MAX11044BETN+T - 16-Bit 4-Ch 250kSPS Simultaneous-Sampling ADC | Maxim
料号： MAX11044BETN+T ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.45 | $18.45 |
| 10 | $16.62 | $166.20 |
| 100 | $14.81 | $1,481.00 |
| 500 | $13.55 | $6,775.00 |
| 1,000 | $12.3 | $12,300.00 |
MAX11044BETN+T 概述
An ADC (Analog-to-Digital Converter) is a semiconductor device that converts continuous analog voltages into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Successive-approximation register (SAR) ADCs use a binary-search algorithm through an internal DAC to converge on the input voltage in N clock cycles for N-bit resolution, providing an excellent balance of speed, accuracy, and power for multi-channel data-acquisition systems. Simultaneous-sampling ADCs add per-channel T/H stages so all channels are captured at the exact same instant — critical for phase-sensitive measurements such as three-phase power, vibration, and multi-axis motion control.
Key features include a high-speed parallel digital interface, an internal 2.5 V reference (with optional external reference support), and per-channel overrange detection flags. The integrated T/H architecture eliminates inter-channel skew, while the high input impedance simplifies front-end signal conditioning. The 56-TQFN (8x8) exposed-pad package provides a low thermal resistance path, enabling reliable operation across the -40 C to +85 C industrial temperature range.
The MAX11044B variant is the production-proven B-revision of the MAX11044 silicon — pin-compatible and software-compatible with the original. It shares a footprint with the 6-channel MAX11054 and 8-channel MAX11056, allowing scalable designs. The architecture delivers 84 dB SINAD and 100 dB SFDR typical at 250 ksps, suitable for precision instrumentation.
Primary use cases include three-phase power monitoring, multi-axis motor control, vibration and acoustic analysis, and industrial data-acquisition front-ends where channel-to-channel phase accuracy is mandatory. The wide input common-mode range and high input impedance also simplify direct connection to current shunts and bridge sensors.
When designing with this part, allocate sufficient PCB copper under the exposed pad (EP) for thermal dissipation — at least 1 square inch of inner/outer ground plane is recommended. Use 0.1 uF ceramic bypass capacitors within 3 mm of each supply pin and a 10 uF bulk capacitor on AVDD. For best SNR, route analog inputs as differential pairs away from digital switching lines.
This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes for the MAX11044BETN+T — engineering information not aggregated on any single distributor page.
直接替换替代料： MAX11044BETN+T ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MAX11044BETN+T （相同外形与封装尺寸） ——差异在于 Architecture, Number of Channels, Resolution.
快速对比工具——选择替代料号进行并排对比：
MAX11044ETN+
✅ 直接替换📋 参考替代料（不在目录中）
MAX11044BETN+
✅ 直接替换✓ 有现货
$17.95 / 个
查看数据手册 →MAX11054ETN+
✅ 直接替换📋 参考替代料（不在目录中）
MAX11056ETN+
✅ 直接替换📋 参考替代料（不在目录中）
MAX11044BETN+T 最大额定值与电气特性
| 分辨率 | 16 bit |
| Number of Channels | 4 |
| Architecture | SAR (Successive Approximation Register) |
| Sampling Rate (per channel) | 250 ksps |
| Conversion Time | 3 us |
| Input Type | Single-Ended / Differential |
| Number of ADCs | 4 (simultaneous sampling) |
| Analog Supply Voltage | 5 V |
| Digital Supply Voltage | 3 V to 5 V |
| Input Impedance | Up to 1 G ohm |
| Track-and-Hold | On-chip, one per channel |
| 接口 | Parallel, high-speed |
| 封装 / 外壳 | 56-TQFN (8 mm x 8 mm) Exposed Pad |
| 引脚数量 | 56 |
| 工作温度 | -40 to +85 C (Industrial) |
| 安装类型 | Surface Mount |
MAX11044BETN+T 引脚配置
| 引脚 1 | AIN1+ — Analog input channel 1 positive |
| 引脚 2 | AIN1- — Analog input channel 1 negative |
| 引脚 3 | AIN2+ — Analog input channel 2 positive |
| 引脚 4 | AIN2- — Analog input channel 2 negative |
| 引脚 5 | AIN3+ — Analog input channel 3 positive |
| 引脚 6 | AIN3- — Analog input channel 3 negative |
| 引脚 7 | AIN4+ — Analog input channel 4 positive |
| 引脚 8 | AIN4- — Analog input channel 4 negative |
| 引脚 9 | REF — Reference voltage input/output |
| 引脚 10 | REFGND — Reference ground |
| 引脚 11 | AVDD — Analog supply 5V |
| 引脚 12 | AGND — Analog ground |
| 引脚 13 | AGND — Analog ground |
| 引脚 14 | AVDD — Analog supply 5V |
| 引脚 15 | CONVST — Conversion start input |
| 引脚 16 | EOC — End-of-conversion output |
| 引脚 17 | D15 — Digital data output MSB |
| 引脚 18 | D14 — Digital data output |
| 引脚 19 | D13 — Digital data output |
| 引脚 20 | D12 — Digital data output |
| 引脚 21 | D11 — Digital data output |
| 引脚 22 | D10 — Digital data output |
| 引脚 23 | D9 — Digital data output |
| 引脚 24 | D8 — Digital data output |
| 引脚 25 | D7 — Digital data output |
| 引脚 26 | D6 — Digital data output |
| 引脚 27 | D5 — Digital data output |
| 引脚 28 | D4 — Digital data output |
| 引脚 29 | D3 — Digital data output |
| 引脚 30 | D2 — Digital data output |
| 引脚 31 | D1 — Digital data output |
| 引脚 32 | D0 — Digital data output LSB |
| 引脚 33 | DVDD — Digital supply 3V to 5V |
| 引脚 34 | DGND — Digital ground |
| 引脚 35 | /RD — Read strobe input (active low) |
| 引脚 36 | /CS — Chip select input (active low) |
| 引脚 37 | INT — Interrupt / overrange output |
| 引脚 38 | NC — Not connected (per datasheet) |
| 引脚 39 | NC — Not connected (per datasheet) |
| 引脚 40 | NC — Not connected (per datasheet) |
| 引脚 41 | AGND — Analog ground |
| 引脚 42 | AVDD — Analog supply 5V |
| 引脚 43 | AGND — Analog ground |
| 引脚 44 | AVDD — Analog supply 5V |
| 引脚 45 | AGND — Analog ground |
| 引脚 46 | AVDD — Analog supply 5V |
| 引脚 47 | AGND — Analog ground |
| 引脚 48 | AVDD — Analog supply 5V |
| 引脚 49 | NC — Not connected (per datasheet) |
| 引脚 50 | NC — Not connected (per datasheet) |
| 引脚 51 | NC — Not connected (per datasheet) |
| 引脚 52 | NC — Not connected (per datasheet) |
| 引脚 53 | NC — Not connected (per datasheet) |
| 引脚 54 | NC — Not connected (per datasheet) |
| 引脚 55 | NC — Not connected (per datasheet) |
| 引脚 56 | NC — Not connected (per datasheet) |
典型应用
MAX11044BETN+T 适用于 7 应用s: Three-Phase Power Monitoring, Multi-Axis Motor Control, Vibration and Acoustic Analysis, Industrial Data Acquisition Systems, Medical Patient Monitoring, Power-Line Fault Recorders, Automotive Sensor Array Digitization.
Three-Phase Power Monitoring
The MAX11044BETN+T's 4-channel simultaneous-sampling SAR architecture is purpose-built for three-phase power monitoring where voltage and current of each phase must be captured at the same instant. The per-channel track-and-hold eliminates inter-channel phase skew that would otherwise corrupt real-power calculation, and the 16-bit resolution with 84 dB SINAD is sufficient to resolve harmonics up to the 50th harmonic of 50/60 Hz line frequency. The high-impedance inputs accept direct connection to current-transformer burden resistors and voltage-divider networks without external buffering. Power-metering firmware reads all four channels via the parallel interface after a single CONVST edge, achieving aggregate 1 MSPS throughput to capture transients.
推荐
Multi-Axis Motor Control
In multi-axis motor control, current and position feedback from each axis must be sampled synchronously to maintain field-oriented control (FOC) accuracy. The MAX11044BETN+T samples four feedback channels at exactly the same instant with 250 ksps per channel, so all FOC math runs on phase-aligned data without the interpolation errors that plague multiplexed ADCs. The 3 us conversion time gives the control loop enough bandwidth for high-RPM servo drives, while the 5 V analog supply and differential inputs simplify connection to shunt resistors and LEM-type current transducers. The 56-TQFN exposed-pad package dissipates heat reliably under continuous conversion at full throughput.
推荐
Vibration and Acoustic Analysis
Vibration and acoustic analysis requires capturing multiple sensor channels at precisely the same moment to preserve cross-channel phase relationships used for modal analysis, beamforming, and source localization. The MAX11044BETN+T's per-channel T/H stages guarantee zero inter-channel skew, while 16-bit resolution and 250 ksps per-channel throughput comfortably support vibration bandwidths up to 100 kHz per the Nyquist criterion. The high 1 G ohm input impedance simplifies direct connection to ICP-type piezoelectric accelerometers and microphone preamplifier outputs. The parallel data output stream allows connection to an FPGA or DSP for real-time FFT processing without serial-interface bottlenecks.
推荐
Industrial Data Acquisition Systems
Industrial data-acquisition (DAQ) systems digitize multiple analog signals from sensors, transducers, and process controls into a host controller. The MAX11044BETN+T provides four simultaneously-sampled 16-bit channels with 250 ksps per-channel throughput, satisfying most multi-sensor industrial monitoring requirements including strain-gauge bridges, thermocouples via front-end amplifiers, and 4-20 mA loop receivers. The high input impedance reduces loading error on high-output-impedance sensors, while the parallel digital interface integrates cleanly with microcontrollers, DSPs, and FPGAs in PLC and SCADA front-ends. Industrial -40 C to +85 C temperature grade ensures reliable operation in factory-floor environments.
推荐
Medical Patient Monitoring
Medical patient monitoring equipment — including multi-lead ECG, pulse-oximeter arrays, and invasive blood-pressure channels — must sample multiple physiological signals synchronously to preserve diagnostic timing relationships. The MAX11044BETN+T provides 4-channel simultaneous sampling at 16-bit resolution and 250 ksps per channel, easily capturing ECG bandwidths (typically 0.05 Hz to 150 Hz) with substantial oversampling margin. The low channel-to-channel skew from the per-channel T/H architecture ensures accurate ST-segment measurements in multi-lead ECG, while the high input impedance allows direct connection to instrumentation-amp outputs. The exposed-pad 56-TQFN package simplifies thermal management in compact bedside monitors.
推荐
Power-Line Fault Recorders
Power-line fault recorders (digital fault recorders, DFRs) must capture transient waveforms on multiple phases simultaneously to reconstruct fault events and support post-event analysis. The MAX11044BETN+T's 4-channel simultaneous sampling at 250 ksps per channel provides sufficient bandwidth to record 50/60 Hz fundamental plus harmonics and switching transients on three-phase systems, with one channel reserved for neutral current or trigger input. The 16-bit dynamic range captures both nominal and fault-current magnitudes without autoranging, while the parallel interface supports real-time streaming to an FPGA-based event recorder. The exposed-pad 56-TQFN package ensures reliable operation across the industrial -40 C to +85 C temperature range in outdoor substation cabinets.
推荐
Automotive Sensor Array Digitization
Automotive sensor arrays combine multiple pressure, position, and temperature sensors feeding electronic control units. The MAX11044BETN+T's 4-channel simultaneous sampling captures synchronized readings from multiple automotive sensors, eliminating skew-induced errors in ECU control loops. The high input impedance and differential inputs simplify connection to Wheatstone-bridge pressure sensors and thermocouple interfaces. While the standard MAX11044BETN+T is industrial-grade (-40 C to +85 C), the same silicon serves automotive applications requiring under-hood thermal performance. The 56-TQFN (8x8) package with exposed pad provides robust mechanical and thermal connection for automotive PCB environments.
推荐
推荐产品汇总
工程参考数据： MAX11044BETN+T ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MAX11044ETN+ | MAX11044BETN+ | MAX11054ETN+ | MAX11056ETN+ |
|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 56-TQFN (8x8) | 56-TQFN (8x8) - same | 56-TQFN (8x8) - same | 56-TQFN (8x8) - same | 56-TQFN (8x8) - same |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Number of Channels | 4 | 4 | 4 | 6 | 8 |
| Sampling Rate (per channel) | 250 ksps | 250 ksps | 250 ksps | 250 ksps | 250 ksps |
| Architecture | SAR | SAR | SAR | SAR | SAR |
| Analog Supply | 5 V | 5 V | 5 V | 5 V | 5 V |
关键差异点
- Per-channel track-and-hold eliminates inter-channel phase skew （对比 MAX11054ETN+)
- Production B-revision silicon with proven datasheet characterization （对比 MAX11044ETN+)
- Channel-count scalability within one PCB footprint （对比 MAX11056ETN+)
设计说明
Solder the central exposed pad of the 56-TQFN package to a contiguous ground-copper pour with at least 1 square inch of copper area. Use multiple thermal vias (recommended 9 vias in a 3x3 array, 0.3 mm drill, 0.6 mm pad) directly under the EP to provide a low thermal-impedance path to internal ground planes. Insufficient EP soldering is the leading cause of thermal-shutdown and parametric-shift failures in this package family.
Place 0.1 uF X7R ceramic bypass capacitors within 3 mm of every AVDD and DVDD pin, plus a single 10 uF X5R bulk capacitor on AVDD. Keep analog and digital ground returns separated at the IC, joining them only at the exposed-pad ground pour. This star-grounding approach preserves the 84 dB SINAD specification by preventing digital switching noise from coupling into the analog input paths through the supply rails.
Route the four analog input pairs (AIN1+/- through AIN4+/-) as matched-length differential traces on a dedicated inner layer, with ground pours on both sides. Keep digital data lines (D0-D15, /RD, /CS, CONVST, EOC) physically separated from analog traces by at least 3 mm or by a ground guard trace. The parallel digital bus transitions at high edge rates — without proper routing it can inject noise into the analog input through stray capacitance.
The parallel digital interface can generate significant SSO (simultaneous-switching-output) noise when all 16 data bits transition simultaneously at high throughput. If noise on analog inputs rises during read cycles, add small series resistors (22-33 ohm) in the D0-D15 lines near the ADC to dampen the edge rate, and verify that the host-side bus capacitance does not exceed the datasheet's specified load limit.
Do not operate the MAX11044BETN+T without a valid reference voltage — leave REF pin floating only if the internal reference is explicitly enabled per the datasheet. Ensure the analog input common-mode voltage stays within the datasheet's specified range; rail-to-rail operation is NOT supported. Finally, observe the maximum throughput rating of 250 ksps per channel — exceeding this rate degrades linearity and SINAD.
合规信息
RoHS, REACH, and halogen-free status not explicitly published in the provided Verified Web Data; lead-free is implied by the +T packaging suffix indicating lead-free matte-tin plating. The MAX11044BETN+T is not AEC-Q100 qualified; it is industrial-grade (-40 C to +85 C). For AEC-Q100 qualified simultaneous-sampling parts, consider ADI's automotive-grade portfolio.
