AD7264: True Differential, Dual, 1 MSPS, 14-Bit/12-Bit, 2-Channel SAR ADC With PGA
The AD7264 is a dual, 14-bit, high speed, low power, successive approximation ADC that operates from a single 5 V power supply and features throughput rates of up to 1 MSPS per on-chip ADC (500 kSPS ...More
AD7264: True Differential, Dual, 1 MSPS, 14-Bit/12-Bit, 2-Channel SAR ADC With PGA
Product Description
The AD7264 is a dual, 14-bit, high speed, low power, successive approximation ADC that operates from a single 5 V power supply and features throughput rates of up to 1 MSPS per on-chip ADC (500 kSPS for the AD7264-5). Two complete ADC func-tions allow simultaneous sampling and conversion of two channels. Each ADC is preceded by a true differential analog input with a PGA. There are 14 gain settings available: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128.
The AD7264 contains four comparators. Comparator A and Comparator B are optimized for low power, whereas Comparator C and Comparator D have fast propagation delays. The AD7264 features a calibration function to remove any device offset error and programmable gain adjust registers to allow for input path (for example, sensor) offset and gain compensation. The AD7264 has an on-chip 2.5 V reference that can be disabled if an external reference is preferred. The AD7264 is available in 48-lead LFCSP and LQFP packages.
The AD7264 is ideally suited for monitoring small amplitude signals from a variety of sensors. The parts include all the functionality needed for monitoring the position feedback signals from a variety of analog encoders used in motor control systems.
Product Highlights
- Integrated PGA with a variety of flexible gain settings to allow detection and conversion of low level analog signals.
- Each PGA is followed by a dual simultaneous sampling ADC, featuring throughput rates of 1 MSPS per ADC (500 kSPS for the AD7264-5). The conversion result of both ADCs is simultaneously available on separate data lines or in succession on one data line if only one serial port is available.
- Four integrated comparators that can be used to count signals from pole sensors in motor control applications.
- Internal 2.5 V reference.
- Data Sheet Rev A, 07/2008 (pdf 1398kB)
- (About Data Sheets)
Features
- Dual, simultaneous sampling, 14-bit, 2-channel ADC
- True differential analog inputs
- Programmable gain stage: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, ×128
- Throughput rate per ADC
1 MSPS for AD7264
500 kSPS for AD7264-5
- Analog input impedance: >1 GΩ
- Wide input bandwidth
−3 dB bandwidth: 1.7 MHz at gain = 2 - 4 on-chip comparators
- See Data Sheet for Additional Information
Diagrams
- Enlarge
- Other Diagrams
- Symbols and Footprints
Functional Block Diagram for AD7264
True Differential, Dual, 1 MSPS, 14-Bit/12-Bit, 2-Channel SAR ADC With PGA
Other Diagrams for AD7264
True Differential, Dual, 1 MSPS, 14-Bit/12-Bit, 2-Channel SAR ADC With PGA
AD7264 Pin Configuration
Functional Block Diagram for AD7264
AD7357 - Differential Input, Dual, Simultaneous Sampling, 4.25 MSPS, 14-Bit, SAR ADC
AD7780 - 24-Bit Pin-Programmable Low Power Σ−Δ ADC
AD7192 - 4.8 kHz Ultra-Low Noise 24-Bit Sigma-Delta ADC with PGA
AD7949 - 14-Bit, 8-Channel, 250 kSPS PulSAR® ADC
| Part# | Bits | Throughput Rate | # of Inputs | Operating Pwr Diss |
|---|---|---|---|---|
| AD7264 | 14 | 1MSPS | 2 | 175mW |
| AD7264-5 | 14 | 1MSPS | 2 | 175mW |
| AD7357 | 14 | 4.25MSPS | 2 | 36mW |
| AD9251-20 | 14 | 20MSPS | 2 | 95mW |
| AD7484 | 14 | 3MSPS | 1 | 90mW |
| AD7485 | 14 | 1MSPS | 1 | 80mW |
| AD9243 | 14 | 3MSPS | 1 | 145mW |
| AD9241 | 14 | 1.25MSPS | 1 | 85mW |
| AD7356 | 12 | 5MSPS | 2 | 59mW |
| AD7262 | 12 | 1MSPS | 2 | 175mW |
| AD7352 | 12 | 3MSPS | 2 | 45mW |
AD7264 Model Options
EVAL-CED: Converter Evaluation and Development (CED) Board
| Model | Status | Package | Pins | Temp. Range |
Price* (1000 pcs.) |
Production** Availability |
ROHS Compliant | Samples Cart | Purchase Cart |
|---|---|---|---|---|---|---|---|---|---|
| EVAL-CED1Z | Prodn | EVALUATION BOARDS | - | Comm. | $506.00 | 09/04/2009 | Y | Contact ADI | Add To Cart |
Help
Close- Pre-Release: The model has not been released to general production, but samples may be available.
- Production: The model is currently being produced, and generally available for purchase and sampling.
- Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
- Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
For detailed drawings and chemical composition please consult our Package Site
- Commercial: 0 to +70 degrees Celsius
- Military : -55 to +125 degrees Celsius
- Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
- Automotive: -40 to +125 degrees Celsius
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.
*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.