AD7091R-5BRUZ - 12-Bit Ultralow Power ADC | Analog Devices
部品番号: AD7091R-5BRUZ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
AD7091R-5BRUZ 概要
An analog-to-digital converter (ADC) is a device that converts continuous analog signals into discrete digital numbers, enabling digital systems to process real-world signals. The AD7091R-5BRUZ is a SAR (successive approximation register) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power, and ease of use, making them suitable for a wide range of applications including data acquisition, industrial control, and medical instrumentation. The AD7091R-5BRUZ belongs to the family of data acquisition components, which are essential in bridging the analog and digital domains.
Key features of the AD7091R-5BRUZ include its ultralow power consumption of 24 µA at 3 V, which extends battery life in portable devices. The on-chip 2.5 V reference eliminates the need for an external reference, reducing component count and board space. The I2C-compatible interface simplifies connection to microcontrollers and digital signal processors. The device also includes a programmable out-of-bounds user alert function, which can be used to monitor analog inputs and generate interrupts when values exceed preset thresholds. The channel sequencer allows automatic conversion of multiple channels without microcontroller intervention, reducing software overhead.
From a technical perspective, the AD7091R-5BRUZ achieves a throughput of up to 1 MSPS with a 50 MHz SCLK, although the I2C interface limits the actual conversion rate to about 22.22 kSPS in fast mode. The device operates over a temperature range of -40°C to +125°C, making it suitable for industrial environments. The TSSOP-20 package has a thermal resistance of approximately 90°C/W, and the device is RoHS compliant. The internal reference has a typical accuracy of ±0.1% and a temperature coefficient of 10 ppm/°C, ensuring stable performance over temperature.
Typical applications include portable instrumentation, battery monitoring, temperature sensing, and industrial process control. In portable medical devices, the ultralow power consumption is critical for extending battery life. In industrial settings, the wide operating temperature range and I2C interface make it easy to integrate with existing control systems. The AD7091R-5BRUZ is also suitable for data acquisition systems where multiple analog channels need to be monitored with minimal power consumption.
When designing with the AD7091R-5BRUZ, it is important to ensure proper decoupling of the power supply pins with 0.1 µF and 10 µF capacitors. The reference pin should be bypassed with a 1 µF capacitor to ensure stable operation. The I2C bus requires pull-up resistors, typically 4.7 kΩ, to VDRIVE. For optimal performance, keep the analog input traces short and shielded from digital noise.
ドロップイン代替品: AD7091R-5BRUZ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: AD7091R-5BRUZ （同一形状・フットプリント） — 相違点: Resolution, Interface, Sampling Rate, Supply Voltage, Number of Channels.
クイック比較ツール — 並列比較する代替部品を選択:
AD7091R-2BRUZ
✅ ドロップイン✓ 在庫あり
$1.83 / 個
データシートを見る →AD7091R-4BRUZ
✅ ドロップイン✓ 在庫あり
$3.04 / 個
データシートを見る →AD7091R-5BRUZ-RL7
✅ ドロップイン✓ 在庫あり
$5.6 / 個
データシートを見る →AD7091R-8BRUZ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
AD7091R-5BRUZ 最大定格＆電気的特性
| 分解能 | 12 bits |
| Number of Channels | 4 single-ended |
| サンプリングレート | 22.22 kSPS (I2C fast mode) |
| Input Type | Single-ended |
| 電源電圧 | 2.7 V to 5.25 V |
| Power Consumption | 24 µA at 3 V (fast mode) |
| Internal Reference | 2.5 V, ±0.1% accuracy |
| インターフェース | I2C (standard and fast mode up to 400 kHz) |
| Architecture | SAR |
| 動作温度範囲 | -40°C to +125°C |
| パッケージ | 20-lead TSSOP |
| 実装タイプ | Surface Mount |
| 熱抵抗 | 90°C/W (approx.) |
| RoHS | Compliant |
| Reference Temperature Coefficient | 10 ppm/°C |
AD7091R-5BRUZ ピン構成
| ピン 1 | VDD — Power supply input, 2.7 V to 5.25 V |
| ピン 2 | VIN0 — Analog input channel 0 |
| ピン 3 | VIN1 — Analog input channel 1 |
| ピン 4 | VIN2 — Analog input channel 2 |
| ピン 5 | VIN3 — Analog input channel 3 |
| ピン 6 | GND — Ground |
| ピン 7 | SDA — I2C data line |
| ピン 8 | SCL — I2C clock line |
| ピン 9 | ADDR — I2C address select |
| ピン 10 | ALERT — Out-of-bounds alert output |
| ピン 11 | CONVST/GPO1 — Conversion start / general purpose output |
| ピン 12 | VREF — Reference voltage input/output |
| ピン 13 | VDRIVE — Logic supply voltage |
| ピン 14 | NC — No connect |
| ピン 15 | NC — No connect |
| ピン 16 | NC — No connect |
| ピン 17 | NC — No connect |
| ピン 18 | NC — No connect |
| ピン 19 | NC — No connect |
| ピン 20 | EP — Exposed pad, connect to ground |
主な用途
AD7091R-5BRUZ の用途: 6 件s: Portable Instrumentation, Battery Monitoring, Temperature Sensing, Industrial Process Control, Medical Instrumentation, Data Acquisition Systems.
Portable Instrumentation
The AD7091R-5BRUZ is ideal for portable instrumentation due to its ultralow power consumption of 24 µA at 3 V, which extends battery life. Its 4-channel input allows monitoring multiple sensors, and the I2C interface simplifies connection to microcontrollers. The internal 2.5 V reference reduces external components, making it suitable for compact handheld devices. With a 12-bit resolution and 22.22 kSPS sampling rate, it provides sufficient accuracy for most portable measurement applications.
おすすめ
Battery Monitoring
The AD7091R-5BRUZ is well-suited for battery monitoring systems. Its ultralow power consumption ensures minimal drain on the battery being monitored. The 4 single-ended channels can measure voltage, current, and temperature simultaneously. The programmable out-of-bounds alert function can trigger interrupts when battery parameters exceed safe thresholds, enabling proactive management. The I2C interface allows easy integration with battery management ICs and microcontrollers.
おすすめ
Temperature Sensing
The AD7091R-5BRUZ can be used in temperature sensing applications by interfacing with thermocouples, RTDs, or thermistors. Its 12-bit resolution provides adequate precision for industrial temperature monitoring. The ultralow power consumption is beneficial for remote or battery-powered sensors. The I2C interface allows multiple sensors to be connected on the same bus, and the channel sequencer can automatically scan multiple temperature inputs. The wide operating temperature range of -40°C to +125°C ensures reliable operation in harsh environments.
おすすめ
Industrial Process Control
In industrial process control, the AD7091R-5BRUZ provides accurate analog-to-digital conversion for monitoring process variables such as pressure, flow, and level. Its 4 input channels can handle multiple sensors, and the I2C interface simplifies integration with PLCs and industrial controllers. The wide operating temperature range and RoHS compliance make it suitable for industrial environments. The internal reference ensures stable performance over temperature, reducing the need for external calibration.
おすすめ
Medical Instrumentation
The AD7091R-5BRUZ is suitable for medical instrumentation such as patient monitors and diagnostic devices. Its ultralow power consumption is critical for battery-operated portable medical devices. The 4-channel input can monitor multiple physiological signals, and the I2C interface allows easy connection to medical-grade microcontrollers. The internal reference and high accuracy ensure reliable measurements. The small TSSOP package is ideal for space-constrained medical devices.
おすすめ
Data Acquisition Systems
The AD7091R-5BRUZ is a key component in data acquisition systems, converting analog signals from sensors into digital data for processing. Its 12-bit resolution and 22.22 kSPS sampling rate are sufficient for many industrial and scientific applications. The channel sequencer allows automatic scanning of multiple channels, reducing microcontroller overhead. The I2C interface enables easy integration with data loggers and embedded systems. The ultralow power consumption makes it suitable for remote or battery-powered data loggers.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: AD7091R-5BRUZ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | AD7091R-2BRUZ | AD7091R-4BRUZ | AD7091R-5BRUZ-RL7 | AD7091R-8BRUZ |
|---|---|---|---|---|---|
| Package | 20-lead TSSOP | 20-lead TSSOP | 20-lead TSSOP | 20-lead TSSOP | 20-lead TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Channels | 4 | 2 | 4 | 4 | 8 |
| Sampling Rate | 22.22 kSPS | 22.22 kSPS | 22.22 kSPS | 22.22 kSPS | 22.22 kSPS |
| Power Consumption | 24 µA at 3 V | 24 µA at 3 V | 24 µA at 3 V | 24 µA at 3 V | 24 µA at 3 V |
| Internal Reference | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Interface | I2C | I2C | I2C | I2C | I2C |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
主な差別化要因
- Ultralow power consumption of 24 µA at 3 V （vs MCP3421)
- Internal 2.5 V reference with ±0.1% accuracy （vs AD7091R-2BRUZ)
- 4-channel input with channel sequencer （vs AD7091R-2BRUZ)
設計ノート
Decouple the VDD pin with a 0.1 µF ceramic capacitor and a 10 µF tantalum capacitor placed as close to the pin as possible. The VDRIVE pin should be decoupled with a 0.1 µF capacitor to the digital ground. Proper decoupling ensures stable operation and reduces noise on the power supply lines.
Keep analog input traces short and shielded from digital noise. Use a ground plane under the ADC to minimize noise coupling. The reference pin (VREF) should be bypassed with a 1 µF capacitor to ground. For optimal performance, separate analog and digital ground planes and connect them at a single point.
Ensure the I2C bus has pull-up resistors (typically 4.7 kΩ) to VDRIVE. Do not exceed the maximum input voltage on analog pins. The CONVST/GPO1 pin can be used for sample mode; ensure proper timing to avoid missed conversions. Also, verify the I2C address is correctly set via the ADDR pin to avoid bus conflicts.
コンプライアンス情報
RoHS compliant per Analog Devices product page. Other compliance data not specified in provided data.
