MAX11339ATJ+T - 10-Bit 500ksps 8-Ch SAR ADC | Maxim Integrated
MPN： MAX11339ATJ+T ✓ 啟用中MAX11339ATJ+T 概覽
What is a SAR ADC? A successive approximation register ADC is a type of analog-to-digital converter that uses an iterative binary-search algorithm against an internal or external DAC to convert an analog input into a digital code. SAR ADCs deliver deterministic latency, no pipeline delay, and excellent DC accuracy, placing them in the hierarchy: SAR ADC -> ADC -> data converter -> mixed-signal IC. The MAX11339 family integrates an analog input multiplexer and track-and-hold, allowing one ADC core to sequentially sample many channels while preserving full sample-rate performance per channel.
Key features include an integrated 4 or 8 input multiplexer, dedicated track-and-hold amplifier with 1:1 MUX:S&H:ADC ratio, SPI / DSP-compatible digital interface, and access to the post-mux analog front end for external signal conditioning such as programmable gain or filtering. The wide input range spans the analog supply rails, and the reference voltage is supplied externally to allow full-scale input scaling to match sensor or signal levels.
Typical applications include industrial process control loops, multichannel data acquisition systems, automotive sensor monitoring, and embedded instrumentation front ends. The deterministic conversion latency also makes the part well suited to closed-loop control systems where predictable timing is required.
When designing the input chain, place an RC anti-aliasing filter on each channel as close to the input pin as possible, and bypass the analog and digital supplies with 100 nF plus 10 uF ceramic capacitors. Drive the inputs through a low-impedance buffer if the source impedance exceeds 1 kohm to avoid conversion errors caused by incomplete settling of the internal S&H.
直接替換替代品，適用於 MAX11339ATJ+T — 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： MAX11339ATJ+T （相同外形與佔位） — 差異在於 Input Type, Package, Operating Temperature, Resolution, Data Interface.
MAX11321ATJ+T
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MAX11324ATJ+T
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MAX11332ATJ+T
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MAX11340ATJ+T
✅ 直接替換📋 參考替代品（不在目錄中）
MAX11164ETC+T
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MAX11339ATJ+T 最大額定值與電氣特性
| 解析度 | 10 bit |
| Number of Channels | 4 or 8 input (single-ended / pseudo-differential / differential) |
| 取樣率 | 500 ksps |
| ADC Architecture | SAR (Successive Approximation Register) |
| Number of ADC Cores | 1 |
| MUX:S&H:ADC Ratio | 1:1 |
| Data Interface | SPI, DSP-compatible serial |
| Reference Type | External |
| Input Type | Differential, Pseudo-Differential, Single-Ended |
| Configuration | MUX-S/H-ADC |
| 封裝 | 32-TQFN (5x5 mm) with exposed pad |
| Terminal Form | No Lead |
| Temperature Grade | Automotive |
| 安裝類型 | Surface Mount |
MAX11339ATJ+T 32-tqfn (5x5 mm) with exposed pad 腳位配置指南
MAX11339ATJ+T（32-tqfn (5x5 mm) with exposed pad 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： MAX11339ATJ+T.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAX11339ATJ+T 適用於 6 應用s: Industrial Process Control Loops, Automotive Sensor Monitoring, Multichannel Data Acquisition Systems, Medical Monitoring Front Ends, Embedded Instrumentation, Power Management and Battery Monitoring.
Industrial Process Control Loops
The MAX11339ATJ+T is well suited to industrial process control loops requiring multi-channel analog monitoring with deterministic conversion latency. Its 500 ksps sample rate combined with 8 input channels allows simultaneous reading of pressure, temperature, flow, and level transmitters at update rates exceeding 10 kHz per channel. The SAR architecture provides no pipeline delay, enabling tight feedback loop closures critical for valve and actuator control. The SPI / DSP-compatible interface simplifies integration with industrial DSPs and microcontrollers, while the external reference allows scaling for 4-20 mA current loop receivers or 0-10 V transducer outputs.
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Automotive Sensor Monitoring
The MAX11339ATJ+T's automotive temperature grade (-40 C to +125 C) qualifies it for vehicle sensor monitoring applications including battery management, HVAC temperature sensing, and body-control analog inputs. The 8-channel mux supports multi-sensor scanning with one ADC, while the 10-bit resolution meets the precision needs of position, current, and thermal sensors. The SAR architecture's deterministic latency enables hard-real-time engine and chassis control loops, and the 32-TQFN package with exposed thermal pad withstands automotive vibration and thermal stress. The SPI interface connects directly to automotive MCUs and DSPs without glue logic.
推薦
Multichannel Data Acquisition Systems
The MAX11339ATJ+T is ideal for portable and benchtop data acquisition systems requiring simultaneous sampling of multiple analog sources. Its 500 ksps throughput and 8 input channels support scan rates above 60 kHz per channel, fast enough for vibration analysis, audio-bandwidth instrumentation, and scientific data logging. The external reference accommodates high-precision voltage references (such as the MAX6126) for laboratory-grade absolute accuracy, while the SAR architecture ensures the low-latency response required for trigger and event-capture applications. The TQFN-32 5x5 mm footprint simplifies integration into compact DAQ module designs.
推薦
Medical Monitoring Front Ends
The MAX11339ATJ+T serves multi-parameter patient monitoring equipment by digitizing biosignal channels including ECG, SpO2, respiration, and body temperature with its 8 single-ended or differential analog inputs. The 10-bit resolution and 500 ksps sample rate comfortably cover audio-bandwidth ECG bandwidths (typically 0.05-150 Hz after DSP decimation), while the SAR architecture's deterministic latency prevents timing artifacts in synchronized multi-channel recordings. The low-power design extends battery life in portable patient monitors, and the post-mux external conditioning access permits insertion of patient-protection and gain stages between the multiplexer output and the ADC input.
推薦
Embedded Instrumentation
The MAX11339ATJ+T fits embedded instrumentation front ends such as oscilloscope-like probes, programmable logic controllers, and industrial test equipment requiring multi-channel analog capture at deterministic sample timing. Its SPI interface supports high-speed data transfer to FPGAs and microcontrollers, while the SAR architecture's lack of pipeline delay suits real-time triggering and synchronous sampling use cases. The external reference permits calibration scaling in test-and-measurement applications, and the automotive temperature grade plus small TQFN package supports deployment in confined enclosures. Pre-conditioning is straightforward given post-mux external conditioning access.
推薦
Power Management and Battery Monitoring
The MAX11339ATJ+T is a good fit for battery management systems that need to monitor multiple cell voltages, pack currents, and temperatures in series-stack battery packs. The 8-channel differential input mode allows direct measurement across stacked battery cells with ground-referenced common-mode handling, while the 500 ksps rate supports fast over-current and short-circuit detection. The SPI interface connects to battery management MCUs and DSPs, and the SAR architecture provides deterministic latency required for synchronous cell balancing. The automotive-grade temperature rating suits EV and industrial energy storage deployments.
推薦
推薦產品摘要
工程參考資料，適用於 MAX11339ATJ+T — 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 | MAX11321ATJ+T | MAX11324ATJ+T | MAX11332ATJ+T | MAX11340ATJ+T | MAX11164ETC+T |
|---|---|---|---|---|---|---|
| Brand | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated |
| Package | 32-TQFN (5x5 mm) | 32-TQFN (5x5 mm) - same | 32-TQFN (5x5 mm) - same | 32-TQFN (5x5 mm) - same | 32-TQFN (5x5 mm) - same | TQFN equivalent - same family footprint |
| Data Interface | SPI / DSP-compatible | SPI | SPI | SPI | SPI / DSP-compatible | SPI |
| Reference Type | External | External | External | External | External | External |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
主要差異化特點
- Highest sample rate in the 10-bit 8-channel TQFN-32 family (對比MAX11321ATJ+T)
- 10-bit resolution for lower-cost applications where 12 bits are not required (對比MAX11340ATJ+T)
- Post-mux external signal conditioning access (對比MAX11164ETC+T)
設計說明
Place the input anti-aliasing RC network (typically 10 ohm to 100 ohm and a few nF of capacitance) as close to each analog input pin as possible to limit induced noise pickup. The exposed thermal pad on the TQFN-32 package must be soldered to a continuous ground plane on the top or bottom PCB layer for thermal dissipation and low-impedance ground return.
Separate the analog and digital ground planes and join them at a single point beneath or near the ADC. Route digital lines (SCLK, DOUT, DIN, CS) away from the analog input traces and bypass capacitor returns, and keep the analog supply trace short and wide to minimize IR drop. Add 100 nF plus 10 uF ceramic bypass capacitors directly on the AVDD and DVDD pins.
If the source impedance of the analog signal exceeds approximately 1 kohm, the internal track-and-hold may not fully settle within the acquisition window, causing conversion errors. Either reduce the source impedance with a buffer amplifier or increase the acquisition time by reducing the sample rate. Validate that the external reference voltage stays within the device's specified range under load.
合規資訊
Compliance flags not present in the verified web data snippets. RoHS, REACH, AEC-Q100, lead-free and halogen-free status should be verified against the manufacturer datasheet before design-in.
