MAX11960ETJ+ - 20-Bit 1Msps Dual SAR ADC | Maxim Integrated
MPN: MAX11960ETJ+ ⚠ Lần mua cuốiMAX11960ETJ+ Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MAX11960ETJ+ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MAX11960ETJ+ (cùng hình factor và footprint) — khác nhau ở Architecture, Number of Channels, Package.
MAX11960ETJ+T
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX11960ETJ/V+
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MAX11960ETJ+ Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 20 bit |
| Tỷ lệ lấy mẫu | 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 |
| Nhiệt độ hoạt động | -40C to +85C |
| Hộp | 32-pin TQFN (5x5 mm) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân MAX11960ETJ+
| Chân 1 | IN0P — Differential analog input 0, positive |
| Chân 2 | IN0N — Differential analog input 0, negative |
| Chân 3 | AVDD — Analog supply voltage |
| Chân 4 | GND — Analog ground |
| Chân 5 | REF — Reference voltage bypass |
| Chân 6 | REFGND — Reference ground |
| Chân 7 | IN1P — Differential analog input 1, positive |
| Chân 8 | IN1N — Differential analog input 1, negative |
| Chân 9 | AVDD — Analog supply voltage |
| Chân 10 | GND — Analog ground |
| Chân 11 | REFOUT — Internal reference output |
| Chân 12 | AVDD — Analog supply voltage |
| Chân 13 | GND — Analog ground |
| Chân 14 | OVDD — Digital I/O supply |
| Chân 15 | OGND — Digital I/O ground |
| Chân 16 | GND — Analog ground |
| Chân 17 | DVDD — Digital core supply |
| Chân 18 | DGND — Digital core ground |
| Chân 19 | DOUT — Serial data output |
| Chân 20 | SCLK — Serial clock input |
| Chân 21 | CSB — Active-low chip select |
| Chân 22 | CNVST — Conversion start input |
| Chân 23 | NC — Not connected |
| Chân 24 | NC — Not connected |
| Chân 25 | AVDD — Analog supply voltage |
| Chân 26 | GND — Analog ground |
| Chân 27 | NC — Not connected |
| Chân 28 | NC — Not connected |
| Chân 29 | AVDD — Analog supply voltage |
| Chân 30 | GND — Analog ground |
| Chân 31 | REFIN — Reference input (bypass) |
| Chân 32 | REFGND — Reference ground |
Ứng dụng tiêu biểu
MAX11960ETJ+ phù hợp cho 7 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX11960ETJ+ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Dual simultaneous-sampling differential inputs in a compact TQFN-32 package (vsMAX11058ECB+T)
- Integrated reference buffer and internal oscillator (vsGeneric external-reference SAR ADCs)
- AEC-Q100 qualified drop-in variant available (MAX11960ETJ/V+) (vsNon-automotive-only competitors)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS and REACH compliant per Maxim Integrated product page. AEC-Q100 qualification available via MAX11960ETJ/V+ variant only.
