MAX1036EKA+TG002 - 8-Bit 4/12-Ch 2-Wire Serial ADC | Maxim
MPN： MAX1036EKA+TG002 ✗ 停產MAX1036EKA+TG002 概覽
An SAR (Successive Approximation Register) ADC is a class of data converter that uses a binary-search algorithm combined with an internal DAC to resolve analog inputs in N conversion cycles for N-bit precision. The MAX1036 family integrates a track-and-hold amplifier, internal voltage reference, internal oscillator, and an I2C-compatible 2-wire serial interface (400 kHz Fast Mode and 1.7 MHz High-Speed Mode) into a single die, allowing direct connection to a microcontroller or processor without external precision components.
Key features include four analog inputs configurable as either 4 single-ended or 12 single-ended channels via software, an internal 2.048V reference (with the option to use an external reference up to AVDD), software-configurable unipolar/bipolar modes, low supply current, and an automatic power-down between conversions that drops consumption to microampere levels. The internal reference provides tight initial accuracy and low drift, simplifying BOM cost and PCB area.
Architecture is a charge-redistribution SAR with switched-capacitor input, supporting 0 to VREF input range. The 2-wire interface is I2C-compatible with address selection, enabling up to four MAX1036 devices on the same bus. AutoShutdown reduces average supply current to 200 uA at low throughput.
Typical applications include portable instrumentation, battery monitoring, system monitoring in servers and networking equipment, panel meters, and digital multimeters. The wide supply range (2.7V to 5.5V) and small SOT-23 footprint make it well-suited for space-constrained, low-power designs.
A design consideration: the SOT-23-8 package has a thermal resistance around 170 C/W; ensure decoupling with 0.1 uF and 1 uF capacitors close to AVDD, and route analog/digital grounds in a star-ground pattern to minimize digital switching noise coupling into analog inputs.
This page synthesizes distributor pricing, drop-in alternatives, application circuits and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 MAX1036EKA+TG002 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MAX1036EKA+TG002 （相同外形與佔位） — 差異在於 Resolution, Number of Input Channels, Package, Operating Temperature, Sampling Rate.
MAX1037EKA+T
✅ 直接替換📋 參考替代品（不在目錄中）
MAX1036EKA+T
✅ 直接替換📋 參考替代品（不在目錄中）
MAX1036LEKA+T
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADS7822PG4
✅ 直接替換聯絡詢價
查看資料表 →ADS1110A6IDBVR
聯絡詢價
查看資料表 →MAX1036EKA+TG002 最大額定值與電氣特性
| 解析度 | 8 bit |
| Number of Channels | 4 / 12 (single-ended, software-configurable) |
| 供應電壓 | 2.7 V to 5.5 V |
| 取樣率 | 94 ksps |
| Supply Current (Active) | 1.5 mA |
| Supply Current (AutoShutdown) | 200 uA (typical) |
| Internal Reference Voltage | 2.048 V |
| External Reference Input | Up to AVDD |
| Input Range | 0 V to VREF (unipolar); +/-VREF (bipolar) |
| Serial Interface | I2C-compatible 2-wire, 400 kHz Fast / 1.7 MHz High-Speed |
| 封裝 | SOT-23-8 |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C |
| Architecture | SAR (Successive Approximation Register) |
| MSL 等級 | 1 |
| RoHS 狀態 | Compliant |
MAX1036EKA+TG002 腳位配置
| 腳位 1 | AIN3/SCL — Analog input 3 / I2C clock (function select via configuration register) |
| 腳位 2 | AIN2/SDA — Analog input 2 / I2C data (function select via configuration register) |
| 腳位 3 | AIN1 — Analog input 1 |
| 腳位 4 | AVDD — Analog supply voltage (2.7V to 5.5V) |
| 腳位 5 | GND — Ground |
| 腳位 6 | REF — External reference input / bypass for internal 2.048V reference |
| 腳位 7 | AIN0 — Analog input 0 |
| 腳位 8 | AD0/CS — I2C address select / chip select |
典型應用
MAX1036EKA+TG002 適用於 6 應用s: Portable Battery-Powered Instrumentation, Server & Networking System Monitoring, Panel Meters and Digital Displays, Industrial Sensor Digitization, Digital Multimeter (DMM) Front-End, Automotive Sensor Cluster (Legacy).
Portable Battery-Powered Instrumentation
The MAX1036EKA+TG002's 2.7V to 5.5V supply range and 1.5 mA active current make it well-suited for portable, battery-powered instrumentation. The internal 2.048V reference eliminates the need for an external precision reference, and AutoShutdown reduces average current to microampere levels between conversions, extending battery life. The 8-pin SOT-23-8 footprint conserves PCB area, making it ideal for handheld multimeters, field sensors, and portable data loggers where resolution needs are moderate.
推薦
Server & Networking System Monitoring
The MAX1036EKA+TG002's 4-channel input and 2-wire I2C interface make it well-suited for monitoring multiple analog rails (temperature, voltage, current) in server and networking equipment. The 94 ksps throughput is more than sufficient for housekeeping and supervisory monitoring at sub-Hz sample rates. Up to four devices can share a single I2C bus via the hardware address pin. The 2.048V internal reference is ratiometric to the AVDD supply, simplifying calibration when monitoring supply rails.
推薦
Panel Meters and Digital Displays
The MAX1036EKA+TG002's 8-bit resolution and 4-channel input suit panel-meter applications measuring voltage, current, temperature, and pressure. The 2.7V to 5.5V supply range and small SOT-23-8 footprint allow integration into compact meter housings. The internal 2.048V reference provides sufficient accuracy for industrial panel-meter display resolutions. Bipolar input mode enables direct measurement of shunt currents and differential signals without external signal conditioning.
推薦
Industrial Sensor Digitization
The MAX1036EKA+TG002's 4 single-ended input channels directly accept signals from industrial sensors (thermistors, photocells, potentiometers, 4-20 mA loop resistors). The 8-bit resolution and 2.048V internal reference suit sensor output digitization for HVAC controllers, factory automation endpoints, and process-control equipment. The wide -40C to +85C operating temperature range supports industrial environment deployments. AutoShutdown keeps average power below 1 mW for always-on sensor nodes.
推薦
Digital Multimeter (DMM) Front-End
The MAX1036EKA+TG002's 4-channel input and bipolar measurement mode (with +/-VREF range) suit low-cost handheld digital multimeter designs measuring DC voltage up to 2.048V (extendable via input dividers). The 8-bit resolution supports counts-of-200 DMM displays. The internal 2.048V reference provides adequate stability for general-purpose measurements, and the 2.7V to 5.5V supply range allows single-cell Li-ion or 9V-battery operation via boost or linear regulators.
推薦
Automotive Sensor Cluster (Legacy)
The MAX1036EKA+TG002's wide operating temperature range (-40C to +85C) and 2.7V to 5.5V supply range support legacy automotive sensor cluster applications. Note: the part is not AEC-Q100 qualified, so use the MAX1037EKA+T-Q or equivalent automotive-qualified part for new designs. The 4-channel input allows monitoring of fuel-level, oil-pressure, and temperature sensors via a single ADC. The internal reference and 2-wire interface minimize external component count.
推薦
推薦產品摘要
工程參考資料，適用於 MAX1036EKA+TG002 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MAX1037EKA+T | MAX1036EKA+T | MAX1036LEKA+T | ADS7822PG4 | ADS1110A6IDBVR |
|---|---|---|---|---|---|---|
| Package | SOT-23-8 | SOT-23-8 - same | SOT-23-8 - same | SOT-23-8 - same | SOT-23-8 - same | SOT-23-6/8 - same |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Texas Instruments | Texas Instruments |
| Resolution | 8 bit | 10 bit | 8 bit | 8 bit | 8 bit | 16 bit |
| Number of Channels | 4 single-ended | 4 single-ended | 4 single-ended | 4 single-ended | 4 single-ended (or 2 differential) | 1 differential |
| Sampling Rate | 94 ksps | 94 ksps | 94 ksps | 94 ksps | 200 kHz interface, ~50 ksps | 0.128 ksps (configurable) |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V (low-voltage) | 2.7V to 5.5V | 2.7V to 5.5V |
| Internal Reference | 2.048V | 2.048V | 2.048V | 2.048V | External only | 2.048V internal |
| Serial Interface | I2C 2-wire, 400 kHz / 1.7 MHz | I2C 2-wire, 400 kHz / 1.7 MHz | I2C 2-wire, 400 kHz / 1.7 MHz | I2C 2-wire, 400 kHz / 1.7 MHz | I2C, 200 kHz | I2C, up to 400 kHz |
| Lifecycle Status | Obsolete | Active | Obsolete | Active | Obsolete (check TI) | Active |
主要差異化特點
- Pin-compatible upgrade to 10-bit resolution (對比MAX1036EKA+T)
- Higher-speed I2C interface (對比ADS7822PG4)
- Integrated 2.048V internal reference (對比ADS7822PG4)
設計說明
Decouple AVDD with a 0.1 uF X7R ceramic capacitor placed within 5 mm of the pin, plus a 1 uF to 10 uF bulk capacitor for noisy supply environments. The 2.048V internal reference requires a 0.1 uF bypass on the REF pin. Estimated: with all 4 channels active at 94 ksps, average current is approximately 1.5 mA; with AutoShutdown enabled and 1 ksps sample rate, average current drops below 100 uA. Use software-controlled acquisition to minimize active-time power.
Use a star-ground topology with separate analog (AGND) and digital (DGND) return paths tied at a single point near the AVDD bypass capacitor. The SOT-23-8 package has a thermal resistance of approximately 170 C/W; ensure the analog input traces are kept short and shielded by ground pours to minimize digital switching noise coupling. Place the REF bypass capacitor directly across pin 5 (GND) and pin 6 (REF).
Do not apply analog input voltages beyond AVDD or below GND, as the input ESD diodes will conduct and potentially damage the device. When using the internal 2.048V reference, ensure no DC current is drawn from the REF pin; high source impedance on the analog inputs degrades acquisition accuracy. Bipolar mode requires the SETUP register bit REF=0 (external reference) and the BIP bit = 1. Do not exceed the I2C maximum clock frequency for the selected speed mode (400 kHz Fast, 1.7 MHz High-Speed).
合規資訊
RoHS and REACH compliant per Maxim/Analog Devices product page. Not AEC-Q100 qualified - not suitable for automotive safety-critical applications. Lead-free (Pb-free) per MSL1 rating.
