AD7091R-2BRUZ - 12-Bit 1MSPS SAR ADC | Analog Devices
MPN： AD7091R-2BRUZ ✓ 啟用中AD7091R-2BRUZ 概覽
A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high speed, low power consumption, and ease of use, making it ideal for applications such as data acquisition, industrial control, and portable instrumentation. The AD7091R-2 is part of the AD7091R family, which includes 2-, 4-, and 8-channel versions, all sharing the same core architecture and performance characteristics.
Key features of the AD7091R-2BRUZ include ultralow power consumption (typically 367 µA at 3V and 1 MSPS), a wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 1.5 MHz, and an on-chip conversion clock that simplifies system design. The device also includes a channel sequencer that allows preprogrammed selection of channels to be converted sequentially, enhancing flexibility in multi-channel applications.
The AD7091R-2BRUZ uses a SAR architecture with an internal reference and a high-speed serial interface that supports data read after conversion, achieving a 1 MSPS throughput rate with a 50 MHz SCLK. The device is designed for low power and high accuracy, with a typical power dissipation of less than 2 mW at 3V, making it suitable for battery-powered and portable applications.
Typical applications include battery monitoring, data acquisition systems, industrial process control, and portable instrumentation. The wide input bandwidth and low power consumption make it ideal for applications requiring high-speed, low-power analog-to-digital conversion.
When designing with this device, ensure that the analog input voltage does not exceed the supply voltage and that adequate decoupling capacitors are placed near the power supply pins. The SPI interface should be configured for the correct clock polarity and phase to ensure reliable data transfer.
直接替換替代品，適用於 AD7091R-2BRUZ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： AD7091R-2BRUZ （相同外形與佔位） — 差異在於 Package, Interface, Number of Channels, Internal Reference, Input Type.
AD7091R-2BRUZ-RL7
✅ 直接替換📋 參考替代品（不在目錄中）
AD7091R-4BRUZ
⚡ 相同封裝✗ 缺貨
$3.04 / 單位
查看資料表 →AD7091R-8BRUZ
⚡ 相同封裝📋 參考替代品（不在目錄中）
AD7091R-5BRUZ-RL7
⚡ 相同封裝聯絡詢價
查看資料表 →AD7091R-2BRUZ-RL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD7091R-2BRUZ 最大額定值與電氣特性
| 解析度 | 12 bits |
| Number of Channels | 2 |
| 取樣率 | 1 MSPS |
| Input Type | Single-ended |
| 供應電壓 | 2.7 V to 5.25 V |
| Power Consumption | 1.4 mW at 1 MSPS (typical) |
| Power-Down Current | 550 nA typical at VDD = 5.25 V, 435 nA typical at VDD = 3 V |
| Input Bandwidth | 1.5 MHz (track-and-hold) |
| Reference Type | Internal 2.5 V |
| 介面 | SPI |
| 封裝 | 16-lead TSSOP |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Number of Inputs | 2 |
AD7091R-2BRUZ 腳位配置
| 腳位 1 | VDD — Power supply input, 2.7V to 5.25V |
| 腳位 2 | VIN0 — Analog input channel 0 |
| 腳位 3 | VIN1 — Analog input channel 1 |
| 腳位 4 | GND — Ground |
| 腳位 5 | SCLK — Serial clock input for SPI |
| 腳位 6 | SDI — Serial data input for SPI |
| 腳位 7 | SDO — Serial data output for SPI |
| 腳位 8 | CS — Chip select (active low) |
| 腳位 9 | GND — Ground |
| 腳位 10 | VREF — Reference voltage output (2.5V internal) |
| 腳位 11 | ALERT — Alert output for out-of-range detection |
| 腳位 12 | CONVST — Conversion start input |
| 腳位 13 | GND — Ground |
| 腳位 14 | VDD — Power supply input |
| 腳位 15 | NC — No connect |
| 腳位 16 | NC — No connect |
典型應用
AD7091R-2BRUZ 適用於 6 應用s: Battery Monitoring, Data Acquisition Systems, Industrial Process Control, Portable Instrumentation, Medical Monitoring, IoT Sensors.
Battery Monitoring
The AD7091R-2BRUZ's ultralow power consumption (1.4 mW at 1 MSPS) and wide supply range (2.7V to 5.25V) make it ideal for battery-powered devices. It can monitor battery voltage and current with high accuracy, extending battery life. The power-down mode (550 nA) further reduces power when idle. Its SPI interface allows easy integration with microcontrollers for real-time battery management.
推薦
Data Acquisition Systems
With a 1 MSPS sampling rate and 12-bit resolution, the AD7091R-2BRUZ is well-suited for high-speed data acquisition systems. Its wide input bandwidth (1.5 MHz) allows accurate capture of fast-changing signals. The internal 2.5V reference simplifies design, and the SPI interface enables high-speed data transfer to DSPs or FPGAs. It is ideal for industrial data loggers and test equipment.
推薦
Industrial Process Control
The AD7091R-2BRUZ operates from 2.7V to 5.25V, making it compatible with industrial supply rails. Its low power consumption and small 16-lead TSSOP package are ideal for space-constrained control modules. The device can monitor process variables such as temperature and pressure with high accuracy. The SPI interface allows easy connection to industrial microcontrollers for closed-loop control.
推薦
Portable Instrumentation
The ultralow power consumption (1.4 mW at 1 MSPS) and power-down mode (550 nA) make the AD7091R-2BRUZ perfect for portable instruments. Its small 16-lead TSSOP package saves board space, and the internal reference reduces external component count. The device can operate from a single 3V battery, making it ideal for handheld multimeters and portable data loggers.
推薦
Medical Monitoring
The AD7091R-2BRUZ's low power and high accuracy make it suitable for medical monitoring devices such as patient monitors and wearable health trackers. Its 12-bit resolution provides sufficient precision for vital sign monitoring. The wide supply range allows operation from battery or USB power. The SPI interface enables seamless integration with medical-grade microcontrollers for data processing and transmission.
推薦
IoT Sensors
The AD7091R-2BRUZ is ideal for IoT sensor nodes that require low power and high accuracy. Its 1 MSPS sampling rate allows fast data acquisition, while the power-down mode (550 nA) conserves energy during idle periods. The small package and SPI interface make it easy to integrate with wireless microcontrollers. It is suitable for smart home sensors, environmental monitoring, and industrial IoT applications.
推薦
推薦產品摘要
工程參考資料，適用於 AD7091R-2BRUZ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | AD7091R-2BRUZ-RL7 | AD7091R-4BRUZ | AD7091R-8BRUZ |
|---|---|---|---|---|
| Package | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP | 16-lead TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits |
| Number of Channels | 2 | 2 | 4 | 8 |
| Sampling Rate | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS |
| Supply Voltage | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V |
| Power Consumption | 1.4 mW at 1 MSPS | 1.4 mW at 1 MSPS | 1.4 mW at 1 MSPS | 1.4 mW at 1 MSPS |
| Interface | SPI | SPI | SPI | SPI |
主要差異化特點
- Ultralow power consumption (對比AD7091R-4BRUZ)
- Pin-compatible with tape-and-reel variant (對比AD7091R-2BRUZ-RL7)
- Small package size (對比AD7091R-8BRUZ)
設計說明
The AD7091R-2BRUZ operates from 2.7V to 5.25V. Use a low-noise LDO to supply VDD and place a 0.1uF and 10uF decoupling capacitor close to the VDD pin. The power-down mode reduces current to 550 nA at 5.25V, so implement a control signal to enter power-down when idle to extend battery life.
Place the AD7091R-2BRUZ close to the signal source to minimize trace inductance. Use a solid ground plane and separate analog and digital grounds if possible. Keep SPI traces short and avoid routing them near high-speed digital lines to reduce noise coupling. Refer to the datasheet layout guidelines for optimal performance.
Ensure the analog input voltage does not exceed VDD or go below GND to avoid damaging the ADC. The internal reference is 2.5V, so the input range is 0V to 2.5V. Use a buffer amplifier if the source impedance is high. Configure the SPI interface with correct clock polarity and phase (CPOL=0, CPHA=1) as per the datasheet.
合規資訊
RoHS compliance is indicated by the 'Z' suffix in the part number. Other compliance details are not specified in the provided data.
