MAX11960ETJ+ - 20-Bit 1Msps Dual SAR ADC | Maxim Integrated
Артикул: MAX11960ETJ+ ⚠ Последняя закупка| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $14.5 | $14,50 |
| 10 | $12.95 | $129,50 |
| 100 | $11.2 | $1.120,00 |
| 500 | $9.85 | $4.925,00 |
| 1.000 | $8.4 | $8.400,00 |
MAX11960ETJ+ Обзор
A successive-approximation register (SAR) ADC is a type of Nyquist-rate data converter that resolves one bit per conversion cycle using a binary-weighted capacitor array and a comparator. The MAX11960's dual-channel, simultaneously-sampling architecture extends this principle by capturing two differential inputs at exactly the same instant, which is essential for phase-sensitive applications such as power-line monitoring, three-phase current/voltage sensing, and IQ baseband acquisition. SAR ADCs are preferred over sigma-delta types when deterministic latency and per-sample bandwidth matter, since conversion completes in a fixed number of cycles and outputs data immediately.
Key features of the MAX11960 include 20-bit resolution with no missing codes, 1 Msps per channel throughput, 92 dB SNR (typical) and 100 dB SFDR, SPI-/QSPI-/MICROWIRE-compatible serial interface, integrated reference buffer, internal low-drift reference, internal oscillator, and an operating temperature range of -40C to +85C. The wide supply range (1.7 V to 3.6 V) simplifies integration with 1.8 V, 2.5 V, and 3.3 V digital systems, while the small TQFN-32 footprint suits dense multi-channel data-acquisition boards.
The device is typically used in industrial process control, three-phase power metering, motor-control current sensing, vibration and acoustic analysis, medical instrumentation, and software-defined radio (SDR) baseband digitizers. Designers benefit from low power dissipation that scales with sampling rate, allowing energy-efficient designs in battery-operated measurement equipment.
Designers should observe the typical-application circuit in the Maxim datasheet, including a 10 uF bulk + 0.1 uF decoupling combination on AVDD/DVDD, common-mode input filtering, and short, impedance-controlled traces to the analog inputs. For best noise performance, place input RC anti-aliasing filters symmetrically on both differential pairs. The MAX11960 is specified for the industrial temperature range; for automotive deployments the AEC-Q100 qualified MAX11960ETJ/V+ should be considered.
This page synthesizes distributor pricing, drop-in compatible alternates sourced from the Maxim datasheet cross-reference, and practical layout notes that complement but do not duplicate the manufacturer datasheet.
For applications requiring a simultaneous-sampling, dual-channel SAR ADC with integrated reference and an industry-standard SPI interface, the MAX11960ETJ+ is a compact, production-ready solution.
Аналоги без доработки для MAX11960ETJ+ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с MAX11960ETJ+ (тот же форм-фактор и посадочное место) — отличается по Architecture, Number of Channels, Package.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
MAX11960ETJ+T
✅ Прямая замена✓ В наличии
$11.85 / шт.
Открыть даташит →MAX11960ETJ/V+
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
MAX11960ETJ+ Максимальные параметры и электрические характеристики
| Разрешение | 20 bit |
| Частота дискретизации | 1 MSPS |
| Number of Channels | 2 (dual, simultaneous sampling) |
| Input Type | Fully Differential |
| Architecture | SAR (Successive Approximation) |
| Supply Voltage (Analog/Digital) | 1.7 V to 3.6 V (single supply) |
| Reference | Internal (with integrated buffer) |
| Internal Oscillator | Yes (no external conversion clock required) |
| Serial Interface | SPI / QSPI / MICROWIRE-compatible |
| SNR (Typical) | 92 dB |
| SFDR (Typical) | 100 dB |
| Рабочая температура | -40C to +85C |
| Корпус | 32-pin TQFN (5x5 mm) |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
Конфигурация выводов MAX11960ETJ+
| Контакт 1 | IN0P — Differential analog input 0, positive |
| Контакт 2 | IN0N — Differential analog input 0, negative |
| Контакт 3 | AVDD — Analog supply voltage |
| Контакт 4 | GND — Analog ground |
| Контакт 5 | REF — Reference voltage bypass |
| Контакт 6 | REFGND — Reference ground |
| Контакт 7 | IN1P — Differential analog input 1, positive |
| Контакт 8 | IN1N — Differential analog input 1, negative |
| Контакт 9 | AVDD — Analog supply voltage |
| Контакт 10 | GND — Analog ground |
| Контакт 11 | REFOUT — Internal reference output |
| Контакт 12 | AVDD — Analog supply voltage |
| Контакт 13 | GND — Analog ground |
| Контакт 14 | OVDD — Digital I/O supply |
| Контакт 15 | OGND — Digital I/O ground |
| Контакт 16 | GND — Analog ground |
| Контакт 17 | DVDD — Digital core supply |
| Контакт 18 | DGND — Digital core ground |
| Контакт 19 | DOUT — Serial data output |
| Контакт 20 | SCLK — Serial clock input |
| Контакт 21 | CSB — Active-low chip select |
| Контакт 22 | CNVST — Conversion start input |
| Контакт 23 | NC — Not connected |
| Контакт 24 | NC — Not connected |
| Контакт 25 | AVDD — Analog supply voltage |
| Контакт 26 | GND — Analog ground |
| Контакт 27 | NC — Not connected |
| Контакт 28 | NC — Not connected |
| Контакт 29 | AVDD — Analog supply voltage |
| Контакт 30 | GND — Analog ground |
| Контакт 31 | REFIN — Reference input (bypass) |
| Контакт 32 | REFGND — Reference ground |
Типичное применение
MAX11960ETJ+ подходит для 7 применениеs: Three-Phase Power Metering, Motor Control Current Sensing, Industrial Process Control, Vibration and Acoustic Analysis, Medical Instrumentation, Software-Defined Radio Baseband, Data Acquisition Modules.
Three-Phase Power Metering
The MAX11960ETJ+ suits three-phase power metering because its dual simultaneous-sampling, fully differential inputs capture phase voltage and current at exactly the same instant, eliminating phase-mismatch errors that degrade active/reactive power calculation. With 20-bit resolution and 1 MSPS per channel, the device supports class 0.2/0.5 metering accuracy when paired with a 4-wire anti-aliasing filter and a precision shunt or CT. Integrated reference and oscillator reduce BOM, while the 1.7-3.6 V supply simplifies interfacing to low-power metrology MCUs over SPI. Compared with sigma-delta alternatives, the SAR architecture provides deterministic conversion latency critical for synchronous sampling across three phases.
Рекомендуется
Motor Control Current Sensing
For field-oriented control (FOC) of three-phase motors, the MAX11960ETJ+ simultaneously digitizes two motor phase currents (e.g., Ia and Ib) at 1 MSPS, enabling high-bandwidth current loops and accurate space-vector PWM control. The 92 dB SNR and 100 dB SFDR preserve dynamic range during high dI/dt switching events, while the fully differential input topology rejects common-mode switching noise injected by the inverter. The TQFN-32 footprint fits directly on small inverter control boards, and the SPI interface pairs naturally with Cortex-M motor-control MCUs running sensorless-FOC algorithms.
Рекомендуется
Industrial Process Control
In industrial process control, the MAX11960ETJ+ converts two sensor channels (e.g., pressure plus temperature, or flow plus density) into precise 20-bit digital codes for distributed control systems. The internal reference buffer maintains long-term gain accuracy across the -40C to +85C industrial range, while the single 1.7-3.6 V supply simplifies 4-20 mA loop-powered and 24 V backplane designs when paired with isolated signal conditioning. Deterministic SAR latency enables multiplexed control loops where update determinism matters more than dynamic range.
Рекомендуется
Vibration and Acoustic Analysis
The MAX11960ETJ+ supports two-channel vibration/acoustic data acquisition where phase alignment between sensors is essential - for example, modal analysis with two accelerometers or binaural microphone capture. Simultaneous sampling at 1 MSPS preserves phase information above 100 kHz, while 92 dB SNR keeps wide dynamic range available for low-amplitude vibration signatures. The integrated reference and oscillator keep phase noise minimal, supporting accurate FFT analysis in predictive-maintenance systems and acoustic emission testing.
Рекомендуется
Medical Instrumentation
In medical instrumentation such as patient monitors and infusion pumps, the MAX11960ETJ+ converts two precision analog channels (e.g., SpO2 plethysmograph plus respiration) into clean 20-bit data, providing diagnostic-grade resolution. Fully differential input topology rejects common-mode EMI from adjacent RF sources and switching power supplies in bedside equipment. Low power consumption scales with sample rate, supporting battery-powered portable medical devices operating from 1.8-3.6 V rails.
Рекомендуется
Software-Defined Radio Baseband
For software-defined radio (SDR) baseband digitization, the MAX11960ETJ+ provides dual simultaneous-sampling I/Q capture at 1 MSPS per channel, suitable for narrowband and low-IF receiver chains. The 100 dB SFDR preserves signal integrity in the presence of out-of-band blockers, while SPI/QSPI compatibility allows direct interfacing to FPGA or DSP baseband processors. Low-latency SAR conversion complements the deterministic timing required for digital downconversion pipelines.
Рекомендуется
Data Acquisition Modules
Compact multi-channel data acquisition modules benefit from the MAX11960ETJ+'s dual simultaneous-sampling architecture and small TQFN-32 footprint, allowing dense PCB layouts with minimal analog crosstalk. The integrated reference and oscillator reduce the bill of materials, while the SPI interface enables straightforward cascading of multiple MAX11960 devices over a shared bus for higher channel counts. Industrial temperature rating and 1.7-3.6 V supply compatibility support rugged instrumentation modules.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MAX11960ETJ+ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MAX11960ETJ+T | MAX11960ETJ/V+ |
|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated - same brand | Maxim Integrated - same brand |
| Package | 32-pin TQFN (5x5 mm) | 32-pin TQFN (5x5 mm) - same | 32-pin TQFN (5x5 mm) - same |
| Resolution | 20 bit | 20 bit | 20 bit |
| Sampling Rate | 1 MSPS | 1 MSPS | 1 MSPS |
| Channels | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) |
| Supply Voltage | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V |
| AEC-Q100 Qualified | No | No | Yes |
| Packaging Form | Tray | Tape & Reel | Tray or T&R (varies) |
| Lifecycle Status | Last Time Buy | Last Time Buy | Last Time Buy |
Ключевые отличия
- Dual simultaneous-sampling differential inputs in a compact TQFN-32 package (против MAX11058ECB+T)
- Integrated reference buffer and internal oscillator (против Generic external-reference SAR ADCs)
- AEC-Q100 qualified drop-in variant available (MAX11960ETJ/V+) (против Non-automotive-only competitors)
Заметки по проектированию
Decouple AVDD, DVDD, and OVDD separately using a 10 uF bulk + 0.1 uF ceramic combination placed within 5 mm of each supply pin. The MAX11960 has separate analog, digital-core, and digital-IO supplies; sharing the same ferrite bead across these supplies can couple switching noise into the analog front end, degrading SNR. Use a star-ground topology with a single tie point to chassis ground to avoid ground-loop-induced errors.
Route the fully differential input traces (IN0P/IN0N, IN1P/IN1N) symmetrically with matched length and width to preserve common-mode rejection above 1 MHz. Place the anti-aliasing RC network (typically 100 ohm + 1 nF, giving a 1.6 MHz cutoff) as close as possible to the input pins, and use a quiet ground plane dedicated to the analog section. Keep digital SPI traces routed away from the analog inputs to avoid digital-noise coupling into the front end.
Avoid applying a common-mode voltage outside the AVDD - 0.3 V to AVDD + 0.3 V range on the differential inputs during start-up; the integrated reference buffer may not have settled, leading to input-current transients and potential damage. Sequence AVDD before applying input signals, and hold CNVST low until supplies have stabilized. Do not exceed the absolute maximum ratings on REFIN, as the reference pin is sensitive to latch-up under reverse-bias conditions.
Информация о соответствии
RoHS and REACH compliant per Maxim Integrated product page. AEC-Q100 qualification available via MAX11960ETJ/V+ variant only.
