ADAQ7769-1BCPZ - 24-Bit 1MSPS μModule DAQ | Analog Devices
MPN： ADAQ7769-1BCPZ ✓ 啟用中ADAQ7769-1BCPZ 概覽
A data acquisition system (DAQ) is a device that samples analog signals and converts them to digital data for processing. The ADAQ7769-1 is a μModule (micro-module) DAQ, which means it encapsulates multiple functions—such as the input buffer, PGA, ADC, and reference—into one package. This integration simplifies design, reduces board space, and improves performance by minimizing parasitic effects. The μModule approach is part of a broader hierarchy: DAQ system → μModule → signal chain → analog-to-digital converter (ADC) → semiconductor. By integrating the entire signal chain, the ADAQ7769-1 reduces the need for external components and simplifies the design process.
Key features of the ADAQ7769-1 include a high input impedance of 1 GΩ, a programmable gain of 0.1 to 64, and an alias-free digital filter that eliminates the need for external anti-aliasing filters. The device also supports a wide input voltage range of ±24 V, making it suitable for high-voltage sensing applications. The integrated reference buffer provides a low-noise, high-impedance reference input, ensuring accurate conversions. The device operates from a single 5 V supply and features a flexible SPI interface for configuration and data transfer.
Technically, the ADAQ7769-1 uses a delta-sigma (ΔΣ) ADC architecture with a digital filter that provides alias-free operation. The device includes a precharge reference buffer and a full reference buffer, allowing the user to choose between ease of driving and high impedance. The device supports two configuration methods: register writes via SPI or hardware pin strapping for predefined modes. This flexibility simplifies integration into various systems. The device is specified for operation over the industrial temperature range of -40°C to +105°C.
Typical applications include vibration monitoring, motor control, power quality analysis, and precision instrumentation. The high input impedance and programmable gain make it ideal for interfacing directly with sensors such as accelerometers and strain gauges. The alias-free operation ensures accurate measurement of high-frequency signals without the need for external filters.
When designing with the ADAQ7769-1, it is important to provide a clean, low-noise power supply and a stable reference voltage. The device's integrated reference buffer simplifies reference driving, but external decoupling capacitors are recommended for optimal performance. Additionally, the SPI interface should be properly terminated to avoid signal integrity issues.
直接替換替代品，適用於 ADAQ7769-1BCPZ — 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。
ADAQ7769-1BBCZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADAQ7769-1BCPZ 最大額定值與電氣特性
| 解析度 | 24 bits |
| Sample Rate | 1 MSPS |
| Input Impedance | 1 GΩ |
| Programmable Gain | 0.1 to 64 |
| 輸入電壓範圍 | ±24 V |
| 參考電壓 | 4.096 V (typical) |
| 供應電壓 | 5 V |
| 介面 | SPI |
| 封裝 | 84-CSPBGA (12x6) |
| 工作溫度 | -40°C to +105°C |
| Number of Channels | 1 |
| Architecture | Delta-Sigma |
| Alias-Free | Yes |
| Reference Buffer | Precharge and full buffer |
| Configuration | SPI or pin strapping |
ADAQ7769-1BCPZ 腳位配置
| 腳位 A1 | VDD_ADC — ADC power supply |
| 腳位 A2 | GND — Ground |
| 腳位 A3 | AINP — Positive analog input |
| 腳位 A4 | AINM — Negative analog input |
| 腳位 B1 | VDD_PGA — PGA power supply |
| 腳位 B2 | GND — Ground |
| 腳位 B3 | REFIN — Reference input |
| 腳位 B4 | REFOUT — Reference output |
| 腳位 C1 | SCLK — SPI clock |
| 腳位 C2 | SDI — SPI data input |
| 腳位 C3 | SDO — SPI data output |
| 腳位 C4 | CS — Chip select |
典型應用
ADAQ7769-1BCPZ 適用於 6 應用s: Vibration Monitoring, Motor Control, Power Quality Analysis, Precision Instrumentation, Test and Measurement, Industrial Automation.
Vibration Monitoring
The ADAQ7769-1BCPZ is ideal for vibration monitoring due to its high input impedance (1 GΩ) and programmable gain (0.1 to 64), allowing direct connection to accelerometers. The alias-free digital filter eliminates the need for external anti-aliasing filters, simplifying the signal chain. With a 1 MSPS sample rate, it can capture high-frequency vibration signals accurately. The integrated reference buffer ensures stable conversions, and the compact μModule package saves board space in multi-channel systems.
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Motor Control
In motor control, the ADAQ7769-1BCPZ provides precise current and voltage sensing with its ±24 V input range and 24-bit resolution. The programmable gain allows optimization for different sensor outputs, while the high input impedance minimizes loading on the sensing elements. The alias-free operation ensures accurate measurement of PWM signals without external filters. The SPI interface enables fast data transfer to the controller, and the μModule package reduces design complexity in space-constrained drives.
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Power Quality Analysis
The ADAQ7769-1BCPZ is well-suited for power quality analysis, where accurate measurement of voltage and current waveforms is critical. Its 24-bit resolution and 1 MSPS sample rate capture harmonics and transients with high fidelity. The high input impedance allows direct connection to voltage dividers, and the programmable gain accommodates various signal levels. The alias-free filter ensures no aliasing of high-frequency noise, and the integrated reference buffer maintains accuracy over temperature.
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Precision Instrumentation
For precision instrumentation, the ADAQ7769-1BCPZ offers a complete signal chain in a single package, reducing noise and drift. Its 24-bit resolution and low noise performance make it ideal for measuring small signals from sensors like strain gauges and thermocouples. The programmable gain (0.1 to 64) allows amplification of weak signals, while the high input impedance prevents loading. The compact μModule design simplifies PCB layout and reduces time-to-market for benchtop instruments.
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Test and Measurement
In test and measurement equipment, the ADAQ7769-1BCPZ provides high-speed, high-resolution data acquisition for capturing transient signals. Its 1 MSPS sample rate and 24-bit resolution enable detailed analysis of waveforms. The alias-free digital filter simplifies the design by removing the need for external anti-aliasing filters. The device's flexible SPI interface allows easy integration with FPGAs or microcontrollers, and the μModule package reduces board space in multi-channel systems.
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Industrial Automation
The ADAQ7769-1BCPZ is suitable for industrial automation, where reliable and accurate data acquisition is essential. Its wide input range (±24 V) and high input impedance make it compatible with various industrial sensors. The programmable gain allows adaptation to different signal levels, and the alias-free operation ensures accurate measurement in noisy environments. The device's robust design and industrial temperature range (-40°C to +105°C) make it suitable for harsh conditions.
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推薦產品摘要
工程參考資料，適用於 ADAQ7769-1BCPZ — 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 | ADAQ7769-1BBCZ | AD7768-1BCPZ | AD7176-2BRUZ |
|---|---|---|---|---|
| Package | 84-CSPBGA (12x6) | 84-CSPBGA (12x6) | 28-LFCSP | 24-TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 24 bits | 24 bits | 24 bits | 24 bits |
| Sample Rate | 1 MSPS | 1 MSPS | 1.024 MSPS | 250 kSPS |
| Programmable Gain | 0.1 to 64 | 0.1 to 64 | None | None |
| Input Voltage Range | ±24 V | ±24 V | ±VREF | ±VREF |
| Interface | SPI | SPI | SPI | SPI |
主要差異化特點
- Integrated signal chain in a single package (對比AD7768-1BCPZ)
- High input impedance (1 GΩ) (對比AD7176-2BRUZ)
- Programmable gain up to 64 (對比AD7768-1BCPZ)
設計說明
Provide a clean, low-noise power supply for the ADAQ7769-1BCPZ. Use a low-dropout regulator (LDO) such as the ADP151 to supply the 5V rail, and place 10µF and 0.1µF decoupling capacitors close to the VDD pins. Avoid sharing the supply with digital circuits to prevent noise coupling.
For optimal performance, use a solid ground plane and separate analog and digital ground areas. Place the reference decoupling capacitors (10µF and 0.1µF) as close as possible to the REFIN and REFOUT pins. Route analog inputs away from digital traces to minimize crosstalk.
Ensure the reference voltage is stable and within the specified range (1V to VDD_ADC). Use a precision reference like the ADR4550 for best accuracy. Also, configure the device correctly via SPI or pin strapping to avoid unexpected operation. Refer to the datasheet for proper initialization sequences.
合規資訊
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
