AD7264 True Differential, Dual, 1 MSPS, 14-Bit, 2-Channel SAR ADC With PGA

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.

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.
Features and Benefits
  • 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 features.
Analog to Digital Converters
Data Sheets
Documentnote
AD7264: 1 MSPS, 14-Bit, Simultaneous Sampling SAR ADC with PGA and Four Comparators Data Sheet (Rev. C)PDF 1398 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD7264BCPZ Production48 ld LFCSP (7x7x.85mm w/4.1mm Pad)OTH 260-40 to 105C7.746.58Y
AD7264BCPZ-5 Last Time Buy48 ld LFCSP 7x7mm (5.1EP)OTH 260-40 to 105C65.1Y
AD7264BCPZ-5-RL7 Last Time Buy48 ld LFCSP 7x7mm (5.1EP)REEL 750-40 to 105C65.1Y
AD7264BCPZ-RL7 Production48 ld LFCSP (7x7x.85mm w/4.1mm Pad)REEL 750-40 to 105C7.746.58Y
AD7264BSTZ Production48 ld LQFPOTH 250-40 to 105C7.656.5Y
AD7264BSTZ-5 Last Time Buy48 ld LQFPOTH 250-40 to 105C65.1Y
AD7264BSTZ-5-RL7 Last Time Buy48 ld LQFPREEL 500-40 to 105C65.1Y
AD7264BSTZ-RL7 Production48 ld LQFPREEL 500-40 to 105C7.656.5Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-AD7264EDZEvaluation Board59Y
EVAL-CED1ZEvaluation Board249Y
Reference Materials
AD7264: 1 MSPS, 14-Bit, Simultaneous Sampling SAR ADC with PGA and Four Comparators Data Sheet (Rev. C) ad7264
AD7264参考代码 ad7264
MS-2210:高速ADC的电源设计 ad9861