AD7418ARM: 10-Bit Digital Temperature Sensor (AD7416) and Four Single-Channel ADCs
The AD7417 and AD7418 are 10-bit, 4-channel and single-channel ADCs with an on-chip temperature sensor that can operate from a single 2.7 V to 5.5 V power supply. The devices contain a 15 μs successive approximation converter, a 5-channel multiplexer, a temperature sensor, a clock oscillator, a track-and-hold, and a reference (2.5 V). The AD7416 is a temperature-monitoring only device in an 8-lead package.
The temperature sensor on the parts can be accessed via multip-lexer Channel 0. When Channel 0 is selected and a conversion is initiated, the resulting ADC code at the end of the conversion gives a measurement of the ambient temperature (±1°C @ 25°C). On-chip registers can be programmed with high and low tempera-ture limits, and an open-drain overtemperature indicator (OTI) output is provided, which becomes active when a programmed limit is exceeded.
A configuration register allows programming of the sense of the OTI output (active high or active low) and its operating mode (comparator or interrupt). A programmable fault queue counter allows the number of out-of-limit measurements that must occur before triggering the OTI output to be set to prevent spurious triggering of the OTI output in noisy environments.
An I²C® compatible serial interface allows the AD7416/AD7417/ AD7418 registers to be written to and read back. The three LSBs of the AD7416/AD7417 serial bus address can be selected, which allows up to eight AD7416/AD7417 devices to be connected to a single bus.
The AD7417 is available in a narrow body, 0.15 inch, 16-lead, small outline package (SOIC) and in a 16-lead, thin shrink, small outline package (TSSOP). The AD7416 and AD7418 are available in 8-lead SOIC and MSOP packages.
产品焦点 Product Highlights
- The AD7416/AD7417/AD7418 have an on-chip temperature sensor that allows an accurate measurement of the ambient temperature (±1°C @ 25°C, ±2°C overtemperature) to be made. The measurable temperature range is −40°C to +125°C. An overtemperature indicator is implemented by carrying out a digital comparison of the ADC code for Channel 0 (temperature sensor) with the contents of the on-chip TOTI setpoint register.
- The AD7417 offers a space-saving, 10-bit analog-to-digital solution with four external voltage input channels, an on-chip temperature sensor, an on-chip reference, and a clock oscillator.
- The automatic power-down feature enables the AD7416/ AD7417/AD7418 to achieve superior power performance. At slower throughput rates, the part can be programmed to operate in a low power shutdown mode, allowing further savings in power consumption
产品应用领域 Applications
- Data acquisition with ambient temperature monitoring
- Industrial process control
- Automotive
- Battery-charging applications
- Personal computers
AD7418ARM 特点
- 10-bit ADC with 15 μs and 30 μs conversion times
- Single and 4 single-ended analog input channels
- On-chip temperature sensor:
−40°C to +125°C - On-chip track-and-hold
- Overtemperature indicator
- Automatic power-down at the end of a conversion
- Wide operating supply range: 2.7 V to 5.5 V
- I²C-compatible serial interface
- Selectable serial bus address allows connection of up to 8 AD7416/AD7417 devices to a single bus
- AD7416 is a superior replacement for LM75
AD7418ARM 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7418ACHIPS | 量产 | CHIPS OR DIE | - | 工业 |
| AD7418ARM | 量产 | 8 ld MSOP | 8 | 工业 |
| AD7418ARM-REEL7 | 量产 | 8 ld MSOP | 8 | 工业 |
| AD7418ARMZ | 量产 | 8 ld MSOP | 8 | 工业 |
| AD7418ARMZ-REEL | 量产 | 8 ld MSOP | 8 | 工业 |
| AD7418ARMZ-REEL7 | 量产 | 8 ld MSOP | 8 | 工业 |
| AD7418ARZ | 量产 | 8 ld SOIC | 8 | 商业 |
| AD7418ARZ-REEL | 量产 | 8 ld SOIC | 8 | 商业 |
| AD7418ARZ-REEL7 | 量产 | 8 ld SOIC | 8 | 商业 |
AD7418ARM 应用技术支持与电子电路设计开发资源下载
- AD7418 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
