ICL7137CPL+ - Low-Power 3.5-Digit A/D Converter | Analog Devices
Артикул: ICL7137CPL+ ✗ Снят с производстваICL7137CPL+ Обзор
The ICL7137CPL+ belongs to the broader analog-to-digital converter and display-driver hierarchy. A 3.5-digit A/D converter produces a numeric measurement for meters, laboratory instruments, panel displays, and portable equipment. The ICL7137 combines the converter, control logic, reference-related circuitry, and active LED display-drive outputs in one device, reducing the need for separate display-driver circuitry. Its 40-pin PDIP package is intended for through-hole PCB assembly rather than compact surface-mount designs.
Key verified characteristics include a 3.5-digit measurement format, direct LED display support, low-power operation, and a supply current below 200 microamps excluding LED display current. The converter uses a dual-slope conversion technique, which is suited to applications where repeatable measurement results and resistance to some noise sources are more important than very high conversion throughput. The product is identified by the ICL7137 family, while the CPL+ ordering code identifies the 40-pin PDIP package configuration.
Typical applications include digital panel meters, laboratory measurement equipment, weighing systems, temperature-measurement instruments, battery-powered meters, and industrial process displays. Because the device directly drives an LED display, the power budget depends on both the converter's low supply current and the current drawn by the selected LED digits and segments. Display visibility, digit count, update behavior, and the required input measurement range should therefore be verified against the manufacturer datasheet before final schematic approval.
For PCB layout, place the ICL7137CPL+ in a through-hole footprint matching the 40-pin PDIP package and observe the manufacturer's input, reference, clock, and display-output guidance. Keep sensitive analog input and reference nodes away from display return-current paths where possible. Because the verified data does not publish a complete pin-by-pin mapping, the pinout should be confirmed from the official datasheet before assembly. This page combines verified manufacturer and distributor information, package details, replacement guidance, and practical selection context rather than inferring unconfirmed electrical values.
Аналоги без доработки для ICL7137CPL+ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
ICL7137CPL+3
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
TC7107ARCPL
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
TC7106CLW
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ICL7106CPLZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ICL7107CPLZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ICL7137CPL+ Максимальные параметры и электрические характеристики
| Product Type | 3.5-digit analog-to-digital converter with LED display driver |
| Manufacturer | Analog Devices / Maxim Integrated |
| Conversion Technique | Dual-slope |
| Display Interface | Direct LED display drive |
| Ток потребления | Under 200 uA, excluding LED display current |
| Measurement Resolution | 3.5 digits |
| Корпус | 40-pin PDIP |
| Package Type | PDIP |
| Тип монтажа | Through-hole |
| Differential Input | Differential, single, and 0 V referenced use is indicated by the verified listing |
| LED Display Segments | 7-segment, as indicated by the comparison data |
| Carrier Type | Tube |
Руководство по цоколевке ICL7137CPL+ в корпусе pdip
Цоколевка для ICL7137CPL+ (корпус pdip). Этот аналоговый компонент имеет выводы входа, выхода и питания. Обратитесь к техническому описанию производителя для конфигураций выводов балансировки нуля, коррекции и разрешения. Идеально подходит для схем обработки сигналов и усилителей.
Нет подробных данных о распиновке для ICL7137CPL+.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
ICL7137CPL+ подходит для 6 применениеs: Digital Panel Meters, Battery-Powered Measurement Instruments, Laboratory Digital Readouts, Temperature Measurement Displays, Weighing Scale Readouts, Industrial Process Readouts.
Digital Panel Meters
The ICL7137CPL+ fits digital panel meters because it combines a 3.5-digit dual-slope analog-to-digital converter with active LED display-drive outputs in one 40-pin PDIP device. Its supply current is under 200 microamps when LED display current is excluded, allowing a low-power converter section in portable or continuously energized meters. The converter directly drives the display, simplifying the architecture compared with a separate ADC and LED-driver arrangement. Engineers should select segment resistors for the intended brightness, verify the input range against the reference configuration, and confirm that the measured signal and ground arrangement match the manufacturer’s dual-slope application circuit.
Рекомендуется
Battery-Powered Measurement Instruments
The ICL7137CPL+ is appropriate for battery-powered measurement instruments because the Analog Devices product page specifies converter supply current below 200 microamps excluding LED display current. The 3.5-digit format is suitable for compact numerical readouts where a full high-resolution ADC is unnecessary, while dual-slope conversion provides a practical measurement architecture. Battery life will depend strongly on how many LED digits remain illuminated and on the conversion cadence, so the display duty cycle is an important system-level design choice. Input excitation, reference stability, and the sensor interface should also be evaluated in terms of the total energy consumed between battery replacements.
Рекомендуется
Laboratory Digital Readouts
The ICL7137CPL+ can serve as the central measurement and display device in laboratory readouts that require a straightforward 3.5-digit numeric display. Its integrated LED driver allows the converter result to be presented without a separate dedicated display-driver IC, while the low converter supply current supports controlled-power instrument designs. The device is most useful when the required resolution and conversion behavior match the dual-slope architecture. Before implementation, verify reference voltage, input impedance, integration period, and input-polarity requirements from the official datasheet, because these details determine whether the converter can be connected directly to the selected sensor and signal-conditioning network.
Рекомендуется
Temperature Measurement Displays
The ICL7137CPL+ is applicable to temperature measurement displays that translate a conditioned analog voltage into a direct LED readout. A 3.5-digit result can present a useful temperature span, and the converter's direct LED-drive capability keeps the display path compact. The sensor signal must first be scaled and conditioned into the converter's supported input range, with attention to cold-junction compensation, source impedance, and reference accuracy where they affect calibration. Because the supplied verified data does not state the input range or reference voltage, those values must be taken from the manufacturer datasheet before selecting resistor values or amplifier gain.
Рекомендуется
Weighing Scale Readouts
The ICL7137CPL+ can support a compact weighing-scale readout when the load-cell signal is conditioned into a suitable analog input and the result requires three digits plus a fractional digit. Its integrated LED display drive provides a direct path from the dual-slope conversion result to the visible numeric output, reducing component count in through-hole instrument designs. Practical implementation depends on excitation stability, input filtering, calibration, and display resolution. The verified data does not provide the converter's input range or reference details, so a scale designer must confirm those parameters and the complete pinout before deciding whether this part satisfies the required resolution and calibration stability.
Рекомендуется
Industrial Process Readouts
The ICL7137CPL+ is suitable for simple industrial process readouts that display a 3.5-digit value derived from a 4-20 mA, voltage, or conditioned sensor signal. Its direct LED display driver and low converter supply current reduce the number of discrete components in dedicated panel instruments. The dual-slope conversion method is appropriate for slowly changing process variables rather than high-speed waveform acquisition. Because the verified excerpts do not provide input-voltage limits, common-mode range, isolation performance, or environmental ratings, industrial qualification must be confirmed separately. A robust product design should also include input protection, surge handling, calibration access, and a display-brightness strategy.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ICL7137CPL+ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ICL7137CPL+3 | TC7107ARCPL | TC7106CLW | ICL7106CPLZ | ICL7107CPLZ |
|---|---|---|---|---|---|---|
| Package | 40-PDIP | 40-PDIP | 40-PDIP | 40-PDIP | 40-PDIP | 40-PDIP |
| Brand | Analog Devices / Maxim Integrated | Maxim Integrated | Texas Instruments | Texas Instruments | Maxim Integrated | Maxim Integrated |
| Resolution | 3.5 digits | 3.5 digits | 3.5 digits | 3.5 digits | 3.5 digits | 3.5 digits |
Ключевые отличия
- Direct LED display integration (против ICL7107CPLZ)
- Low converter supply current for portable instruments (против TC7107ARCPL)
- Integrated LED output reduces display-driver overhead (против TC7106CLW)
- Same-family ordering alternative available for design review (против ICL7137CPL+3)
Заметки по проектированию
Use the manufacturer 40-pin PDIP footprint and confirm every pin number against the official datasheet before routing. The supplied verified excerpts identify the 40-pin PDIP package but do not provide a complete pin-name table. Pay particular attention to analog input connections, reference components, clock elements, control inputs, and LED outputs. Because the ICL7137CPL+ directly drives an LED display, keep display-current returns from sharing sensitive analog return paths where the application circuit permits.
Budget the converter supply separately from LED load current. The verified converter supply current is under 200 microamps when LED display current is excluded, but the installed instrument can consume substantially more when digits and segments are illuminated. Select segment resistors for the required brightness, consider blanking or duty-cycle reduction for battery-powered products, and verify the exact supply-voltage limit from the manufacturer datasheet rather than inferring it from the low-current statement.
Treat the analog input, reference network, and dual-slope timing components as the precision-sensitive portion of the circuit. Use short, quiet routing from the input-conditioning network, maintain stable reference connections, and avoid routing display-output or clock-current paths immediately beneath sensitive analog inputs. The verified data does not state input impedance, reference voltage, or integration timing, so component values and stability requirements must be selected from the manufacturer application information.
Do not treat a shared 40-pin PDIP outline as proof that ICL7137CPL+, ICL7106CPLZ, ICL7107CPLZ, TC7107ARCPL, or TC7106CLW are automatically interchangeable. The supplied comparison snippets identify both LED-drive and LCD-drive variants and do not establish complete pin compatibility. Before replacement, compare every numbered pin, supply voltage, reference, clock, input range, conversion timing, display-output drive strength, and absolute maximum ratings against the relevant official datasheets.
Информация о соответствии
The verified excerpts do not provide extractable RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations for this exact ordering code. AEC-Q100 is not applicable because the verified product is an analog-to-digital converter rather than an automotive-qualified power device.