ADS122U04 是一款 24 位精密模数转换器 (ADC)，集成了多种 特性， 能够降低系统成本并减少小型传感器信号测量 应用 中的组件数量。该器件 具有 通过灵活的输入多路复用器 (MUX) 实现的两个差分输入或四个单端输入、一个低噪声可编程增益放大器 (PGA)、两个可编程激励电流源、一个电压基准、一个振荡器以及一个精密温度传感器。
此器件能够以高达 2000 次/秒 (SPS) 采样数据速率执行转换，并且能够在单周期内稳定。针对噪声环境中的工业应用，当采样频率为 20SPS 时，数字滤波器可同时提供 50Hz 和 60Hz 抑制。内部 PGA 提供高达 128 的增益。此 PGA 使得 ADS122U04 非常适合可测量小传感器信号的 应用 ，例如电阻式温度检测器 (RTD)、热电偶、热敏电阻和阻性桥式传感器。
ADS122U04 具有 一个 2 线 UART 兼容接口。在需要电隔离的 应用 中，这种通用异步接收器/发送器 (UART) 接口可最大限度地减少数字隔离通道的数量，从而节省成本、减小布板空间和降低功耗。
ADS122U04 采用无引线的 16 引脚 WQFN 或 16 引脚 TSSOP 封装，额定工作温度范围为 –40°C 至 +125°C。
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| Resolution (Bits) |
| Sample Rate (Max) (kSPS) |
| # Input Channels |
| Interface |
| Operating Temperature Range (C) |
| Package Group |
| Approx. Price (US$) |
| Power Consumption (Typ) (mW) |
| Package Size: mm2:W x L (PKG) |
| Architecture |
| Input Type |
| Multi-Channel Configuration |
| Reference Mode |
| Features |
| Input Range (Max) (V) |
| Input Range (Min) (V) |
| Analog Voltage AVDD (Min) (V) |
| Analog Voltage AVDD (Max) (V) |
| Digital Supply (Min) (V) |
| Digital Supply (Max) (V) |
| INL (Max) (+/-LSB) |
| Rating |
| Sample Rate (Max) (MSPS) |
| ADS122U04 | ADS1220 | ADS122C04 | ADS1247 |
|---|---|---|---|
| 24 | 24 | 24 | 24 |
| 2 | 2 | 2 | 2 |
| 4 | 4 | 4 | 4 |
| UART | SPI | I2C | SPI |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 105 |
| TSSOP WQFN | TSSOP VQFN | TSSOP WQFN | TSSOP |
| 3.95 | 1ku | 3.95 | 1ku | 3.95 | 1ku | 4.45 | 1ku |
| 1.4 | 1.4 | 1.4 | 2.3 |
| 16TSSOP: 32 mm2: 6.4 x 5(TSSOP) 16WQFN: 9 mm2: 3 x 3(WQFN) | 16TSSOP: 32 mm2: 6.4 x 5(TSSOP) 16VQFN: 12 mm2: 3.5 x 3.5(VQFN) | 16TSSOP: 32 mm2: 6.4 x 5(TSSOP) 16WQFN: 9 mm2: 3 x 3(WQFN) | 20TSSOP: 42 mm2: 6.4 x 6.5(TSSOP) |
| Delta-Sigma | Delta-Sigma | Delta-Sigma | Delta-Sigma |
| Differential Single-Ended | Differential Single-Ended | Differential Single-Ended | Differential Single-Ended |
| Multiplexed | Multiplexed | Multiplexed | Multiplexed |
| Ext Int | Ext Int Supply | Ext Int | Ext Int |
| 50/60 Hz Rejection Excitation Current Sources (iDACs) GPIO Oscillator PGA Temp Sensor | 50/60 Hz Rejection Excitation Current Sources (iDACs) Oscillator PGA Temp Sensor | 50/60 Hz Rejection Excitation Current Sources (iDACs) Oscillator PGA Temp Sensor | 50/60 Hz Rejection Excitation Current Sources (iDACs) GPIO Oscillator PGA Temp Sensor |
| 2.85 5.6 | 2.85 5.6 | 2.85 5.6 | 2.125 4.25 |
| -2.85 0 | -2.85 0 | -2.85 0 | -2.125 0 |
| 2.3 | 2.3 | 2.3 | 2.7 |
| 5.5 | 5.5 | 5.5 | 5.25 |
| 2.3 | 2.3 | 2.3 | 2.7 |
| 5.5 | 5.5 | 5.5 | 5.25 |
| 251.7 | 251.7 | ||
| Catalog | Catalog | Catalog | Catalog |
| 0.002 | 0.002 | 0.002 | 0.002 |
| 立即下单 | 立即下单 | 立即下单 | 立即下单 |
