MAX116EAX+T - 12-Bit 116ksps 8-Ch Simultaneous-Sampling ADC | Maxim
N.º da peça: MAX116EAX+T ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $14.85 | $14,85 |
| 10 | $13.42 | $134,20 |
| 100 | $11.78 | $1.178,00 |
| 500 | $10.55 | $5.275,00 |
| 1.000 | $9.62 | $9.620,00 |
MAX116EAX+T Visão geral
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.
Alternativas drop-in para MAX116EAX+T — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MAX116EAX+T (mesmo formato e footprint) — diferindo em Number of Channels, Package, Resolution, RoHS Status, Conversion Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MAX115EAX+T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX116EAX+
✅ Drop-In✓ Em estoque
$18.25 / unidade
Ver ficha técnica →MAX116EAX
✅ Drop-In✓ Em estoque
$14.5 / unidade
Ver ficha técnica →MAX116EAX-T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX116EAX+T Classificações máximas e características elétricas
| Resolução | 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 |
| Faixa de temperatura de operação | -40C to +85C |
| Temperature Grade | Industrial |
| Encapsulamento | SSOP-36 (0.300 inch, 0.80 mm pitch) |
| Tipo de montagem | Surface Mount |
| Terminal Form | Gull Wing |
| Number of Terminals | 36 |
| Status RoHS | Compliant (lead-free +T suffix) |
| Packaging | Tape & Reel (T suffix) |
Configuração de pinos do MAX116EAX+T
| Pino 1 | AIN1 — Analog input channel 1 |
| Pino 2 | AIN2 — Analog input channel 2 |
| Pino 3 | AIN3 — Analog input channel 3 |
| Pino 4 | AIN4 — Analog input channel 4 |
| Pino 5 | AIN5 — Analog input channel 5 |
| Pino 6 | AIN6 — Analog input channel 6 |
| Pino 7 | AIN7 — Analog input channel 7 |
| Pino 8 | AIN8 — Analog input channel 8 |
| Pino 9 | AGND — Analog ground |
| Pino 10 | REF — Reference voltage input/output (+2.5V) |
| Pino 11 | REFBUF — Buffered reference output |
| Pino 12 | AVDD — Analog +5V supply |
| Pino 13 | AGND — Analog ground |
| Pino 14 | T/H1 — Track/Hold 1 output |
| Pino 15 | T/H2 — Track/Hold 2 output |
| Pino 16 | T/H3 — Track/Hold 3 output |
| Pino 17 | T/H4 — Track/Hold 4 output |
| Pino 18 | CS — Chip select (active low) |
| Pino 19 | RD — Read strobe (active low) |
| Pino 20 | WR — Write strobe (active low) |
| Pino 21 | D0 — Data bit 0 (LSB) |
| Pino 22 | D1 — Data bit 1 |
| Pino 23 | D2 — Data bit 2 |
| Pino 24 | D3 — Data bit 3 |
| Pino 25 | D4 — Data bit 4 |
| Pino 26 | D5 — Data bit 5 |
| Pino 27 | D6 — Data bit 6 |
| Pino 28 | D7 — Data bit 7 |
| Pino 29 | D8 — Data bit 8 |
| Pino 30 | D9 — Data bit 9 |
| Pino 31 | D10 — Data bit 10 |
| Pino 32 | D11 — Data bit 11 (MSB) |
| Pino 33 | DVDD — Digital +5V supply |
| Pino 34 | DGND — Digital ground |
| Pino 35 | INT — Conversion interrupt output |
| Pino 36 | MODE — Mode select input |
Aplicações típicas
MAX116EAX+T é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MAX116EAX+T — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Integrated 4-channel simultaneous-sampling T/H front end (vs MAX174AEWI+T)
- Internal +2.5V reference with buffered output (vs MAX174AEWI+T)
- 8 single-ended / 4 differential input flexibility (vs MAX174AEWI+T)
Notas de projeto
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.
Informações de conformidade
Lead-free per +T suffix marking. Industrial temperature grade - not AEC-Q100 qualified. RoHS and REACH compliance per Maxim Integrated product declarations.
