AD537KH: Integrated Circuit Voltage-to-Frequency Converter
The AD537 is a monolithic V-F converter consisting of an input amplifier, a precision oscillator system, an accurate internal reference generator and a high current output stage. Only a single external RC network is required to set up any full-scale (F.S.) frequency up to 100 kHz and any F.S. input voltage up to ±30 V. Linearity error is as low as ±0.05% for 10 kHz F.S., and operation is guaranteed over an 80 dB dynamic range. The overall temperature coefficient (excluding the effects of external components) is typically ±30 ppm/°C. The AD537 operates from a single supply of 5 V to 36 V and consumes only 1.2 mA quiescent current.
A temperature-proportional output, scaled to 1.00 mV/K, enables the circuit to be used as a reliable temperature-to-frequency converter; in combination with the fixed reference output of 1.00 V, offset scales such as 0°C or 0°F can be generated.
The low drift (1µV/°C typ) input amplifier allows operation directly from small signals (e.g., thermocouples or strain gages) while offering a high (250 M(Ohm) input resistance. Unlike most V-F converters, the AD537 provides a square-wave output, and can drive up to 12 TTL loads, LEDs, very long cables, etc.
The excellent temperature characteristics and long-term stability of the AD537 are guaranteed by the primary bandgap reference generator and the low T.C. silicon chromium thin film resistors used throughout.
The device is available in either a TO-116 ceramic DIP or a TO-100 metal can; both are hermetically sealed packages.
The AD537 is available in three performance/temperature grades; the J and K grades are specified for operation over the 0°C to +70°C range while the AD537S is specified for operation over the extended temperature range, -55°C to +125°C.
AD537KH 特点
- Low Cost A-D Conversion
- Versatile Input Amplifier
- Positive or Negative Voltage Modes
- Negative Current Mode
- High Input Impedance, Low Drift - Single Supply, 5 V to 36 V
- Linearity: ±0.05% FS
- Low Power: 1.2 mA Quiescent Current
- Full-Scale Frequency up to 100 kHz
- 1.00 V Reference
- Thermometer Output (1 mV/K)
- F-V Applications
- MIL-STD-883 Compliant Versions Available
AD537KH 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD537JCHIPS | 量产 | CHIPS OR DIE | - | 商业 |
| AD537JD | 量产 | 14 ld Bottom-Brazed CerDIP | 14 | 商业 |
| AD537JH | 量产 | 10 ld TO_100 | 10 | 商业 |
| AD537KD | 量产 | 14 ld Bottom-Brazed CerDIP | 14 | 商业 |
| AD537KH | 量产 | 10 ld TO_100 | 10 | 商业 |
| AD537SD | 量产 | 14 ld Bottom-Brazed CerDIP | 14 | 军用 |
| AD537SD/883B | 量产 | 14 ld Bottom-Brazed CerDIP | 14 | 军用 |
| AD537SH | 量产 | 10 ld TO_100 | 10 | 军用 |
| AD537SH/883B | 量产 | 10 ld TO_100 | 10 | 军用 |
AD537KH 应用技术支持与电子电路设计开发资源下载
- AD537 数据手册DataSheet下载 . pdf
- Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
- ADC模数转换器选型指南 . pdf
