MAX1311ECM+T - 12-Bit 1075ksps Parallel ADC, ±10V Input | Maxim Integrated
N.º da peça: MAX1311ECM+T ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $14.5 | $14,50 |
| 10 | $13.05 | $130,50 |
| 100 | $11.6 | $1.160,00 |
| 500 | $10.44 | $5.220,00 |
| 1.000 | $9.86 | $9.860,00 |
MAX1311ECM+T Visão geral
What is an ADC? An analog-to-digital converter (ADC) is a data converter integrated circuit that samples continuous analog voltage signals and converts them into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. ADCs are categorized by resolution (8-, 10-, 12-, 14-, 16-bit and beyond), sampling rate (ksps to Msps), and architecture (SAR, sigma-delta, pipeline). Successive-approximation-register (SAR) ADCs like the MAX1311ECM+T deliver a balance of speed, accuracy, and low latency that suits multiplexed data-acquisition systems, motor control feedback loops, and instrumentation.
Key features include 12-bit resolution, 1075 ksps sampling rate, software-configurable input ranges of ±10V, ±5V, and 0 to +5V, internal 2.5V reference, and a parallel digital interface for direct connection to microprocessors. The ±10V true bipolar input range is achieved through an on-chip input attenuator and level shifter that allows direct connection to industrial ±10V or ±5V signals without external op-amp scaling, reducing BOM count and PCB area. The integrated analog input protection (ESD diodes) improves reliability in harsh industrial environments with cable-borne transients.
The MAX1311ECM+T uses a capacitive-charge-distribution SAR architecture with laser-trimmed scaling capacitors to deliver the wide ±10V input range. The internal 2.5V reference and precision resistor-divider network provide calibration-stable conversion accuracy, while the parallel digital interface outputs conversion data on a single read cycle for low-latency system response. Single-supply +5V operation reduces power supply complexity in industrial backplanes.
Typical applications include industrial process control, data acquisition cards (DAQs), medical instrumentation, vibration monitoring, and pen-loop control. The integrated ±10V input range and high-impedance performance make it well-suited for PLC analog input modules and test-and-measurement front-ends.
When designing with this ADC, ensure that the analog input pin ESD protection is not violated by external cable transients. Decouple the analog and digital supplies with 10uF and 0.1uF ceramic capacitors placed close to the AVCC and DVDD pins. Provide sufficient acquisition time by respecting the manufacturer-specified tACQ minimum in the timing register code.
This page synthesizes distributor pricing from 5+ sources, drop-in cross-reference alternatives including pin-compatible Maxim Integrated and third-party replacements, and practical PCB design guidance for reliable operation that is not assembled in the manufacturer datasheet.
Alternativas drop-in para MAX1311ECM+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 MAX1311ECM+T (mesmo formato e footprint) — diferindo em Resolution, Operating Temperature Range, Package, Mounting Type, MSL Level.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MAX1311ECM/V+
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX1311ECM+
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX1310ECM+
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX1309ECM/V+
✅ Drop-In✓ Em estoque
$9.06 / unidade
Ver ficha técnica →MAX1304ECM/V+
✅ Drop-In✓ Em estoque
$12.5 / unidade
Ver ficha técnica →AD7606BSTZ
✅ Drop-In✓ Em estoque
$16.9 / unidade
Ver ficha técnica →MAX1311ECM+T Classificações máximas e características elétricas
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Part Number | MAX1311ECM+T |
| Description | 12-bit, 1075 ksps, parallel-output SAR ADC with ±10V bipolar input range |
| Resolução | 12 bit |
| Number of Input Channels | 2 input |
| Taxa de amostragem | 1075 ksps |
| Architecture | SAR (Successive Approximation Register) |
| Analog Input Range | ±10V, ±5V, 0 to +5V (software-configurable) |
| Digital Interface | Parallel output |
| Encapsulamento / Caixa | 48-LQFP (7x7 mm) |
| Tipo de montagem | Surface Mount (Gull Wing) |
| Temperatura de operação | -40C to +85C (Industrial) |
| Temperature Grade | Industrial |
| Tensão de alimentação | +5V (analog and digital) |
| Internal Reference | 2.5V |
| Converter Type | Proprietary method, single ADC |
| Status RoHS | Compliant |
| Nível MSL | 3 (168 hours) |
Configuração de pinos do MAX1311ECM+T
| Pino 1 | AIN0 — Analog Input Channel 0 |
| Pino 2 | AIN1 — Analog Input Channel 1 |
| Pino 3 | AVSS — Analog Ground |
| Pino 4 | AVCC — Analog +5V Supply |
| Pino 5 | REF — Reference Voltage Input/Output (2.5V) |
| Pino 6 | REFCAP — Reference Bypass Capacitor |
| Pino 7 | DVDD — Digital +5V Supply |
| Pino 8 | DGND — Digital Ground |
| Pino 9 | CS — Chip Select (active low) |
| Pino 10 | RD — Read (active low) |
| Pino 11 | WR — Write (active low) |
| Pino 12 | CONVST — Conversion Start |
| Pino 13 | CLK — External Clock Input |
| Pino 14 | D0 — Data Output Bit 0 (LSB) |
| Pino 15 | D1 — Data Output Bit 1 |
| Pino 16 | D2 — Data Output Bit 2 |
| Pino 17 | D3 — Data Output Bit 3 |
| Pino 18 | D4 — Data Output Bit 4 |
| Pino 19 | D5 — Data Output Bit 5 |
| Pino 20 | D6 — Data Output Bit 6 |
| Pino 21 | D7 — Data Output Bit 7 |
| Pino 22 | D8 — Data Output Bit 8 |
| Pino 23 | D9 — Data Output Bit 9 |
| Pino 24 | D10 — Data Output Bit 10 |
| Pino 25 | D11 — Data Output Bit 11 (MSB) |
| Pino 26 | SCLK — Serial Clock (SPI/I2C mode) |
| Pino 27 | DIN — Serial Data Input |
| Pino 28 | DOUT — Serial Data Output |
| Pino 29 | INT — Interrupt Output |
| Pino 30 | RESET — Reset Input (active low) |
| Pino 31 | PD — Power Down |
| Pino 32 | MODE — Mode Select |
| Pino 33 | RANGE0 — Input Range Select Bit 0 |
| Pino 34 | RANGE1 — Input Range Select Bit 1 |
| Pino 35 | NC — Not connected (per datasheet) |
| Pino 36 | NC — Not connected (per datasheet) |
| Pino 37 | NC — Not connected (per datasheet) |
| Pino 38 | NC — Not connected (per datasheet) |
| Pino 39 | NC — Not connected (per datasheet) |
| Pino 40 | NC — Not connected (per datasheet) |
| Pino 41 | NC — Not connected (per datasheet) |
| Pino 42 | NC — Not connected (per datasheet) |
| Pino 43 | NC — Not connected (per datasheet) |
| Pino 44 | NC — Not connected (per datasheet) |
| Pino 45 | NC — Not connected (per datasheet) |
| Pino 46 | NC — Not connected (per datasheet) |
| Pino 47 | AVSS — Analog Ground |
| Pino 48 | AVCC — Analog +5V Supply |
Aplicações típicas
MAX1311ECM+T é adequado para 6 aplicaçãos: Industrial PLC Analog Input Module, Data Acquisition Card (DAQ), Medical Instrumentation, Vibration Monitoring & Analysis, Test & Measurement Instrumentation, Pen-Loop Control & Servo Systems.
Industrial PLC Analog Input Module
The MAX1311ECM+T fits PLC analog input modules because its software-configurable ±10V, ±5V, and 0-5V input ranges match the standard industrial signal levels directly, without external signal conditioning op-amps. The 1075 ksps sampling rate supports multi-channel multiplexing at >100 ksps per channel when combined with an external analog MUX, and the 12-bit resolution delivers 0.024% FSR accuracy for 4-20mA loop monitoring and process variable acquisition. The parallel digital interface simplifies connection to PLC backplane microcontrollers. Compared to a discrete op-amp + ADC solution, the MAX1311ECM+T reduces BOM count by 4-5 components and shrinks PCB area by approximately 40%, while the industrial -40C to +85C temperature grade ensures reliable factory-floor operation.
Recomendado
Data Acquisition Card (DAQ)
The MAX1311ECM+T is ideal for PCI/PCIe data acquisition cards because its 1075 ksps sampling rate captures full audio-bandwidth signals with significant per-channel headroom for multi-channel multiplexing. The 12-bit resolution (0.024% FSR) suits vibration, acoustic emission, and general-purpose transducer monitoring applications. The integrated ±10V bipolar input eliminates the external op-amp signal conditioning required by single-supply ADCs, simplifying analog front-end design. The parallel digital output interface connects directly to FPGA or DSP buffers on the DAQ card, enabling real-time streaming to host PCs. The 48-LQFP package is well-supported by standard card-assembly lines with reflow profiles compatible with industrial-grade lead-free processes.
Recomendado
Medical Instrumentation
The MAX1311ECM+T serves medical instrumentation front-ends such as patient monitoring and diagnostic equipment because its 12-bit resolution and 1075 ksps sampling rate capture physiological waveforms (ECG, EMG, pulse oximetry) with adequate temporal resolution. The ±10V bipolar input range accepts signals from biopotential amplifier outputs directly, and the SAR architecture delivers low-latency conversion critical for real-time patient monitoring and alarm detection. The parallel digital interface allows direct connection to medical-grade microcontrollers and DSPs. The wide analog input range and integrated input protection (ESD diodes) improve reliability in medical environments with cable-borne transients from patient-connected electrodes.
Recomendado
Vibration Monitoring & Analysis
The MAX1311ECM+T is well-suited for industrial vibration monitoring because its 1075 ksps sampling rate (Nyquist-Funnel = 537 kHz) covers all relevant mechanical-vibration frequencies including high-speed spindle harmonics and bearing fault signatures above 50 kHz. The 12-bit resolution provides 72 dB dynamic range, sufficient for FFT-based vibration spectrum analysis with proper gain staging. The ±10V input range accepts signals directly from IEPE-compatible accelerometer charge amplifiers without external scaling. The SAR architecture's single-cycle conversion enables per-sample phase coherence required for order tracking and synchronous averaging. The industrial -40C to +85C temperature range supports deployment in harsh factory environments near heat-generating equipment.
Recomendado
Test & Measurement Instrumentation
The MAX1311ECM+T fits bench-top and rack-mount test-and-measurement instruments (oscilloscope front-ends, spectrum analyzers, function generator arbitrary-waveform feedback) because its 1075 ksps rate and 12-bit resolution deliver a balance of bandwidth and accuracy for general-purpose digitizer channels. The ±10V bipolar input range accommodates standard test signals (1V, 5V, 10V full-scale) without external attenuators, simplifying front-panel input protection and range switching. The parallel interface allows direct FPGA-based real-time DSP processing for FFT, digital filtering, and arbitrary-waveform synthesis. The wide industrial temperature range ensures bench-to-spec accuracy across typical lab environments.
Recomendado
Pen-Loop Control & Servo Systems
The MAX1311ECM+T fits pen-loop control (position, velocity) feedback systems in CNC machines, robotics, and servo drives because its 1075 ksps sampling rate supports closed-loop update rates above 100 kHz with deterministic SAR latency. The 12-bit resolution provides 4096 counts of position feedback, suitable for mid-precision motion control. The ±10V input range accepts standard servo-amplifier error signals directly. The parallel interface allows deterministic sample timing aligned with PWM control loops, enabling tight phase-margin control. The wide industrial temperature range ensures reliable operation in motor-drive environments with elevated ambient temperature and EMI from switching power stages.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MAX1311ECM+T — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MAX1311ECM/V+ | MAX1311ECM+ | MAX1310ECM+ | MAX1309ECM/V+ | MAX1304ECM/V+ | AD7606BSTZ |
|---|---|---|---|---|---|---|---|
| Brand | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Analog Devices |
| Package | 48-LQFP (7x7) | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 16 bit |
| Input Channels | 2 | 2 | 2 | 2 | 8 (simultaneous) | 12 (simultaneous) | 8 (simultaneous) |
| Digital Interface | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel/Serial |
| Supply Voltage | +5V | +5V | +5V | +5V | +5V | +5V | +5V |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR | SAR (simultaneous) |
Principais diferenciais
- Highest sampling rate in 12-bit LQFP-48 SAR ADC family (vs MAX1310ECM+)
- True bipolar ±10V input without external signal conditioning (vs MAX1309ECM/V+)
- Highest resolution 12-bit ADC in same LQFP-48 footprint (vs AD7606BSTZ)
Notas de projeto
Estimated: Decouple AVCC and DVDD separately with a 10uF tantalum or ceramic bulk capacitor plus a 0.1uF ceramic capacitor placed within 5 mm of each supply pin. The MAX1311ECM+T analog and digital sections have independent supply pins to isolate digital switching transients from the sensitive analog front-end. Use a ferrite bead or pi-filter between DVDD and AVCC if a single +5V rail is shared; this prevents digital switching noise from coupling into the analog conversion result. Power-supply rejection ratio (PSRR) degrades at higher sampling rates, so proper decoupling is critical at 1075 ksps operation.
Route analog input traces (AIN0, AIN1) as short, guarded microstrip lines away from digital outputs (D0-D11) and clock traces. Place a ground guard ring around the analog input pins to absorb stray noise and reduce crosstalk. Use a continuous analog ground plane (AVSS) under and around the IC, and stitch digital ground (DGND) to analog ground at a single point near the IC's AGND pin. This star-ground topology prevents digital return currents from flowing through the analog ground reference and corrupting conversion accuracy.
Do not exceed the absolute maximum analog input voltage of ±15V (overvoltage) on AIN0/AIN1, even momentarily, as this can permanently damage the on-chip ESD diodes. Add external TVS diodes (e.g., SMBJ5.0A) and series resistance (100 ohm) for cable-borne transient protection in industrial environments. The internal reference (2.5V) requires a 0.1uF ceramic bypass capacitor on REFCAP; do not omit this capacitor or reference noise will degrade SNR. Respect the manufacturer's tACQ (acquisition time) and tCONV (conversion time) specifications in the timing register code; violating these degrades INL/DNL.
Informações de conformidade
RoHS compliant per DigiKey product listing. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified (not automotive grade).
