24位模拟 - 数字转换器的温度传感器 24-Bit Analog-to-Digital Converters for Temperature Sensors
The ADS1246, ADS1247, and ADS1248 are highly-integrated, precision, 24-bit analog-to-digital converters ADCs. The devices feature an onboard, low-noise, programmable gain amplifier PGA, a precision delta-sigma ΔΣ ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1247 and ADS1248 also provide a built-in, very low drift voltage reference with 10-mA output capacity, and two matched programmable current digital-to-analog converters DACs. The devices provide a complete front-end solution for temperature sensor applications including thermal couples, thermistors, and resistance temperature detectors RTDs.
An input multiplexer supports four differential inputs for the ADS1248, two for the ADS1247, and one for the ADS1246. In addition, the multiplexer has a sensor burn-out detect, voltage bias for thermocouples, system monitoring, and general-purpose digital I/Os ADS1247 and ADS1248. The onboard, low-noise PGA provides selectable gains of 1 to 128. The ΔΣ modulator and adjustable digital filter settle in only one cycle, for fast channel cycling when using the input multiplexer, and support data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50-Hz and 60-Hz interference are rejected by the filter.
电路数 1
通道数 2
针脚数 20
位数 24
耗散功率 2.3 mW
采样率 2 ksps
功耗 2.3 mW
模数转换数ADC 1
输入数 2, 3
工作温度Max 105 ℃
工作温度Min -40 ℃
输入通道数 2, 3
电源电压Max 5.25 V
电源电压Min 2.7 V
安装方式 Surface Mount
引脚数 20
封装 TSSOP-20
宽度 4.4 mm
封装 TSSOP-20
工作温度 -40℃ ~ 105℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
ADS1247IPWR TI 德州仪器 | 当前型号 | 当前型号 |
ADS1247IPW 德州仪器 | 类似代替 | ADS1247IPWR和ADS1247IPW的区别 |