ICL7106EJL - 3.5-Digit LCD A/D Converter | Maxim Integrated
MPN： ICL7106EJL ✓ 啟用中ICL7106EJL 概覽
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.
直接替換替代品，適用於 ICL7106EJL — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ICL7106EJL （相同外形與佔位） — 差異在於 Conversion Architecture, Converter Type, Display Driver, Display Interface, Package.
ICL7106IP
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ICL7106EJL 最大額定值與電氣特性
| Converter Type | 3.5-digit A/D converter |
| Conversion Architecture | Successive-approximation A/D conversion |
| 供應電壓 | 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 |
| 工作溫度 | 0 C to +70 C |
| 封裝 | CDIP-40 |
| 腳位數 | 40 pins |
| 安裝類型 | Through-hole |
| Product Category | ADCs/DACs - Special Purpose |
| Power Class | Low power |
ICL7106EJL cdip-40 腳位配置指南
ICL7106EJL（cdip-40 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： ICL7106EJL.
請參閱 資料表 以查看完整腳位配置。
典型應用
ICL7106EJL 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 ICL7106EJL — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Integrated LCD-oriented measurement front end (對比General-purpose processor-based ADC systems using MCP3424-E/SL)
- Differential input for measurement signals (對比Single-ended input architectures)
- Through-hole ceramic package suited to instrument construction (對比ICL7106RCPL)
設計說明
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.
合規資訊
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.
