AD652SQ:  Monolithic Synchronous Voltage-to-Frequency Converter

The AD652 Synchronous Voltage-to-Frequency Converter (SVFC) is a powerful building block for precision analog-to-digital conversion, offering typical nonlinearity of 0.002% (0.005% maximum) at a 100 kHz output frequency. The inherent monotonicity of the transfer function and wide range of clock frequencies allows the conversion time and resolution to be optimized for specific applications.

The AD652 uses a variation of the popular charge-balancing technique to perform the conversion function. The AD652 uses an external clock to define the full-scale output frequency, rather than relying on the stability of an external capacitor. The result is a more stable, more linear transfer function, with significant application benefits in both single and multichannel systems.

Gain drift is minimized using a precision low drift reference and low TC on-chip thin-film scaling resistors. Furthermore, the initial gain error is reduced to less than 0.5% by the use of laser-wafer-trimming.

The analog and digital sections of the AD652 have been designed to allow operation from a single-ended power source, simplifying its use with isolated power supplies.

The AD652 is available in five performance grades. The 20-pin PLCC packaged JP and KP grades are specified for operation over the 0°C to +70°C commercial temperature range. The 16- pin cerdip-packaged AQ and BQ grades are specified for operation over the -40°C to +85°C industrial temperature range, and the AD652SQ is available for operation over the full -55°C to +125°C extended temperature range.

AD652SQ 特点
AD652SQ 功能框图

AD652 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
5962-9322201MEA 量产 16 ld CerDIP 16 军用
AD652AQ 量产 16 ld CerDIP 16 工业
AD652AQ/+ 量产 16 ld CerDIP 16 工业
AD652BQ 量产 16 ld CerDIP 16 工业
AD652BQ/+ 量产 CERDIP GLASS SEAL 16 工业
AD652JP 量产 20 ld PLCC 20 商业
AD652JP-REEL 量产 20 ld PLCC 20 商业
AD652JP-REEL7 量产 20 ld PLCC 20 商业
AD652JPZ 量产 20 ld PLCC 20 商业
AD652JPZ-REEL 量产 20 ld PLCC 20 商业
AD652JPZ-REEL7 量产 20 ld PLCC 20 商业
AD652KP 量产 20 ld PLCC 20 商业
AD652KPZ 量产 20 ld PLCC 20 商业
AD652KPZ-REEL 量产 20 ld PLCC 20 商业
AD652SE/883B 量产 20 ld LCC 20 军用
AD652SQ 量产 16 ld CerDIP 16 军用
AD652SQ 应用技术支持与电子电路设计开发资源下载
  1. AD652 数据手册DataSheet下载 . pdf
  2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
  3. ADC模数转换器选型指南 . pdf