MAX11960ETJ+ - 20-Bit 1Msps Dual SAR ADC | Maxim Integrated
部品番号: MAX11960ETJ+ ⚠ ラストタイムバイ| 数量 | 単価 | 小計 |
|---|---|---|
| 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+ 概要
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.
ドロップイン代替品: MAX11960ETJ+ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MAX11960ETJ+ （同一形状・フットプリント） — 相違点: Architecture, Number of Channels, Package.
クイック比較ツール — 並列比較する代替部品を選択:
MAX11960ETJ+T
✅ ドロップイン✓ 在庫あり
$11.85 / 個
データシートを見る →MAX11960ETJ/V+
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MAX11960ETJ+ 最大定格＆電気的特性
| 分解能 | 20 bit |
| サンプリングレート | 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 |
| 動作温度 | -40C to +85C |
| パッケージ | 32-pin TQFN (5x5 mm) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
MAX11960ETJ+ ピン構成
| ピン 1 | IN0P — Differential analog input 0, positive |
| ピン 2 | IN0N — Differential analog input 0, negative |
| ピン 3 | AVDD — Analog supply voltage |
| ピン 4 | GND — Analog ground |
| ピン 5 | REF — Reference voltage bypass |
| ピン 6 | REFGND — Reference ground |
| ピン 7 | IN1P — Differential analog input 1, positive |
| ピン 8 | IN1N — Differential analog input 1, negative |
| ピン 9 | AVDD — Analog supply voltage |
| ピン 10 | GND — Analog ground |
| ピン 11 | REFOUT — Internal reference output |
| ピン 12 | AVDD — Analog supply voltage |
| ピン 13 | GND — Analog ground |
| ピン 14 | OVDD — Digital I/O supply |
| ピン 15 | OGND — Digital I/O ground |
| ピン 16 | GND — Analog ground |
| ピン 17 | DVDD — Digital core supply |
| ピン 18 | DGND — Digital core ground |
| ピン 19 | DOUT — Serial data output |
| ピン 20 | SCLK — Serial clock input |
| ピン 21 | CSB — Active-low chip select |
| ピン 22 | CNVST — Conversion start input |
| ピン 23 | NC — Not connected |
| ピン 24 | NC — Not connected |
| ピン 25 | AVDD — Analog supply voltage |
| ピン 26 | GND — Analog ground |
| ピン 27 | NC — Not connected |
| ピン 28 | NC — Not connected |
| ピン 29 | AVDD — Analog supply voltage |
| ピン 30 | GND — Analog ground |
| ピン 31 | REFIN — Reference input (bypass) |
| ピン 32 | REFGND — Reference ground |
主な用途
MAX11960ETJ+ の用途: 7 件s: 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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MAX11960ETJ+ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- Dual simultaneous-sampling differential inputs in a compact TQFN-32 package （vs MAX11058ECB+T)
- Integrated reference buffer and internal oscillator （vs Generic external-reference SAR ADCs)
- AEC-Q100 qualified drop-in variant available (MAX11960ETJ/V+) （vs Non-automotive-only competitors)
設計ノート
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.
コンプライアンス情報
RoHS and REACH compliant per Maxim Integrated product page. AEC-Q100 qualification available via MAX11960ETJ/V+ variant only.
