ICL7106CJL - 3.5-Digit LCD ADC | Analog Devices
N.º da peça: ICL7106CJL ✓ AtivoICL7106CJL Visão geral
An integrated data converter is a mixed-signal semiconductor that converts an analog input voltage into a numeric representation. In the ICL7106, the converter and LCD-driving functions are combined to reduce the number of external components required for a digital panel display. Analog Devices describes the device family as a 3.5-digit A/D converter with direct LCD drivers, allowing the measured result to be displayed without a separate display-driver IC in conventional applications.
The converter's defining application feature is its direct seven-segment LCD drive capability. The measured count is represented as a three-digit display plus sign or other status information, depending on the external circuit configuration. The 40-pin CDIP construction also provides ample connection count for analog inputs, references, oscillator components, display outputs, and control functions described in the manufacturer documentation.
The ICL7106 family uses a dual-slope conversion technique, which is useful when rejecting interference at frequencies related to the integration period. Analog Devices states that dual-slope conversion automatically rejects interference signals common in industrial environments. The same product overview identifies true differential input and reference capability as useful for ratiometric measurements involving ohms, resistive bridges, and bridge transducers.
Typical uses include digital panel meters, laboratory meters, process-control displays, temperature indicators, weighing systems, and other equipment that must measure an analog quantity and present it locally on an LCD. A panel-meter design can place the ICL7106 close to the sensor interface, route the analog input and reference through short paths, and connect the display directly to the converter's LCD outputs.
When laying out an ICL7106CJL circuit, follow the pin-description and typical-application diagrams in the manufacturer datasheet for input filtering, reference routing, oscillator components, and LCD connections. Keep sensitive analog and reference nets away from display outputs and switching nodes. Because the CDIP package is through-hole, its long leads make hand insertion straightforward, but production designs must still account for lead spacing, board cleanliness, and mechanical strain.
This product record combines the manufacturer overview, distributor identification of the 40-CDIP package, lifecycle information, and cross-reference findings for ICL7106CJL. It also distinguishes directly documented characteristics from fields that require confirmation against the datasheet, helping engineers plan replacement sourcing without relying on unverified electrical assumptions.
Alternativas drop-in para ICL7106CJL — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
ICL7106CMJ
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
ICL7106CJL Classificações máximas e características elétricas
| Product Type | 3.5-digit A/D converter with direct LCD drivers |
| Display Resolution | 3.5 digits |
| Conversion Technique | Dual-slope conversion |
| Input Type | True differential input and reference |
| Display Output | Direct LCD drive |
| Encapsulamento | 40-pin ceramic dual-inline package (40-CDIP) |
| Contagem de pinos | 40 pins |
| Tipo de montagem | Through-hole |
| Production Status | Production |
Guia de Configuração de Pinos do ICL7106CJL 40-pin ceramic dual-inline package (40-cdip)
Configuração de pinos para ICL7106CJL (pacote 40-pin ceramic dual-inline package (40-cdip)). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para ICL7106CJL.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ICL7106CJL é adequado para 6 aplicaçãos: Digital Panel Meter, Temperature Measurement Instrument, Resistive and Bridge Measurement, Laboratory Digital Instrument, Process Control Readout, Weighing and Load Display.
Digital Panel Meter
The ICL7106CJL fits a digital panel meter because it combines a 3.5-digit analog-to-digital converter with direct LCD drive in one 40-pin ceramic DIP device. An instrument designer can connect the analog measurement network, reference, timing components, and multiplexed display to the device without introducing a separate conventional LCD-driver IC. The dual-slope conversion technique is particularly useful when slow-moving process readings must coexist with industrial interference. Confirm the input range, reference arrangement, and segment mapping in the manufacturer datasheet, then verify contrast and multiplex timing in the final display mechanism.
Temperature Measurement Instrument
ICL7106CJL can form the central measurement and display function of a temperature indicator using a resistive sensor or conditioned bridge output. Its true differential input and reference capability supports ratiometric measurement techniques in which the displayed value depends on sensor excitation and reference behavior. The 3.5-digit format is appropriate for many panel thermometers that require one degree of display resolution. Select the external excitation, linearization network, protection elements, and display based on the sensor characteristic rather than treating the converter as a complete temperature-measurement subsystem.
Resistive and Bridge Measurement
The ICL7106CJL is applicable to ohmmeter, resistance-measurement, and bridge-transducer designs because Analog Devices identifies true differential input and reference operation as useful for ratiometric measurements. In a bridge system, excitation and sensing relationships can reduce sensitivity to supply or reference variation when the circuit is implemented correctly. The converter's dual-slope method also provides interference rejection for slow industrial measurements. Use the typical application circuit as the basis for source and reference grounding, input filtering, and overvoltage protection, then recalculate values for the selected resistance or bridge sensitivity.
Laboratory Digital Instrument
A laboratory meter can use the ICL7106CJL as a dedicated front panel for voltage, current, or resistance measurements when legacy instrumentation and direct LCD display are priorities. The integrated converter and LCD drive reduce the external display-control burden, while the 3.5-digit readout provides a familiar instrument format. Through-hole 40-CDIP construction is convenient for repair-oriented and prototype instrument designs. Engineer the input switching network carefully to prevent overload paths from injecting transients into the converter, and follow the manufacturer pin and reference schematics to preserve measurement accuracy.
Process Control Readout
ICL7106CJL is suited to process-control equipment that must display a local process value on an operator panel. Its dual-slope conversion method can reject periodic interference found in industrial environments, and the direct LCD drive provides a simple local interface without requiring a graphics controller. The device can monitor a conditioned sensor signal while an external controller or alarm system handles higher-level actions. Validate the input common-mode range, reference stability, display update time, and enclosure temperature range before using it in control cabinets or near motor equipment.
Weighing and Load Display
The ICL7106CJL can support a basic electronic weighing system in which a load-cell bridge produces a low-level differential signal that is converted and shown directly on an LCD. The true differential input and reference capability is useful in bridge-based designs, while the 3.5-digit result format suits compact commercial scales and force indicators. The converter itself is not a complete load-cell front end: amplifier gain, excitation, input filtering, calibration, and temperature compensation remain necessary. Use stable reference and excitation components to prevent measurement drift and follow the differential-input layout recommended in the datasheet.
Dados de referência de engenharia para ICL7106CJL — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ICL7106CMJ |
|---|---|---|
| Brand | Analog Devices | Analog Devices |
| Package | 40-CDIP | 40-CDIP |
| Product Type | 3.5-digit A/D converter with direct LCD drivers | ICL7106-family A/D converter with direct LCD drivers |
| Conversion Technique | Dual-slope conversion | Dual-slope conversion |
| Display Resolution | 3.5 digits | 3.5 digits |
| Input Arrangement | True differential input and reference | True differential input and reference |
| Mounting Type | Through-hole | Through-hole |
Principais diferenciais
- Direct display integration (vs ICL7106CMJ)
- Panel-meter conversion behavior (vs ICL7106CMJ)
- Legacy through-hole integration (vs ICL7106CMJ)
Notas de projeto
Route the true-differential input and reference as a compact, balanced pair, and place associated filtering components close to their IC pins. Keep the LCD segment outputs away from the analog input and reference nets, especially when the display cable or glass is physically distant from the PCB. Use the manufacturer application schematic to preserve the intended grounding relationship between analog input, reference, and display-return connections.
Do not substitute a 40-pin PLCC device for ICL7106CJL solely because both have 40 pins. The JL ordering code identifies a 40-CDIP, and mechanical pin spacing, lead geometry, and board footprint differ from a PLCC package. Verify every numbered pin in the manufacturer data sheet and confirm the temperature or qualification suffix before approving any related ICL7106-family device.
The ICL7106 family's dual-slope architecture is intended to reject interference common in industrial environments, but correct rejection still depends on the timing, reference, and input-network layout. Minimize loop area around the analog input, use a stable low-noise reference, and avoid routing measurement wiring beside display outputs, relays, or switching power nodes. Validate interference immunity in the final instrument enclosure and cable configuration.
The integrated LCD driver does not remove the need for a valid display circuit. Confirm segment assignments, common-line drive, bias voltage, and contrast from the manufacturer diagrams, and ensure the display is compatible with the multiplexing scheme. Do not infer LCD voltage or timing from the ICL7106 product summary; use the electrical-characteristics and typical-application sections before connecting the glass.
Informações de conformidade
The extracted manufacturer and distributor information does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable because the product is not identified as an automotive-qualified device.
