AD7914 4-Channel, 1 MSPS, 10-Bit A/D Converter with Sequencer in 16-Lead TSSOP

The AD7904/AD7914/AD7924 are, respectively, 8-bit, 10-bit, and 12-bit, high speed, low power, 4-channel successive approxi-mation ADCs. The parts operate from a single 2.7 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 8 MHz.

The conversion process and data acquisition are controlled using CS and the serial clock signal, allowing the device to easily inter-face with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. There are no pipeline delays associated with the part.

The AD7904/AD7914/AD7924 use advanced design techniques to achieve very low power dissipation at maximum throughput rates. At maximum throughput rates, the AD7904/AD7914/ AD7924 consume 2 mA maximum with 3 V supplies; with 5 V supplies, the current consumption is 2.7 mA maximum.

Through the configuration of the control register, the analog input range for the part can be selected as 0 V to REFIN or 0 V to 2 × REFIN, with either straight binary or twos complement output coding. The AD7904/AD7914/AD7924 each feature four single-ended analog inputs with a channel sequencer to allow a pre-programmed selection of channels to be converted sequentially.

The conversion time for the AD7904/AD7914/AD7924 is determined by the SCLK frequency, which is also used as the master clock to control the conversion.

Features and Benefits
  • Fast throughput rate: 1 MSPS
  • Specified for AVDD of 2.7 V to 
    5.25 V
  • Low power:
    6 mW maximum at 1 MSPS with 3 V supplies
    13.5 mW maximum at 1 MSPS with 
    5 V supplies
  • 4 single-ended inputs with sequencer
  • Wide input bandwidth:
    AD7924, 70 dB SNR at 50 kHz input frequency
  • Flexible power/serial clock speed management
  • No pipeline delays
  • High speed serial interface: SPI/QSPI™/ MICROWIRE™/DSP compatible
  • Shutdown mode: 0.5 μA maximum
  • 16-lead TSSOP package
  • Qualified for automotive applications
Analog to Digital Converters
Data Sheets
Documentnote
AD7904/AD7914/AD7924: 4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP Data Sheet (Rev. C)PDF 435 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
AD7914BRUZ Production16 ld TSSOPOTH 96-40 to 85C4.233.56Y
AD7914BRUZ-REEL7 Production16 ld TSSOPREEL 1000-40 to 85C03.56Y
AD7914WYRUZ-REEL7 Production16 ld TSSOPREEL 1000-40 to 125C03.52Y
Reference Materials
AD7904/AD7914/AD7924:内置序列器的4通道、1 MSPS、8位模数转换器,采用16引脚TSSOP封装 (Rev. C) ad7904
AD7904/AD7914/AD7924: 4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP Data Sheet (Rev. C) ad7904
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