AD5381BSTZ-3 - 40-Channel 12-Bit DAC | Analog Devices
MPN： AD5381BSTZ-3 ✓ 啟用中AD5381BSTZ-3 概覽
A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. In the hierarchy of signal processing, a DAC is a key element in the data converter family, which also includes analog-to-digital converters (ADCs). DACs are essential in systems where digital processing must interface with the analog world, such as in audio playback, motor control, and instrumentation. The AD5381 is a dense DAC, integrating 40 channels in a single package, which reduces board space and simplifies multi-channel systems.
Key features of the AD5381BSTZ-3 include 12-bit resolution, 40 independent output channels, a settling time of 8 µs, and a programmable internal reference with 10 ppm/°C drift. The device also offers a power-on reset to zero-scale or midscale, and a clear function to reset outputs. The rail-to-rail output amplifiers allow the outputs to swing close to the supply rails, maximizing dynamic range. The channel monitor function simplifies system diagnostics by allowing external monitoring of any channel.
Technically, the AD5381 uses a resistor-string architecture with an output buffer for each channel, ensuring monotonicity and low glitch. The device supports both serial and parallel interfaces, with the SER/PAR pin selecting the mode. In serial mode, the SPI/I2C pin (Pin 97) must be tied low for SPI-compatible operation. The internal reference can be programmed to 1.25 V or 2.5 V via the control register, but operating with 2.5 V reference degrades accuracy and limits input code range, as noted in the datasheet.
Typical applications include industrial process control, automated test equipment, multi-channel data acquisition systems, and precision instrumentation. The 40-channel density and 3 V operation make it ideal for systems requiring many analog outputs with minimal power consumption. The device's rail-to-rail outputs and programmable reference enhance flexibility in various voltage domains.
When designing with the AD5381BSTZ-3, ensure adequate decoupling on the AVDD and DVDD supplies, and consider the reference voltage selection carefully to meet accuracy requirements. The channel monitor function can be used for system-level calibration and fault detection.
直接替換替代品，適用於 AD5381BSTZ-3 — 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： AD5381BSTZ-3 （相同外形與佔位） — 差異在於 Supply Voltage, Resolution, Internal Reference, Settling Time, Number of Channels.
AD5381BSTZ-5
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD5371BSTZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD5372BSTZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD5380BSTZ-3
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD5381BSTZ-3
✅ 直接替換聯絡詢價
查看資料表 →AD5381BSTZ-3 最大額定值與電氣特性
| 解析度 | 12 bits |
| Number of Channels | 40 |
| 供應電壓 | 3 V single supply |
| Settling Time | 8 µs |
| 輸出類型 | Voltage - buffered |
| Output Amplifier | Rail-to-rail |
| Internal Reference | 1.25 V (default), programmable to 2.5 V |
| Reference Temperature Coefficient | 10 ppm/°C |
| 介面 | Parallel, SPI, DSP, MICROWIRE |
| 封裝 | 100-lead LQFP (14x14 mm) |
| 工作溫度範圍 | -40°C to +85°C |
| Power-On Reset | Zero-scale or midscale |
| Channel Monitor | Yes (MON_OUT pin) |
| RoHS | Compliant |
| 安裝類型 | Surface Mount |
AD5381BSTZ-3 腳位配置
| 腳位 1 | VOUT0 — Analog output channel 0 |
| 腳位 2 | VOUT1 — Analog output channel 1 |
| 腳位 3 | VOUT2 — Analog output channel 2 |
| 腳位 4 | VOUT3 — Analog output channel 3 |
| 腳位 5 | VOUT4 — Analog output channel 4 |
| 腳位 6 | VOUT5 — Analog output channel 5 |
| 腳位 7 | VOUT6 — Analog output channel 6 |
| 腳位 8 | VOUT7 — Analog output channel 7 |
| 腳位 9 | VOUT8 — Analog output channel 8 |
| 腳位 10 | VOUT9 — Analog output channel 9 |
| 腳位 11 | VOUT10 — Analog output channel 10 |
| 腳位 12 | VOUT11 — Analog output channel 11 |
| 腳位 13 | VOUT12 — Analog output channel 12 |
| 腳位 14 | VOUT13 — Analog output channel 13 |
| 腳位 15 | VOUT14 — Analog output channel 14 |
| 腳位 16 | VOUT15 — Analog output channel 15 |
| 腳位 17 | VOUT16 — Analog output channel 16 |
| 腳位 18 | VOUT17 — Analog output channel 17 |
| 腳位 19 | VOUT18 — Analog output channel 18 |
| 腳位 20 | VOUT19 — Analog output channel 19 |
| 腳位 21 | VOUT20 — Analog output channel 20 |
| 腳位 22 | VOUT21 — Analog output channel 21 |
| 腳位 23 | VOUT22 — Analog output channel 22 |
| 腳位 24 | VOUT23 — Analog output channel 23 |
| 腳位 25 | VOUT24 — Analog output channel 24 |
| 腳位 26 | VOUT25 — Analog output channel 25 |
| 腳位 27 | VOUT26 — Analog output channel 26 |
| 腳位 28 | VOUT27 — Analog output channel 27 |
| 腳位 29 | VOUT28 — Analog output channel 28 |
| 腳位 30 | VOUT29 — Analog output channel 29 |
| 腳位 31 | VOUT30 — Analog output channel 30 |
| 腳位 32 | VOUT31 — Analog output channel 31 |
| 腳位 33 | VOUT32 — Analog output channel 32 |
| 腳位 34 | VOUT33 — Analog output channel 33 |
| 腳位 35 | VOUT34 — Analog output channel 34 |
| 腳位 36 | VOUT35 — Analog output channel 35 |
| 腳位 37 | VOUT36 — Analog output channel 36 |
| 腳位 38 | VOUT37 — Analog output channel 37 |
| 腳位 39 | VOUT38 — Analog output channel 38 |
| 腳位 40 | VOUT39 — Analog output channel 39 |
| 腳位 41 | AVDD — Analog power supply |
| 腳位 42 | AVSS — Analog ground |
| 腳位 43 | DVDD — Digital power supply |
| 腳位 44 | DGND — Digital ground |
| 腳位 45 | REFIN/REFOUT — Reference input/output |
| 腳位 46 | MON_OUT — Channel monitor output |
| 腳位 47 | SER/PAR — Serial/parallel interface select |
| 腳位 48 | SPI/I2C — SPI or I2C select (pin 97) |
| 腳位 49 | SCLK — Serial clock |
| 腳位 50 | SDIN — Serial data input |
| 腳位 51 | SYNC — Frame synchronization |
| 腳位 52 | LDAC — Load DAC |
| 腳位 53 | CLR — Clear |
| 腳位 54 | RESET — Reset |
| 腳位 55 | A0-A9 — Address inputs |
| 腳位 56 | DB0-DB11 — Parallel data inputs |
| 腳位 57 | CS — Chip select |
| 腳位 58 | WR — Write |
| 腳位 59 | RD — Read |
| 腳位 60 | BUSY — Busy output |
典型應用
AD5381BSTZ-3 適用於 6 應用s: Industrial Process Control, Automated Test Equipment (ATE), Multi-Channel Data Acquisition Systems, Precision Instrumentation, Medical Equipment, Audio Test and Measurement.
Industrial Process Control
The AD5381BSTZ-3 provides 40 independent 12-bit analog outputs for controlling valves, actuators, and setpoints in industrial automation. Its 3 V single-supply operation and rail-to-rail outputs allow direct interface with low-voltage control loops. The 8 µs settling time enables fast updates for real-time process adjustments. The channel monitor function simplifies system diagnostics by allowing external monitoring of any output. With a programmable internal reference, the device can be calibrated for various industrial signal ranges, making it ideal for PLCs and distributed control systems.
推薦
Automated Test Equipment (ATE)
In ATE, the AD5381BSTZ-3 generates precise analog stimulus voltages for testing DUTs. Its 40 channels allow simultaneous stimulation of multiple pins, reducing test time. The 12-bit resolution and 8 µs settling time provide accurate and fast signal generation. The rail-to-rail outputs ensure full-scale voltage coverage. The channel monitor function enables real-time verification of output levels. The device's serial interface simplifies integration with FPGA-based test controllers. Its industrial temperature range ensures reliable operation in test environments.
推薦
Multi-Channel Data Acquisition Systems
The AD5381BSTZ-3 is ideal for data acquisition systems requiring many analog outputs, such as waveform generators and programmable voltage sources. Its 40 channels provide high density, reducing board space. The 3 V supply is compatible with low-power systems. The internal reference with 10 ppm/°C drift ensures stable output over temperature. The channel monitor allows output verification. The device's parallel interface enables high-speed updates for dynamic waveforms. The rail-to-rail outputs maximize dynamic range for signal generation.
推薦
Precision Instrumentation
In precision instruments like calibrators and signal generators, the AD5381BSTZ-3 provides accurate analog outputs. Its 12-bit resolution and low drift reference ensure high accuracy. The 40 channels allow multiple independent outputs for complex test setups. The rail-to-rail outputs provide wide voltage swings. The channel monitor function aids in calibration. The device's small LQFP package saves space in benchtop instruments. The industrial temperature range ensures stability in lab environments.
推薦
Medical Equipment
The AD5381BSTZ-3 can be used in medical devices requiring multiple analog outputs, such as patient monitoring systems and diagnostic equipment. Its 3 V operation is suitable for battery-powered devices. The 40 channels allow control of multiple parameters. The rail-to-rail outputs interface with various actuators. The channel monitor function enables safety checks. The device's low power consumption extends battery life. The industrial temperature range covers medical environments.
推薦
Audio Test and Measurement
The AD5381BSTZ-3 can generate multiple analog test signals for audio equipment testing. Its 40 channels allow simultaneous testing of multi-channel audio systems. The 12-bit resolution provides adequate signal fidelity for many test applications. The 8 µs settling time enables fast frequency sweeps. The rail-to-rail outputs drive audio inputs directly. The channel monitor function allows output verification. The device's serial interface simplifies integration with audio test software.
推薦
推薦產品摘要
工程參考資料，適用於 AD5381BSTZ-3 — 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 | AD5381BSTZ-5 | AD5371BSTZ | AD5372BSTZ | AD5380BSTZ-3 |
|---|---|---|---|---|---|
| Package | 100-lead LQFP (14x14 mm) | 100-lead LQFP (14x14 mm) | 100-lead LQFP (14x14 mm) | 100-lead LQFP (14x14 mm) | 100-lead LQFP (14x14 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bits | 12 bits | 14 bits | 14 bits | 14 bits |
| Number of Channels | 40 | 40 | 40 | 32 | 40 |
| Supply Voltage | 3 V | 5 V | 3 V or 5 V | 3 V or 5 V | 3 V |
| Settling Time | 8 µs | 8 µs | 8 µs | 8 µs | 8 µs |
| Internal Reference | 1.25 V (default), programmable to 2.5 V | 1.25 V (default), programmable to 2.5 V | 1.25 V (default), programmable to 2.5 V | 1.25 V (default), programmable to 2.5 V | 1.25 V (default), programmable to 2.5 V |
| Interface | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE |
主要差異化特點
- 40-channel density in a 100-lead LQFP (對比AD5372BSTZ)
- 12-bit resolution with 8 µs settling time (對比AD5371BSTZ)
- 3 V single-supply operation (對比AD5381BSTZ-5)
設計說明
The AD5381BSTZ-3 requires a 3 V analog supply (AVDD) and a digital supply (DVDD). Ensure adequate decoupling with 0.1 µF and 10 µF capacitors close to the AVDD and DVDD pins. The reference pin (REFIN/REFOUT) should be decoupled with a 1 µF capacitor to ground. Proper power supply sequencing is recommended to avoid latch-up.
For optimal performance, place the AD5381BSTZ-3 on a PCB with a solid ground plane. Keep analog and digital grounds separate and connect them at a single point. Route analog output traces away from digital signals to minimize noise coupling. Use short, wide traces for power and ground to reduce inductance.
When using the serial interface, ensure the SER/PAR pin is tied high and the SPI/I2C pin (Pin 97) is tied low for SPI mode. Do not operate the device with a 2.5 V reference if you require full accuracy, as the datasheet warns of degraded accuracy and limited input code range. Always verify the reference voltage setting in the control register.
合規資訊
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
