AD7854 3 V to 5 V Single Supply, 200 kSPS, 12-Bit, Parallel Sampling ADC

The AD7854/AD7854L is a high speed, low power, 12-bit ADC that operates from a single 3 V or 5 V power supply, the AD7854 being optimized for speed and the AD7854L for low power. The ADC powers up with a set of default conditions at which time it can be operated as a read-only ADC. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and has a number of power-down options for low power applications.

The AD7854 is capable of 200 kHz throughput rate while the AD7854L is capable of 100 kHz throughput rate. The input track-and-hold acquires a signal in 500 ns and features a pseudo-differential sampling scheme. The AD7854 and AD7854L input voltage range is 0 to VREF (unipolar) and -VREF/2 to +VREF/2, centered at VREF/2 (bipolar). The coding is straight binary in unipolar mode and twos complement in bipolar mode. Input signal range is to the supply and the part is capable of converting full-power signals to 100 kHz.

CMOS construction ensures low power dissipation of typically 5.4 mW for normal operation and 3.6 µW in power-down mode. The part is available in 28-pin, 0.6 inch wide dual-in-line package (DIP), 28-lead small outline (SOIC) and 28-lead small shrink outline (SSOP) packages.

Features and Benefits
  • Specified for VDD of 3 V to 5.5 V
  • Read-Only Operation
  • AD7854–200 kSPS; AD7854L–100 kSPS
  • System and Self-Calibration
  • Flexible Parallel Interface
    12-Bit Parallel/8-Bit Parallel (AD7854)
  • 28-Lead DIP, SOIC and SSOP Packages (AD7854)
  • Low Power:
    - Normal Operation
    AD7854: 15 mW (VDD = 3 V)
    AD7854L: 5.5 mW (VDD = 3 V)
    - Automatic Power-Down After
    Conversion (25 µW)
    AD7854: 1.3 mW 10 kSPS
    AD7854L: 650 µW 10 kSPS
  • Analog to Digital Converters
    Data Sheets
    Documentnote
    AD7854: 3 V to 5 V Single Supply, 200 kSPS 12-Bit Sampling ADCs Data Sheet (Rev. B)PDF 264 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD7854AQ Last Time BuyCERDIP GLASS SEALOTH 12-40 to 85C00N
    AD7854AR Last Time Buy28 ld SOIC - WideOTH 27-40 to 85C00N
    AD7854ARS Production28 ld SSOPOTH 47-40 to 85C00N
    AD7854ARSZ Production28 ld SSOPOTH 47-40 to 85C13.1911.07Y
    AD7854ARZ Production28 ld SOIC - WideOTH 27-40 to 85C13.1911.07Y
    AD7854ARZ-REEL Production28 ld SOIC - WideREEL 1000-40 to 85C011.07Y
    AD7854LARSZ Production28 ld SSOPOTH 47-40 to 85C8.397.04Y
    AD7854LARSZ-REEL Production28 ld SSOPREEL 1500-40 to 85C07.04Y
    AD7854LARZ Last Time Buy28 ld SOIC - WideOTH 27-40 to 85C8.87.39Y
    Reference Materials
    AD7854: 3 V to 5 V Single Supply, 200 kSPS 12-Bit Sampling ADCs Data Sheet (Rev. B) ad7854
    MS-2210:高速ADC的电源设计 ad9861