ICL7106EJL - 3.5-Digit LCD A/D Converter | Maxim Integrated
料号： ICL7106EJL ✓ 量产中ICL7106EJL 概述
An A/D converter is an interface integrated circuit that converts an analog voltage into a digital value for measurement, display, control, or data processing. The ICL7106EJL belongs to the specialized ADC and DAC product family, combining a 3.5-digit conversion engine, seven-segment decoder, display driver, reference source, clock, and digital filtering. Unlike a general-purpose ADC requiring an external display controller, it is optimized for multiplexed LCD glass.
The ICL7106 uses differential input architecture, allowing a measurement amplifier and reference arrangement to reject common-mode voltage. Its integrated reference source simplifies standalone designs, while digital filtering helps stabilize displayed results. The EJL ordering code identifies the 15 V, extended-temperature and CDIP-40 variant associated with this product designation.
Typical applications include digital panel meters, laboratory measurement instruments, process-monitoring equipment, temperature controllers, and portable instrumentation. When implementing a circuit, evaluate input overdrive, reference accuracy, LCD segment drive requirements, and the relationship between integration time, noise performance, and conversion speed. The ceramic package also requires attention to thermal dissipation and mechanical handling during soldering and assembly.
This product page combines the manufacturer device description with practical application guidance, pin-package information, design considerations, and sourcing support. For current pricing, inventory, lead time, and delivery options, use the Request a Quote form on this page rather than relying on historical distributor figures.
直接替换替代料： ICL7106EJL ——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： ICL7106EJL （相同外形与封装尺寸） ——差异在于 Conversion Architecture, Converter Type, Display Driver, Display Interface, Package.
ICL7106IP
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →ICL7106EJL 最大额定值与电气特性
| Converter Type | 3.5-digit A/D converter |
| Conversion Architecture | Successive-approximation A/D conversion |
| 电源电压 | 15 V |
| Display Interface | Multiplexed LCD drive |
| Input Architecture | Differential input |
| Integrated Reference | Built-in reference source |
| Digital Filtering | Built-in digital filtering |
| Display Decoder | Integrated seven-segment decoder |
| Display Driver | Integrated LCD display driver |
| Clock | Integrated clock |
| 工作温度 | 0 C to +70 C |
| 封装 | CDIP-40 |
| 引脚数量 | 40 pins |
| 安装类型 | Through-hole |
| Product Category | ADCs/DACs - Special Purpose |
| Power Class | Low power |
ICL7106EJL cdip-40 引脚配置指南
ICL7106EJL（cdip-40 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： ICL7106EJL.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ICL7106EJL 适用于 6 应用s: Digital Panel Meter, Laboratory Voltage Measurement, Process Monitoring Instrument, Temperature Controller Display, Precision Weighing Indicator, Portable Handheld Instrument.
Digital Panel Meter
The ICL7106EJL fits a digital panel meter because it combines a 3.5-digit A/D converter with an integrated seven-segment decoder and multiplexed LCD driver. The differential input allows the meter to work with a balanced sensor or bridge-derived signal, while the built-in reference reduces the number of precision external components. In a 15 V instrument design, the CDIP-40 package can also simplify through-hole prototyping and socket-based assembly. The principal design task is selecting compatible LCD glass and validating that its segment and backplane connections match the converter outputs.
推荐
Laboratory Voltage Measurement
For a laboratory voltage measurement instrument, the ICL7106EJL provides a dedicated display-oriented conversion path rather than requiring a separate processor to format each reading. Its differential input is useful when the source is referenced around a midpoint rather than ground, and the integrated reference supports a straightforward stand-alone meter architecture. Designers should still scale the input to the converter's permitted range, control common-mode voltage, and keep the LCD cable away from sensitive analog nodes to avoid coupling display-drive activity into the measurement.
推荐
Process Monitoring Instrument
The ICL7106EJL is appropriate for industrial process monitoring when a compact panel must show a variable pressure, temperature, or level value without a high-speed sampling requirement. Its integrated clock, reference, digital filtering, and LCD drive simplify a dedicated instrument, while the differential input can reduce sensitivity to offsets in the sensing chain. For reliable operation, separate analog input routing from LCD and supply-current paths, use stable reference components, and verify the chosen operating temperature and supply limits against the production environment.
推荐
Temperature Controller Display
A temperature controller can use the ICL7106EJL to convert a conditioned RTD or thermocouple signal into a direct LCD readout. The 3.5-digit format is suitable for many panel indicators where a numeric setpoint or process value is more useful than a full graphical display. Integrating the converter, reference, filtering, and display drive allows the instrument to retain a compact analog-style front end. Accuracy then depends primarily on the sensor interface, reference stability, input leakage, calibration method, and update speed rather than on display formatting.
推荐
Precision Weighing Indicator
The ICL7106EJL suits a compact weighing indicator built around a bridge-derived differential signal. Its differential A/D input helps preserve small changes in the bridge output, and the integrated digital filtering and LCD interface support a stable numeric display without a display microcontroller. A production design should verify input excitation range, common-mode limits, offset and gain calibration, and whether the chosen integration period meets throughput requirements. The 15 V CDIP-40 implementation is also attractive for through-hole industrial instrument boards.
推荐
Portable Handheld Instrument
The low-power ICL7106EJL architecture is useful in a portable handheld instrument where a dedicated LCD display and simple numeric measurement are more appropriate than a general-purpose processor. Integrating the oscillator, reference, A/D converter, decoder, and LCD driver reduces firmware and board-space requirements, while the 40-pin through-hole package is convenient for ruggedized prototype construction. Battery-powered implementations should account for the converter's operating current, display load, and supply conversion losses, and should preserve adequate input headroom during battery discharge.
推荐
推荐产品汇总
工程参考数据： ICL7106EJL ——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 | ICL7106 |
|---|---|---|
| Package | CDIP-40 | CDIP-40 |
| Brand | Maxim Integrated | Maxim Integrated |
| Converter Type | 3.5-digit A/D converter | 3.5-digit A/D converter |
| Display Interface | Multiplexed LCD drive | Multiplexed LCD drive |
| Input Architecture | Differential input | Differential input |
| Integrated Reference | Built-in reference source | Built-in reference source |
| Digital Filtering | Built-in digital filtering | Built-in digital filtering |
关键差异点
- Integrated LCD-oriented measurement front end （对比 General-purpose processor-based ADC systems using MCP3424-E/SL)
- Differential input for measurement signals （对比 Single-ended input architectures)
- Through-hole ceramic package suited to instrument construction （对比 ICL7106RCPL)
设计说明
Separate the analog input and reference paths from LCD segment outputs and switching-supply nodes. Place the input-network ground return directly at the converter's analog ground structure rather than routing it through display-current paths. Keep the LCD glass connection away from high-impedance input traces, and use a ground or guard strategy appropriate to the board stack-up. This is especially important because the ICL7106 combines sensitive analog conversion with multiplexed display drive on the same ceramic package.
Use the manufacturer's recommended bypass and local supply connections for the 15 V device. Decoupling capacitors should be positioned close to the corresponding power pins, with additional bulk capacitance placed near the supply entry point. Verify capacitor voltage ratings with margin for transients and supply tolerance. The integrated clock and display driver can produce periodic current activity, so the supply network must remain low-impedance during each measurement and display cycle.
Do not treat every ICL7106 ordering suffix as mechanically and electrically interchangeable. The EJL device is identified as a 15 V, 0 C to +70 C, CDIP-40 part, while the related ICL7106RCPL uses a different package. Before substitution, verify every pin, package dimension, temperature grade, supply rating, and display-drive timing parameter. A change in package alone can require a new PCB footprint, solder process, and connector arrangement.
合规信息
A distributor listing identifies ICL7106EJL as RoHS electronic, but no formal RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations were identified in the manufacturer documentation used for this page.
