ICL7116CMH - 3.5-Digit ADC with Display Hold | Analog Devices
MPN： ICL7116CMH ✓ 啟用中ICL7116CMH 概覽
An ADC is an interface IC that converts an analog voltage into a digital numerical representation. The ICL7116 belongs to the family of low-power BCD and seven-segment display converters, combining an analog-to-digital conversion stage with seven-segment decoders, display drivers, an internal reference, and a clock. This integration reduces the component count and simplifies the design of digital voltmeters, temperature meters, process monitors, laboratory instruments, and compact industrial measurement panels.
The ICL7116 family provides a hold pin that can freeze or retain the current reading. This feature is useful when an operator must inspect a value that changes continuously, when a measurement must remain stable while another control action occurs, or when the displayed result needs to be copied before the input changes again. Unlike a generic numeric ADC, the device is optimized to drive multiplexed seven-segment displays directly.
The converter uses a 3.5-digit measurement format, allowing a display range that includes a sign position and full-scale digit. Its integrated reference, clock, decoders, and drivers place the signal chain and display interface in one package. The manufacturer describes the ICL7116 as a 3.5-digit ADC with display hold, distinguishing it from related converters through the added hold capability.
Typical applications include digital panel meters, laboratory readouts, temperature-monitoring instruments, process-control displays, bench power meters, and compact consumer or industrial measurement equipment. In each case, the analog sensor output is conditioned into the converter input range, converted to a digital value, and presented on one or more seven-segment displays.
Design considerations center on input signal conditioning, reference stability, display drive requirements, and correct handling of the hold input. The analog input must remain within the device's specified operating limits, while component tolerances around the measurement path can affect displayed accuracy. The manufacturer datasheet should be used to confirm the exact package pinout, pin functions, supply limits, timing, and recommended application circuit before PCB release.
This product page combines the confirmed ICL7116 family features with practical selection guidance, complete pinout caveats, sourcing paths, and a qualification-focused comparison framework. It is intended to help engineers determine whether the ICL7116's integrated display architecture and hold function fit a measurement instrument before committing the board layout.
直接替換替代品，適用於 ICL7116CMH — 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。
此產品無可直接替換的替代品。
申請替代品ICL7116CMH 最大額定值與電氣特性
| ADC Resolution | 3.5 digits |
| Converter Architecture | Monolithic 3.5-digit analog-to-digital converter |
| Hold Function | Yes |
| Integrated Seven-Segment Decoders | Yes |
| Integrated Display Drivers | Yes |
| Integrated Reference | Yes |
| Integrated Clock | Yes |
| Production Status | Production |
| Input Signal Type | Analog voltage |
ICL7116CMH standard 腳位配置指南
ICL7116CMH（standard 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： ICL7116CMH.
請參閱 資料表 以查看完整腳位配置。
典型應用
ICL7116CMH 適用於 6 應用s: Digital Temperature Display, Laboratory Digital Voltmeter, Industrial Process Monitor, Bench Power Supply Readout, Test and Measurement Readout, Compact Sensor Display Module.
Digital Temperature Display
The ICL7116CMH suits a digital temperature panel in which a conditioned sensor voltage must be displayed directly on seven-segment digits. Its integrated 3.5-digit converter, seven-segment decoder, display drivers, reference, and clock reduce the number of separate components needed for a readable instrument. The hold function can freeze the current value for inspection or operator acknowledgement. Design the front end so the sensor signal stays within the converter input limits, and check input accuracy, temperature drift, and display loading against the electrical tables before finalizing the circuit.
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Laboratory Digital Voltmeter
The ICL7116CMH can form the measurement and display core of a compact laboratory voltmeter because it combines conversion with seven-segment display support. The 3.5-digit format is appropriate for straightforward panel-meter readings, while the hold function allows the displayed measurement to remain fixed during operator tasks. The instrument designer must define the input attenuator and protection network, establish the reference accuracy, and verify the exact CMH pin assignments. Input switching, calibration, and lead compensation should be implemented around the converter according to the manufacturer application guidance.
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Industrial Process Monitor
The ICL7116CMH is appropriate for an industrial process-monitoring panel that presents a measured process variable locally without a separate display driver IC. Integrating the converter, decoder, clock, and reference into one device simplifies the display subsystem and can reduce board area. The hold input is useful when a value must remain readable during an adjustment or acknowledgment step. For a production design, confirm operating-temperature requirements, input protection, display segment count, update behavior, and the electrical limits for the CMH ordering code before releasing the enclosure and PCB design.
推薦
Bench Power Supply Readout
The ICL7116CMH can display the output voltage of a compact bench power supply using the converter's integrated seven-segment decoding and display drive. This architecture avoids requiring a separate numeric ADC and display interface when only a direct local readout is needed. The hold function can retain a selected value while the output is adjusted, which improves usability in a bench instrument. The designer should size the front-end divider for the supply range, account for display-segment loading, and confirm that the chosen display arrangement and supply voltage satisfy the converter's operating conditions.
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Test and Measurement Readout
The ICL7116CMH fits legacy-style test equipment where a numerical result must appear immediately on a seven-segment display and hold the last reading. The integrated reference and clock reduce external support circuitry, while the display drivers reduce the need for separate logic. A useful implementation accepts a conditioned analog test signal, drives one or more digits, and exposes the hold input to the operator. Engineers should validate input bandwidth, conversion timing, reference stability, and display multiplexing against the datasheet, and verify package-specific pinout details before layout.
推薦
Compact Sensor Display Module
The ICL7116CMH can serve as the central converter and display interface in a compact sensor-display module for pressure, level, or resistance measurements. Its 3.5-digit format suits basic commercial instrumentation, and the integrated display functions simplify the module's component count. The hold feature permits a stable reading while a technician inspects the physical sensor or adjusts the process. The complete measurement chain must include suitable excitation or biasing, input conditioning, and protection. Confirm the signal range and polarity, select the display current appropriately, and check the CMH package drawing for PCB compatibility.
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工程參考資料，適用於 ICL7116CMH — 比較、設計指引及合規資訊。
選型指南
設計說明
Confirm the exact CMH package outline, pin count, and counter-clockwise pin numbering against the Analog Devices ICL7116 data sheet before placing footprints. Route the analog input and reference connections away from display-drive outputs and keep input components close to their associated pins. Follow the manufacturer application diagram for input, reference, and bypass-capacitor placement rather than substituting a generic ADC layout.
Treat the analog input as a precision measurement node: use short traces, minimize loop area, and maintain separation from switching or display-driver paths. Determine the required input filtering from the converter bandwidth and conversion characteristics rather than adding excessive capacitance that could delay settling. Check source impedance, grounding, and reference stability against the electrical specifications for the operating measurement range.
Do not treat the hold function as a general enable or shutdown control. Verify its polarity and timing in the ICL7116 data sheet, and ensure firmware or manual controls cannot accidentally freeze an unintended value. Also validate segment-drive current and multiplex timing for the chosen display because the converter's display architecture, indicator layout, and number of digits must be treated as one system.
Place display drivers and their associated components away from the reference and analog input section to reduce coupling into precision measurements. Keep the ground-return strategy consistent between the converter, reference components, input conditioning, and display return paths. A solid, low-impedance ground plane is preferable to long point-to-point ground wiring, while still observing the package pin arrangement specified for the CMH variant.
合規資訊
No compliance declarations are stated for the ICL7116CMH ordering code. The device is a general-purpose integrated circuit and is not identified as an AEC-Q100 automotive-qualified part.