Catalog
16-Bit, 1 MSPS PulSAR®Unipolar ADC with Ref
Key Features
• 2.5 V Internal Reference: Typical Drift 3 ppm/ºC
• Throughput:1 MSPS (Warp Mode)800 kSPS (Normal Mode)666 kSPS (Impulse Mode)
• INL: ±2.5 LSB Max (±0.0038% of Full Scale)
• 16 Bits Resolution with No Missing Codes
• S/(N+D): 88 dB max @ 20 kHz
• THD: -96 dB max @ 20 kHz
• Analog Input Voltage Range: 0 V to 2.5 V
• No Pipeline Delay
• Parallel and Serial 5 V/3 V Interface
• SPI®/QSPI™/MICROWIRE™/DSP Compatible
• Single 5 V Supply Operation
• Power Dissipation:87 mW typ @ 666 kSPS, 130 µW @ 1 kSPS without REF133 mW typ @1 MSPS with REF
• Package:48-Lead Quad Flat Pack (LQFP)48-Lead Chip Scale Package (LFCSP)Pin-to-Pin Compatible with PulSAR™ADCs
Description
AI
The AD7667 is a 16-bit, 1 MSPS, charge redistribution SAR analog-to-digital converter that operates from a single 5 V power supply. The part contains a high speed 16-bit sampling ADC, an internal conversion clock, internal reference, error correction circuits, and both serial and parallel system interface ports. It features a very high sampling rate mode (Warp), a fast mode (Normal) for asynchronous applications, and a reduced power mode (Impulse) for low power applications where power is scaled with the throughput. The AD7667 is hardware factory-calibrated and comprehensively tested to ensure ac parameters such as signal-to-noise ratio (SNR) and total harmonic distortion (THD) in addition to the more traditional dc parameters of gain, offset, and linearity. Operation is specified from –40°C to +85°C.PRODUCT HIGHLIGHTSFast Throughput.The AD7667 is a 1 MSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry.Superior INL.The AD7667 has a maximum integral nonlinearity of 2.0 LSBs with no missing 16-bit codes.Internal Reference.The AD7667 has an internal reference with a typical temperature drift of 3 ppm/°C.Single-Supply Operation.The AD7667 operates from a single 5 V supply. In Impulse mode, its power dissipation decreases with throughput.Serial or Parallel Interface.Versatile parallel or 2-wire serial interface arrangement is compatible with both 3 V and 5 V logic.APPLICATIONSData AcquisitionInstrumentationDigital Signal ProcessingSpectrum AnalysisMedical InstrumentsBattery-Powered SystemsProcess Control
