MAX114CAG+ 8-Bit 1MSPS 4-Channel ADC | Analog Devices
부품 번호: MAX114CAG+ ✓ 활성MAX114CAG+ 개요
The MAX114 family belongs to the flash ADC category within the broader analog-to-digital converter hierarchy. Flash ADCs use an internal parallel array of comparators and decoding logic to convert an analog input into a digital code. Compared with successive-approximation ADCs, the MAX114 architecture provides a stated 660ns conversion time, equivalent to approximately 1MSPS, while retaining an 8-bit resolution suitable for control, monitoring, and legacy parallel-interface systems.
Key features of the MAX114CAG+ include four analog input channels, 8-bit resolution, a 1MSPS conversion rate, a microprocessor-compatible parallel output, and an active-low power-down function. The verified manufacturer data states that power-down current consumption is typically 1uA, and that the device returns to normal operating mode in less than 200ns. These characteristics make the converter useful in systems that need rapid sampling but do not require high-resolution or serial-interface conversion.
The half-flash architecture is central to the MAX114CAG+ performance. The converter uses parallel internal comparison stages to acquire the input voltage and then resolves the final 8-bit code. This approach is appropriate for applications requiring deterministic acquisition timing and direct connection to a microprocessor data bus. The device is intended for single +5V operation, which simplifies the interface to older 8-bit control systems that already operate from a 5V rail.
Typical applications include industrial control and instrumentation, process monitoring, sampled sensor interfaces, embedded measurement systems, and legacy data-acquisition equipment. The four-channel arrangement supports multiple analog inputs without requiring four separate converter packages, while the 1MSPS rate is suitable for control loops and waveform sampling where 8-bit resolution is adequate.
Designers should account for the parallel interface and its timing when laying out the PCB. Input, ground, supply, and data-bus traces should be arranged to minimize digital switching noise at the analog inputs. The power-down pin should not be left floating, and the supply bypass strategy should follow the manufacturer datasheet recommendations for reliable operation of this older parallel-interface ADC.
This page consolidates the verified MAX114CAG+ specifications, sourcing links, and design considerations with the manufacturer product information. It also distinguishes confirmed parameters from values that require review in the manufacturer datasheet, helping engineers evaluate this 8-bit ADC without confusing it with higher-resolution or serial-interface converters.
드롭인 대체품: MAX114CAG+ — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
MAX114EAG+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX114CAG+ 최대 정격 & 전기적 특성
| Converter Type | 8-bit flash analog-to-digital converter |
| 분해능 | 8 bit |
| Number of Analog Inputs | 4 channels |
| Conversion Time | 660 ns |
| 샘플링 속도 | 1 MSPS |
| 공급 전압 | +5 V |
| Supply Type | Single supply |
| Architecture | Half-flash |
| 인터페이스 | Microprocessor-compatible parallel interface |
| Power-Down Current | Typically 1 uA |
| Power-Down Recovery Time | Less than 200 ns |
| 패키지 | 24-pin SSOP |
| 실장 유형 | Surface mount |
| Application | Data acquisition and microprocessor interface |
| RoHS 상태 | Compliant |
| Document Publication Date | 1996-09-13 |
MAX114CAG+ 24-pin ssop 핀 구성 가이드
MAX114CAG+(24-pin ssop 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: MAX114CAG+.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
MAX114CAG+ 적합 용도: 6 애플리케이션s: Industrial Process Monitoring, Legacy Parallel Data Acquisition, Automatic Control Systems, Sampled Sensor Interface, Educational Electronics Bench, Power-Down Data Logger.
Industrial Process Monitoring
The MAX114CAG+ fits legacy process-monitoring systems that need to scan several analog sensor outputs through a microprocessor-compatible data bus. Its four 8-bit input channels reduce the number of separate converters required, while the 1MSPS rate allows successive measurements to be completed rapidly. The single +5V architecture is convenient for controllers and interface boards already powered from 5V. Designers should use the manufacturer data sheet to confirm the input range, accuracy, and acquisition timing, and should place suitable bypass and input-conditioning networks close to the device.
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Legacy Parallel Data Acquisition
The MAX114CAG+ is appropriate for parallel data-acquisition equipment designed around an 8-bit microprocessor bus. It converts a selected analog input in a stated 660ns, equivalent to 1MSPS, and presents the result through its microprocessor-compatible parallel interface. This avoids the serial adapter and digital filtering often required by modern mixed-signal converters. The principal engineering task is bus timing: the host must capture the result before the next conversion sequence overwrites the output, using the timing information in the complete manufacturer documentation.
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Automatic Control Systems
The MAX114CAG+ can serve as the measurement front end of an 8-bit feedback control system where 1MSPS conversion speed is adequate. Four channels allow position, pressure, or level signals to be sampled sequentially, while the flash architecture provides deterministic conversion timing. The 8-bit resolution should be checked against the required control loop resolution and noise margin before adoption. Because the exact input range and transfer characteristics are not present in the supplied excerpts, control engineers should verify them directly in the manufacturer data sheet and include suitable scaling and protection.
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Sampled Sensor Interface
The MAX114CAG+ is well suited to legacy sampled-sensor systems requiring up to four analog measurements rather than a high-resolution sigma-delta conversion. Its 1MSPS operation provides temporal resolution for rapidly changing sensor outputs, while the 8-bit code simplifies interfacing to an 8-bit processor. Input conditioning remains essential because aliasing, sensor noise, and reference accuracy directly affect the useful measurement. The active-low power-down control can reduce consumption during idle periods, with typical shutdown current of 1uA and recovery in less than 200ns according to the manufacturer product page.
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Educational Electronics Bench
The MAX114CAG+ is useful in educational instrumentation because it exposes the complete parallel conversion process to students and prototyping systems. A microcontroller can control channel selection, start a conversion, read the digital result, and display the measured value without relying on a complex serial protocol. Its 24-pin SSOP package and single +5V supply simplify construction around older 5V laboratory hardware. Designers should provide regulated supply decoupling, a defined logic enable state, and careful common-ground routing so that breadboard noise does not obscure the converter's 8-bit output.
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Power-Down Data Logger
The MAX114CAG+ supports low-duty-cycle measurement systems because its active-low power-down function typically reduces supply current to 1uA and returns to normal operation in less than 200ns. A logger can power the converter only during scheduled sampling intervals, then switch it off while the host stores or transmits the 8-bit result. This behavior can reduce average system energy use, although total consumption also depends on the host and interface circuitry. The power-down signal must be actively controlled, and the system should test startup timing before assuming that measurements can begin immediately after wake-up.
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추천 제품 요약
엔지니어링 참조 데이터: MAX114CAG+ — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MAX114EAG+ |
|---|---|---|
| Brand | Analog Devices | Analog Devices |
| Package | 24-pin SSOP | 24-pin SSOP |
| Resolution | 8 bit | 8 bit |
| Number of Channels | 4 channels | 4 channels |
| Sampling Rate | 1 MSPS | 1 MSPS |
| Conversion Time | 660 ns | 660 ns |
| Supply Voltage | +5 V | +5 V |
| Power-Down Current | Typically 1 uA | Typically 1 uA |
| Interface | Microprocessor-compatible parallel interface | Microprocessor-compatible parallel interface |
주요 차별점
- Four-channel integration in an 8-bit converter (vs MAX114EAG+)
- 1MSPS half-flash conversion (vs MAX114EAG+)
- Fast active-low power-down recovery (vs MAX114EAG+)
설계 노트
Route the parallel data bus away from the analog input and reference traces, and place the device so switching outputs do not run directly beneath sensitive input pins. Use a common, low-impedance ground plane and terminate or properly buffer digital signals where bus loading could affect acquisition timing. Because the supplied material does not contain the complete pin table or layout example, follow the pin arrangement and recommended layout in the official MAX114 data sheet.
Provide a stable single +5V supply and place the manufacturer's recommended bypass capacitors close to the supply and ground pins. Keep the power-down input in a defined state rather than allowing it to float, especially in systems that expect low idle consumption. The verified data identifies typical 1uA power-down current and less-than-200ns recovery, but the complete supply-current limits and capacitor recommendations must be taken from the manufacturer data sheet.
Do not treat the related MAX114CAG+T listing as proof that every electrical characteristic of the MAX114CAG+ suffix is interchangeable; ordering suffixes can encode packaging, temperature, or qualification information. Likewise, the MAX114EAG+ is the closest documented family alternative, but the supplied excerpts do not provide a full pin-by-pin and timing comparison. Verify the ordering code, pinout, temperature grade, acquisition sequence, and output timing before approving either part as a drop-in substitute.
The 8-bit parallel output creates multiple simultaneous switching edges that can couple into nearby analog circuitry. Keep the converter close enough to the receiving logic that the data-bus traces remain short, avoid sharing wide bus segments with analog inputs, and use a stable analog ground reference. Confirm the output timing, setup time, and hold time from the data sheet before selecting the host read strobe; the 660ns conversion time alone does not define the complete read cycle.
규정 준수 정보
RoHS-compliant status is indicated by the verified Mouser product listing. No verified REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification information was provided. The MAX114 product page identifies the family as production, but the exact suffix qualification details should be confirmed on the manufacturer product page.