AD9268
PRODUCTION16-Bit, 125 MSPS/105 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter
- Part Models
- 6
- 1ku List Price
- Starting From $133.58
Part Details
- SNR = 78.2 dBFS @ 70 MHz and 125 MSPS
- SFDR = 88 dBc @ 70 MHz and 125 MSPS
- Low power: 750 mW @ 125 MSPS
- 1.8 V analog supply operation
- 1.8 V CMOS or LVDS output supply
- Integer 1-to-8 input clock divider
- IF sampling frequencies to 300 MHz
- −153.6 dBm/Hz small-signal input noise with 200 Ω input impedance @ 70 MHz and 125 MSPS
- Optional on-chip dither
- Programmable internal ADC voltage reference
- See data sheet for additional features
The AD9268 is a dual, 16-bit, 80 MSPS/105 MSPS/125 MSPS analog-to-digital converter (ADC). The AD9268 is designed to support communications applications where high performance, combined with low cost, small size, and versatility, is desired.
The dual ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth, differential sample-and-hold analog input amplifiers that support a variety of user-selectable input ranges. An integrated voltage reference eases design considerations. A duty cycle stabilizer is provided to compensate for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance.
The ADC output data can be routed directly to the two external 16-bit output ports. These outputs can be set to either 1.8 V CMOS or LVDS.
Flexible power-down options allow significant power savings, when desired.
Programming for setup and control is accomplished using a 3-wire SPI-compatible serial interface.
The AD9268 is available in a 64-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C.
PRODUCT HIGHLIGHTS
- On-chip dither option for improved SFDR performance with low power analog input.
- Proprietary differential input that maintains excellent SNR performance for input frequencies up to 300 MHz.
- Operation from a single 1.8 V supply and a separate digital output driver supply accommodating 1.8 V CMOS or LVDS outputs.
- Standard serial port interface (SPI) that supports various product features and functions, such as data formatting (offset binary, twos complement, or gray coding), enabling the clock DCS, power-down, test modes, and voltage reference mode.
- Pin compatibility with the AD9258, allowing a simple migration from 16 bits to 14 bits. The AD9268 is also pin compatible with the AD9251, AD9231, and AD9204 family of products for lower sample rate, low power applications.
APPLICATIONS
- Communications
- Diversity radio systems
- Multimode digital receivers (3G)
- GSM, EDGE, W-CDMA, LTE,
- CDMA2000, WiMAX, TD-SCDMA
- I/Q demodulation systems
- Smart antenna systems
- General-purpose software radios
- Broadband data applications
- Ultrasound equipment
Documentation
Data Sheet 1
User Guide 2
Application Note 11
Technical Articles 3
Evaluation Design File 3
Circuit Note 1
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 |
|---|---|---|---|
| AD9268BCPZ-105 | 64-Lead LFCSP (9mm x 9mm w/ EP) | ||
| AD9268BCPZ-125 | 64-Lead LFCSP (9mm x 9mm w/ EP) | ||
| AD9268BCPZ-80 | 64-Lead LFCSP (9mm x 9mm w/ EP) | ||
| AD9268BCPZRL7-105 | 64-Lead LFCSP (9mm x 9mm w/ EP) | ||
| AD9268BCPZRL7-125 | 64-Lead LFCSP (9mm x 9mm w/ EP) | ||
| AD9268BCPZRL7-80 | 64-Lead LFCSP (9mm x 9mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
| No Match Found | ||
|
Jun 9, 2021 - 20_0126 Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea |
||
| AD9268BCPZ-105 | PRODUCTION | |
| AD9268BCPZ-125 | PRODUCTION | |
| AD9268BCPZ-80 | PRODUCTION | |
| AD9268BCPZRL7-105 | PRODUCTION | |
| AD9268BCPZRL7-125 | PRODUCTION | |
| AD9268BCPZRL7-80 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Baseband Programmable VGA-Filters 1 | ||
| ADRF6516 | Obsolete | 31 MHz, Dual Programmable Filters and Variable Gain Amplifiers |
| 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 |
| Digital Control VGAs 2 | ||
| AD8372 | RECOMMENDED FOR NEW DESIGNS | 41 dB Range, 1 dB Step Size, Programmable Dual VGA |
| AD8376 | RECOMMENDED FOR NEW DESIGNS | Ultralow Distortion IF Dual VGA |
| Fully Differential Amplifiers 2 | ||
| ADL5561 | RECOMMENDED FOR NEW DESIGNS |
2.9 GHz Ultralow Distortion RF/IF Differential Amplifier |
| ADL5562 | RECOMMENDED FOR NEW DESIGNS | 3.3 GHz Ultralow Distortion RF/IF Differential Amplifier |
| Gain Blocks 2 | ||
| ADL5535 | RECOMMENDED FOR NEW DESIGNS | 20 MHz TO 1.0 GHz IF Gain Block |
| ADL5536 | RECOMMENDED FOR NEW DESIGNS | 20 MHz TO 1.0 GHz IF Gain Block |
| Multiple Output Buck Regulators 1 | ||
| ADP2114 | PRODUCTION | Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator |
| Single-Ended to Differential Amplifiers 2 | ||
| ADA4937-2 | RECOMMENDED FOR NEW DESIGNS | Ultralow Distortion Differential ADC Driver (Dual) |
| ADA4938-2 | RECOMMENDED FOR NEW DESIGNS | Ultralow Distortion Differential ADC Driver (Dual) |
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 ToolAD9268 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 ToolADIsimRF
ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.
Open ToolAD9268 Simulink ADIsimADC Model
Open ToolEvaluation Kits
FPGA-Based Data Capture Kit
Resources
Software
AD9268 Evaluation Board
Resources
Reference Designs
Low Noise, Low Distortion Single-Ended Input Drive Circuit for Differential Input IF Sampling ADCs