AD650KNZ:  Voltage-to-Frequency and Frequency-to-Voltage Converter

The AD650 V/F/V (voltage-to-frequency or frequency-to-voltage converter) provides a combination of high frequency operation and low nonlinearity previously unavailable in monolithic form. The inherent monotonicity of the V/F transfer function makes the AD650 useful as a high-resolution analog-to-digital converter. A flexible input configuration allows a wide variety of input voltage and current formats to be used, and an open-collector output with separate digital ground allows simple interfacing to either standard logic families or opto-couplers.

The linearity error of the AD650 is typically 20 ppm (0.002% of full scale) and 50 ppm (0.005%) maximum at 10 kHz full scale. This corresponds to approximately 14-bit linearity in an analog-to-digital converter circuit. Higher full-scale frequencies or longer count intervals can be used for higher resolution conversions. The AD650 has a useful dynamic range of six decades allowing extremely high resolution measurements. Even at 1 MHz full scale, linearity is guaranteed less than 1000 ppm (0.1%) on the AD650KNZ, KP, BD and SD grades.

In addition to analog-to-digital conversion, the AD650 can be used in isolated analog signal transmission applications, phased locked-loop circuits, and precision stepper motor speed controllers. In the F/V mode, the AD650 can be used in precision tachometer and FM demodulator circuits.

The input signal range and full-scale output frequency are user-programmable with two external capacitors and one resistor. Input offset voltage can be trimmed to zero with an external potentiometer.

The AD650KNZ and AD650KNZ are offered in a plastic 14-pin DIP package. The AD650KNZ and AD650KP are available in a 20-pin plastic leaded chip carrier (PLCC). Both plastic packaged versions of the AD650 are specified for the commercial (0°C to +70°C) temperature range. For industrial temperature range (-25°C to +85°C) applications, the AD650KNZ and AD650KNZ are offered in a ceramic package. The AD650SD is specified for the full -55°C to +125°C extended temperature range.

AD650KNZ 特点
AD650KNZ 功能框图

AD650 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
AD650ACHIPS 量产 CHIPS OR DIE - 工业
AD650AD 量产 14 ld Bottom-Brazed CerDIP 14 工业
AD650BD 量产 14 ld Bottom-Brazed CerDIP 14 工业
AD650JN 量产 14 ld PDIP 14 商业
AD650JNZ 量产 14 ld PDIP 14 商业
AD650JP 量产 20 ld PLCC 20 商业
AD650JPZ 量产 20 ld PLCC 20 商业
AD650KN 量产 14 ld PDIP 14 商业
AD650KNZ 量产 14 ld PDIP 14 商业
AD650SD 量产 14 ld Bottom-Brazed CerDIP 14 军用
AD650SD/883B 量产 14 ld Side-Brazed CerDIP 14 军用
AD650KNZ 应用技术支持与电子电路设计开发资源下载
  1. AD650 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