ICL7107CPL+ - 3.5-Digit Display ADC | Maxim Integrated
MPN： ICL7107CPL+ ✓ 啟用中ICL7107CPL+ 概覽
An analog-to-digital converter, or ADC, converts an analog input voltage into a digital value that can be processed, displayed, or transmitted. The ICL7107CPL+ belongs to the broader ADC > data-converter > semiconductor hierarchy. Its integrated dual-slope conversion system is intended for instrumentation applications where moderate resolution, low component count, and direct display output are more important than high-speed sampling.
The ICL7107CPL+ includes polarity and digit drivers, segment decoders, an internal voltage reference, and a clock circuit. According to the Analog Devices product page, the dual-slope conversion technique automatically rejects interference signals commonly encountered in industrial environments. True differential input and reference connections also support ratiometric measurements such as resistance and bridge-transducer measurements.
The ICL7107CPL+ supports approximately 3 samples per second and includes a zero-integrator phase that improves settling behavior. Its integrated display interface reduces the number of external components needed for a complete measurement panel. The 40-pin PDIP package is suitable for through-hole industrial, laboratory, educational, and legacy control equipment where a large DIP footprint and direct LED display connection are practical.
Typical uses include digital panel meters, laboratory voltmeters, temperature indicators, process monitoring instruments, and low-speed sensor interfaces. Because the converter is display-oriented rather than a high-speed sampling ADC, it is most appropriate for continuously updated numerical measurements rather than waveform acquisition, communication receivers, or precision automation channels.
A successful design must provide suitable input, reference, and supply bypassing while following the manufacturer’s recommended component values and timing arrangement. LED displays impose load-dependent supply current, so the power source and decoupling should be checked at minimum operating voltage and maximum digit current. For a substitute, verify the complete 40-pin assignment, LED versus LCD output type, reference behavior, sampling interval, and timing before approving a drop-in replacement.
This page combines the verified product, distributor, and cross-reference information with a drop-in-focused comparison, practical design guidance, and explicit data gaps. It highlights where published sources confirm package and function and where engineers must consult the detailed datasheet before production substitution.
直接替換替代品，適用於 ICL7107CPL+ — 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： ICL7107CPL+ （相同外形與佔位） — 差異在於 Display Output, Input Impedance.
ICL7107CPL
✅ 直接替換📋 參考替代品（不在目錄中）
ICL7107CJL
✅ 直接替換📋 參考替代品（不在目錄中）
TC7107CPL
✅ 直接替換📋 參考替代品（不在目錄中）
TC7107IPL
✅ 直接替換📋 參考替代品（不在目錄中）
ICL7106CPL+
✅ 直接替換聯絡詢價
查看資料表 →ICL7107CPL+ 最大額定值與電氣特性
| Product Type | 3.5-digit display-driving analog-to-digital converter |
| Conversion Resolution | 3.5 digits |
| Conversion Rate | 3 samples per second |
| 封裝 | 40-pin PDIP |
| 腳位數 | 40 pins |
| 安裝類型 | Through-hole |
| Display Output | Seven-segment LED display driver |
| Integrated Functions | Seven-segment decoder, display driver, voltage reference, clock, polarity driver, and digit driver |
| Conversion Technique | Dual-slope conversion |
| Input Configuration | True differential input |
| Reference Configuration | True differential reference |
| Input Impedance | Very high; numeric value not provided |
| External Display Drive Circuitry | Not required |
| Zero-Integrator Phase | Included |
ICL7107CPL+ 40-pin pdip 腳位配置指南
ICL7107CPL+（40-pin pdip 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。
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請參閱 資料表 以查看完整腳位配置。
典型應用
ICL7107CPL+ 適用於 6 應用s: Digital Panel Meters, Laboratory Voltmeters, Temperature Measurement Instruments, Industrial Process Monitoring, Resistance and Bridge Measurement, Educational and Bench Instruments.
Digital Panel Meters
The ICL7107CPL+ fits digital panel meters because it combines a 3.5-digit ADC with seven-segment decoding, digit and polarity drivers, an internal reference, and a clock in one 40-pin PDIP device. Its approximately 3 samples per second update rate is suitable for continuously refreshed numerical readings rather than waveform capture. Integrating the display interface reduces the board area and external component count compared with a separate ADC and display controller. In an industrial instrument, the dual-slope conversion method also provides inherent rejection of interference common in industrial environments. Designers should still account for LED current, supply bypassing, reference stability, and input conditioning, and they should confirm the complete pin assignments in the official Analog Devices data sheet before layout release.
推薦
Laboratory Voltmeters
The ICL7107CPL+ is suitable for laboratory voltmeter front ends that require a stable numerical display and relatively slow measurement updates. Its true differential input and reference architecture supports measurement arrangements in which signal and reference behavior must be considered together, while the integrated reference and clock simplify a self-contained instrument. The approximately 3 samples per second rate is appropriate for meters displaying settled voltage values, not for capturing high-frequency waveforms. High input impedance helps minimize loading of the measured source, although the front-end still needs suitable input protection and filtering. Because the verified snippets do not publish the complete electrical limits, the engineer should use the manufacturer data sheet to establish input ranges, settling time, accuracy, and bypass-component requirements.
推薦
Temperature Measurement Instruments
The ICL7107CPL+ can form the measurement core of a temperature display when the sensor is conditioned into a voltage compatible with the converter’s input and reference arrangement. The integrated seven-segment decoder and LED driver permit a compact numerical instrument without a separate display controller, while the approximately 3 samples per second update rate is adequate for continuously refreshed temperature readings. Differential input and reference capability can be useful when designing ratiometric or bridge-based temperature detection. The measurement accuracy will depend on the sensor, reference network, input filter, layout, and calibration method rather than on display resolution alone. Thermal drift of the complete signal chain and LED loading should therefore be evaluated carefully, with the manufacturer’s recommended reference and bypass components implemented close to the device.
推薦
Industrial Process Monitoring
The ICL7107CPL+ is appropriate for slow industrial process indicators that display a measurement from sensors, potentiometers, or transducers. According to the Analog Devices product page, its dual-slope conversion technique automatically rejects interference signals common in industrial environments, while the approximately 3 samples per second rate supports a readable panel display. Integrated display-drive circuitry reduces subsystem complexity and component count. For reliable operation, the signal and reference paths should be protected from transients, routed away from display-current returns, and supported by the prescribed bypass network. Engineers must verify the actual input range, reference limits, timing, and allowable temperature from the full data sheet because those numerical limits were not present in the supplied verification snippets.
推薦
Resistance and Bridge Measurement
The ICL7107CPL+ supports resistance and bridge-transducer measurement because the family provides true differential input and reference connections, which are particularly useful for ratiometric sensing. A bridge output can be measured relative to its excitation-derived reference, while the integrated decoder and display driver present the resulting value directly to a seven-segment LED display. The approximately 3 samples per second conversion rate suits slowly changing physical quantities such as temperature, pressure, or load. Actual measurement resolution and accuracy still depend on excitation stability, input protection, reference routing, and calibration. Designers should follow the manufacturer’s recommended layouts and component values and should not infer bridge excitation capability or permissible common-mode voltage from the abbreviated product summaries.
推薦
Educational and Bench Instruments
The ICL7107CPL+ is well matched to educational meters, bench instruments, and legacy laboratory equipment because it provides a complete measurement and display function in one through-hole package. Its 40-pin PDIP format is convenient for prototyping, repair, and manually wired educational panels, while the approximately 3 samples per second update rate produces a clear numerical display for slowly changing inputs. The integrated seven-segment decoder, polarity and digit drivers, voltage reference, and clock reduce the number of discrete functions a student or technician must assemble. For dependable demonstrations, the prototype board should preserve the manufacturer’s component values, provide adequate input protection, and separate display-current paths from sensitive reference routing. Any substitute should be checked against the original 40-pin assignment and LED display-polarity requirements.
推薦
推薦產品摘要
工程參考資料，適用於 ICL7107CPL+ — 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 | ICL7107CPL | ICL7107CJL | TC7107CPL | TC7107IPL | ICL7106CPL+ |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Microchip Technology | Microchip Technology | Analog Devices |
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Pin Count | 40 pins | 40 pins | 40 pins | 40 pins | 40 pins | 40 pins |
主要差異化特點
- Complete integrated display subsystem (對比ICL7106CPL+)
- Direct seven-segment LED implementation (對比TC7107CPL)
- True differential measurement architecture (對比ICL7107CPL)
設計說明
Budget the supply for the converter and all driven LED segments at the minimum operating voltage, maximum display duty cycle, and worst-case digit pattern. LED current can vary significantly between an all-dark display and a display containing several illuminated digits. Place the manufacturer-recommended supply bypass capacitor close to the device and route display-current returns away from sensitive reference and analog-input paths. The verified material identifies a low-power converter but does not provide numerical supply-current limits, so those values must be taken from the official data sheet.
Keep the analog input, reference, and timing-component connections compact and physically separated from the seven-segment display outputs. Dual-slope conversion can reject periodic interference, but it does not remove layout-generated errors such as reference coupling or common-impedance disturbance. Use the manufacturer’s application diagram for component placement and grounding. If the substitute is not the exact ICL7107 die or grade, compare the complete 40-pin table before changing a PCB because an apparently identical PDIP outline does not guarantee identical pin functions.
Do not substitute the ICL7106CPL+ without redesigning the display interface because the verified sources distinguish the ICL7106 as an LCD-driver version and the ICL7107 as an LED display driver. Likewise, do not approve a TC7107 candidate solely from its 40-pin DIP description. Check supply limits, differential input polarity, reference behavior, conversion timing, segment and digit drive polarity, external-component requirements, and display-current capability. Production equivalence should be recorded against the specific manufacturer data sheet and, where appropriate, validated on prototype hardware.
合規資訊
The supplied verified results do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for ICL7107CPL+. The ICL7107 is an industrial and instrumentation A/D converter rather than an automotive-qualified device, so AEC-Q100 is recorded as not applicable.