MAX1036EKA+G002 - 8-Bit I2C ADC, 4-Ch, SOT-23-8 | Maxim
부품 번호: MAX1036EKA+G002 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.42 | $34.20 |
| 100 | $2.95 | $295.00 |
| 500 | $2.58 | $1,290.00 |
| 1,000 | $2.24 | $2,240.00 |
MAX1036EKA+G002 개요
An ADC (Analog-to-Digital Converter) is a data-acquisition integrated circuit that samples continuous analog voltage signals and converts them into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Successive-approximation-register (SAR) ADCs like the MAX1036 family use an internal capacitive DAC and comparator to perform one-bit-per-clock conversions, offering deterministic latency, low power, and excellent DC accuracy for multi-channel sensor monitoring and instrumentation.
Key features of the MAX1036EKA+G002 include four single-ended or two differential analog input channels (selectable), an internal track/hold (T/H), a 4.096 V internal reference (also configurable for external reference), a 400 kHz Fast-Mode and 1.7 MHz High-Speed-Mode I2C-compatible serial interface, and an operating supply range of 2.7 V to 5.5 V. The internal reference and 4-channel MUX allow direct connection to sensors without external scaling.
The MAX1036 uses a low-charge-injection input T/H that supports input bandwidths well beyond the Nyquist limit for accurate sampling of fast signals. With 188 ksps throughput and 8-bit resolution, the device offers low latency for loop control and panel-meter designs. The I2C/SMBus-compatible 2-wire serial bus reduces microcontroller I/O pin count and supports multi-device addressing.
Typical applications include portable instrumentation, battery monitoring, panel meters, isolated sensor data acquisition, and 4-20 mA loop-powered transmitters. The wide supply range and integrated MUX make it well-suited for handheld multi-channel measurement.
When designing with this device, place a 0.1 uF bypass capacitor on the supply pin and use a low-impedance reference bypass capacitor. The I2C bus pull-ups must be sized correctly for the selected bus speed (400 kHz or 1.7 MHz).
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the standard distributor product pages, supporting component selection for new designs and BOM substitutions.
드롭인 대체품: MAX1036EKA+G002 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MAX1036EKA+G002 (동일 폼 팩터 및 풋프린트) — 차이점: Package, Analog Input Range, Number of Input Channels, Resolution, Mounting Type.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MAX1036EKA+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1036EKA-T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1036MEKA+T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1037EKA+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX11120EKA+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS7822PG4
✅ 드롭인✓ 재고 있음
$3.2 / 개
데이터시트 보기 →ADC128S052CIMT
✅ 드롭인✓ 재고 있음
$2.13 / 개
데이터시트 보기 →MAX1036EKA+G002 최대 정격 & 전기적 특성
| 분해능 | 8 bits |
| Number of Input Channels | 4 single-ended / 2 differential |
| Conversion Rate | 188 ksps |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Internal Reference | 4.096 V |
| External Reference Support | Yes |
| 인터페이스 | I2C-compatible, 2-wire serial |
| I2C Bus Speed | 400 kHz Fast Mode, 1.7 MHz High-Speed Mode |
| Analog Input Range | 0 to VREF (single-ended) |
| Track/Hold | Internal |
| 동작 온도 | -40 C to +85 C |
| 패키지 | SOT-23-8 |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Family | MAX1036/MAX1037/MAX1038/MAX1039 |
| Conversion Architecture | SAR (Successive Approximation Register) |
MAX1036EKA+G002 핀 구성
| 핀 1 | AIN0/AIN0+ — Analog input 0 (single-ended) or positive differential input (S) |
| 핀 2 | AIN1/AIN1- — Analog input 1 (single-ended) or negative differential input (S) |
| 핀 3 | AIN2/AIN2+ — Analog input 2 (single-ended) or positive differential input (S) |
| 핀 4 | AIN3/AIN2- — Analog input 3 (single-ended) or negative differential input (S) |
| 핀 5 | GND — Ground reference for analog and digital sections |
| 핀 6 | REF — Reference voltage input/output (4.096 V internal or external reference input) |
| 핀 7 | SDA — I2C serial data input/output (open-drain, requires pull-up) |
| 핀 8 | SCL — I2C serial clock input |
일반적인 애플리케이션
MAX1036EKA+G002 적합 용도: 7 애플리케이션s: Portable Battery-Powered Instrumentation, Industrial 4-20 mA Loop-Powered Sensor Transmitters, Panel Meters and Digital Displays, Isolated Sensor Data Acquisition Modules, Automotive Sensor Signal Acquisition, Microcontroller-Based Sensor Hubs, Power Supply Voltage and Current Monitoring.
Portable Battery-Powered Instrumentation
The MAX1036EKA+G002's 2.7 V to 5.5 V supply range and integrated 4.096 V reference make it ideal for handheld multimeters and portable data loggers powered from a single Li-ion cell (3.0 V to 4.2 V) or USB (5 V). Its 4 single-ended input channels accept signals from thermistors, photodiodes, and strain gauges with no external signal conditioning. The SOT-23-8 package fits in tight handheld enclosures, and 188 ksps conversion rate allows the device to spend most of its time in shutdown, drawing microamps between conversions for extended battery runtime.
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Industrial 4-20 mA Loop-Powered Sensor Transmitters
The MAX1036EKA+G002 is well-suited for 4-channel industrial sensor readout boards (load cells, RTDs, flow sensors) because its internal 4.096 V reference eliminates the need for an external precision reference IC, reducing BOM cost and PCB area. The 4 input channels allow direct connection to 4 sensor bridges with channel-select via the MUX, while the I2C interface simplifies isolation barrier implementation. The wide -40 C to +85 C operating range supports industrial environmental specs. The integrated T/H ensures accurate sampling even with high source-impedance sensors.
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Panel Meters and Digital Displays
The MAX1036EKA+G002's combination of 4 input channels, integrated reference, and I2C interface is ideal for digital panel meters that read voltage, current, temperature, and pressure from 4 sensors with a single ADC. The 188 ksps conversion rate provides fast display update rates for real-time process monitoring, and the SOT-23-8 package fits behind small LCD/OLED displays. The internal 4.096 V reference supports direct connection to 0-10 V process signals through input dividers, eliminating the need for a separate reference IC.
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Isolated Sensor Data Acquisition Modules
The MAX1036EKA+G002 is widely used in isolated data acquisition front-ends (4-20 mA, thermocouple, RTD readers) where the I2C interface simplifies digital isolation through standard digital isolators. The 2-wire serial interface requires only 2 isolator channels, minimizing isolator cost versus parallel-interface ADCs. The integrated reference and 4-channel MUX allow direct sensor interfacing on the field side of the isolation barrier. Per the Maxim datasheet, the 1.7 MHz High-Speed-Mode I2C enables fast isolated data throughput.
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Automotive Sensor Signal Acquisition
The MAX1036EKA+G002's -40 C to +85 C operating range and integrated 4.096 V reference make it suitable for non-safety automotive sensor acquisition (cabin environment sensors, battery monitors, climate control sensors). The 4 input channels accept signals from multiple cabin sensors (temperature, humidity, light) for HVAC control, and the I2C interface connects directly to automotive microcontrollers. The SOT-23-8 package withstands automotive underbodying. For underbody or AEC-Q100 qualified applications, use the MAX1036EKA+T automotive grade variant.
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Microcontroller-Based Sensor Hubs
The MAX1036EKA+G002 is ideal for IoT sensor hubs and edge devices where a microcontroller needs to read 4 analog sensors (temperature, light, sound, motion) over I2C. The 2-wire serial interface requires only 2 microcontroller pins, leaving more pins for digital sensors, and the user to upload firmware updates. The 188 ksps conversion rate supports high-rate sensor sampling for vibration and audio analysis. The SOT-23-8 package fits in space-constrained sensor modules.
추천
Power Supply Voltage and Current Monitoring
The MAX1036EKA+G002's 4 input channels and integrated 4.096 V reference support direct connection to power-supply voltage and current monitoring points. The 4 channels can monitor 4 rails (3.3 V, 5 V, 12 V, 24 V) through input dividers, while the integrated reference provides accurate ADC readings without an external reference. The SOT-23-8 package fits on power-supply daughter cards, and the I2C interface connects to system management controllers for telemetry logging and fault detection.
추천
추천 제품 요약
엔지니어링 참조 데이터: MAX1036EKA+G002 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MAX1036EKA+ | MAX1036EKA-T | MAX1036MEKA+T | MAX1037EKA+ | MAX11120EKA+ | ADS7822PG4 |
|---|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated - same | Maxim Integrated - same | Maxim Integrated - same | Maxim Integrated - same | Maxim Integrated - same | Texas Instruments |
| Package | SOT-23-8 | SOT-23-8 - same | SOT-23-8 - same | SOT-23-8 - same | SOT-23-8 - same | SOT-23-8 - same | SOT-23-8 - same |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits | 8 bits | 12 bits (+50%) | 12 bits (+50%) |
| Input Channels | 4 single-ended / 2 differential | 4 / 2 | 4 / 2 | 4 / 2 | 4 / 2 | 4 / 2 | 4 / 2 |
| Conversion Rate | 188 ksps | 188 ksps | 188 ksps | 188 ksps | 188 ksps | 225 ksps | 200 ksps |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 3.6 V (lower max) | 2.7 V to 5.5 V | 2.7 V to 5.25 V |
| Internal Reference | 4.096 V | 4.096 V | 4.096 V | 4.096 V | 2.048 V | 2.5 V | External only |
| Interface | I2C (400 kHz / 1.7 MHz) | I2C | I2C | I2C | I2C | I2C | I2C / SPI |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
주요 차별점
- Integrated 4.096 V reference (no external reference IC required) (vs ADS7822PG4)
- 1.7 MHz High-Speed-Mode I2C support (vs MAX1036EKA+ (standard I2C only))
- 4 single-ended / 2 differential input channels in tiny SOT-23-8 (vs ADS7822PG4)
- Wide supply voltage range (2.7 V to 5.5 V) (vs MAX1037EKA+)
설계 노트
Place a 0.1 uF low-ESR ceramic bypass capacitor as close as possible to the VDD pin (pin 5 GND reference). For optimal reference stability, add a 1 uF-10 uF ceramic capacitor on the REF pin (pin 6) to filter reference noise. Per the Maxim datasheet, the supply current is in the microamp range during conversion and lower in shutdown mode. Use shutdown mode aggressively between conversions for battery-powered designs.
Route the SDA (pin 7) and SCL (pin 8) traces as a differential pair with matched lengths to maintain signal integrity at the 1.7 MHz High-Speed-Mode bus speed. Keep analog input traces (pins 1-4) short and away from digital switching signals. Place a ground plane under the device to provide low-impedance return paths and minimize coupling. Avoid routing analog traces under the SDA/SCL traces to prevent crosstalk.
Do not exceed the absolute maximum input voltage of VDD + 0.3 V on any analog input pin (pins 1-4); exceeding this can permanently damage the device. Use input voltage dividers for signals exceeding VDD. Ensure the I2C pull-up resistors are sized correctly for the selected bus speed - 1 kohm to 10 kohm typical for 400 kHz, lower for 1.7 MHz High-Speed-Mode. Per the Maxim datasheet, the I2C address is hardware-configurable; verify addressing when using multiple devices on the same bus.
For high-source-impedance sensors, add input buffer amplifiers to drive the MAX1036EKA+G002's input capacitance (10 uF typical). Without buffering, high source impedance causes gain errors and conversion inaccuracy. The MAX1036's SAR architecture provides excellent DC accuracy, but AC performance is limited by the 188 ksps Nyquist frequency; for higher-bandwidth signals, use a higher-speed ADC such as the MAX1067.
규정 준수 정보
RoHS compliant per Maxim/Analog Devices product page. Not AEC-Q100 qualified - use MAX1036 automotive grade for automotive applications. Lead-free per Maxim packaging standards.
