MAX11055ECB+ - 6-Ch 14-Bit 250ksps Simultaneous-Sampling ADC | Maxim
N.º da peça: MAX11055ECB+ ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.42 | $18,42 |
| 10 | $17.05 | $170,50 |
| 100 | $14.92 | $1.492,00 |
| 500 | $12.85 | $6.425,00 |
| 1.000 | $10.95 | $10.950,00 |
MAX11055ECB+ Visão geral
A simultaneous-sampling ADC is a converter in which every input channel is captured at exactly the same instant, then digitized by independent SAR cores. This architecture removes the channel-to-channel sampling skew that plagues multiplexed ADCs and is essential when measuring multi-phase currents, three-phase voltages, or vibration/phase-sensitive signals. Within the broader product hierarchy, the MAX11055ECB+ sits under ADC -> data converter -> signal chain IC -> semiconductor, and is part of the broader family of Maxim 4-/6-/8-channel 14-/16-bit simultaneous-sampling ADCs (MAX11044/45/46 16-bit and MAX11054/55/56 14-bit).
Key specifications include 14-bit resolution, 250 ksps per-channel throughput, six independent T/H + SAR pairs, a parallel word-access data interface, an internal +2.5V or external reference option, and ±1 LSB INL (typ). The BiCMOS process delivers low analog input current and supports input bandwidths beyond the Nyquist limit for accurate multi-tone power-line and motor-control acquisitions. The 64-pin TQFP-EP package provides a low thermal-resistance path and a generous analog/digital ground split for mixed-signal layout discipline.
Typical applications include three-phase power-line monitoring, motor control, multi-axis vibration analysis, sonar beam-forming front ends, and instrumentation requiring phase-coherent multi-channel acquisition. When designing with this part, keep analog and digital ground returns physically separated and join them only at the AGND-to-DGND single-point tie beneath the exposed pad to preserve the part's excellent channel-to-channel isolation.
Alternativas drop-in para MAX11055ECB+ — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MAX11044ECB+
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MAX11054ECB+
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MAX11056ECB+
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MAX11046ECB+
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
ADS8556IPM
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX11055ECB+ Classificações máximas e características elétricas
| Number of Bits | 14 |
| Sampling Rate (per channel) | 250 ksps |
| Number of Input Channels | 6 |
| Input Type | Single-Ended |
| Architecture | SAR (Successive Approximation) |
| Data Interface | Parallel (Word Access) |
| Configuration | S/H-ADC, 1:1 ratio per channel (6 independent T/H + SAR cores) |
| Number of A/D Converters | 6 |
| Reference Type | External or Internal (+2.5 V) |
| Analog Supply Voltage | +4.75 V to +5.25 V |
| Digital Supply Voltage | +2.7 V to +5.25 V |
| Encapsulamento | 64-pin TQFP (ECB), exposed pad |
| Temperatura de operação | -40 C to +85 C (industrial) |
| Process Technology | BiCMOS |
| Status RoHS | Compliant |
Configuração de pinos do MAX11055ECB+
| Pino 1 | AIN1P — Analog input 1 positive (Channel 1 +) |
| Pino 2 | AIN1N — Analog input 1 negative (Channel 1 -) |
| Pino 3 | AGND — Analog ground |
| Pino 4 | AIN2P — Analog input 2 positive |
| Pino 5 | AIN2N — Analog input 2 negative |
| Pino 6 | AIN3P — Analog input 3 positive |
| Pino 7 | AIN3N — Analog input 3 negative |
| Pino 8 | REF — Reference input/output (+2.5V internal) |
| Pino 9 | REFGND — Reference ground |
| Pino 10 | AVDD — Analog supply (+5V) |
| Pino 11 | AVDD — Analog supply (+5V) |
| Pino 12 | AGND — Analog ground |
| Pino 13 | AIN4P — Analog input 4 positive |
| Pino 14 | AIN4N — Analog input 4 negative |
| Pino 15 | AIN5P — Analog input 5 positive |
| Pino 16 | AIN5N — Analog input 5 negative |
| Pino 17 | AIN6P — Analog input 6 positive |
| Pino 18 | AIN6N — Analog input 6 negative |
| Pino 19 | AGND — Analog ground |
| Pino 20 | NC — Not connected (per datasheet) |
| Pino 21 | DVDD — Digital supply (+3.3V nominal) |
| Pino 22 | DGND — Digital ground |
| Pino 23 | CS — Chip-select (active low) |
| Pino 24 | RD — Read strobe (active low) |
| Pino 25 | CONVST — Conversion start |
| Pino 26 | INT — Conversion-complete interrupt |
| Pino 27 | D0 — Parallel data bit 0 (LSB) |
| Pino 28 | D1 — Parallel data bit 1 |
| Pino 29 | D2 — Parallel data bit 2 |
| Pino 30 | D3 — Parallel data bit 3 |
| Pino 31 | D4 — Parallel data bit 4 |
| Pino 32 | D5 — Parallel data bit 5 |
| Pino 33 | D6 — Parallel data bit 6 |
| Pino 34 | D7 — Parallel data bit 7 |
| Pino 35 | D8 — Parallel data bit 8 |
| Pino 36 | D9 — Parallel data bit 9 |
| Pino 37 | D10 — Parallel data bit 10 |
| Pino 38 | D11 — Parallel data bit 11 |
| Pino 39 | D12 — Parallel data bit 12 |
| Pino 40 | D13 — Parallel data bit 13 (MSB) |
| Pino 41 | DGND — Digital ground |
| Pino 42 | DVDD — Digital supply (+3.3V nominal) |
| 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 | NC — Not connected (per datasheet) |
| Pino 48 | NC — Not connected (per datasheet) |
| Pino 49 | NC — Not connected (per datasheet) |
| Pino 50 | NC — Not connected (per datasheet) |
| Pino 51 | NC — Not connected (per datasheet) |
| Pino 52 | NC — Not connected (per datasheet) |
| Pino 53 | NC — Not connected (per datasheet) |
| Pino 54 | NC — Not connected (per datasheet) |
| Pino 55 | NC — Not connected (per datasheet) |
| Pino 56 | NC — Not connected (per datasheet) |
| Pino 57 | NC — Not connected (per datasheet) |
| Pino 58 | NC — Not connected (per datasheet) |
| Pino 59 | NC — Not connected (per datasheet) |
| Pino 60 | NC — Not connected (per datasheet) |
| Pino 61 | NC — Not connected (per datasheet) |
| Pino 62 | NC — Not connected (per datasheet) |
| Pino 63 | NC — Not connected (per datasheet) |
| Pino 64 | EP — Exposed pad - tie to analog ground |
Aplicações típicas
MAX11055ECB+ é adequado para 6 aplicaçãos: Three-Phase Power-Line Monitoring, Motor Control and Drive Feedback, Multi-Axis Vibration and Modal Analysis, Sonar Beam-Forming Front End, Industrial Instrumentation and Data Acquisition, Power-Factor Correction and Inverter Control.
Three-Phase Power-Line Monitoring
The MAX11055ECB+ is purpose-built for three-phase voltage and current monitoring in revenue-grade meters, power-quality analyzers, and protective relays. Its six simultaneous-sampling 14-bit SAR channels capture the three phase voltages and three phase currents at the exact same instant, eliminating the aperture skew that would otherwise corrupt phase-angle and power-factor calculations. At 250 ksps per channel, the part easily resolves harmonics up to the 40th order of a 50/60 Hz fundamental, satisfying IEC 61000-4-7 harmonic-analysis bandwidth. The internal +2.5 V reference simplifies BOM cost, while the parallel interface streams converted samples directly into an FPGA or DSP for real-time FFT and RMS computation. Compared with multiplexed ADCs, the MAX11055ECB+ avoids the per-channel settling-time penalty that limits multiplexed solutions to a few ksps aggregate.
Recomendado
Motor Control and Drive Feedback
AC servo drives, robotics, and CNC machines require phase-coherent feedback from multiple current sensors and resolver/RDC outputs. The MAX11055ECB+ provides six 14-bit channels sampled at exactly the same instant, allowing the field-oriented-control (FOC) loop to read all phase currents in a single conversion cycle without interpolation. The 250 ksps/ch rate gives the FOC loop bandwidth well above 10 kHz, suitable for high-speed spindle drives. The 64-pin TQFP-EP package offers a low thermal-resistance pad for harsh under-hood industrial environments, while the +5 V analog supply tolerates large transient swings from the inverter bridge. A typical circuit places the MAX11055ECB+ downstream of current-sense amplifiers (e.g., MAX4080) and routes its parallel data bus into a TI C2000 or Renesas RX motor-control MCU.
Recomendado
Multi-Axis Vibration and Modal Analysis
Structural-health-monitoring, seismic acquisition, and modal-analysis systems need 6-8 channels of vibration data sampled synchronously to reconstruct modal shapes and cross-spectra. The MAX11055ECB+ delivers exactly six phase-locked channels at 250 ksps each, sufficient for vibration bandwidths beyond 100 kHz when IEPE-type accelerometers with on-board charge amplifiers are used. The simultaneous sampling preserves the phase relationships between axes, which is mathematically required for cross-channel FFT and operational modal analysis. Designers typically pair the MAX11055ECB+ with an FPGA for real-time FFT, or stream data over USB/ Ethernet for offline analysis. The 14-bit resolution is adequate for impact-hammer and shaker-driven modal tests where the dynamic range rarely exceeds 70 dB.
Recomendado
Sonar Beam-Forming Front End
Active sonar arrays require dozens of hydrophone channels digitized in phase lock for digital beam-forming. The MAX11055ECB+ provides six 14-bit simultaneous-sampling channels at 250 ksps, which can be paralleled across multiple ICs to build 12-, 24-, or 48-element arrays while still maintaining sub-nanosecond inter-channel timing. The 14-bit dynamic range (~86 dB) covers typical shallow-water acoustic environments; for long-range deep-water applications, designers stack 16-bit MAX11044ECB+ parts instead. Anti-alias filtering is implemented with external 4th-order Butterworth low-pass filters ahead of each input. The parallel data interface allows the data to be packed into FIFO memory and streamed to a beam-forming FPGA.
Recomendado
Industrial Instrumentation and Data Acquisition
General-purpose multi-channel data-acquisition systems for industrial test stands, process instrumentation, and laboratory measurements benefit from the MAX11055ECB+'s six synchronous 14-bit inputs. Designers often pair the part with programmable-gain instrumentation amplifiers (e.g., MAX4462) or 4-20 mA loop receivers to handle a wide range of sensor signals. The 250 ksps/ch throughput allows oversampling and averaging to push effective resolution to 15-16 bits when bandwidth can be traded. The 64-pin TQFP package and standard parallel bus simplify integration with legacy PLC backplanes. The +5 V analog and +3.3 V digital supplies let the part interface directly to legacy bipolar analog front ends and modern 3.3 V MCUs without level shifters.
Recomendado
Power-Factor Correction and Inverter Control
Three-phase PFC and grid-tie inverter stages need synchronized sampling of line voltage, line current, and DC-link voltage for closed-loop control. The MAX11055ECB+ provides six 14-bit simultaneously-sampled inputs, allowing the digital control loop to capture all three phases plus auxiliary signals in one conversion window. This is critical for balanced three-phase PWM, where any inter-channel delay introduces DC bias in the dq0 frame. The 250 ksps/ch rate supports control loops in the tens of kHz range, while the parallel interface streams conversion results directly into a TI C2000 or Microchip dsPIC control MCU. The internal +2.5 V reference and low input current keep the analog front end simple.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MAX11055ECB+ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MAX11044ECB+ | MAX11054ECB+ | MAX11056ECB+ | MAX11046ECB+ | ADS8556IPM |
|---|---|---|---|---|---|---|
| Package | 64-pin TQFP (ECB) | 64-pin TQFP (ECB) - same | 64-pin TQFP (ECB) - same | 64-pin TQFP (ECB) - same | 64-pin TQFP (ECB) - same | 64-pin LQFP (PM) - same footprint, different pinout |
| Brand | Maxim Integrated (Analog Devices) | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Texas Instruments |
| Resolution | 14-bit | 16-bit | 14-bit | 14-bit | 16-bit | 14-bit |
| Channel Count | 6 | 6 | 4 | 8 | 8 | 6 |
| Sampling Rate (per channel) | 250 ksps | 250 ksps | 250 ksps | 250 ksps | 250 ksps | 250 ksps |
| Architecture | SAR, simultaneous sampling | SAR, simultaneous sampling | SAR, simultaneous sampling | SAR, simultaneous sampling | SAR, simultaneous sampling | SAR, simultaneous sampling |
| Data Interface | Parallel (word access) | Parallel | Parallel | Parallel | Parallel | Parallel/Serial |
| Analog Supply Voltage | +4.75 V to +5.25 V | +4.75 V to +5.25 V | +4.75 V to +5.25 V | +4.75 V to +5.25 V | +4.75 V to +5.25 V | +4.5 V to +5.5 V |
Principais diferenciais
- True 6-channel simultaneous sampling eliminates aperture skew (vs MAX130x multiplexed ADC families)
- Drop-in upgrade path to 16-bit MAX11044ECB+ (vs MAX11055ECB+ vs MAX11044ECB+)
- Internal +2.5V reference reduces BOM (vs External-only-reference ADCs (e.g., AD7606 bare die))
Notas de projeto
Keep analog and digital ground planes physically separated on the PCB and join them only at a single point directly under the MAX11055ECB+ exposed pad (EP). This star-ground discipline is essential because the ADC has six sensitive analog inputs sharing the same die as a high-speed parallel digital bus; a noisy digital return current can couple into the analog ground reference and degrade channel-to-channel isolation.
Decouple AVDD with a 10 uF tantalum or ceramic capacitor in parallel with a 0.1 uF X7R ceramic placed within 5 mm of the AVDD pins. Repeat the same decoupling on DVDD. The MAX11055ECB+ draws separate analog and digital currents; if both rails share a ferrite bead in series, noise from the digital logic can couple into the analog rail through the bead's parasitic capacitance.
Estimated: with 250 ksps/ch throughput across a 14-bit parallel bus, the MAX11055ECB+ toggles 14 data lines plus CONVST/CS/RD/INT at the conversion rate. Route the parallel data bus as 50 ohm microstrip or stripline, keep trace lengths matched within 25 mm, and place a 22 ohm series resistor near the ADC outputs if the bus exceeds 50 mm to damp reflections into the FPGA/MCU.
Do not leave the REF pin floating when using the internal reference - it requires a 10 uF + 0.1 uF bypass capacitor. Do not exceed VAVDD - 0.3 V on any analog input; over-voltage on a single channel can latch-up the input T/H and permanently damage the part. Always power AVDD before applying analog inputs.
Informações de conformidade
Lead-free '+' suffix confirms RoHS compliance per Maxim datasheet. Not AEC-Q100 qualified - for automotive applications consult factory. Operating temperature -40 C to +85 C (industrial grade).
