NAFE33352B40BS - 24-bit Universal AIO-AFE | NXP Semiconductors
N.º da peça: NAFE33352B40BS ✓ Ativo| Qtd. | Preço unitário | Total |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
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| 500 | $0 | $0,00 |
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NAFE33352B40BS Visão geral
An analog front-end (AFE) is the circuit block that conditions and converts real-world analog signals - voltages, currents, and resistances from sensors and actuators - into digital data and back again, sitting between raw field signals and a processor in industrial measurement and control systems. Within the power and signal-chain hierarchy, the AFE occupies the layer above the ADC and DAC themselves, integrating conversion, referencing, amplification, and multiplexing into a single programmable device.
Key features include two universal analog input channels plus one combined analog input/output channel, a 24-bit ADC for high-precision measurement, an integrated precision DAC for signal generation, and a readback path (Vsense, Isense) that measures voltage and current output. An LVMUX connection allows the ADC to digitize external and internal signals for condition monitoring. The combination of current output and voltage input enables resistance and temperature measurement using RTD or thermistor sensors.
The NAFE33352 is the low-power member of the NAFEx3352 family; the NAFE93352 is the high-speed version. Its architecture pairs the precision DAC, low-drift reference, and high-voltage amplifier to generate both small and wide output signals, meeting industrial-grade accuracy requirements without multiple discrete components.
Typical applications include programmable logic controllers (PLCs), process control systems, I/O modules, and data loggers, where universal analog channels must be reconfigured in software for voltage, current, or resistive sensor interfaces.
When designing with this device, configure channel modes through its software interface early in the project, since the universal input structure replaces several fixed-function ICs and layout decisions (grounding, HV routing) should reflect the full configured operating range.
This page synthesizes verified distributor listings, drop-in alternative analysis, and practical design guidance not found in the manufacturer datasheet.
Alternativas drop-in para NAFE33352B40BS — 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 NAFE33352B40BS (mesmo formato e footprint) — diferindo em Product Type.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
NAFE93352B40BS
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$7.9 / unidade
Ver ficha técnica →NAFE33350
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NAFE33352B40BS Classificações máximas e características elétricas
| Product Type | Software-configurable universal AIO analog front-end (AFE) |
| ADC Resolution | 24 bit |
| DAC Resolution Options | 14 / 16 / 18 bit (integrated precision DAC) |
| Analog Input Channels | 2 universal input channels |
| Analog Input/Output Channel | 1 combined AIO channel |
| Voltage Reference | Integrated low-drift voltage reference |
| Buffers | Low-offset drift buffers |
| Output Amplifier | Integrated high-voltage amplifier |
| Readback Path | Vsense and Isense voltage/current output readback |
| Condition Monitoring | LVMUX connection to ADC for external/internal signal digitization |
| Sensor Support | RTD and thermistor (resistance/temperature measurement) |
| Family Position | NAFE33352 = low-power version; NAFE93352 = high-speed version |
| Encapsulamento | 40-HVQFN (6x6 mm) |
| Tipo de montagem | Surface Mount |
| Target Applications | PLC, process control, I/O modules, data loggers |
Guia de Configuração de Pinos do NAFE33352B40BS 40-hvqfn (6x6 mm)
Configuração de pinos para NAFE33352B40BS (pacote 40-hvqfn (6x6 mm)). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para NAFE33352B40BS.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
NAFE33352B40BS é adequado para 6 aplicaçãos: Programmable Logic Controllers (PLC), Process Control Systems, Industrial I/O Modules, Data Loggers, RTD and Thermistor Temperature Measurement, Condition Monitoring Systems.
Programmable Logic Controllers (PLC)
The NAFE33352 fits PLC analog I/O cards because its software-configurable universal channels replace multiple fixed-function conditioning ICs. Its 24-bit ADC provides the resolution margin industrial measurement demands, while the integrated 14/16/18-bit DAC and high-voltage amplifier generate control outputs across small and wide signal ranges. Because channel behavior is configured in software, one analog module design can serve voltage, current, and RTD/thermistor input types selected at commissioning. The Vsense/Isense readback path lets the PLC's processor verify output integrity continuously, improving diagnostics coverage. Placing the AFE close to the field connector with short high-voltage traces minimizes noise pickup, and the integrated low-drift reference removes a separate precision-reference component from the analog card BOM.
Recomendado
Process Control Systems
In process control, the NAFE33352's combination of 24-bit measurement and precise signal generation suits closed-loop control of temperature, pressure, and flow variables. The low-drift voltage reference and low-offset drift buffers maintain accuracy over long periods between calibration cycles, which is critical in continuous process environments. Its current output capability drives standard current-loop actuators while the voltage input channels read transmitters, and the RTD/thermistor support covers direct temperature sensing without additional excitation circuitry. The LVMUX condition-monitoring path lets the same device track loop health signals, supporting predictive maintenance in the control system. For high-speed process loops requiring faster scanning, NXP's NAFE93352 high-speed family member is the designated upgrade path within the same architecture.
Recomendado
Industrial I/O Modules
Universal I/O modules benefit directly from the NAFE33352's architecture: two universal input channels plus one combined analog input/output channel let a single footprint support mixed-channel configurations (e.g., 3 voltage inputs plus 1 current output) without hardware changes. The 24-bit ADC digitizes low-level sensor signals with adequate headroom for industrial accuracy classes, and the integrated high-voltage amplifier produces wider output ranges required by actuators. Software configuration means the same PCB supports multiple SKU variants, reducing inventory complexity for module vendors. The Vsense/Isense readback provides per-channel diagnostics needed for module-level health reporting in Industry 4.0 deployments, and the 40-HVQFN (6x6 mm) package keeps channel density high on standard module form factors.
Recomendado
Data Loggers
The NAFE33352 is the low-power member of the NAFEx3352 family, making it appropriate for battery-powered and low-power data loggers that must run for months on limited energy. Its 24-bit ADC captures slow-moving process signals with high resolution, and the two universal inputs plus AIO channel cover the typical logger channel mix of sensor inputs and an occasional excitation or control output. RTD and thermistor support enables temperature logging using the device's own current output and voltage input combination, eliminating external excitation circuitry and its associated quiescent draw. The LVMUX condition-monitoring input can also record supply or diagnostic signals. Where logging requires faster scan rates, the NAFE93352 high-speed variant is the in-family alternative at the cost of higher power consumption.
Recomendado
RTD and Thermistor Temperature Measurement
The NAFE33352 measures resistance and temperature using RTD or thermistor sensors by combining its current output with its voltage input: the DAC-driven current excites the sensor, and the 24-bit ADC digitizes the resulting voltage, from which resistance is computed. This integrated approach removes the discrete excitation current source, instrumentation amplifier, and separate ADC that a traditional RTD front-end requires, cutting component count and error-budget terms. The low-drift voltage reference directly limits gain-error drift in the resistance calculation, and the Vsense/Isense readback verifies excitation accuracy in-situ. In multi-channel temperature modules, the software-configurable channel structure lets one board support 2-wire, 3-wire, and thermistor input types selected at configuration time, simplifying product variants.
Recomendado
Condition Monitoring Systems
The NAFE33352 supports condition-monitoring functions through its LVMUX connection to the ADC, which digitizes both external and internal signals for diagnostics. In industrial monitoring nodes, this allows the same AFE performing routine analog I/O to also track equipment health signals - supply rails, internal reference levels, or external monitor points - without a second data-acquisition device. The 24-bit resolution captures small signal drifts early, and the Vsense/Isense readback path confirms that command outputs are actually being delivered, detecting wiring faults or actuator degradation. Because the NAFE33352 is the low-power family member, it suits continuously powered monitoring nodes, while the NAFE93352 serves high-speed vibration-oriented monitoring where sample rate dominates power considerations.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para NAFE33352B40BS — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | NAFE93352B40BS | NAFE33350 |
|---|---|---|---|
| Package | 40-HVQFN (6x6 mm) | 40-HVQFN (6x6 mm) - same | 40-HVQFN (6x6 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| DAC Resolution | 14/16/18 bit | 14/16/18 bit | 14/16/18 bit (output-focused) |
| Family Position | Low-power version | High-speed version | Analog output AFE |
| Target Applications | PLC, process control, I/O modules, data loggers | High-speed industrial measurement and control | High-precision analog output control |
Principais diferenciais
- Low-power position in the NAFEx3352 family (vs NAFE93352B40BS)
- Combined input and output on one AIO channel (vs NAFE33350)
- Integrated RTD/thermistor measurement path (vs NAFE93352B40BS)
Notas de projeto
The NAFE33352 integrates a high-voltage amplifier driving the AIO channel, so layout must respect creepage and clearance between HV output traces and low-level ADC/reference nodes on the 6x6 mm HVQFN footprint. Route analog sense lines (Vsense, Isense) as Kelvin connections directly to the output node to preserve readback accuracy. Use a solid ground plane under the analog section and separate it from digital switching returns, rejoining at a single point near the supply. Decouple the analog supply and reference pins with 100 nF ceramics placed within 2 mm of the respective HVQFN pads.
Because channels are software-configurable at runtime, design the input protection and filtering network for the worst-case configured mode - including the highest voltage range and current-output mode - rather than a single fixed function. Add series resistance and clamping on field terminals to survive miswiring on universal inputs, and remember the LVMUX path can bring external signals into the ADC, so those mux inputs deserve the same ESD and filtering treatment as primary field channels.
A common mistake is treating the NAFE33352 like a conventional fixed-function ADC+DAC pair: its universal channel modes must be configured through the device's command interface before measurements are valid, and RTD measurement depends on correctly pairing the DAC current output with the ADC voltage input in firmware. Also avoid substituting the NAFE93352 without review - it is the high-speed version, not a power-identical swap. Validate the configuration sequence against the NAFE33352-EVB reference software before finalizing firmware.
Informações de conformidade
Compliance status not stated in the provided verified web data; consult the official NXP product page for NAFE33352B40BS for RoHS/REACH declarations.
