描述
ADS1119是一款16位精密模数转换器(ADC),集成了实施常见系统监控功能(如电源电压,电流和温度监控)所需的所有特性。该器件通过灵活的输入多路复用器(MUX),轨至轨输入缓冲器,可编程增益级,电压基准和振荡器实现两个差分输入或四个单端输入。
该器件配备缓冲器,可直接连接高阻抗源。缓冲器可以提供增益级,可选增益有1和4.ADS1119可在数据速率高达每秒1000个样本(SPS)的情况下通过单周期稳定执行转换。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抑制的需求。
ADS1119具有一个与I < sup> 2 C兼容的2线接口,支持高达1Mbps的I 2 C总线速度。可通过两个地址引脚为器件选择16个不同的I 2 C地址。
ADS1119采用无引线的16引脚WQFN或16引TSSOP封装,额定工作温度范围为-40°C至+ 125℃。
特性
- 易于使用,仅通过一个寄存器进行编程
- 电流消耗可以低至 315µA(典型值)
- 宽电源电压范围:2.3V 至 5.5V
- 轨至轨输入缓冲区,可实现高输入阻抗
- 可编程增益:1 和 4
- 可编程数据速率:高达 1kSPS
- 16 位无噪声分辨率(20SPS 时)
- 采用单周期稳定数字滤波器,在 20SPS 时实现同步 50Hz 和 60Hz 抑制
- 两个差分输入或四个单端输入
- 集成 2.048V 基准电压:漂移 5ppm/°C(典型值)
- 集成 2% 精准振荡器
- 与 I2C 兼容的接口
- 支持的 I2C 总线速度模式:
标准模式、快速模式、超快速模式 - 16 引脚可配置 I2C 地址
- 封装:3.0mm × 3.0mm × 0.75mm WQFN
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参数 与其它产品相比 精密 ADCs (<=10MSPS)
Resolution (Bits) Sample Rate (Max) (kSPS) Number of 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 ADS1119 ADS1113 ADS1114 ADS1115 ADS1118 ADS112C04 16 16 16 16 16 16 1 0.86 0.86 0.86 0.86 4 4 1 1 4 4 4 I2C I2C I2C I2C SPI I2C -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 TSSOP | 16
WQFN | 16 VSSOP | 10
X2QFN | 10 VSSOP | 10
X2QFN | 10 VSSOP | 10
X2QFN | 10 VSSOP | 10
X2QFN | 10 TSSOP | 16
WQFN | 16 1.95 | 1ku 2.15 | 1ku 2.30 | 1ku 2.30 | 1ku 1 0.3 0.3 0.3 0.3 1.4 16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16) 10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10) 10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10) 10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10) 10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10) 16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16) Delta-Sigma Delta-Sigma Delta-Sigma Delta-Sigma Delta-Sigma Delta-Sigma Differential
Single-Ended Differential
Single-Ended Differential
Single-Ended Differential
Single-Ended Differential
Single-Ended Differential
Single-Ended Multiplexed
Multiplexed Multiplexed Multiplexed Ext
Int Int Int Int Int Ext
Int 50/60 Hz Rejection
Oscillator
PGA Oscillator
Small Size Comparator
Oscillator
PGA
Small Size Comparator
Oscillator
PGA Oscillator
PGA
Temp Sensor
Small Size 50/60 Hz Rejection
Excitation Current Sources (iDACs)
Oscillator
PGA
Temp Sensor
Small Size 5.5 5.5 5.5 5.5 5.5 2.85
5.6 0 0 0 0 0 -2.85
0 2.3 2 2 2 2 -2.5
2.3 5.5 5.5 5.5 5.5 5.5 2.5
5.5 2.3 2 2 2 2 -2.5
2.3 5.5 5.5 5.5 5.5 5.5 2.5
5.5 1 1 1 1 Catalog Catalog Catalog Catalog Catalog Catalog
方框图
- ADS1119 - 功能方框图