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ADC122S625

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雙 12 位元、50 kSPS 至 200 kSPS、同步取樣 A/D 轉換器

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產品規格表

ADC122S625

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 2 Interface type Microwire (Serial I/O), SPI Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 105 Power consumption (typ) (mW) 8.6 Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 5.5 SNR (dB) 73.2 Digital supply (min) (V) 4.5 Digital supply (max) (V) 5.5
Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 2 Interface type Microwire (Serial I/O), SPI Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 105 Power consumption (typ) (mW) 8.6 Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 5.5 SNR (dB) 73.2 Digital supply (min) (V) 4.5 Digital supply (max) (V) 5.5
VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • True Simultaneous Sampling Differential Inputs
  • Specified Performance from 50 kSPS to 200 kSPS
  • External Reference
  • Wide Input Common-Mode Voltage Range
  • Single High-Speed Serial Data Output
  • Operating Temperature Range of −40°C to +105°C
  • SPI/QSPI/MICROWIRE/DSP Compatible Serial Interface

Key Specifications

  • Conversion Rate: 50 kSPS to 200 kSPS
  • INL: ±1 LSB (max)
  • DNL: ±0.95 LSB (max)
  • SNR: 71 dBc (min)
  • THD: -72 dBc (min)
  • ENOB: 11.25 bits (min)
  • Power Consumption at 200 kSPS
    • Converting, VA = 5V, VREF = 2.5V: 8.6 mW (typ)
    • Power-Down, VA = 5V, VREF = 2.5V: 2.6 µW (typ)

All trademarks are the property of their respective owners.

  • True Simultaneous Sampling Differential Inputs
  • Specified Performance from 50 kSPS to 200 kSPS
  • External Reference
  • Wide Input Common-Mode Voltage Range
  • Single High-Speed Serial Data Output
  • Operating Temperature Range of −40°C to +105°C
  • SPI/QSPI/MICROWIRE/DSP Compatible Serial Interface

Key Specifications

  • Conversion Rate: 50 kSPS to 200 kSPS
  • INL: ±1 LSB (max)
  • DNL: ±0.95 LSB (max)
  • SNR: 71 dBc (min)
  • THD: -72 dBc (min)
  • ENOB: 11.25 bits (min)
  • Power Consumption at 200 kSPS
    • Converting, VA = 5V, VREF = 2.5V: 8.6 mW (typ)
    • Power-Down, VA = 5V, VREF = 2.5V: 2.6 µW (typ)

All trademarks are the property of their respective owners.

The ADC122S625 is a dual 12-bit, 50 kSPS to 200 kSPS simultaneous sampling Analog-to-Digital (A/D) converter. The analog inputs on both channels are sampled simultaneously to preserve their relative phase information to each other. The converter is based on a successive-approximation register architecture where the differential nature of the analog inputs is maintained from the internal track-and-hold circuits throughout the A/D converter to provide excellent common-mode signal rejection. The ADC122S625 features an external reference that can be varied from 1.0V to VA.

The ADC122S625's serial data output is binary 2's complement and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces. The serial clock (SCLK) and chip select bar (CS) are shared by both channels.

Operating from a single 5V analog supply and a reference voltage of 2.5V, the total power consumption while operating at 200 kSPS is typically 8.6 mW. With the ADC122S625 operating in power-down mode, the power consumption reduces to 2.6 µW. The differential input, low power consumption, and small size make the ADC122S625 ideal for direct connection to sensors in motor control applications.

Operation is specified over the industrial temperature range of −40°C to +105°C and clock rates of 1.6 MHz to 6.4 MHz. The ADC122S625 is available in a 10-lead VSSOP package.

The ADC122S625 is a dual 12-bit, 50 kSPS to 200 kSPS simultaneous sampling Analog-to-Digital (A/D) converter. The analog inputs on both channels are sampled simultaneously to preserve their relative phase information to each other. The converter is based on a successive-approximation register architecture where the differential nature of the analog inputs is maintained from the internal track-and-hold circuits throughout the A/D converter to provide excellent common-mode signal rejection. The ADC122S625 features an external reference that can be varied from 1.0V to VA.

The ADC122S625's serial data output is binary 2's complement and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces. The serial clock (SCLK) and chip select bar (CS) are shared by both channels.

Operating from a single 5V analog supply and a reference voltage of 2.5V, the total power consumption while operating at 200 kSPS is typically 8.6 mW. With the ADC122S625 operating in power-down mode, the power consumption reduces to 2.6 µW. The differential input, low power consumption, and small size make the ADC122S625 ideal for direct connection to sensors in motor control applications.

Operation is specified over the industrial temperature range of −40°C to +105°C and clock rates of 1.6 MHz to 6.4 MHz. The ADC122S625 is available in a 10-lead VSSOP package.
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* Data sheet Dual 12-Bit, 50 kSPS to 200 kSPS, Simultaneous Sampling A/D Converter datasheet (Rev. A) 2013年 3月 20日
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 2015年 5月 21日
User guide ADC122S625 Dual 12Bit, 50 kSPS to 200 kSPS, Simultaneous Sampling ADC User Guide 2012年 2月 21日

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