AD7693 16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential A/D Converter in MSOP/QFN

Its power scales linearly with throughput. Using the SDI input, the SPI-compatible serial interface also features the ability to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply. The AD7693 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C. Applications Battery-powered equipment Data acquisitions Seismic data acquisition systems DVMs Instrumentation Medical instruments

The AD7693 is a 16-bit, successive approximation analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The reference voltage, VREF, is applied externally and can be set up to the supply voltage, VDD. On the CNV rising edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and VREF about VREF/2.

Its power scales linearly with throughput.

Using the SDI input, the SPI-compatible serial interface also features the ability to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply.

The AD7693 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.

Applications
  • Battery-powered equipment
  • Data acquisitions
  • Seismic data acquisition systems
  • DVMs Instrumentation
  • Medical instruments
Features and Benefits
  • 16-bit resolution with no missing codes
  • Throughput: 500 kSPS
  • INL/DNL: ±0.25 LSB typ, ±0.5 LSB max (±8 ppm of FSR)
  • Dynamic range: 96.5 dB
  • SINAD: 96 dB @ 1 kHz
  • THD: −120 dB @ 1 kHz
  • True differential analog input range: ±VREF 0 V to VREF with VREF up to VDD on both inputs
  • No pipeline delay
  • Single-supply 5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
  • Serial interface SPI®/QSPI™/MICROWIRE™/DSP compatible
  • Daisy-chain multiple ADCs, selectable busy indicator
  • Power dissipation: 40 nJ/conversion 
    40 μW @ 5 V/1 kSPS 
    4 mW @ 5 V/100 kSPS 
    18 mW @ 5 V/500 kSPS
Analog to Digital Converters
AD7685 IBIS Models
Data Sheets
Documentnote
AD7693: 16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential ADC in MSOP/LFCSP Data Sheet (Rev. B)PDF 776 kB
Application Notes
Documentnote
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B)PDF 401 kB
AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)PDF 299 kB
AN-932: Power Supply Sequencing (Rev. 0)PDF 95 kB
User Guides
Documentnote
UG-340: Evaluation Board for the 10-Lead Family 14-/16-/18-Bit PulSAR ADCsPDF 4636 kB
UG-682: 6-Lead SOT-23 ADC Driver for the 8-/10-Lead Family of 14-/16-/18-Bit PulSAR ADC Evaluation BoardsPDF 433.96 K
Technical Books
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD7693BCPZRL7 Last Time Buy10 ld LFCSP (3x3mm)REEL 1500-40 to 85C018.22Y
AD7693BRMZ Production10 ld MSOPOTH 50-40 to 85C20.1518.22Y
AD7693BRMZRL7 Production10 ld MSOPREEL 1000-40 to 85C018.22Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-AD7685-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7686-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7687-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7688-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7690-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7691-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7693-PMDZEvaluation Board PMOD compatible form factor27Y
EVAL-AD7693SDZEvaluation Board SDP Interface99Y
EVAL-AD7942-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7946-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7980-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7982-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7983-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7984-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7988-1-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-AD7988-5-PMDZEvaluation Board PMOD compatible form factor 27Y
EVAL-SDP-CB1ZEvaluation Controller Board SDP99Y
SDP-PMD-IB1ZEvaluation Interposer Board PMOD to SDP w/ Power Supply55Y
Reference Materials
AD7693: 16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential ADC in MSOP/LFCSP Data Sheet (Rev. B) ad7693
AD7685 (All Models) ad7685
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B) ad7476
AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0) ad7476
AN-932: 电源时序控制 (Rev. 0) ad7628
AN-931: 了解PulSAR ADC支持电路 (Rev. 0) ad7476
AN-932: Power Supply Sequencing (Rev. 0) ad7660
UG-340: Evaluation Board for the 10-Lead Family 14-/16-/18-Bit PulSAR ADCs ad7685
UG-682: 6-Lead SOT-23 ADC Driver for the 8-/10-Lead Family of 14-/16-/18-Bit PulSAR ADC Evaluation Boards ad7685
MT-002: 奈奎斯特准则对数据采样系统设计有何意义 ad6672
MT-074: 精密ADC用差分驱动器 ad7687
SAR ADC & Driver Quick-Match Guide ad7476
MS-2210:高速ADC的电源设计 ad9861
MS-1779:九项常被忽略的ADC技术规格 ad6672