ADS1118IDGSR - 16-Bit 860-SPS 4-Channel ADC | TI
料号： ADS1118IDGSR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.464 | $2.46 |
| 10 | $2.464 | $24.64 |
| 100 | $2.464 | $246.40 |
| 500 | $2.464 | $1,232.00 |
| 1,000 | $2.464 | $2,464.00 |
ADS1118IDGSR 概述
An ADC converts continuous analog voltage into a numeric value for processing, measurement, or control. The ADS1118 belongs to the delta-sigma ADC class, where an internal modulator and digital filter shape the conversion result. Its integrated PGA allows low-level sensor signals to be amplified before conversion, while the internal reference, oscillator, and temperature sensor reduce the number of external support components required in compact measurement designs.
The main headline specifications are 16-bit resolution, conversion rates up to 860 samples per second, four analog input channels, and operation across a -40°C to +125°C temperature range. The device supports SPI-compatible serial communication and is offered in a small 10-pin VSSOP package. The integrated reference and temperature sensor are especially useful for sensor measurements, thermocouple-related monitoring, and systems requiring a compact analog front end.
The delta-sigma architecture provides high resolution for low-frequency and slowly changing signals, while the programmable gain amplifier supports a range of input amplitudes. The internal oscillator allows operation without an external clock, which can simplify PCB design and reduce component count. The ADC is suitable when deterministic digital readout, modest conversion speed, and low power consumption are more important than very high sample rates.
Typical applications include industrial process monitoring, temperature sensing, pressure and strain-signal acquisition, portable instrumentation, environmental measurement, and low-power embedded sensing. The integrated temperature sensor can provide a local temperature reading, while the analog channels support external sensors such as thermistors, resistive bridges, potentiometers, and other slowly varying analog sources.
A key design consideration is analog signal conditioning and PCB layout. The sensor input must stay within the ADC input range, and the PGA gain must be selected so that the conditioned signal uses the converter’s available resolution without overloading the input. Decoupling capacitors should be placed close to the power pins, and the analog and digital return paths should be arranged to minimize noise coupling into the measurement channels. The 860-SPS maximum rate also means that applications requiring faster sampling need a different ADC architecture.
This page combines the manufacturer’s published ADS1118 features, distributor pricing and availability signals, package information, application guidance, and drop-in replacement analysis for engineers evaluating the ADS1118IDGSR.
直接替换替代料： ADS1118IDGSR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADS1118IDGSR （相同外形与封装尺寸） ——差异在于 Package, Resolution.
快速对比工具——选择替代料号进行并排对比：
ADS1118IDGST
✅ 直接替换📋 参考替代料（不在目录中）
ADS1118IRUGR
✅ 直接替换📋 参考替代料（不在目录中）
ADS1118QDGSRQ1
✅ 直接替换✓ 有现货
$3.32 / 个
查看数据手册 →ADS1114IDGST
✅ 直接替换📋 参考替代料（不在目录中）
ADS1112IDGSR
✅ 直接替换📋 参考替代料（不在目录中）
ADS1118IDGSR 最大额定值与电气特性
| 分辨率 | 16 bit |
| Conversion Rate | 860 samples/s |
| Analog Input Channels | 4 channels |
| ADC Architecture | Delta-sigma ADC |
| Programmable Gain Amplifier | Integrated PGA |
| Integrated Reference | Internal voltage reference |
| Integrated Oscillator | Internal oscillator |
| Temperature Sensor | Integrated high-accuracy temperature sensor |
| Digital Interface | SPI-compatible serial interface |
| 封装 | 10-VSSOP |
| 工作温度 | -40°C to +125°C |
| 生命周期状态 | Active |
| RoHS 状态 | Compliant |
| Lead Time | 3-7 business days |
| Datasheet Revision | Rev. F |
| Supplier Package Description | 10-MSOP / 10-TFSOP |
| Product Category | Analog to Digital Converter |
ADS1118IDGSR 10-msop / 10-tfsop 引脚配置指南
ADS1118IDGSR（10-msop / 10-tfsop 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： ADS1118IDGSR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADS1118IDGSR 适用于 6 应用s: Industrial Process Monitoring, Temperature and Thermistor Sensing, Pressure and Strain-Signal Acquisition, Portable Environmental Monitoring, Battery-Powered Sensor Nodes, Precision Data Acquisition.
Industrial Process Monitoring
The ADS1118IDGSR fits industrial process monitoring because it combines 16-bit resolution, four analog input channels, and an integrated PGA in a compact 10-VSSOP. It can acquire slowly changing pressure, flow, level, or position signals without requiring a separate high-resolution ADC. The internal reference and oscillator reduce external support circuitry, while the 860-SPS rate is appropriate for supervisory measurements rather than fast process waveforms. A robust implementation should include input protection, filtering, calibration, and isolation where required by the plant environment.
推荐
Temperature and Thermistor Sensing
The ADS1118IDGSR is suitable for temperature sensing because it includes an internal temperature sensor and four analog channels for external sensor signals. Its PGA can amplify small resistance-derived voltage changes from thermistors or RTDs, while the internal reference supports repeatable digital measurement. The ADC is especially useful when a compact controller needs both local temperature information and remote analog measurements. Designers still need to select the proper excitation, input divider, protection network, and conversion mode for the target sensor.
推荐
Pressure and Strain-Signal Acquisition
The integrated programmable gain amplifier makes ADS1118IDGSR useful for low-level bridge or strain-gauge signals that need resolution before conversion. With four analog inputs, it can monitor one active sensor plus additional temperature or reference channels. The 16-bit converter and 860-SPS maximum rate are appropriate for slow force, pressure, and load-cell measurements, while the small package supports compact instrumentation. The analog front end must control excitation drift, input common-mode range, filtering, and calibration to preserve measurement accuracy.
推荐
Portable Environmental Monitoring
ADS1118IDGSR supports portable environmental monitoring by combining low-power operation, integrated conversion functions, and a compact package. It can measure light, resistive, capacitive, or other slowly changing environmental signals while the internal temperature sensor provides local status information. The four-channel ADC allows multiple sensors to share one measurement front end, and the internal oscillator avoids a mandatory external clock. Battery life depends on the selected conversion mode, sampling interval, PGA gain, and sleep strategy, so firmware should disable conversions between measurements when appropriate.
推荐
Battery-Powered Sensor Nodes
The ADS1118IDGSR is appropriate for battery-powered sensor nodes where every external component affects enclosure size and standby power. Its integrated PGA, voltage reference, oscillator, and temperature sensor consolidate multiple functions into one ADC package. The 16-bit resolution can improve the usable dynamic range of low-level analog sensors, while the 860-SPS ceiling is more than adequate for many environmental and condition-monitoring nodes. To maximize battery life, select the lowest useful PGA gain, use the appropriate data rate, batch SPI transactions, and place the converter into a power-saving state between samples.
推荐
Precision Data Acquisition
The ADS1118IDGSR is useful for compact precision data-acquisition modules that measure multiple low-speed analog channels through an SPI host controller. Four inputs provide flexibility for sensor multiplexing, diagnostics, or reference channels, while the integrated PGA and reference reduce analog front-end complexity. Its 16-bit output and 860-SPS maximum rate are well matched to laboratory, control, and condition-monitoring measurements. For systems needing simultaneous sampling, high-frequency waveforms, or substantially faster throughput, a dedicated higher-speed ADC architecture would be more appropriate.
推荐
推荐产品汇总
工程参考数据： ADS1118IDGSR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADS1118IDGST | ADS1118IRUGR | ADS1118QDGSRQ1 | ADS1114IDGST | ADS1112IDGSR |
|---|---|---|---|---|---|---|
| Package | 10-VSSOP | 10-VSSOP family candidate | 10-pin family candidate | 10-VSSOP family candidate | 10-VSSOP family candidate | 10-VSSOP family candidate |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
关键差异点
- Integrated measurement front end （对比 ADS1118IDGST)
- Four-channel precision conversion （对比 ADS1112IDGSR)
- Wide specified temperature operation （对比 ADS1114IDGST)
- Active commercial sourcing （对比 ADS1118IRUGR)
设计说明
Place the ADC supply bypass capacitor as close as possible to the device power pins, and route analog inputs away from SPI clock and data traces. Keep sensor returns and the analog ground path compact, while separating noisy switching-current paths from the measurement inputs. Because the converter provides 16-bit resolution, small layout-induced errors can become significant if analog traces are long, adjacent to high-current paths, or inadequately shielded.
Do not select PGA gain without checking the maximum input voltage of the selected channel and the actual sensor output range. Excessive gain can overload the ADC, while insufficient gain leaves unused resolution and increases effective quantization error. Also verify the input configuration for single-ended versus differential measurements; the ADS1118 is a 4-channel ADC, but the exact channel multiplexing and input limits must follow the manufacturer pin configuration and datasheet.
SPI clock edges and digital control signals can couple into the analog inputs if the analog front end is laid out poorly. Use a continuous ground reference, avoid routing sensitive sensor inputs beneath or beside the digital interface, and consider an input RC filter with values selected from the required bandwidth. The 860-SPS ceiling is not a substitute for input filtering; filtering must account for sensor noise, ADC settling, and the selected PGA gain.
The ADS1118IDGSR is intended for low-power measurement systems, so firmware can reduce energy consumption by using a suitable conversion data rate, batching SPI reads, and disabling conversions between samples. Confirm the device’s low-power modes and current specifications from the manufacturer datasheet before estimating battery life. External sensor excitation and front-end amplifier current may dominate the total system consumption even when the ADC itself is operating efficiently.
合规信息
The verified FindMyChip result explicitly identifies ADS1118IDGSR as RoHS Compliant. REACH, AEC-Q100 status, lead-free status, halogen-free status, and conflict-minerals information were not explicitly confirmed in the supplied data.
