MAX22530AWE+ - Isolated 12-bit 4-Ch SAR ADC | Analog Devices
N.º de pieza: MAX22530AWE+ ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $11.5 | $11,50 |
| 10 | $10.35 | $103,50 |
| 100 | $9.2 | $920,00 |
| 500 | $8.4 | $4.200,00 |
| 1.000 | $7.65 | $7.650,00 |
MAX22530AWE+ Descripción general
A SAR ADC is a successive-approximation-register analog-to-digital converter, a class of precision ADC that uses a binary-search algorithm and a precision DAC to convert an input voltage to a digital code in a fixed number of clock cycles. Isolated ADCs sit within the broader signal-chain hierarchy of data-acquisition front ends -> ADCs -> precision converters -> mixed-signal ICs -> semiconductors, where galvanic isolation adds a critical safety barrier between hazardous field voltages and the host processor.
Key features include 12-bit resolution, four single-ended input channels multiplexed to one SAR core, integrated digital isolation, an integrated isolated DC-DC converter on chip, and a logic-side supply range of 1.71 V to 5.5 V. The wide-body SOIC package provides the reinforced clearance/creepage required for reinforced isolation. The MAXSafe™ architecture is designed for industrial sensors, PLC analog input modules, and any system that requires isolation between the analog front end and a low-voltage digital controller.
Typical applications include isolated voltage and current sensing in motor drives, solar inverters, and industrial process-control loops; PLC analog input modules; battery-management systems; and medical equipment where patient isolation is mandatory. The internal DC-DC converter eliminates the bulky external isolated supply, shrinking the BOM.
When designing with the MAX22530, pay attention to the input-channel MUX settling time and the recommended input RC anti-alias filter. Place decoupling capacitors close to both field-side and logic-side supply pins, and observe the wide-body SOIC PCB clearance rules for the rated isolation voltage.
Alternativas directas para MAX22530AWE+ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MAX22532AWE+
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MAX22530AWE+ Valores máximos y características eléctricas
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| MPN | MAX22530AWE+ |
| Product Type | Isolated Analog-to-Digital Converter (ADC) |
| Family | MAXSafe™ (MAX22530-MAX22532) |
| Resolución | 12 bit |
| Number of Channels | 4 single-ended / 2 differential (multiplexed) |
| ADC Architecture | SAR (Successive Approximation Register) |
| Sample Rate | 22 ksps |
| Input Type | Single-ended / differential, analog |
| Data Interface | SPI (serial) |
| Number of ADCs | 1 |
| Analog Supply Voltage | 1.71 V to 5.5 V (logic side, internal DC-DC powers field side) |
| Isolation | Galvanic isolation integrated (on-chip DC-DC converter) |
| Encapsulado | 16-SOIC (WSOIC, 0.295" / 7.50 mm wide body) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant (per JLCPCB listing) |
| REACH Status | REACH unaffected (per ersaelectronics listing) |
Configuración de pines de MAX22530AWE+
| Pin 1 | VDD — Logic-side supply (1.71 V to 5.5 V) |
| Pin 2 | GND — Logic-side ground |
| Pin 3 | CS — SPI chip-select (active low) |
| Pin 4 | SCLK — SPI serial clock |
| Pin 5 | DOUT — SPI data output |
| Pin 6 | DRDY — Data-ready / interrupt output |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | AIN0 — Analog input channel 0 (field side) |
| Pin 10 | AIN1 — Analog input channel 1 (field side) |
| Pin 11 | AIN2 — Analog input channel 2 (field side) |
| Pin 12 | AIN3 — Analog input channel 3 (field side) |
| Pin 13 | REF — Reference input (field side) |
| Pin 14 | AGND — Field-side analog ground (isolated) |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
Aplicaciones típicas
MAX22530AWE+ es adecuado para 6 aplicacións: Isolated Voltage and Current Sensing in Motor Drives, Solar Inverter DC-Bus Voltage Monitoring, PLC Analog Input Modules, Battery Management System (BMS) Cell Monitoring, Medical Patient-Isolation Equipment, Industrial Process Control Loop Digitization.
Isolated Voltage and Current Sensing in Motor Drives
The MAX22530AWE+ is purpose-built for isolated analog sensing in industrial AC and DC motor drives. Its integrated galvanic isolation (UL/IEC-rated per the MAXSafe™ family datasheet) bridges the high-voltage motor-drive stage to a low-voltage MCU/DSP controller, while the on-chip isolated DC-DC converter eliminates the external isolated supply that would otherwise consume PCB area. With 12-bit resolution and 22 ksps sample rate, the device comfortably digitizes phase-current shunt signals at typical 10-20 kHz PWM update rates. Placed on each phase-current shunt and the DC-bus divider, the MAX22530AWE+ returns SPI data to the controller while sustaining the reinforced isolation barrier required by IEC 61800-5-1 drive standards.
Recomendado
Solar Inverter DC-Bus Voltage Monitoring
In solar string- and central-inverter designs, the MAX22530AWE+ provides reinforced-isolated digitization of the high-voltage DC bus and panel-string voltages. The integrated isolated DC-DC converter allows the field-side ADC to operate from a single 1.71 V-5.5 V logic-side supply, removing the auxiliary flyback or push-pull supply traditionally required. The 12-bit resolution and 22 ksps throughput are sufficient for MPPT control loops running at typical 1-10 kHz rates. The 16-WSOIC package preserves the wide creepage distance required by IEC 62109-1 for PV equipment isolation, eliminating the need for additional PCB cutouts.
Recomendado
PLC Analog Input Modules
The MAX22530AWE+ is a natural fit for 4-channel isolated analog input modules used in PLC and distributed I/O systems. Its 4-input multiplexer feeds a single SAR core, exactly matching the typical 4AI/8AI PLC card architecture, while integrated galvanic isolation (reinforced per MAXSafe™ datasheet) satisfies the 2500 V or higher isolation required between field-side wiring and the backplane logic. The 1.71 V-5.5 V logic-side supply interfaces directly to common 3.3 V or 5 V MCU backplanes without level shifters. Replacing the traditional discrete ADC-plus-isolator-plus-DC-DC chain with the MAX22530AWE+ shrinks the analog-input BOM by approximately 50%.
Recomendado
Battery Management System (BMS) Cell Monitoring
Industrial and grid-scale battery management systems use the MAX22530AWE+ to digitize individual cell or module voltages with reinforced isolation between the high-voltage battery stack and the low-voltage BMS controller. The 12-bit resolution provides approximately 4.9 mV LSB on a 5 V full-scale range, sufficient for cell-balancing decisions in Li-ion stacks of 12-16 cells. The integrated isolated DC-DC converter supplies the field-side ADC from the logic rail, which is critical when the BMS controller is referenced to chassis ground. The 22 ksps throughput allows simultaneous monitoring of multiple cell groups via the multiplexer, reducing per-channel cost.
Recomendado
Medical Patient-Isolation Equipment
Patient-connected medical devices such as ECG, EEG, patient monitors, and infusion pumps require reinforced isolation (typically 2500 V or 5000 V dielectric withstand) between the patient side and the operator/main-side electronics. The MAX22530AWE+ provides the on-chip galvanic isolation required by IEC 60601-1 for patient-applied parts, while digitizing analog biosignals directly at the patient side. The 12-bit SAR architecture delivers low-latency conversion critical for real-time waveform monitoring, and the integrated isolated DC-DC converter removes the bulky auxiliary supply that would otherwise dominate the isolated-section BOM. Designers must still verify creepage/clearance and MOPP ratings for the specific medical classification.
Recomendado
Industrial Process Control Loop Digitization
In 4-20 mA loop-powered and HART-enabled process instrumentation, the MAX22530AWE+ provides isolated digitization of field-side process variables (pressure, flow, temperature, level) referenced to a grounded or floating field transmitter. The integrated isolation barrier eliminates ground loops across long field wiring runs, which are a primary source of measurement error in chemical, oil-and-gas, and water-treatment plants. The 22 ksps throughput and SPI interface allow the local microcontroller to run advanced digital filtering (e.g., 50/60 Hz notch) without burdening the central DCS. The wide-body SOIC package preserves the creepage required for installation category II or III field wiring.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MAX22530AWE+ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MAX22531AAP+ | MAX22532AWE+ |
|---|---|---|---|
| Package | 16-SOIC (WSOIC, wide body) | 20-SSOP | 16-SOIC (WSOIC, wide body) |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bit | 12 bit | 12 bit |
| Number of Input Channels | 4 single-ended / 2 differential | 4 (differential config) | 4 (variant-specific) |
| Sample Rate | 22 ksps | 22 ksps | 22 ksps |
| Integrated Isolated DC-DC | Yes | Yes | Yes |
| ADC Architecture | SAR | SAR | SAR |
| Data Interface | SPI (serial) | SPI (serial) | SPI (serial) |
| Logic-Side Supply | 1.71 V to 5.5 V | 1.71 V to 5.5 V | 1.71 V to 5.5 V |
Diferenciadores clave
- Integrated isolated DC-DC converter eliminates external isolated supply (frente a Discrete ADC + digital isolator (e.g., ADS131A04 + ISO7761FDWR))
- Wide-body SOIC package preserves creepage/clearance (frente a MAX22531AAP+ (20-SSOP))
- Single 1.71 V-5.5 V logic-side supply (frente a MAX22531AAP+)
Notas de diseño
The 16-WSOIC wide-body SOIC package requires minimum creepage and clearance distances on the PCB to meet the rated isolation voltage (per datasheet). Maintain at least the manufacturer-specified spacing under the package body and avoid placing any copper traces or vias beneath the package between the field-side and logic-side pin rows. Use slot-in PCB cutouts if higher isolation categories (installation category III or IV) are required.
The MAX22530AWE+ integrates an isolated DC-DC converter that powers all field-side circuitry from the logic-side VDD pin. Apply a 1.71 V-5.5 V supply to VDD and place 100 nF + 10 uF decoupling capacitors as close as possible to both VDD and GND pins. The on-chip DC-DC converter eliminates the need for an external isolated supply, but designers should still review the field-side decoupling requirements in the datasheet before finalizing the BOM.
For best SNR, add an anti-alias RC filter (typically 1 kOhm + 1 nF) at each AIN0-AIN3 input, placed as close as possible to the input pins. The SAR input structure requires the input settle within the acquisition window; for 22 ksps operation, the multiplexer settling time is the dominant factor. Refer to the datasheet's recommended input-impdance values to avoid gain errors and to ensure INL/DNL specifications are met at full throughput.
Información de cumplimiento
RoHS compliance confirmed via JLCPCB listing; REACH unaffected per ersaelectronics listing. AEC-Q100 not applicable (industrial target market). Halogen-free and conflict-minerals status not stated in the public snippets provided.
