MAX114CNG+ - 8-Bit, 4-Channel, 1MSPS ADC | Maxim Integrated
料号： MAX114CNG+ ✓ 量产中MAX114CNG+ 概述
An ADC is an analog-to-digital converter, a data-acquisition IC that transforms continuously varying voltage signals into binary values for processing by a microcontroller, computer, or control system. The MAX114 belongs to the data-converter hierarchy, where a multiplexed ADC shares one conversion core among several input channels. Its 1 MSPS conversion rate supports signal monitoring, process measurement, industrial control, instrumentation, and embedded data acquisition.
Key features include 8-bit resolution, four single-ended input channels, a 1 MSPS sampling rate, parallel output configuration, flash ADC architecture, a 1:1 multiplexer-to-sample-and-hold ratio, and a +5 V analog supply. Power-down reduces the shutdown current to 1 µA, making the device useful in portable or intermittently operated systems where standby consumption matters. The commercial temperature grade supports general-purpose equipment rather than harsh automotive environments.
Internally, the four analog inputs are routed by a multiplexer to a sampling circuit and flash conversion core. Because only one conversion core is used, the input multiplexing structure favors compact cost-sensitive designs over simultaneous-sampling systems. The 8-bit resolution provides 256 digital codes per conversion, so input scaling, grounding, and reference stability directly influence measurement resolution and repeatability.
Typical uses include panel-meter and sensor-interface systems, industrial process monitoring, laboratory measurement equipment, battery-powered instruments, and four-channel control systems. The 24-pin DIP package supports prototyping and through-hole assembly but occupies more board area than modern surface-mount packages. Board layouts should route analog inputs away from digital switching nodes and provide a low-impedance return path to the converter ground.
When designing around the MAX114CNG+, verify the complete pinout and analog input range in the manufacturer datasheet before layout because the supplied distributor data does not include the full pin mapping. Input conditioning, bypass capacitors, and external reference design remain essential for obtaining useful accuracy from the 8-bit conversion system. Commercial operation should also be checked against the system’s ambient-temperature envelope.
This page consolidates verified distributor specifications, lifecycle information, package details, drop-in candidate data, and practical selection guidance. The comparison tables and design notes add engineering context beyond a distributor catalog entry while clearly separating verified facts from parameters that still require datasheet confirmation.
直接替换替代料： MAX114CNG+ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
MAX114ENG+
✅ 直接替换联系询价
查看数据手册 →MAX114ENG-T
✅ 直接替换📋 参考替代料（不在目录中）
MAX114CNG-T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX114ANG+
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX114ACP+
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX114CNG+ 最大额定值与电气特性
| Converter Type | 8-bit flash ADC |
| 分辨率 | 8 bit |
| 采样率 | 1 MSPS |
| Number of Inputs | 4 |
| Input Type | Single-ended |
| Data Interface | Parallel |
| ADC Architecture | Flash |
| Multiplexer to Sample-and-Hold Ratio | 1:1 |
| Number of Analog-to-Digital Converters | 1 |
| 电源电压 | +5 V |
| Power-Down Current | 1 µA |
| 封装 | 24-pin DIP |
| Terminal Count | 24 |
| 安装类型 | Through-hole |
| Temperature Grade | Commercial |
| Part Status | Active |
| Moisture Sensitivity Level | MSL 1 |
| Peak Reflow Temperature | 260 °C |
| Maximum Time at Peak Reflow Temperature | 30 s |
| Terminal Finish | Matte tin |
| JESD-609 Code | e3 |
| RoHS 状态 | Compliant |
| External Reference | Required |
MAX114CNG+ 24-pin dip 引脚配置指南
MAX114CNG+（24-pin dip 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： MAX114CNG+.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX114CNG+ 适用于 6 应用s: Industrial Process Monitoring, Battery-Powered Data Acquisition, Laboratory Panel Meters, Embedded Sensor Interface, Control-System Signal Capture, Educational and Prototype Systems.
Industrial Process Monitoring
The MAX114CNG+ fits four-channel industrial monitoring because it combines four single-ended inputs with a 1 MSPS conversion rate in one 24-pin DIP device. A controller can select each sensor through the multiplexer and read the resulting 8-bit code over the parallel interface. The 1 µA power-down current is useful between measurement bursts, although active current and acquisition timing must be checked in the manufacturer datasheet. For noisy factory environments, short sensor traces, solid grounding, filtering close to the converter, and isolation from motors and switching supplies are essential.
推荐
Battery-Powered Data Acquisition
The MAX114CNG+ is suitable for portable data-acquisition modules that periodically sample several sensors. Its 1 µA power-down current reduces standby demand, while the four-channel multiplexer permits one ADC core to serve multiple analog inputs. The converter operates from a +5 V supply and provides 8-bit results through a parallel interface, making it practical for systems with an embedded controller and a dedicated 5 V rail. Energy calculations should combine the verified standby current with the still-unspecified active current, and the power-down timing should be checked before relying on rapid duty-cycled acquisition.
推荐
Laboratory Panel Meters
The MAX114CNG+ can support multichannel laboratory panel meters that display temperature, level, position, or other slow-moving analog measurements. Its 1 MSPS flash conversion rate provides more than enough conversion bandwidth for many panel-meter signals, while four multiplexed inputs reduce the number of converters needed. The 8-bit resolution gives 256 digital codes per conversion, making careful input scaling and reference stability important for readable results. A DIP package is convenient for prototypes and educational instruments, although a compact surface-mount implementation would be preferable in a final handheld enclosure.
推荐
Embedded Sensor Interface
The MAX114CNG+ works well as an embedded front end for four resistive, voltage-output, or conditioned sensor channels. Its single-ended inputs accept selected analog signals, and the 1 MSPS rate supports rapid sequential conversion when the source impedance and acquisition time permit. Because the device uses one flash conversion core, the multiplexer must settle between channel changes; obtain the recommended driver, acquisition-time, and source-impedance limits from the manufacturer datasheet. The parallel bus is straightforward to connect to a microcontroller but requires defined logic levels, grounding, and adequate settling time.
推荐
Control-System Signal Capture
The MAX114CNG+ is applicable to feedback monitoring and supervisory control systems that must observe four analog command or condition signals. A 1 MSPS conversion capability permits the controller to refresh the selected channel rapidly, while the 8-bit result provides enough resolution for coarse diagnostics and basic closed-loop supervision. The DIP package allows straightforward replacement on legacy through-hole control boards, but production designers should verify lifecycle availability and consider a surface-mount ADC for new compact designs. Analog traces should terminate near the converter with suitable bypassing, and digital return currents should not share the sensitive analog ground path.
推荐
Educational and Prototype Systems
The MAX114CNG+ is especially accessible for education and prototype development because it combines four inputs, a 1 MSPS conversion rate, and an 8-bit parallel output in an inspectable 24-pin DIP package. Students can connect potentiometers, dividers, or sensor outputs and observe the converted code directly with a microcontroller or logic interface. The +5 V supply and low 1 µA power-down current simplify demonstrations of sampling concepts, multiplexing, and standby control. Because the supplied snippets do not include the full pin assignment or input range, designers must consult the manufacturer datasheet before wiring the board.
推荐
推荐产品汇总
工程参考数据： MAX114CNG+ ——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 | MAX114ENG+ | MAX114ENG-T | MAX114CNG-T | MAX114ANG+ | MAX114ACP+ |
|---|---|---|---|---|---|---|
| Package | 24-pin DIP | 24-pin DIP | 24-pin DIP | 24-pin DIP | 24-pin DIP | 24-pin DIP |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit |
| Sampling Rate | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS |
| Input Channels | 4 single-ended inputs | 4 single-ended inputs | 4 single-ended inputs | 4 single-ended inputs | 4 single-ended inputs | 4 single-ended inputs |
| Supply Voltage | +5 V | +5 V | +5 V | +5 V | +5 V | +5 V |
| Data Interface | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel |
| Architecture | Flash | Flash | Flash | Flash | Flash | Flash |
| Power-Down Current | 1 µA | 1 µA | 1 µA | 1 µA | 1 µA | 1 µA |
关键差异点
- Four-channel multiplexing in one 24-pin converter （对比 MAX114ENG+)
- Verified low 1 µA shutdown current （对比 MAX114ENG-T)
- Commercial-grade ordering code for general-purpose designs （对比 MAX114ANG+)
- Parallel 8-bit output supports direct digital acquisition （对比 MAX114ACP+)
设计说明
Place the MAX114CNG+ close to the four analog sources and provide separate, low-impedance analog and digital return paths. Keep sensor traces short, use a continuous ground plane, and place input filtering or protection components near the converter pins. The parallel data bus should be routed away from high-current switching nodes, with a defined return path to prevent switching current from entering the reference and analog ground reference point.
Because the four channels are multiplexed into one sample-and-hold circuit, allow the acquisition and multiplexer-settling time specified in the manufacturer datasheet before interpreting a conversion result. Use the recommended source impedance and acquisition sequence, and avoid changing channels immediately before a timing-critical conversion. This is especially important when 1 MSPS is used with high-impedance sensors or long analog traces.
Decouple the +5 V analog supply close to the device and follow the manufacturer’s recommended input, reference, and bypass-capacitor circuit. Verify the reference voltage, input range, supply sequencing, and power-down behavior against the datasheet. The verified 1 µA power-down current applies to shutdown mode and should not be interpreted as the active operating current; the latter remains marked as needed in the specification table.
Do not infer the complete pinout from the 24-pin package count or assume that similarly named MAX114 order codes are interchangeable. Compare the complete connection table, reference configuration, acquisition timing, logic levels, and temperature ratings for MAX114ENG+, MAX114ENG-T, MAX114CNG-T, MAX114ANG+, or MAX114ACP+ before replacing the MAX114CNG+. For new high-volume designs, also evaluate whether the legacy through-hole DIP is appropriate.
合规信息
RoHS status is reported as true in the supplied comparison data. The matte-tin finish and JESD-609 e3 classification support lead-free assembly, but the verified excerpts do not explicitly state REACH, halogen-free, or conflict-minerals status. The part is commercial grade rather than identified as AEC-Q100 qualified.
