AD7766 24-Bit, 8.5 mW, 109 dB, 128 kSPS/64 kSPS/32 kSPS ADCs

The AD7766/AD7766-1/AD7766-2 are high performance, 24-bit, oversampled SAR analog-to-digital converters (ADCs). The AD7766/AD7766-1/AD7766-2 combine the benefits of a large dynamic range and input bandwidth, consuming 15 mW, 10.5 mW, and 8.5 mW power, respectively, and are contained in a 16-lead TSSOP package.

Ideal for ultralow power data acquisition (such as PCI- and USBbased systems), the AD7766/AD7766-1/AD7766-2 provide 24-bit resolution. The combination of exceptional SNR, wide dynamic range, and outstanding dc accuracy make the AD7766/AD7766-1/ AD7766-2 ideally suited for measuring small signal changes over a wide dynamic range. This is particularly suitable for applications where small changes on the input are measured on larger ac or dc signals. In such an application, the AD7766/AD7766-1/ AD7766-2 accurately gather both ac and dc information.

The AD7766/AD7766-1/AD7766-2 include an on-board digital filter (complete with linear phase response) that acts to eliminate out-of-band noise by filtering the oversampled input voltage. The oversampled architecture also reduces front-end antialias requirements. Other features of the AD7766/AD7766-1/AD7766-2 include a SYNC/PD (synchronization/power-down) pin, allowing the synchronization of multiple AD7766/AD7766-1/AD7766-2 devices. The addition of an SDI pin provides the option of daisy chaining multiple AD7766/AD7766-1/AD7766-2 devices.

The AD7766/AD7766-1/AD7766-2 operate from a 2.5 V supply using a 5 V reference. The devices operate from −40°C to +105°C.

Applications

Features and Benefits
  • Download AD7766-2-KGD Data Sheet. Available as Known Good Die and fully guaranteed in data sheet specifications
  • Oversampled successive approximation (SAR) architecture
  • High performance ac and dc accuracy, low power
  • 115.5 dB dynamic range, 32 kSPS (AD7766-2)
  • 112.5 dB dynamic range, 64 kSPS (AD7766-1)
  • 109.5 dB dynamic range, 128 kSPS (AD7766)
  • −112 dB THD
  • Exceptionally low power
  • 8.5 mW, 32 kSPS (AD7766-2)
  • 10.5 mW, 64 kSPS (AD7766-1)
  • 15 mW, 128 kSPS (AD7766)
  • High dc accuracy
  • 24 bits, no missing codes (NMC)
  • INL: ±6 ppm (typical), ±15 ppm (maximum)
  • Low temperature drift
  • Zero error drift: 15 nV/°C
  • Gain error drift: 0.4 ppm/°C
  • See data sheet for additional features
  • Analog to Digital Converters
    Software & Systems Requirements
    Data Sheets
    Documentnote
    AD7766: 24-Bit, 8.5 mW, 109 dB, 128 kSPS/64 kSPS/32 kSPS ADCs Data Sheet (Rev. C)PDF 1724 kB
    AD7766-2: Known Good Die Data SheetPDF 235.88 K
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD7766-2-KGD-WP ProductionLFCSP SIDESOLDERABLEREEL 0-40 to 105C0125Y
    AD7766BRUZ Production16 ld TSSOPOTH 96-40 to 105C6.666.02Y
    AD7766BRUZ-1 Production16 ld TSSOPOTH 96-40 to 105C6.666.02Y
    AD7766BRUZ-1-RL7 Production16 ld TSSOPREEL 1000-40 to 105C06.02Y
    AD7766BRUZ-2 Production16 ld TSSOPOTH 96-40 to 105C6.666.02Y
    AD7766BRUZ-2-RL7 Production16 ld TSSOPREEL 1000-40 to 105C06.02Y
    AD7766BRUZ-RL7 Production16 ld TSSOPREEL 1000-40 to 105C06.02Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-AD7766-1EDZ24-bit, 64ksps, 10.5mW ADC, 16-bit linearity, with 109dB Dynamic Range Evaluation Board59Y
    EVAL-AD7766-2EDZ24-bit, 32ksps, 8.5mW ADC, 16-bit linearity, with 109dB Dynamic Range Evaluation Board59Y
    EVAL-AD7766EDZ24-bit, 128ksps, 15mW ADC, 16-bit linearity, with 109dB Dynamic Range Evaluation Board59Y
    EVAL-CED1ZEvaluation Control Board – FPGA based, acquires data from ADC card and uploads via USB to PC using evaluation board software249Y
    Reference Materials
    AD7766: 24-Bit, 8.5 mW, 109 dB, 128 kSPS/64 kSPS/32 kSPS ADCs Data Sheet (Rev. C) ad7766
    AD7766-2: Known Good Die Data Sheet ad7766
    AD7766参考代码 ad7766
    AD7766 评估软件 ad7766
    MS-2210:高速ADC的电源设计 ad9861