AD4002BRUZ - 18-Bit SAR ADC, 2 MSPS | Analog Devices
N.º de pieza: AD4002BRUZ ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $11.25 | $112,50 |
| 100 | $10 | $1.000,00 |
| 500 | $9 | $4.500,00 |
| 1.000 | $8.5 | $8.500,00 |
AD4002BRUZ Descripción general
A SAR ADC is a type of analog-to-digital converter that uses a successive approximation register to convert an analog input signal into a digital output. It works by comparing the input voltage against a series of binary-weighted reference voltages, refining the approximation with each clock cycle. SAR ADCs are known for their high speed, low power consumption, and ease of use, making them ideal for applications such as data acquisition, industrial process control, and medical instrumentation.
Key features of the AD4002BRUZ include 18-bit resolution, a maximum sampling rate of 2 MSPS, and an Easy Drive architecture that simplifies the analog front-end design by reducing input drive requirements. The device also features input span compression, which eliminates the need for a negative supply to the ADC driver amplifier while preserving access to the full ADC code range. An input overvoltage clamp protects the ADC inputs against overvoltage events, minimizing disturbances on the reference pin and eliminating the need for external protection diodes.
Technically, the AD4002BRUZ uses a precision SAR architecture with an internal reference buffer, ensuring high linearity and low noise. The device supports a wide input voltage range and operates from a single 1.8V to 5V supply, making it versatile for various system power rails. The Easy Drive feature reduces the settling time requirements of the driving amplifier, allowing for lower power and simpler front-end designs.
Typical applications include high-speed data acquisition systems, industrial automation, medical imaging, and precision instrumentation. The AD4002BRUZ is also suitable for battery-powered devices due to its low power consumption. When designing with this ADC, ensure proper decoupling of the VDD and VREF pins and consider the input overvoltage clamp for robust operation in harsh environments.
Alternativas directas para AD4002BRUZ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con AD4002BRUZ (mismo factor de forma y huella) — difiere en Package, Resolution, Supply Voltage, Input Type, Interface.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
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Ver hoja de datos →AD4002BRUZ Valores máximos y características eléctricas
| Resolución | 18-bit |
| Frecuencia de muestreo | 2 MSPS |
| Input Type | Single-ended |
| Interfaz | SPI |
| Tensión de alimentación | 1.8V to 5V |
| Tensión de referencia | VREF (external) |
| Encapsulado | 16-TSSOP (0.173", 4.40mm Width) |
| Temperatura de funcionamiento | -40°C to +125°C |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
| Number of Channels | 1 |
Configuración de pines de AD4002BRUZ
| Pin 1 | VDD — Power supply |
| Pin 2 | GND — Ground |
| Pin 3 | VREF — Reference voltage input |
| Pin 4 | IN+ — Positive analog input |
| Pin 5 | IN- — Negative analog input |
| Pin 6 | SCK — Serial clock input |
| Pin 7 | SDI — Serial data input |
| Pin 8 | SDO — Serial data output |
| Pin 9 | CNV — Convert input |
| Pin 10 | BUSY — Busy output |
| Pin 11 | GND — Ground |
| Pin 12 | VDD — Power supply |
Aplicaciones típicas
AD4002BRUZ es adecuado para 6 aplicacións: High-Speed Data Acquisition, Industrial Automation, Medical Instrumentation, Precision Instrumentation, Battery-Powered Devices, Communication Systems.
High-Speed Data Acquisition
The AD4002BRUZ's 18-bit resolution and 2 MSPS sampling rate make it ideal for high-speed data acquisition systems. Its Easy Drive feature reduces input drive requirements, simplifying the analog front-end. The input overvoltage clamp protects against transients, ensuring reliable operation in industrial environments. With a wide supply range and low power, it suits portable and battery-powered data loggers.
Recomendado
Industrial Automation
In industrial automation, the AD4002BRUZ provides precise analog-to-digital conversion for process control and monitoring. Its wide operating temperature range (-40°C to +125°C) ensures reliability in harsh environments. The SPI interface simplifies integration with industrial microcontrollers. The input overvoltage clamp eliminates the need for external protection diodes, reducing BOM cost and board space.
Recomendado
Medical Instrumentation
The AD4002BRUZ is suitable for medical instrumentation such as patient monitoring and diagnostic equipment. Its high accuracy and low noise ensure precise measurements. The small 16-TSSOP package fits compact medical devices. The Easy Drive feature reduces the complexity of the driving amplifier, which is beneficial in battery-powered portable medical devices. The wide supply range allows operation from common battery voltages.
Recomendado
Precision Instrumentation
For precision instrumentation like digital multimeters and spectrum analyzers, the AD4002BRUZ offers 18-bit resolution and high linearity. Its SPI interface allows easy connection to DSPs and FPGAs. The input span compression feature eliminates the need for a negative supply, simplifying the design. The overvoltage clamp protects sensitive inputs, enhancing robustness in test and measurement equipment.
Recomendado
Battery-Powered Devices
The AD4002BRUZ's low power consumption and wide supply range (1.8V to 5V) make it ideal for battery-powered devices. Its small package and Easy Drive feature reduce overall system power and size. The input overvoltage clamp provides protection without external components, saving board space. This makes it suitable for portable medical devices, handheld instruments, and wireless sensors.
Recomendado
Communication Systems
In communication systems, the AD4002BRUZ can be used for baseband signal processing and digital predistortion. Its high sampling rate and resolution enable accurate signal capture. The SPI interface supports high-speed data transfer. The Easy Drive feature simplifies the interface to RF front-ends. The wide supply range allows integration with various logic levels.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para AD4002BRUZ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | AD4000BRUZ | AD4006BRUZ | AD4001BRUZ |
|---|---|---|---|---|
| Resolution | 18-bit | 16-bit | 18-bit | 16-bit |
| Sampling Rate | 2 MSPS | 1 MSPS | 500 kSPS | 2 MSPS |
| Supply Voltage | 1.8V to 5V | 1.8V to 5V | 1.8V to 5V | 1.8V to 5V |
| Package | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Interface | SPI | SPI | SPI | SPI |
| Input Type | Single-ended | Single-ended | Single-ended | Single-ended |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
Diferenciadores clave
- 18-bit resolution at 2 MSPS (frente a AD4000BRUZ)
- Easy Drive technology (frente a AD4006BRUZ)
- Input overvoltage clamp (frente a AD4001BRUZ)
Notas de diseño
Decouple the VDD pin with a 10uF ceramic capacitor and a 0.1uF capacitor placed as close to the pin as possible. The VREF pin should also be decoupled with a 10uF capacitor to ensure a stable reference voltage. Proper decoupling minimizes noise and ensures accurate conversions.
Use a solid ground plane under the ADC to minimize noise. Keep analog and digital grounds separate and connect them at a single point. Route the SPI lines away from analog input traces to avoid crosstalk. Follow the layout guidelines in the AD4002 datasheet for optimal performance.
Ensure the input signal is within the specified common-mode range. The input overvoltage clamp protects against overvoltage, but do not rely on it for continuous operation. Also, avoid driving the input with a high-impedance source without a buffer, as this can cause settling errors. Use a low-impedance driver or an op-amp buffer.
Información de cumplimiento
RoHS compliant per DigiKey listing. Other compliance data not provided.
