AD7476A 12-Bit, 1 MSPS, Low-Power A/D Converter in SC70 and MSOP Packages

First 12-/10-/8-bit ADCs in a SC70 package. High throughput with low power consumption. Flexible power/serial clock speed management. The conversion rate is determined by the serial clock, allowing the conversion time to be reduced through the serial clock speed increase. This allows the average power consumption to be reduced when a power-down mode is used while not converting. The parts also feature a power-down mode to maximize power efficiency at lower throughput rates. Current consumption is 1 µA maximum and 50 nA typically when in power-down mode. Reference derived from the power supply. No pipeline delay. The parts feature a standard successive approximation ADC with accurate control of the sampling instant via a CS input and once-off conversion control.

The AD7476A/AD7477A/AD7478A are 12-bit, 10-bit, and 8-bit high speed, low power, successive-approximation analog-todigital converters (ADCs), respectively. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 13 MHz. The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS, and the conversion is also initiated at this point. There are no pipeline delays associated with the parts. The AD7476A/AD7477A/ AD7478A use advanced design techniques to achieve low power dissipation at high throughput rates. The reference for the part is taken internally from VDD to allow the widest dynamic input range to the ADC. Thus, the analog input range for the part is 0 V to VDD. The conversion rate is determined by the SCLK.

Product Highlights

Applications

Features and Benefits
  • Fast throughput rate: 1 MSPS
  • Specified for VDD of 2.35 V to 5.25 V
  • Low power
  • Wide input bandwidth
  • Flexible power/serial clock speed management
  • No pipeline delays
  • High speed serial interface
  • Standby mode: 1 µA maximum
  • 6-lead SC70 package
  • 8-lead MSOP
  • Qualified for automotive applications
Analog to Digital Converters
Data Sheets
Documentnote
AD7476A/AD7477A/AD7478A: 2.35 V to 5.25 V, 1 MSPS,12-/10-/8-Bit ADCs in 6-Lead SC70 Data Sheet (Rev. G)PDF 625 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
Product Highlight
Documentnote
8- to 18-Bit SAR ADCs ... From the Leader in High Performance AnalogPDF 1885 kB
Technical Books
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD7476AAKSZ-500RL7 Production6 ld SC70OTH 500-40 to 85C4.774.05Y
AD7476AAKSZ-REEL7 Production6 ld SC70REEL 3000-40 to 85C04.05Y
AD7476ABKSZ-500RL7 Production6 ld SC70OTH 500-40 to 85C5.955.06Y
AD7476ABKSZ-REEL7 Production6 ld SC70REEL 3000-40 to 85C05.06Y
AD7476ABRM Last Time Buy8 ld MSOPOTH 50-40 to 85C00N
AD7476ABRM-REEL7 Last Time Buy8 ld MSOPREEL 1000-40 to 85C00N
AD7476ABRMZ Production8 ld MSOPOTH 50-40 to 85C5.354.55Y
AD7476ABRMZ-REEL Production8 ld MSOPREEL 3000-40 to 85C04.55Y
AD7476ABRMZ-REEL7 Production8 ld MSOPREEL 1000-40 to 85C04.55Y
AD7476AWYRMZ Production8 ld MSOPOTH 50-40 to 125C8.577.29Y
AD7476AWYRMZ-RL7 Production8 ld MSOPREEL 1000-40 to 125C07.29Y
AD7476AYKSZ-500RL7 Production6 ld SC70OTH 500-40 to 125C7.146.07Y
AD7476AYKSZ-REEL7 Production6 ld SC70REEL 3000-40 to 125C06.07Y
AD7476AYRMZ Production8 ld MSOPOTH 50-40 to 125C7.146.07Y
AD7476AYRMZ-REEL7 Production8 ld MSOPREEL 1000-40 to 125C06.07Y
Reference Materials
AD7476A/AD7477A/AD7478A: 2.35 V to 5.25 V, 1 MSPS,12-/10-/8-Bit ADCs in 6-Lead SC70 Data Sheet (Rev. G) ad7476a
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B) ad7476
AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0) ad7476
AN-931: 了解PulSAR ADC支持电路 (Rev. 0) ad7476
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog ad7893
MT-031: 实现数据转换器的接地并解开AGND和DGND的谜团 ad6672
MT-002: 奈奎斯特准则对数据采样系统设计有何意义 ad6672
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