MAX116EAX+T - 12-Bit 116ksps 8-Ch Simultaneous-Sampling ADC | Maxim
MPN: MAX116EAX+T ✓ פעילMAX116EAX+T סקירה
A successive-approximation ADC (SAR ADC) is a type of analog-to-digital converter that uses a comparator and a binary-weighted DAC to step through bit decisions, one per conversion cycle, delivering accurate 12-bit conversions in a fixed number of cycles. SAR ADCs sit within the data-converter hierarchy alongside delta-sigma and pipeline ADCs, and they are favored in multi-channel industrial systems where deterministic latency and simultaneous sampling are required. The MAX116EAX+T occupies the data-acquisition-system sub-category, which combines an ADC with front-end signal conditioning in a single chip.
Key specifications include a maximum throughput of 390 ksps for one channel, 218 ksps for two channels, 152 ksps for three channels, and 116 ksps for four channels, an 8 single-ended / 4 differential analog input configuration via two 4-channel muxes, a 2us conversion time per channel, and an operating temperature range of -40C to +85C. The internal +2.5V reference is trimmed to within 1.5% and can be overdriven with an external reference for gain or absolute-accuracy adjustments. The device draws a low supply current, supports a single +5V analog supply plus a +5V digital supply, and provides a high-impedance analog input stage.
Architecture-wise, the four simultaneous-sampling T/H amplifiers let the user acquire four analog inputs at one instant, then convert them sequentially through the shared 12-bit SAR ADC without losing phase relationships. This is critical in three-phase power monitoring, vibration analysis, and motor-control applications where misalignment between channel samples would corrupt the result. The buffered reference input rejects reference-noise coupling from external loads.
Typical applications include three-phase motor control and power-line monitoring, multi-axis vibration and motion analysis, industrial process control, data loggers, and instrumentation. The 36-pin SSOP package provides a compact footprint for dense multi-channel boards. When designing with this part, ensure the analog and digital supplies are well decoupled and that the input MUX bandwidth exceeds the input signal bandwidth to preserve settling accuracy.
חלופות תחליף ישיר עבור MAX116EAX+T — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם MAX116EAX+T (אותו גורם צורה וטביעת רגל) — שונים ב Number of Channels, Package, Resolution, RoHS Status, Conversion Architecture.
MAX115EAX+T
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MAX116EAX+
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MAX116EAX
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MAX116EAX-T
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MAX116EAX+T דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 12 bits |
| Architecture | Successive Approximation (SAR) |
| Number of Channels | 8 single-ended / 4 differential (2 muxes x 4 inputs) |
| Conversion Time | 2 us per channel |
| Maximum Throughput (1 channel) | 390 ksps |
| Maximum Throughput (2 channels) | 218 ksps |
| Maximum Throughput (3 channels) | 152 ksps |
| Maximum Throughput (4 channels) | 116 ksps |
| Sample Rate | 116 kSamples/sec |
| Internal Reference Voltage | +2.5 V |
| Reference Input | Buffered, internal or external |
| Track-and-Hold Amplifiers | 4 simultaneous-sampling |
| Analog Supply Voltage | +5 V |
| Digital Supply Voltage | +5 V |
| טווח טמפרטורת פעולה | -40C to +85C |
| Temperature Grade | Industrial |
| מארז | SSOP-36 (0.300 inch, 0.80 mm pitch) |
| סוג הרכבה | Surface Mount |
| Terminal Form | Gull Wing |
| Number of Terminals | 36 |
| סטטוס RoHS | Compliant (lead-free +T suffix) |
| Packaging | Tape & Reel (T suffix) |
תצורת פינים של MAX116EAX+T
| פין 1 | AIN1 — Analog input channel 1 |
| פין 2 | AIN2 — Analog input channel 2 |
| פין 3 | AIN3 — Analog input channel 3 |
| פין 4 | AIN4 — Analog input channel 4 |
| פין 5 | AIN5 — Analog input channel 5 |
| פין 6 | AIN6 — Analog input channel 6 |
| פין 7 | AIN7 — Analog input channel 7 |
| פין 8 | AIN8 — Analog input channel 8 |
| פין 9 | AGND — Analog ground |
| פין 10 | REF — Reference voltage input/output (+2.5V) |
| פין 11 | REFBUF — Buffered reference output |
| פין 12 | AVDD — Analog +5V supply |
| פין 13 | AGND — Analog ground |
| פין 14 | T/H1 — Track/Hold 1 output |
| פין 15 | T/H2 — Track/Hold 2 output |
| פין 16 | T/H3 — Track/Hold 3 output |
| פין 17 | T/H4 — Track/Hold 4 output |
| פין 18 | CS — Chip select (active low) |
| פין 19 | RD — Read strobe (active low) |
| פין 20 | WR — Write strobe (active low) |
| פין 21 | D0 — Data bit 0 (LSB) |
| פין 22 | D1 — Data bit 1 |
| פין 23 | D2 — Data bit 2 |
| פין 24 | D3 — Data bit 3 |
| פין 25 | D4 — Data bit 4 |
| פין 26 | D5 — Data bit 5 |
| פין 27 | D6 — Data bit 6 |
| פין 28 | D7 — Data bit 7 |
| פין 29 | D8 — Data bit 8 |
| פין 30 | D9 — Data bit 9 |
| פין 31 | D10 — Data bit 10 |
| פין 32 | D11 — Data bit 11 (MSB) |
| פין 33 | DVDD — Digital +5V supply |
| פין 34 | DGND — Digital ground |
| פין 35 | INT — Conversion interrupt output |
| פין 36 | MODE — Mode select input |
יישומים טיפוסיים
MAX116EAX+T מתאים עבור 6 יישוםs: Three-Phase Power Monitoring, Multi-Axis Vibration Analysis, Industrial Process Control, Data Logger Systems, Motor Control Feedback, Instrumentation and Test Equipment.
Three-Phase Power Monitoring
The MAX116EAX+T's four simultaneous-sampling track-and-hold amplifiers make it ideal for three-phase voltage and current acquisition where the relative timing between phase samples must be preserved. Three-phase monitoring applications typically require sampling all phase signals within a few hundred nanoseconds of each other, then converting them sequentially at up to 116 ksps aggregate. The integrated 4-channel T/H stage eliminates the channel-to-channel skew that a single-channel ADC plus external MUX would introduce, while the 12-bit resolution is sufficient for power-quality harmonic analysis up to the 31st harmonic at 50/60 Hz line frequencies.
מומלץ
Multi-Axis Vibration Analysis
For vibration and modal analysis on multi-axis accelerometers, the MAX116EAX+T captures all axes within the same acquisition window, preserving phase information that is essential for modal-shape reconstruction. The 116 ksps 4-channel aggregate rate provides adequate Nyquist headroom for vibration spectra up to ~20 kHz across four axes. The buffered +2.5V internal reference rejects supply-pumpback noise from the charge-redistribution SAR DAC, while the 5V analog/digital supply split minimizes digital switching noise coupling into the analog input stage during simultaneous conversions.
מומלץ
Industrial Process Control
Process-control loops often need to monitor multiple sensors - flow, pressure, temperature, level - with deterministic latency and known channel-to-channel phase relationships. The MAX116EAX+T provides 8 single-ended or 4 differential inputs via two 4-channel muxes, allowing flexible sensor routing without external signal conditioning. Its 12-bit resolution and 2us conversion per channel deliver control-loop bandwidth suitable for PLCs and DCS front ends, while the SSOP-36 package keeps the analog front end compact on the controller PCB.
מומלץ
Data Logger Systems
Portable and bench-top data loggers benefit from the MAX116EAX+T's integrated 4-channel simultaneous sampling, internal +2.5V reference, and 5V single-supply operation. The simultaneous-sampling T/H architecture captures correlated events across channels at the same instant, which is critical when logging transient phenomena such as battery-pack cell voltages during a load pulse or strain-gauge pairs during a mechanical event. The 116 ksps 4-channel throughput supports logging bandwidths up to ~20 kHz across four channels, and the SSOP-36 footprint is friendly to compact handheld enclosures.
מומלץ
Motor Control Feedback
Field-oriented control (FOC) of three-phase motors requires sampling the phase currents and DC-bus voltage at the same switching instant to compute the Park/Clarke transforms accurately. The MAX116EAX+T's four simultaneous T/H amplifiers sample all three phase currents plus the bus voltage within nanoseconds of each other, while the 116 ksps aggregate throughput supports PWM frequencies up to ~15 kHz with adequate oversampling. The 12-bit resolution is sufficient for torque-ripple analysis and over-current protection thresholds.
מומלץ
Instrumentation and Test Equipment
Test instruments such as oscilloscope front ends, spectrum-analyzer IF digitizers, and bench multimeters often need simultaneous sampling across multiple input ranges or probe pairs. The MAX116EAX+T provides the simultaneous-sampling capability and the 12-bit/116 ksps performance required for mid-bandwidth instrumentation. The buffered internal reference and 5V analog/digital supply split simplify board design, and the SSOP-36 package offers a manageable footprint for dense front-end PCBs with multiple input stages.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור MAX116EAX+T — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | MAX115EAX+T | MAX116EAX+ | MAX116EAX |
|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | SSOP-36 | SSOP-36 - same | SSOP-36 - same | SSOP-36 - same |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits |
| Max Throughput (4 channels) | 116 ksps | 115 ksps (-1%) | 116 ksps (same) | 116 ksps (same) |
| Simultaneous-Sampling T/H | 4 channels | 4 channels | 4 channels | 4 channels |
| Internal Reference | +2.5V | +2.5V | +2.5V | +2.5V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Packaging Format | Tape & Reel (lead-free) | Tape & Reel (lead-free) | Tube (lead-free) | Tube |
מבדילים עיקריים
- Integrated 4-channel simultaneous-sampling T/H front end (לעומתMAX174AEWI+T)
- Internal +2.5V reference with buffered output (לעומתMAX174AEWI+T)
- 8 single-ended / 4 differential input flexibility (לעומתMAX174AEWI+T)
הערות תכנון
The MAX116EAX+T requires separate analog and digital +5V supplies (AVDD and DVDD). Tie AGND and DGND together at a single point near the IC to avoid digital switching noise coupling into the analog front end. Place 0.1uF ceramic decoupling capacitors as close as possible to each supply pin, and add a 10uF tantalum bulk capacitor on each supply rail for low-frequency noise suppression. The internal +2.5V reference draws current during conversion, so isolate it from digital switching with a star-ground topology.
Route the 12-bit parallel data bus away from the analog input traces to prevent digital-to-analog coupling through the package substrate. Place the IC on a layer with a continuous ground plane directly underneath, and use guard traces around the analog input pins. The simultaneous-sampling T/H architecture is sensitive to ground bounce - keep the analog MUX inputs short and avoid running high-current traces near the analog input pins.
Do not assume the MAX116EAX+T is a single-channel ADC - it is a data-acquisition system with 4 simultaneous T/H amplifiers and 2 muxes. Channel configuration (single-ended vs differential, channel count) is software-controlled via the parallel interface. Also note that the +T suffix denotes tape-and-reel lead-free packaging, not a silicon revision - the bare MAX116EAX and MAX116EAX+ are drop-in compatible. The conversion interrupt pin (INT) signals end-of-conversion; do not poll the data bus without checking INT or you risk reading stale conversion data.
The 12-bit parallel interface runs at up to 116 ksps aggregate - at 1 MHz read strobe bursts, the data bus edges generate significant switching noise. Add 33-ohm source-series resistors on the data lines near the IC to dampen transmission-line ringing, and keep the data bus short (a few inches maximum). If the data bus must extend off-board, add a buffer or use a ribbon cable with ground-signal-ground pattern.
מידע על תאימות
Lead-free per +T suffix marking. Industrial temperature grade - not AEC-Q100 qualified. RoHS and REACH compliance per Maxim Integrated product declarations.
