Features and Benefits
- 1.8 V analog supply operation
- 1.8 V to 3.3 V output supply
- SNR = 71.7 dBc (72.7 dBFS) to 70 MHz input
- SFDR = 85 dBc to 70 MHz input
- Low power: 395 mW @ 125 MSPS
- Differential input with 650 MHz bandwidth
- On-chip voltage reference and sample-and-hold amplifier
- DNL = ±0.4 LSB
- Flexible analog input: 1 V p-p to 2 V p-p range
- Offset binary, Gray code, or twos complement data format
- Data output clock and clock duty cycle stabilizer
- Serial port control
- Built-in selectable digital test pattern generation
- Programmable clock and data alignment
The AD9246 is a monolithic, single 1.8 V supply, 14-bit, 80 MSPS/ 105 MSPS/125 MSPS analog-to-digital converter (ADC), featuring a high performance sample-and-hold amplifier (SHA) and on-chip voltage reference. The product uses a multistage differential pipeline architecture with output error correction logic to provide 14-bit accuracy at 125 MSPS data rates and guarantees no missing codes over the full operating temperature range.
The wide bandwidth, truly differential SHA allows a variety of user-selectable input ranges and offsets, including single-ended applications. It is suitable for multiplexed systems that switch full-scale voltage levels in successive channels and for sampling single-channel inputs at frequencies well beyond the Nyquist rate. Combined with power and cost savings over previously available ADCs, the AD9246 is suitable for applications in communications, imaging, and medical ultrasound.
A differential clock input controls all internal conversion cycles. A 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 formats. A data output clock (DCO) is provided to ensure proper latch timing with receiving logic.
The AD9246 is available in a 48-lead LFCSP_VQ and is specified over the industrial temperature range (−40°C to +85°C).
- The AD9246 operates from a single 1.8 V power supply and features a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families.
- The patented SHA input maintains excellent performance for input frequencies up to 225 MHz.
- The clock DCS maintains overall ADC performance over a wide range of clock pulse widths.
- A standard serial port interface supports various product features and functions, such as data formatting (offset binary, twos complement, or Gray coding), enabling the clock DCS, power-down, and voltage reference mode.
- The AD9246 is pin-compatible with the AD9233, allowing a simple migration from 12 bits to 14 bits.
- Ultrasound equipment
- IF sampling in communications receivers
- IS-95, CDMA-One, IMT-2000
- Battery-powered instruments
- Hand-held scopemeters
- Low cost digital oscilloscopes
Markets and Technologies
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The high speed ADC FIFO evaluation kit includes the latest version of ADC Analyzer and a buffer memory board to capture blocks of digital data from the Analog Devices, Inc., high speed analog-to-digital converter (ADC) evaluation boards. The FIFO board is connected to the PC through a USB port and is used with ADC Analyzer to quickly evaluate the performance of high speed ADCs. Users can view an FFT for a specific analog input and encode rate to analyze SNR, SINAD, SFDR, and harmonic information.
The evaluation kit is easy to set up. Additional equipment needed includes an Analog Devices high speed ADC evaluation board, a signal source, and a clock source. Once the kit is connected and powered, the evaluation is enabled instantly on the PC.
The HSC-ADC-EVALB-DCZ can be used with single and multichannel ADCs and converters with demultiplexed digital outputs.
Features & Benefits
- Buffer memory board for capturing digital data used with high speed ADC evaluation boards to simplify evaluation
- 32 kB FIFO depth at 133 MSPS (upgradable)
- Measures performance with ADC Analyzer™
Real-time FFT and time domain analysis
Analyze SNR, SINAD, SFDR, and harmonics
- Simple USB port interface (2.0)
- Supporting ADCs with serial port interfaces (SPI)
- On-board regulator circuit, no power supply required 6 V, 2 A switching power supply included
- Compatible with Windows 98 (2nd ed.), Windows 2000, Windows ME, and Windows XP
Documentation & Resources
AN-905: VisualAnalog™ Converter Evaluation Tool Version 1.0 User Manual8/18/2020
AN-878: High Speed ADC SPI Control Software (Rev. A)3/20/2018585 kB
AN-1508: Driving the AD9233, AD9246, and AD9254 ADCs in AC-Coupled Baseband Applications (Rev. B)11/17/2017154 K
AN-1408: Using the AD8376 VGA to Drive Wide Bandwidth ADCs for High IF AC-Coupled Applications (Rev. B)7/22/2016140 K
AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B)5/12/2015985 kB
AN-501: Aperture Uncertainty and ADC System Performance (Rev. A)2/14/2015227 K
AN-282: Fundamentals of Sampled Data Systems2/14/20152131 kB
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (Rev. 0)2/14/2015291K
AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (Rev. 0)2/14/2015203 kB
AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)2/14/2015363 kB
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. C)2/14/2015427 K
AN-345: Grounding for Low-and-High-Frequency Circuits2/14/2015455 kB
AN-1142: Techniques for High Speed ADC PCB Layout (Rev. 0)2/2/2012392 kB
AN-737: How ADIsimADC Models an ADC (Rev. B)11/9/2007373 kB
AN-807: Multicarrier WCDMA Feasibility (Rev. 0)11/9/2007969 kB
AN-808: Multicarrier CDMA2000 Feasibility (Rev. 0)11/9/20071535 kB
AN-812: MicroController-Based Serial Port Interface (SPI) Boot Circuit (Rev. 0)9/20/2006441 kB
• Software Download (zip, 21,702,560 bytes)
AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (Rev. 0)7/26/2006262 kB
AN-715: A First Approach to IBIS Models: What They Are and How They Are Generated (Rev. 0)12/14/2004370K
AN-741: Little Known Characteristics of Phase Noise (Rev. 0)11/29/20041679 kB
CN-0051: Driving the AD9233/9246/9254 ADCs in AC-Coupled Baseband Applications9/20/2010111 kB
Designing Power Supplies for High Speed ADC2/1/2012
Improve The Design Of Your Passive Wideband ADC Front-End Network3/26/2010
Matching An ADC To A Transformer7/13/2007
Ask The Application Engineer—36: Wideband A/D Converter Front-End Design Considerations II: Amplifier-or Transformer Drive for the ADC?2/1/2007 Analog Dialogue
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.
AD9246 IBIS Models
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.
AD9246 Companion Parts
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 Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|AD9246BCPZ-105||Material Declaration||Reliability Data||48-Lead LFCSP (7mm x 7mm w/ EP)|
|AD9246BCPZ-125||Material Declaration||Reliability Data||48-Lead LFCSP (7mm x 7mm w/ EP)|
|AD9246BCPZ-80||Material Declaration||Reliability Data||48-Lead LFCSP (7mm x 7mm w/ EP)|
|AD9246BCPZRL7-105||Material Declaration||Reliability Data||48-Lead LFCSP (7mm x 7mm w/ EP)|
|AD9246BCPZRL7-125||Material Declaration||Reliability Data||48-Lead LFCSP (7mm x 7mm w/ EP)|
|AD9246BCPZRL7-80||Material Declaration||Reliability Data||48-Lead LFCSP (7mm x 7mm w/ EP)|
|Wafer Fabrication Data|
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