AD5381BSTZ-5KL2 - 40-Channel 12-Bit DAC | Analog Devices
MPN: AD5381BSTZ-5KL2 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $25.43 | $25.43 |
| 10 | $23.12 | $231.20 |
| 100 | $20.87 | $2,087.00 |
| 500 | $18.56 | $9,280.00 |
| 1,000 | $16.34 | $16,340.00 |
AD5381BSTZ-5KL2 Overview
A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD5381 is a denseDAC, integrating 40 DAC channels in a single package, which reduces board space and system cost compared to using multiple lower-channel-count DACs. It belongs to the family of data converters, which are essential in bridging the digital and analog domains in mixed-signal systems. The AD5381's high channel density and integrated reference make it a key component in multichannel control and calibration systems.
Key features of the AD5381BSTZ-5KL2 include 12-bit resolution, 40 independent output channels, rail-to-rail output amplifiers, and a programmable reference. The device offers a settling time of 8 µs typical, ensuring fast response in dynamic applications. It also includes a power-on reset to zero-scale, ensuring safe startup conditions. The channel monitor function allows external monitoring of any channel without disturbing the output, which is valuable for system diagnostics.
Technically, the AD5381 uses a segmented architecture with an internal precision reference, achieving excellent linearity and low noise. The device operates over a temperature range of -40°C to +105°C, making it suitable for industrial environments. The LQFP-100 package provides a compact footprint while allowing adequate thermal dissipation. The digital interface supports both parallel and serial modes, with the SER/PAR pin selecting the mode, and the SPI/I2C pin (Pin 97) enabling the serial interface when tied low.
Typical applications include industrial process control (e.g., valve and actuator control), automatic test equipment (ATE) for precise voltage generation, and medical instrumentation such as patient monitoring systems. The AD5381's 40 channels allow it to drive multiple analog outputs simultaneously, reducing component count and improving system reliability.
When designing with the AD5381, ensure proper decoupling of the AVDD and DVDD supplies with 10 µF and 0.1 µF capacitors placed close to the pins. The reference output should be buffered if external loads are connected. The MON_OUT pin can be used to monitor channel outputs, but care must be taken to avoid loading the monitored channel.
Drop-in alternatives for AD5381BSTZ-5KL2 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AD5381BSTZ-5KL2 (same form factor and footprint) — differing in Internal Reference, Supply Voltage, Resolution, Operating Temperature Range, Power-On Reset.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD5381BSTZ-5
✅ Drop-In✓ In Stock
$15.9 / Unit
View Datasheet →AD5381BSTZ-3
✅ Drop-In✓ In Stock
$46.83 / Unit
View Datasheet →AD5380BSTZ-5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD5382BSTZ-5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD5383BSTZ-5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD5384BSTZ-5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD5381BSTZ-5KL2 Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Number of Channels | 40 |
| Supply Voltage | 5 V single supply |
| Output Type | Voltage - buffered |
| Output Amplifier | Rail-to-rail |
| Internal Reference | 1.25 V / 2.5 V programmable, 10 ppm/°C |
| Settling Time | 8 µs typical |
| Interface | Parallel, SPI, DSP, MICROWIRE |
| Package | 100-lead LQFP (14x14 mm) |
| Operating Temperature Range | -40°C to +105°C |
| Power-On Reset | Zero-scale |
| Channel Monitor | Yes (MON_OUT pin) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD5381BSTZ-5KL2 Pin Configuration
| Pin 1 | VOUT0 — Analog output channel 0 |
| Pin 2 | VOUT1 — Analog output channel 1 |
| Pin 3 | VOUT2 — Analog output channel 2 |
| Pin 4 | VOUT3 — Analog output channel 3 |
| Pin 5 | VOUT4 — Analog output channel 4 |
| Pin 6 | VOUT5 — Analog output channel 5 |
| Pin 7 | VOUT6 — Analog output channel 6 |
| Pin 8 | VOUT7 — Analog output channel 7 |
| Pin 9 | VOUT8 — Analog output channel 8 |
| Pin 10 | VOUT9 — Analog output channel 9 |
| Pin 11 | VOUT10 — Analog output channel 10 |
| Pin 12 | VOUT11 — Analog output channel 11 |
| Pin 13 | VOUT12 — Analog output channel 12 |
| Pin 14 | VOUT13 — Analog output channel 13 |
| Pin 15 | VOUT14 — Analog output channel 14 |
| Pin 16 | VOUT15 — Analog output channel 15 |
| Pin 17 | VOUT16 — Analog output channel 16 |
| Pin 18 | VOUT17 — Analog output channel 17 |
| Pin 19 | VOUT18 — Analog output channel 18 |
| Pin 20 | VOUT19 — Analog output channel 19 |
| Pin 21 | VOUT20 — Analog output channel 20 |
| Pin 22 | VOUT21 — Analog output channel 21 |
| Pin 23 | VOUT22 — Analog output channel 22 |
| Pin 24 | VOUT23 — Analog output channel 23 |
| Pin 25 | VOUT24 — Analog output channel 24 |
| Pin 26 | VOUT25 — Analog output channel 25 |
| Pin 27 | VOUT26 — Analog output channel 26 |
| Pin 28 | VOUT27 — Analog output channel 27 |
| Pin 29 | VOUT28 — Analog output channel 28 |
| Pin 30 | VOUT29 — Analog output channel 29 |
| Pin 31 | VOUT30 — Analog output channel 30 |
| Pin 32 | VOUT31 — Analog output channel 31 |
| Pin 33 | VOUT32 — Analog output channel 32 |
| Pin 34 | VOUT33 — Analog output channel 33 |
| Pin 35 | VOUT34 — Analog output channel 34 |
| Pin 36 | VOUT35 — Analog output channel 35 |
| Pin 37 | VOUT36 — Analog output channel 36 |
| Pin 38 | VOUT37 — Analog output channel 37 |
| Pin 39 | VOUT38 — Analog output channel 38 |
| Pin 40 | VOUT39 — Analog output channel 39 |
| Pin 41 | AVDD — Analog supply voltage |
| Pin 42 | AVSS — Analog ground |
| Pin 43 | DVDD — Digital supply voltage |
| Pin 44 | DGND — Digital ground |
| Pin 45 | REFIN/REFOUT — Reference input/output |
| Pin 46 | MON_OUT — Channel monitor output |
| Pin 47 | SER/PAR — Serial/parallel interface select |
| Pin 48 | SPI/I2C — SPI or I2C select (Pin 97) |
| Pin 49 | CS — Chip select |
| Pin 50 | SCLK — Serial clock |
| Pin 51 | SDIN — Serial data input |
| Pin 52 | SDO — Serial data output |
| Pin 53 | LDAC — Load DAC |
| Pin 54 | CLR — Clear |
| Pin 55 | RESET — Reset |
| Pin 56 | A0-A9 — Address pins |
| Pin 57 | D0-D11 — Parallel data pins |
| Pin 58 | WR — Write strobe |
| Pin 59 | RD — Read strobe |
| Pin 60 | BUSY — Busy indicator |
Typical Applications
AD5381BSTZ-5KL2 is suitable for 6 applications: Industrial Process Control, Automatic Test Equipment (ATE), Medical Instrumentation, Telecommunications Infrastructure, Audio and Video Equipment, Automotive Electronics.
Industrial Process Control
The AD5381BSTZ-5KL2 provides 40 independent 12-bit analog outputs for precise control of valves, actuators, and transducers in industrial automation. Its rail-to-rail output amplifiers and 5 V single-supply operation simplify interface to standard 0-5 V control loops. The integrated reference ensures stable operation over temperature, while the channel monitor allows real-time diagnostics without disturbing outputs. With a settling time of 8 µs, it supports fast update rates required in closed-loop control systems. The LQFP-100 package fits compact PLC modules, and the serial interface reduces wiring complexity in distributed control networks.
Recommended
Automatic Test Equipment (ATE)
In ATE systems, the AD5381BSTZ-5KL2 generates precise voltage levels for device-under-test (DUT) stimulus and calibration. Its 40 channels allow simultaneous driving of multiple test pins, reducing test time. The programmable reference (1.25 V/2.5 V) provides flexibility for different test voltage ranges. The channel monitor function enables verification of output levels without additional multiplexing hardware. The device's 12-bit resolution and 8 µs settling time meet the accuracy and speed requirements of production test. The parallel interface supports high-speed data transfer from the test controller, while the serial mode simplifies connection to SPI-based systems.
Recommended
Medical Instrumentation
The AD5381BSTZ-5KL2 is used in medical devices such as patient monitors and diagnostic equipment to generate analog control signals and calibration voltages. Its 40 channels can drive multiple transducers and display elements simultaneously. The low drift internal reference (10 ppm/°C) ensures stable output over the operating temperature range, critical for accurate patient measurements. The rail-to-rail outputs allow full-scale voltage swings from a 5 V supply, compatible with many medical sensor interfaces. The device's small LQFP-100 package is suitable for compact portable devices. The serial interface reduces pin count, simplifying PCB layout in space-constrained designs.
Recommended
Telecommunications Infrastructure
In telecom base stations and networking equipment, the AD5381BSTZ-5KL2 provides bias voltages and control signals for RF components, attenuators, and filters. Its 40 channels allow independent adjustment of multiple parameters, such as gain and phase, in beamforming and calibration circuits. The device's low noise and high linearity ensure minimal signal degradation. The programmable reference enables precise voltage scaling for different RF components. The serial interface (SPI/DSP) is ideal for connection to DSPs and FPGAs commonly used in telecom systems. The wide temperature range (-40°C to +105°C) supports outdoor installations.
Recommended
Audio and Video Equipment
The AD5381BSTZ-5KL2 can be used in professional audio mixers and video processing equipment to control analog gain stages, filters, and level adjustments. Its 40 channels provide ample control signals for multi-channel audio systems. The rail-to-rail outputs and low noise ensure high-fidelity signal paths. The device's fast settling time (8 µs) supports real-time adjustments in dynamic audio environments. The integrated reference reduces external component count, simplifying design. The parallel interface allows direct connection to DSPs for rapid updates. The LQFP-100 package is suitable for rack-mounted equipment.
Recommended
Automotive Electronics
In automotive systems, the AD5381BSTZ-5KL2 is used for calibration and control of sensors, actuators, and infotainment systems. Its 40 channels can drive multiple analog outputs for dashboard displays, climate control, and battery management. The device operates over -40°C to +105°C, suitable for under-hood and cabin environments. The rail-to-rail outputs interface directly with many automotive loads. The integrated reference ensures stable performance over temperature and supply variations. The serial interface reduces wiring harness complexity. The LQFP-100 package is robust for automotive PCB assembly.
Recommended
Recommended Products Summary
Engineering reference data for AD5381BSTZ-5KL2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD5381BSTZ-5 | AD5381BSTZ-3 | AD5380BSTZ-5 | AD5382BSTZ-5 | AD5383BSTZ-5 | AD5384BSTZ-5 |
|---|---|---|---|---|---|---|---|
| Package | 100-lead LQFP | 100-lead LQFP | 100-lead LQFP | 100-lead LQFP | 100-lead LQFP | 100-lead LQFP | 100-lead LQFP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bits | 12 bits | 12 bits | 14 bits | 14 bits | 12 bits | 14 bits |
| Number of Channels | 40 | 40 | 40 | 40 | 32 | 32 | 40 |
| Supply Voltage | 5 V | 5 V | 3 V | 5 V | 5 V | 5 V | 5 V |
| Settling Time | 8 µs | 8 µs | 8 µs | 10 µs | 10 µs | 8 µs | 10 µs |
| Internal Reference | 1.25 V/2.5 V, 10 ppm/°C | 1.25 V/2.5 V, 10 ppm/°C | 1.25 V/2.5 V, 10 ppm/°C | 1.25 V/2.5 V, 10 ppm/°C | 1.25 V/2.5 V, 10 ppm/°C | 1.25 V/2.5 V, 10 ppm/°C | 1.25 V/2.5 V, 10 ppm/°C |
| Interface | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE | Parallel, SPI, DSP, MICROWIRE |
Key Differentiators
- 40-channel density in a single LQFP-100 package (vs AD5382BSTZ-5 (32 channels))
- 12-bit resolution with 8 µs settling time (vs AD5380BSTZ-5 (14-bit, 10 µs))
- 5 V single-supply operation with rail-to-rail outputs (vs AD5381BSTZ-3 (3 V supply))
Design Notes
Decouple the AVDD and DVDD pins with 10 µF and 0.1 µF capacitors placed as close to the pins as possible. Use separate analog and digital ground planes to minimize noise coupling. The AD5381 operates from a single 5 V supply; ensure the supply is clean and stable to maintain DAC accuracy.
For the LQFP-100 package, use a solid ground plane under the device to aid thermal dissipation and reduce parasitic inductance. Route analog output traces away from digital lines to prevent crosstalk. Keep the reference input/output traces short and shielded if possible.
Ensure the SER/PAR pin is set correctly for the desired interface mode. In serial mode, tie the SPI/I2C pin (Pin 97) low to enable SPI. Do not leave the LDAC pin floating; tie it low for immediate updates or use it for synchronized updates. Verify the power-on reset state is zero-scale to avoid unexpected outputs.
Compliance Information
RoHS compliance indicated by 'Z' suffix in part number. Other compliance data not specified in provided sources.
