AD7998 8-Channel, 12-Bit ADC with I2C Compatible Interface in 20-Lead TSSOP

The AD7998 is an 8 channel, 12-bit, high speed, low power, successive-approximation ADC. The part operates from a single 2.7 V to 5.5 V power supply and features a conversion time of 2 µs. The part contains an eight channel multiplexer and track/hold amplifier.

The AD7998 provides a two-wire serial interface, which is compatible with I2C interfaces. Each part comes in two versions, AD7998-0 and AD7998-1. Each version allows for a minimum of two different I2C addresses. The I2C interface on the AD7998-0 supports Standard and Fast I2C Interface Modes. The I2C Interface on the AD7998-1 supports Standard, Fast and two High-Speed I2C Interface Modes.

Features and Benefits
  • 12-Bit ADC with Fast Conversion Time: 2 µs
  • Eight Single-Ended Analog Input Channels
  • Specified for VDD of 2.7 V to 5.5 V
  • Low Power Consumption
  • Fast Throughput Rate: - 188 kSPS
  • Sequencer Operatio
  • Automatic Cycle Mode
  • I2C® Compatible Serial Interface
  • I2C® Interface supports:
    Standard, Fast, and High-Speed Modes
  • Out of Range Indicator
  • Pin-Selectable Addressing via AS
  • Automatic Shutdown Mode: - 1 µA max
Analog to Digital Converters
Instrumentation and Measurement
  • Environmental Monitoring
Software & Systems Requirements
Data Sheets
Documentnote
AD7997/AD7998: 8 Channel, 10- and 12-Bit ADCs with I2C Compatible Interface in 20-Lead TSSOP Data Sheet (Rev. 0)PDF 1056 kB
AD7998/AD7997: Errata Data Sheet (Rev. A)PDF 53 kB
Application Notes
Documentnote
AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)PDF 299 kB
AN-686: Implementing an I2C® Reset (Rev. 0)PDF 44 kB
Product Highlight
Documentnote
8- to 18-Bit SAR ADCs ... From the Leader in High Performance AnalogPDF 1885 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD7998BRU-0 Production20 ld TSSOPOTH 75-40 to 85C5.674.75N
AD7998BRU-0REEL Production20 ld TSSOPREEL 2500-40 to 85C00N
AD7998BRU-1 Production20 ld TSSOPOTH 75-40 to 85C6.065.1N
AD7998BRUZ-0 Production20 ld TSSOPOTH 75-40 to 85C5.154.32Y
AD7998BRUZ-0REEL Production20 ld TSSOPREEL 2500-40 to 85C04.32Y
AD7998BRUZ-1 Production20 ld TSSOPOTH 75-40 to 85C5.514.64Y
AD7998BRUZ-1REEL Production20 ld TSSOPREEL 2500-40 to 85C04.64Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-AD7998EBZEvaluation Board59Y
Reference Materials
AD7997/AD7998: 8 Channel, 10- and 12-Bit ADCs with I2C Compatible Interface in 20-Lead TSSOP Data Sheet (Rev. 0) ad7997
AD7998/AD7997: Errata Data Sheet (Rev. A) ad7997
AD7997/AD7998 Evaluation Software ad7997
AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0) ad7476
AN-686: 实现I²C®复位 (Rev. 0) adg729
AN-931: 了解PulSAR ADC支持电路 (Rev. 0) ad7476
AN-686: Implementing an I2C® Reset (Rev. 0) ad7993
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog ad7893
MS-2210：高速ADC的电源设计 ad9861
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