64-Lead LQFP (7mm x 7mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 9, 2021 - 20_0126 Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea |
||
| AD9238BCPZ-20 | PRODUCTION | |
| AD9238BCPZ-40 | PRODUCTION | |
| AD9238BCPZ-65 | PRODUCTION | |
| AD9238BCPZRL-40 | PRODUCTION | |
| AD9238BCPZRL-65 | PRODUCTION | |
|
Aug 4, 2009 - 09_0098 Assembly Site Transfer of 64L 7x7 LQFP Package from Carsem, Malaysia to Amkor Technology Korea. |
||
| AD9238BSTZ-20 | PRODUCTION | |
| AD9238BSTZ-40 | PRODUCTION | |
| AD9238BSTZ-65 | PRODUCTION | |
| AD9238BSTZRL-20 | PRODUCTION | |
| AD9238BSTZRL-40 | PRODUCTION | |
| AD9238BSTZRL-65 | PRODUCTION | |
|
Jun 16, 2009 - 09_0027 Conversion to Laser Mark for the LQFP Packages (Single Grades) |
||
| AD9238BSTZ-20 | PRODUCTION | |
| AD9238BSTZ-40 | PRODUCTION | |
| AD9238BSTZ-65 | PRODUCTION | |
| AD9238BSTZRL-20 | PRODUCTION | |
| AD9238BSTZRL-40 | PRODUCTION | |
| AD9238BSTZRL-65 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Clock Distribution Devices 3 | ||
| AD9513 | RECOMMENDED FOR NEW DESIGNS | 800 MHz Clock Distribution IC, Dividers, Delay Adjust, Three Outputs |
| AD9514 | RECOMMENDED FOR NEW DESIGNS | 1.6 GHz Clock Distribution IC, Dividers, Delay Adjust, Three Outputs |
| AD9515 | RECOMMENDED FOR NEW DESIGNS | 1.6 GHz Clock Distribution IC, Dividers, Delay Adjust, Two Outputs |
| Clock Generation Devices 3 | ||
| AD9510 | RECOMMENDED FOR NEW DESIGNS | 1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Eight Outputs |
| AD9511 | RECOMMENDED FOR NEW DESIGNS | 1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Five Outputs |
| AD9512 | RECOMMENDED FOR NEW DESIGNS | 1.2 GHz Clock Distribution IC, Two 1.6 GHz Inputs, Dividers, Delay Adjust, Five Outputs |
| Fully Differential Amplifiers 1 | ||
| AD8352 | RECOMMENDED FOR NEW DESIGNS | 2 GHz Ultralow Distortion Differential RF/IF Amplifier |
| Series Voltage References 1 | ||
| ADR130 | PRODUCTION | Precision Series Sub-Band Gap Voltage Reference |
| Single-Ended to Differential Amplifiers 2 | ||
| AD8138 | PRODUCTION | Low Distortion Differential ADC Driver |
| ADA4932-1 | RECOMMENDED FOR NEW DESIGNS | Low Power Differential ADC Driver |
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.
Open ToolAD9238 IBIS Models 1
Visual Analog
For designers who are selecting or evaluating high speed ADCs, VisualAnalog™ is a software package that combines a powerful set of simulation and data analysis tools with a user-friendly graphical interface.
Open ToolAD9238 Simulink ADIsimADC Model
Open ToolEvaluation Kits
AD9238 Evaluation Board