Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tube |
| ProductStatus | Active |
| NumberofBits | 24 |
| SamplingRate(PerSecond) | 120 |
| NumberofInputs | 1 |
| InputType | Differential |
| DataInterface | SPI, DSP |
| Configuration | ADC |
| NumberofA/DConverters | 1 |
| Architecture | Sigma-Delta |
| ReferenceType | External |
| Voltage-SupplyAnalog | 2.5V ~ 5.25V |
| Voltage-SupplyDigital | 2.5V ~ 5.25V |
| OperatingTemperature | -40°C ~ 105°C |
| Package/Case | 10-TFSOP, 10-MSOP (0.118, 3.00mm Width) |
| SupplierDevicePackage | 10-MSOP |
Tổng quan
Description
The AD7791BRMZ is a low-power, 16-bit analog-to-digital converter (ADC) designed by Analog Devices. It is part of the AD7791 series, optimized for precision measurement applications, particularly in instrumentation and sensor signal acquisition. The ADC features a sigma-delta architecture that offers high resolution and noise performance, making it suitable for applications requiring precise data conversion, such as weigh scales, temperature measurements, and pressure sensors.
Key features of the AD7791BRMZ include a low noise front end, a programmable gain amplifier (PGA) allowing gain settings from 1 to 128, and an on-chip precision oscillator. The device operates with a single supply voltage and has a low power consumption, which makes it an ideal choice for battery-powered applications. It also includes a simple SPI-compatible interface for easy integration with microcontrollers.
The AD7791BRMZ is available in a small MSOP package, providing additional flexibility for compact designs. Its low noise, high accuracy, and ease of use make it a popular choice for precision measurement applications.
Key features of the AD7791BRMZ include a low noise front end, a programmable gain amplifier (PGA) allowing gain settings from 1 to 128, and an on-chip precision oscillator. The device operates with a single supply voltage and has a low power consumption, which makes it an ideal choice for battery-powered applications. It also includes a simple SPI-compatible interface for easy integration with microcontrollers.
The AD7791BRMZ is available in a small MSOP package, providing additional flexibility for compact designs. Its low noise, high accuracy, and ease of use make it a popular choice for precision measurement applications.
Equivalent
The AD7791BRMZ chip is a low-power, 16-bit sigma-delta analog-to-digital converter (ADC) by Analog Devices. Equivalent products from other manufacturers include:
1. Texas Instruments ADS1115 – A 16-bit ADC with similar low-power features.
2. Microchip Technology MCP3421 – Another 18-bit variant offering comparable performance.
3. Maxim Integrated MAX11131 – Offers similar high-resolution data conversion.
These alternatives offer similar functionality, but specifications such as input types, resolution, and power consumption may vary slightly.
1. Texas Instruments ADS1115 – A 16-bit ADC with similar low-power features.
2. Microchip Technology MCP3421 – Another 18-bit variant offering comparable performance.
3. Maxim Integrated MAX11131 – Offers similar high-resolution data conversion.
These alternatives offer similar functionality, but specifications such as input types, resolution, and power consumption may vary slightly.
Features
The AD7791BRMZ is a low-power, 16-bit analog-to-digital converter (ADC) from Analog Devices. It is designed for precision measurement applications. Key features include:
1. Resolution: 16-bit, ensuring high precision in measurements.
2. Low Power: It has a low power consumption of typically 300 µA.
3. Single-Supply Operation: Operates from a single 2.7 V to 5.25 V supply voltage.
4. Low Noise: Offers excellent noise performance with a noise-free resolution of up to 16 bits.
5. Input Channels: Provides a simple 2-channel multiplexer with pseudo-differential inputs.
6. Programmable Gain: Includes a gain stage that can be configured with gains of 1 or 128.
7. On-Chip Features: Includes an on-chip clock, reference, and programmable excitation current sources.
8. Interface: Utilizes a simple serial interface for communication, compatible with SPI, QSPI, and MICROWIRE protocols.
9. Temperature Range: Designed to operate over a wide temperature range of -40°C to +105°C.
These features make the AD7791BRMZ suitable for applications like industrial control, weigh scales, and temperature measurement.
1. Resolution: 16-bit, ensuring high precision in measurements.
2. Low Power: It has a low power consumption of typically 300 µA.
3. Single-Supply Operation: Operates from a single 2.7 V to 5.25 V supply voltage.
4. Low Noise: Offers excellent noise performance with a noise-free resolution of up to 16 bits.
5. Input Channels: Provides a simple 2-channel multiplexer with pseudo-differential inputs.
6. Programmable Gain: Includes a gain stage that can be configured with gains of 1 or 128.
7. On-Chip Features: Includes an on-chip clock, reference, and programmable excitation current sources.
8. Interface: Utilizes a simple serial interface for communication, compatible with SPI, QSPI, and MICROWIRE protocols.
9. Temperature Range: Designed to operate over a wide temperature range of -40°C to +105°C.
These features make the AD7791BRMZ suitable for applications like industrial control, weigh scales, and temperature measurement.
Pinout
The AD7791BRMZ is a low power, low noise, complete analog front end for low frequency measurement applications. It is a precision 24-bit sigma-delta ADC. The AD7791BRMZ package features an 8-lead MSOP.
Here is a brief description of its pin functions:
1. VDD (Pin 1): Power supply pin.
2. AIN (+) (Pin 2): Positive analog input.
3. AIN (-) (Pin 3): Negative analog input.
4. GND (Pin 4): Analog ground reference.
5. SCLK (Pin 5): Serial clock input. Used to clock data in and out of the device.
6. DOUT/RDY (Pin 6): Data output/Ready output. Acts as data output line and also indicates conversion completion.
7. DIN (Pin 7): Data input pin for the serial interface.
8. CS (Pin 8): Chip select input. Used to select the device in systems with multiple devices on the SPI bus.
These functions are crucial for connecting the AD7791BRMZ to other components in a circuit, enabling it to perform its role as a precision ADC.
Here is a brief description of its pin functions:
1. VDD (Pin 1): Power supply pin.
2. AIN (+) (Pin 2): Positive analog input.
3. AIN (-) (Pin 3): Negative analog input.
4. GND (Pin 4): Analog ground reference.
5. SCLK (Pin 5): Serial clock input. Used to clock data in and out of the device.
6. DOUT/RDY (Pin 6): Data output/Ready output. Acts as data output line and also indicates conversion completion.
7. DIN (Pin 7): Data input pin for the serial interface.
8. CS (Pin 8): Chip select input. Used to select the device in systems with multiple devices on the SPI bus.
These functions are crucial for connecting the AD7791BRMZ to other components in a circuit, enabling it to perform its role as a precision ADC.
Manufacturer
The AD7791BRMZ is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design, manufacturing, and marketing of a broad portfolio of integrated circuits and signal processing solutions. The company provides products and technologies for analog and digital signal processing, which are used in various applications like industrial, automotive, communications, healthcare, and consumer electronics. Their offerings include data converters, amplifiers, power management products, radio frequency (RF) ICs, sensors, and sensor interfaces. With a strong emphasis on innovation, Analog Devices is known for its high-performance solutions that enable advancements in sensing, measuring, interpreting, connecting, and powering devices.
Application
The AD7791BRMZ is a low-power, low-noise, 24-bit sigma-delta ADC, which makes it suitable for a variety of precision measurement applications. Its primary application areas include:
1. Weigh Scales: Ideal for high-resolution weight measurement systems.
2. Temperature Measurement: Used in precision temperature sensors and monitoring equipment.
3. Pressure Sensors: Suitable for high-accuracy pressure measurement systems.
4. Industrial Process Control: For precise data acquisition in control systems.
5. Medical Instrumentation: Used in equipment requiring accurate and stable measurements, such as patient monitoring devices.
These applications benefit from the AD7791BRMZ's features like high resolution, low power consumption, and noise performance.
1. Weigh Scales: Ideal for high-resolution weight measurement systems.
2. Temperature Measurement: Used in precision temperature sensors and monitoring equipment.
3. Pressure Sensors: Suitable for high-accuracy pressure measurement systems.
4. Industrial Process Control: For precise data acquisition in control systems.
5. Medical Instrumentation: Used in equipment requiring accurate and stable measurements, such as patient monitoring devices.
These applications benefit from the AD7791BRMZ's features like high resolution, low power consumption, and noise performance.
Package
The AD7791BRMZ is housed in an MSOP-8 (Mini Small Outline Package with 8 leads) package. This compact package type is well-suited for applications requiring minimal board space.
