AD7124-4BRUZ-RL7 - 24-Bit Sigma-Delta ADC | Analog Devices
料号： AD7124-4BRUZ-RL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $13.6364 | $13.64 |
| 10 | $9.8485 | $98.49 |
| 100 | $8.7121 | $871.21 |
| 500 | $8.3333 | $4,166.65 |
| 1,000 | $7.9545 | $7,954.50 |
AD7124-4BRUZ-RL7 概述
An analog-to-digital converter (ADC) is a device that converts continuous analog signals into discrete digital numbers. The sigma-delta ADC architecture uses oversampling and noise shaping to achieve high resolution, making it ideal for precision measurement applications. The AD7124-4 is part of the ADC family, specifically a high-resolution, low-power sigma-delta converter, which is a key component in data acquisition systems, sensor interfaces, and industrial process control.
Key features of the AD7124-4BRUZ-RL7 include a 24-bit resolution, low noise performance (RMS noise as low as 1.8 uV at a gain of 128), and low power consumption (typically 1.1 mA in full power mode). The device also offers a 50 Hz/60 Hz rejection mode, a 24-bit sigma-delta modulator, and a flexible SPI interface. The integrated PGA allows direct connection to low-level sensors such as thermocouples, RTDs, and strain gauges, eliminating the need for external amplification.
The AD7124-4 uses a sigma-delta modulator with a digital filter, providing excellent noise performance and linearity. The device includes a precision, low noise, low drift internal band gap reference, and also accepts an external differential reference, which can be internally buffered. The ADC supports multiple power modes (full, mid, and low power) to optimize power consumption versus performance. The device is specified over the -40°C to +125°C temperature range, making it suitable for industrial and automotive applications.
Typical applications include temperature measurement (thermocouples, RTDs, thermistors), pressure measurement, flow measurement, and industrial process control. The AD7124-4 is also used in battery-powered instrumentation, portable medical devices, and smart transmitters. Its low power consumption and high resolution make it ideal for loop-powered applications.
When designing with the AD7124-4, ensure proper decoupling of the AVDD and DVDD supplies with 0.1 uF and 10 uF capacitors. The reference input should be bypassed with a 1 uF capacitor. For best noise performance, use a low-noise external reference if the internal reference is not sufficient. The SPI interface should be isolated if the ADC is used in noisy industrial environments.
直接替换替代料： AD7124-4BRUZ-RL7 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
AD7124-4BRUZ
✓ 有现货
$7.9545 / 个
查看数据手册 →AD7124-4BBCPZ-RL7
✓ 有现货
$28.6364 / 个
查看数据手册 →AD7190BRUZ
✓ 有现货
$7.6364 / 个
查看数据手册 →ADS124S08
📋 参考替代料（不在目录中）
ADS1262
✓ 有现货
$6.4 / 个
查看数据手册 →MCP3564
📋 参考替代料（不在目录中）
AD7124-4BRUZ-RL7 最大额定值与电气特性
| 分辨率 | 24 bit |
| Number of Channels | 4 differential or 7 single-ended/pseudo differential |
| Input Type | Differential, Single-Ended, Pseudo-Differential |
| Data Interface | SPI |
| 采样率 | 19.2 kSPS |
| Architecture | Sigma-Delta |
| Analog Supply Voltage | 2.7 V to 3.6 V |
| Digital Supply Voltage | 1.8 V to 3.6 V |
| PGA Gain | 1 to 128 |
| RMS Noise | 1.8 uV at gain 128 |
| Power Consumption | 1.1 mA typical in full power mode |
| Reference Type | Internal, External |
| 工作温度范围 | -40°C to +125°C |
| 封装 | 24-TSSOP |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| MSL 等级 | 1 (Unlimited) |
AD7124-4BRUZ-RL7 引脚配置
| 引脚 1 | AVDD — Analog power supply |
| 引脚 2 | AIN0 — Analog input 0 |
| 引脚 3 | AIN1 — Analog input 1 |
| 引脚 4 | AIN2 — Analog input 2 |
| 引脚 5 | AIN3 — Analog input 3 |
| 引脚 6 | AIN4 — Analog input 4 |
| 引脚 7 | AIN5 — Analog input 5 |
| 引脚 8 | AIN6 — Analog input 6 |
| 引脚 9 | REFIN+ — Positive reference input |
| 引脚 10 | REFIN- — Negative reference input |
| 引脚 11 | AVSS — Analog ground |
| 引脚 12 | DVDD — Digital power supply |
| 引脚 13 | DOUT/RDY — Serial data output / ready |
| 引脚 14 | DIN — Serial data input |
| 引脚 15 | SCLK — Serial clock input |
| 引脚 16 | CS — Chip select |
| 引脚 17 | SYNC — Synchronization input |
| 引脚 18 | P0 — General-purpose digital I/O |
| 引脚 19 | P1 — General-purpose digital I/O |
| 引脚 20 | P2 — General-purpose digital I/O |
| 引脚 21 | P3 — General-purpose digital I/O |
| 引脚 22 | DGND — Digital ground |
| 引脚 23 | REG — Regulator output |
| 引脚 24 | AVDD — Analog power supply |
典型应用
AD7124-4BRUZ-RL7 适用于 6 应用s: Temperature Measurement, Pressure Measurement, Industrial Process Control, Battery-Powered Instrumentation, Portable Medical Devices, Smart Transmitters.
Temperature Measurement
The AD7124-4BRUZ-RL7 is ideal for temperature measurement using thermocouples, RTDs, and thermistors. Its integrated PGA with gains up to 128 amplifies low-level sensor signals directly, eliminating external amplification. The 24-bit resolution and low noise (1.8 uV RMS at gain 128) ensure accurate temperature readings. The device supports 50 Hz/60 Hz rejection, reducing power line interference. With multiple input channels, it can monitor several temperature sensors simultaneously, making it suitable for industrial process control and HVAC systems.
推荐
Pressure Measurement
The AD7124-4BRUZ-RL7 is well-suited for pressure measurement applications using strain gauge or piezo-resistive sensors. The integrated PGA provides gains up to 128, amplifying the small output of bridge sensors to match the ADC's full-scale range. The device's low noise performance ensures high-resolution pressure readings, while its low power consumption (1.1 mA) is ideal for battery-powered or loop-powered transmitters. The SPI interface allows easy integration with microcontrollers for digital processing and calibration.
推荐
Industrial Process Control
In industrial process control, the AD7124-4BRUZ-RL7 provides high-accuracy analog-to-digital conversion for monitoring and control loops. Its 24-bit resolution and low noise ensure precise measurement of process variables such as temperature, pressure, and flow. The device's multiple input channels allow multiplexing of several sensors, reducing component count. The -40°C to +125°C operating range makes it suitable for harsh industrial environments. The SPI interface enables isolated communication in noisy factory settings.
推荐
Battery-Powered Instrumentation
The AD7124-4BRUZ-RL7 is optimized for battery-powered instrumentation due to its low power consumption of 1.1 mA in full power mode, with even lower power modes available. This makes it ideal for portable data loggers, handheld meters, and wireless sensor nodes. The integrated PGA and reference reduce external components, saving board space and power. The device can operate from a 2.7V supply, compatible with single-cell lithium batteries. Its high resolution ensures accurate measurements even with low-level signals.
推荐
Portable Medical Devices
The AD7124-4BRUZ-RL7 is suitable for portable medical devices such as patient monitors, glucose meters, and wearable health trackers. Its low power consumption extends battery life, while its high resolution and low noise ensure accurate physiological signal measurement. The integrated PGA allows direct connection to biosensors like ECG electrodes and temperature probes. The small 24-TSSOP package is ideal for space-constrained designs. The device's SPI interface simplifies integration with medical-grade microcontrollers.
推荐
Smart Transmitters
The AD7124-4BRUZ-RL7 is ideal for smart transmitters used in industrial automation and process control. Its low power consumption (1.1 mA) and wide operating temperature range (-40°C to +125°C) make it suitable for loop-powered transmitters that operate on 4-20 mA loops. The integrated PGA and reference reduce external component count, improving reliability. The device's 24-bit resolution ensures high accuracy for critical process variables. The SPI interface allows digital configuration and communication with host systems.
推荐
推荐产品汇总
工程参考数据： AD7124-4BRUZ-RL7 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | AD7124-4BRUZ | AD7190BRUZ | ADS124S08 |
|---|---|---|---|---|
| Package | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit |
| Number of Channels | 4 differential / 7 single-ended | 4 differential / 7 single-ended | 2 differential / 4 single-ended | 4 differential / 8 single-ended |
| Max Data Rate | 19.2 kSPS | 19.2 kSPS | 4.8 kSPS | 4 kSPS |
| PGA Gain | 1 to 128 | 1 to 128 | 1 to 128 | 1 to 128 |
| RMS Noise (gain 128) | 1.8 uV | 1.8 uV | 1.5 uV | 2.0 uV |
| Power Consumption | 1.1 mA | 1.1 mA | 6.5 mA | 2.5 mA |
| Interface | SPI | SPI | SPI | SPI |
关键差异点
- Integrated PGA with gains up to 128 （对比 AD7190BRUZ)
- Low power consumption (1.1 mA) （对比 AD7190BRUZ)
- Multiple input channels (4 differential / 7 single-ended) （对比 ADS124S08)
设计说明
Decouple AVDD and DVDD with 0.1 uF and 10 uF capacitors placed close to the pins. Use separate analog and digital ground planes to minimize noise coupling. The device operates from 2.7V to 3.6V analog supply and 1.8V to 3.6V digital supply; ensure stable supplies within these ranges.
For best noise performance, use a low-noise external reference if the internal reference is not sufficient. Bypass the reference input with a 1 uF capacitor. Keep analog input traces short and shielded to reduce interference. Follow the layout guidelines in the AD7124-4 datasheet for optimal performance.
The SPI interface should be isolated if the ADC is used in noisy industrial environments. Use digital isolators like ADuM1201 to prevent ground loops. Ensure the SYNC pin is properly handled to avoid data corruption. Also, configure the device's power mode appropriately to balance power consumption and performance.
合规信息
RoHS3 compliant and REACH unaffected per PartGenie. MSL 1 (Unlimited).
