MAX1113CPE+ - 8-Bit 8-Ch SAR ADC, 5V Low-Power, Serial | Maxim Integrated
부품 번호: MAX1113CPE+ ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $11.45 | $11.45 |
| 10 | $10.18 | $101.80 |
| 100 | $8.62 | $862.00 |
| 500 | $7.39 | $3,695.00 |
| 1,000 | $6.48 | $6,480.00 |
MAX1113CPE+ 개요
A successive-approximation register (SAR) ADC is a precision data-converter architecture that uses a binary-search algorithm against an internal DAC to digitize an analog input in N conversion cycles for an N-bit result. SAR ADCs are valued for their deterministic latency, lack of pipeline delay, low power consumption at modest sample rates, and excellent DC accuracy. The MAX1113CPE+ belongs to the data-converter IC family, itself a sub-category of mixed-signal and precision analog ICs in the broader signal-chain taxonomy (sensor -> signal conditioning -> ADC -> digital processing).
Key differentiating features of the MAX1113CPE+ include: (1) integrated 2.5V bandgap reference and internal clock, eliminating external components and BOM cost; (2) four analog input modes (8 single-ended / 4 true-differential for MAX1112, 4 single-ended / 2 differential for MAX1113) selectable via software; (3) low supply current of approximately 1 mA at 1 ksps and a hardware-/software-controlled shutdown mode that drops supply current to under 10 µA; (4) SPI-/QSPI-/MICROWIRE-compatible serial interface for direct connection to most microcontrollers and DSPs without glue logic.
The device is fabricated on a CMOS process, giving it high digital noise immunity and very low standby power. The internal track/hold bandwidth exceeds the 1 ksps Nyquist requirement by a wide margin, allowing accurate acquisition of fast-changing multiplexer outputs without external buffering in most applications.
Typical applications include portable and battery-powered data-acquisition systems, multi-channel sensor monitoring (thermistors, strain gauges, transducers), industrial process control front-ends, automotive sensor interface modules, and remote or hand-held instrumentation. Designers favor the MAX1113CPE+ when 8-bit resolution is sufficient, multiple channels are needed, and PCB area or power budget precludes discrete converter designs.
When designing with the MAX1113CPE+, place a 0.1 µF decoupling capacitor as close as possible to the VDD pin and keep analog input traces short and guarded. The internal reference is ratiometric to VDD for the MAX1112 (no external reference required); the MAX1113 uses an internal 2.5 V reference. Use the SHDN pin for duty-cycled operation in battery-powered designs.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and application guidance not consolidated in the manufacturer datasheet, accelerating component selection for precision multi-channel data-acquisition designs.
드롭인 대체품: MAX1113CPE+ — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MAX1113EPE+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1112CPE+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1113MJP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1113C/D
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1113EEE+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1113EWE+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1113CPE+ 최대 정격 & 전기적 특성
| 분해능 | 8 bit |
| Architecture | SAR (Successive Approximation Register) |
| Number of Input Channels | 4 single-ended / 2 differential (MAX1113); 8 single-ended / 4 differential (MAX1112) |
| Conversion Rate | 1 ksps (max) |
| Supply Voltage (VDD) | 4.5 V to 5.5 V (MAX1113) |
| Supply Current (Active) | approximately 1 mA at 1 ksps |
| Internal Reference | 2.5 V (MAX1113) |
| Analog Input Range | 0 V to VREF (single-ended) |
| Serial Interface | SPI / QSPI / MICROWIRE compatible |
| Internal Track/Hold | Yes (integrated) |
| Internal Clock | Yes (integrated) |
| 패키지 | 16-pin PDIP (CPE suffix) |
| 실장 유형 | Through-Hole |
| 동작 온도 범위 | 0C to +70C (C grade; E/M grade available) |
| Process Technology | CMOS |
| RoHS 상태 | Compliant (Pb-free + suffix) |
MAX1113CPE+ 핀 구성
| 핀 1 | AIN1 — Analog Input 1 (single-ended) / positive differential input 1 |
| 핀 2 | AIN2 — Analog Input 2 (single-ended) / negative differential input 1 |
| 핀 3 | AIN3 — Analog Input 3 (single-ended) / positive differential input 2 |
| 핀 4 | AIN4 — Analog Input 4 (single-ended) / negative differential input 2 |
| 핀 5 | GND — Ground reference |
| 핀 6 | REF — Reference voltage (internal 2.5V bypass / external override) |
| 핀 7 | VDD — +5V supply voltage |
| 핀 8 | SCLK — Serial clock input (SPI) |
| 핀 9 | CS — Chip select (active low) |
| 핀 10 | DOUT — Serial data output (ADC result) |
| 핀 11 | SHDN — Shutdown (active low, pulls VDD < 10 uA) |
| 핀 12 | NC — Not connected (per datasheet) |
| 핀 13 | NC — Not connected (per datasheet) |
| 핀 14 | NC — Not connected (per datasheet) |
| 핀 15 | NC — Not connected (per datasheet) |
| 핀 16 | NC — Not connected (per datasheet) |
일반적인 애플리케이션
MAX1113CPE+ 적합 용도: 7 애플리케이션s: Portable Battery-Powered Data Acquisition, Industrial Process Control Sensor Front-End, Automotive Multi-Sensor Interface Module, Hand-Held Test and Measurement Instrument, Remote Sensor Monitoring Node, Medical Patient Monitoring Sensor Interface, Networking Equipment Environmental Sensing.
Portable Battery-Powered Data Acquisition
The MAX1113CPE+ is well-suited for portable, multi-channel data-acquisition modules where low power consumption and minimum external parts are paramount. Its integrated 2.5V reference, integrated clock, and integrated track/hold eliminate the need for an external reference IC such as the AD780 or REF02C, reducing total BOM cost and PCB area by roughly 30 percent compared to discrete ADC designs. The hardware SHDN pin pulls supply current below 10 µA between samples, enabling duty-cycled operation that extends battery life by 10-100x in typical 1-10 Hz sensor monitoring scenarios. With 1 ksps throughput and 4 single-ended input channels, the MAX1113CPE+ easily handles four thermistor, strain-gauge, or transducer channels in a hand-held instrument running on 2-3 AA cells. Its SPI/QSPI/MICROWIRE serial interface connects directly to Microchip PIC, MSP430, or STM32 microcontrollers without glue logic, simplifying firmware. Designers should pair the part with a 0.1 µF decoupling capacitor and a 10 µF bulk cap on VDD, and use ratiometric sensor bridge configurations to leverage the internal reference.
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Industrial Process Control Sensor Front-End
In industrial process-control front-ends, the MAX1113CPE+ provides reliable digitization of temperature, level, and flow sensor outputs at 8-bit resolution. The SAR architecture guarantees deterministic conversion latency, eliminating the pipeline-delay uncertainty of pipelined ADCs — a critical feature for closed-loop control loops where converter latency directly affects loop stability. The 4 single-ended or 2 differential input channels accommodate standard industrial 4-20 mA loops (after current-to-voltage conversion) and 0-10 V process signals via input dividers. The integrated track/hold handles fast-changing signals without external buffering in most applications. Designers favor the MAX1113CPE+ in PLC analog-input modules, distributed I/O nodes, and SCADA front-ends where 8-bit resolution is sufficient for setpoint monitoring (rather than precision control). For -40C to +85C industrial environments, the MAX1113EPE+ variant is a drop-in upgrade without PCB changes.
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Automotive Multi-Sensor Interface Module
The MAX1113CPE+ fits automotive multi-sensor interface modules where 8-bit resolution is sufficient for switch-position monitoring, fluid-level sensing, and cabin-temperature reporting. Its SPI-compatible serial interface integrates directly with NXP S32K, Infineon Aurix, or Renesas RH850 automotive microcontrollers over 5V-tolerant SPI buses. With four analog inputs, the part reads multiple resistive sensors (throttle position, MAP, fuel level) or thermistor networks simultaneously. Although the commercial-temperature MAX1113CPE+ (0C to +70C) is not AEC-Q100 qualified, automotive designs use the industrial-grade MAX1113EPE+ (-40C to +85C) variant in the same 16-pin PDIP for underhood or chassis nodes not subject to -40C cold-crank requirements. For AEC-Q100-qualified designs, designers migrate to AEC-Q100-qualified Maxim/ADI parts in the same SAR ADC family. The integrated reference and clock minimize PCB area in space-constrained sensor-cluster ECUs.
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Hand-Held Test and Measurement Instrument
Hand-held multimeters, insulation testers, and field-service instruments benefit from the MAX1113CPE+ integrated architecture. The part's 1 mA active supply current and shutdown mode below 10 µA directly extend battery life — a critical feature for field-portable instruments where users expect 100+ hours of operation on standard AA cells. The 8-bit resolution is sufficient for go/no-go testing, bargraph displays, and percent-of-range indications common in field instruments. The 4-channel input allows simultaneous monitoring of voltage, current, temperature, and a fourth diagnostic channel. The integrated track/hold and clock eliminate external components, allowing the ADC plus decoupling caps to fit in less than 1 cm² of PCB area — a strong fit for compact hand-held form factors. The SPI interface works with low-cost 8-bit microcontrollers such as the Microchip PIC16F or ATmega328, keeping total BOM cost low for consumer-grade test equipment.
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Remote Sensor Monitoring Node
Remote sensor monitoring nodes — environmental stations, agricultural soil-moisture sensors, building automation points — benefit from the MAX1113CPE+ low-power shutdown and serial interface. Drawing less than 10 µA in shutdown mode, the part supports duty-cycled sampling once per minute to once per hour, achieving years of battery life from a single lithium cell or two AA cells. The integrated reference simplifies calibration: designers use the 2.5V internal reference for absolute measurements or switch to ratiometric mode for bridge-type sensors where reference accuracy cancels. The 4 single-ended inputs cover typical sensor stacks: temperature, humidity (via a resistive polymer sensor), light level (via a photodiode+amplifier), and a fourth general-purpose channel. The SPI interface streams converted data to a low-power wireless MCU such as the STM32WL, CC1310, or MAX32660 for LoRa, Sub-GHz, or Bluetooth transmission.
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Medical Patient Monitoring Sensor Interface
In medical patient monitoring peripheral equipment — bedside nurse-station panels, ambulatory monitoring belts, infusion pump sensors — the MAX1113CPE+ provides dependable 8-bit digitization of multiple physiological signals. The integrated track/hold preserves pulse-shape fidelity for heart-rate, respiration, and SpO2 photoplethysmography (PPG) sensor interfaces, while the 1 ksps rate is sufficient for heart-rate waveforms (typical bandwidth 0.5-40 Hz). The SAR architecture avoids pipeline delay, allowing real-time monitoring loops without aliasing artifacts. The integrated reference and clock reduce component count for reliability-critical designs where minimum part count improves MTBF. The SPI interface connects to ARM Cortex-M based medical MCUs. The MAX1113EPE+ industrial-grade variant (-40C to +85C) is selected for medical devices with wide environmental exposure. Note that this part is not medical-grade/AEC-Q100 qualified; designs targeting FDA submission add appropriate isolation, calibration, and fault-detection circuitry.
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Networking Equipment Environmental Sensing
Networking routers, switches, base stations, and PoE injectors embed the MAX1113CPE+ for internal environmental monitoring: intake-air temperature, exhaust temperature, fan tachometer (via frequency-to-voltage), and humidity. The 4-channel input suffices for typical chassis-monitoring requirements. The integrated reference and clock reduce PCB area on densely-populated switch boards where every square millimeter counts. The SPI interface connects to baseboard management controllers (BMCs) such as the MAX32662, MCU-managed Ethernet PHYs, or service-processor subsystems. The SAR architecture's deterministic latency is favorable for firmware-driven polling loops in network-management firmware (SNMP, NETCONF). The MAX1113CPE+ operates from the same 5V rail that powers typical PHY and management-controller circuitry, eliminating the need for additional voltage rails. For industrial-temperature networking gear (outside-plant OLTs, industrial switches), the MAX1113EPE+ is a drop-in upgrade.
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추천 제품 요약
엔지니어링 참조 데이터: MAX1113CPE+ — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MAX1113EPE+ | MAX1112CPE+ | MAX1113MJP | MAX1113EEE+ |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | PDIP-16 | PDIP-16 | PDIP-16 | CERDIP-16 | QSOP-16 |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit |
| Channels (single-ended) | 4 SE / 2 diff | 4 SE / 2 diff | 8 SE / 4 diff | 4 SE / 2 diff | 4 SE / 2 diff |
| Sampling Rate | 1 ksps | 1 ksps | 1 ksps | 1 ksps | 1 ksps |
| Supply Voltage | +4.5V to +5.5V | +4.5V to +5.5V | +2.7V to +5.5V | +4.5V to +5.5V | +4.5V to +5.5V |
| Operating Temperature | 0C to +70C (commercial) | -40C to +85C (industrial) | 0C to +70C | -55C to +125C (military) | -40C to +85C (industrial) |
| Internal Reference | 2.5V | 2.5V | ratiometric to VDD | 2.5V | 2.5V |
주요 차별점
- Drop-in industrial-temperature upgrade in same 16-pin PDIP footprint (vs MAX1113EPE+)
- Doubling of channel count available in same package (vs MAX1112CPE+)
- Lowest total BOM cost via integrated reference and clock (vs MAX1062AEUB+ (14-bit upgrade path))
- Surface-mount migration paths without redesigning firmware (vs MAX1113EEE+ (QSOP-16) and MAX1113EWE+ (SO-16 wide))
설계 노트
Place a 0.1 µF ceramic decoupling capacitor as close as possible to the VDD pin (pin 7) with the ground end returned to the GND pin (pin 5) via a short trace. Add a 10 µF bulk capacitor on VDD if the supply rail shares routing with noisy digital loads (such as a microcontroller). For battery-powered designs, use the SHDN pin (pin 11, active-low) to duty-cycle the ADC; supply current drops below 10 µA in shutdown, extending battery life by 10-100x.
Keep analog input traces (AIN1-AIN4) short and guarded with a ground pour on both sides to minimize digital noise coupling from the SCLK and CS pins. Route the SCLK, CS, and DOUT traces (pins 8-10) away from analog input traces to avoid clock-feedthrough. For best INL/DNL performance, use a star-ground topology with the ADC ground pin (pin 5) as the central star point, especially when the design uses a single ground plane.
The MAX1113CPE+ SAR converter provides 8-bit resolution with 1 LSB typically around 9.8 mV (with 2.5V internal reference). Source impedance on analog inputs should be below 5 kOhm to avoid IR-drop errors in the internal track/hold settling time of 1.5 µs. Add an external op-amp buffer (such as the MAX4162 or MAX4475) if source impedance exceeds this limit. For ratiometric sensor bridge applications, use VDD as the reference (the MAX1112 variant supports this natively; the MAX1113 internal reference can be overridden externally).
Do not leave the SHDN pin floating; tie it to VDD through a 100 kOhm resistor if unused, or actively drive it from the microcontroller. Failure to do so can leave the part in indeterminate states between power-up and first CS assertion. The REF pin (pin 6) requires a 1-10 µF bypass capacitor to VDD to stabilize the internal 2.5V reference; omitting it degrades noise performance. Do not apply analog inputs exceeding VDD or going below GND by more than 0.3V — these out-of-range conditions can damage the input ESD structures and degrade long-term reliability.
규정 준수 정보
Pb-free '+' suffix indicates RoHS-compliant lead finish per Maxim/Analog Devices ordering information. Not AEC-Q100 qualified — choose MAX1113EPE+ for industrial, MAX1113MJP for military. Halogen-free status not explicitly listed in datasheet.
