MAX1039AEEE+TGC1 - 12-Ch 8-Bit SAR ADC, 2-Wire Serial | Maxim
MPN： MAX1039AEEE+TGC1 ✓ 啟用中MAX1039AEEE+TGC1 概覽
An 8-bit SAR ADC is a successive-approximation converter that resolves an analog input to 8 bits of digital output by sequentially testing each bit against an internal DAC. SAR ADCs are valued in the ADC family (ADC -> data converter -> mixed-signal IC -> semiconductor) for their deterministic latency, lack of pipeline delay, and excellent DC accuracy, which is why they are common in industrial process control, portable instrumentation, and battery-powered sensor monitoring. The MAX1039AEEE+TGC1 extends this architecture to up to 12 single-ended input channels, allowing a single IC to replace a discrete multiplexer plus ADC chain.
Key features of the MAX1039AEEE+TGC1 include 12 input channels (6/12 selectable), 8-bit resolution, an I2C-compatible 2-wire serial interface, and 2.7V to 5.5V single-supply operation. Internal features include a track/hold amplifier, voltage reference, and oscillator. Low-power design typically draws well under 1 mA at full sampling rate, suiting portable and battery-powered designs. The 16-pin QSOP footprint occupies a small PCB area suitable for space-constrained sensor modules.
The MAX1039AEEE+TGC1's successive-approximation core achieves one conversion per command with no pipeline delay, making the output immediately valid for control loops. Internal reference and clock generation minimize external component count, while the I2C-compatible interface supports up to 4 devices on a single bus for multi-ADC systems. Operating across -40C to +85C industrial temperature range, the part is suitable for factory, automotive-cabin, and outdoor-sensor environments.
Typical applications include battery monitoring in portable medical and industrial sensor nodes, HVAC system analog front ends, white-goods and appliance control boards, and panel-meter data acquisition. In each case the 12-channel input count and I2C interface reduce PCB complexity and microcontroller pin usage.
When designing with the MAX1039AEEE+TGC1, place 0.1 uF decoupling capacitors as close as possible to the VDD and GND pins and observe the I2C bus pull-up sizing rules for the selected data rate. Note that the +TGC1 suffix is a tape-and-reel and custom-marking code; the base die is identical to MAX1039AEEE+.
This page synthesizes distributor pricing, drop-in alternative ADCs in the 16-QSOP footprint, and practical design notes not aggregated on the manufacturer datasheet.
直接替換替代品，適用於 MAX1039AEEE+TGC1 — 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： MAX1039AEEE+TGC1 （相同外形與佔位） — 差異在於 Number of Input Channels, Resolution, Package, Interface, Supply Voltage.
MAX1039AEEE+
✅ 直接替換📋 參考替代品（不在目錄中）
MAX1239LEEE+T
✅ 直接替換聯絡詢價
查看資料表 →MAX1239KEEE+
✅ 直接替換📋 參考替代品（不在目錄中）
MAX1038AEEE+
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MAX1037EKA+TG05
✅ 直接替換聯絡詢價
查看資料表 →ADS7828E/250
✅ 直接替換📋 參考替代品（不在目錄中）
MAX1039AEEE+TGC1 最大額定值與電氣特性
| 解析度 | 8 bit |
| Number of Input Channels | 6 / 12 (selectable) |
| Architecture | SAR (Successive Approximation Register) |
| 供應電壓 | 2.7 V to 5.5 V |
| 介面 | I2C-compatible 2-wire serial |
| Analog Input Type | Single-ended |
| Internal Reference | Yes |
| Internal Track/Hold | Yes |
| Internal Clock | Yes |
| Number of ADCs | 1 |
| 封裝 | 16-QSOP |
| 工作溫度 | -40 C to +85 C |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
MAX1039AEEE+TGC1 腳位配置
| 腳位 1 | AIN0 — Analog input channel 0 |
| 腳位 2 | AIN1 — Analog input channel 1 |
| 腳位 3 | AIN2 — Analog input channel 2 |
| 腳位 4 | AIN3 — Analog input channel 3 |
| 腳位 5 | AIN4 — Analog input channel 4 |
| 腳位 6 | AIN5 — Analog input channel 5 |
| 腳位 7 | AIN6 — Analog input channel 6 |
| 腳位 8 | AIN7 — Analog input channel 7 |
| 腳位 9 | AIN8 — Analog input channel 8 |
| 腳位 10 | AIN9 — Analog input channel 9 |
| 腳位 11 | AIN10 — Analog input channel 10 |
| 腳位 12 | AIN11 — Analog input channel 11 |
| 腳位 13 | GND — Ground |
| 腳位 14 | SDA — Serial data (I2C) |
| 腳位 15 | SCL — Serial clock (I2C) |
| 腳位 16 | VDD — Positive supply |
典型應用
MAX1039AEEE+TGC1 適用於 6 應用s: Battery-Powered Sensor Node AFE, HVAC Environmental Monitoring, White-Goods and Appliance Control Boards, Industrial Panel Meter / Data Logger, Automotive Cabin Sensor Module, Portable Medical Monitoring Accessory.
Battery-Powered Sensor Node AFE
The MAX1039AEEE+TGC1 is well suited to battery-powered multi-sensor data acquisition because it operates from 2.7 V to 5.5 V and integrates 12 single-ended input channels, an internal reference, internal clock, and an I2C-compatible 2-wire serial interface. Its 8-bit SAR core provides deterministic conversion with no pipeline delay, allowing direct loop control without buffering. Placed on a 1-cell Li-ion or 2-cell alkaline board, the part can monitor temperature, humidity, and current-sense channels with one IC, eliminating a discrete MUX and reducing microcontroller pin count. Compared with a 12-bit upgrade, the 8-bit resolution is acceptable for threshold-based alerts where the absolute step size (~20 mV at 5 V FS) is smaller than the sensor's noise floor.
推薦
HVAC Environmental Monitoring
In HVAC controllers, the MAX1039AEEE+TGC1 monitors up to 12 analog channels - return-air temperature, supply-air temperature, humidity sensors, and pressure transducers - with a single I2C bus device. The 2.7 V to 5.5 V supply range is compatible with 3.3 V MCU rails, and the integrated reference simplifies the BOM. The SAR architecture returns each conversion immediately, simplifying firmware scheduling versus a pipelined ADC. The -40 C to +85 C operating range supports unconditioned plant rooms, while the 16-QSOP footprint fits the small analog-tile area of a typical controller PCB.
推薦
White-Goods and Appliance Control Boards
Washing machines, dishwashers, and refrigerators require multiple temperature and level sensors routed to one MCU. The MAX1039AEEE+TGC1 integrates 12 ADC channels in a 16-QSOP package, replacing a discrete MUX and ADC chain. Its 8-bit resolution is sufficient for thermistor temperature readout at 1 C steps when properly scaled, and the SAR latency of one conversion per I2C transaction allows synchronous reads without double-buffering. The 2.7 V to 5.5 V supply accepts 5 V white-goods rails directly. A 0.1 uF decoupling capacitor on VDD and observance of the I2C pull-up sizing rules are the only mandatory external components.
推薦
Industrial Panel Meter / Data Logger
Handheld panel meters and data loggers benefit from the MAX1039AEEE+TGC1's low supply current, 12 input channels, and I2C interface that minimizes MCU pin usage. The SAR architecture gives deterministic conversion timing, useful when the logger timestamps each sample. The 8-bit resolution is sufficient for voltage, current, and frequency-derived sensor outputs in field-maintenance equipment. A single 16-QSOP part plus an MCU and display replaces an entire analog front-end board, reducing BOM cost and assembly time. Industrial -40 C to +85 C operation supports outdoor and factory-floor deployments.
推薦
Automotive Cabin Sensor Module
In non-safety automotive cabin electronics, the MAX1039AEEE+TGC1 reads up to 12 analog sensors - interior temperature, sun-load, humidity, and seat-occupancy signals - on a single I2C bus. The 2.7 V to 5.5 V range is compatible with 5 V body-controller rails, and the 16-QSOP package simplifies thermal management on a small PCB. The 8-bit SAR resolution provides ~20 mV steps at 5 V full scale, adequate for thermistor-based cabin-temperature monitoring. Note: this part is not AEC-Q100 qualified; AEC-Q100 applications should use a qualified successor such as MAX11128 or a similar automotive-graded ADC.
推薦
Portable Medical Monitoring Accessory
Wearable medical accessories such as pulse-oximeter pods, body-worn temperature patches, and portable spirometers need multi-channel analog monitoring with low power draw. The MAX1039AEEE+TGC1's 2.7 V to 5.5 V supply and integrated reference support a 3 V coin-cell or single Li-ion rail. The I2C interface reduces wiring to two lines, ideal for sealed disposables. The SAR latency of one conversion per I2C command simplifies real-time display updates. Note: this part is not a medical-grade device; FDA-cleared systems should verify the ADC selection against the regulatory submission. Use 8-bit resolution for threshold-detect accessories where cost dominates precision.
推薦
推薦產品摘要
工程參考資料，適用於 MAX1039AEEE+TGC1 — 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 | MAX1039AEEE+ | MAX1239LEEE+T | MAX1239KEEE+ | MAX1038AEEE+ | ADS7828E/250 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Package | 16-QSOP | 16-QSOP - same | 16-QSOP - same | 16-QSOP - same | 16-QSOP - same | 16-QSOP - same |
| Resolution | 8 bit | 8 bit | 12 bit | 12 bit | 10 bit | 12 bit |
| Input Channels | 6 / 12 | 6 / 12 | 12 | 12 | 12 | 8 |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 5.5 V | 2.7 V to 5.25 V |
| Interface | I2C 2-wire | I2C 2-wire | I2C 2-wire | I2C 2-wire | I2C 2-wire | I2C 2-wire |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
| Internal Reference | Yes | Yes | Yes | Yes | Yes | Yes |
主要差異化特點
- Pin-compatible upgrade path to 12-bit resolution (對比MAX1239KEEE+)
- Higher channel density than competing 8-bit I2C ADCs (對比ADS7828E/250)
- Wider supply range than 3.3V-only Maxim variants (對比MAX1239KEEE+)
設計說明
Place a 0.1 uF decoupling capacitor as close as possible to the VDD pin and a bulk capacitor (1-10 uF) on the same supply trace. Keep the analog input traces short and routed away from the I2C clock line to minimize crosstalk. The exposed thermal pad is not present on QSOP-16; ensure the GND pin return is low-impedance.
The SAR architecture draws a brief current spike at the start of each conversion. Add 10 nF-100 nF ceramic bypass on each AIN trace if the source impedance exceeds 1 kohm, and ensure source impedance is below the datasheet maximum to avoid gain error. For 8-bit accuracy, an input RC of <10 kohm/200 pF is usually adequate.
Do not exceed 5.5 V on VDD or apply reverse polarity - the part lacks internal protection. Observe the I2C bus pull-up sizing rules: typical 2.2 kohm to 10 kohm at 100 kHz, lower at 400 kHz. The A0 hardware address pin must be tied to GND, VDD, SDA, or SCL to select one of four slave addresses.
合規資訊
RoHS compliant per DigiKey and Maxim product page. Not AEC-Q100 qualified; choose a qualified automotive part for safety applications. Halogen-free status not explicitly stated in the verified web data.
