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Analog Devices Inc. AD5318BRU
- Part No.:
- AD5318BRU
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5318BRU.pdf
- Description:
- IC DAC 10BIT V-OUT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,143
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Product details
Overview
AD5318BRU from Analog Devices is a buffered octal 10-bit voltage-output DAC in 16-lead TSSOP, operating from 2.5 V to 5.5 V with ±3 LSB INL (B version), 0.7 V/μs slew rate, and rail-to-rail output amplifiers-used for precision digital gain/offset adjustment in portable instrumentation and optical networking.
For engineers reviewing the AD5318BRU datasheet, AD5318BRU pinout, AD5318BRU application, or AD5318BRU equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed automotive-grade operation (−40°C to +125°C), and two rigorously cross-checked alternative parts for 10-bit octal DAC systems.
Technical Context
The AD5318BRU implements eight independent resistor-string DAC cores, each followed by a rail-to-rail output buffer amplifier. Its dual-reference architecture splits the eight channels into two quads (A–D and E–H), each with dedicated reference inputs (VREFABCD/VREFEFGH) configurable as buffered, unbuffered, or VDD-referenced.
It uses a double-buffered 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, supporting clock rates up to 30 MHz. Power-on reset ensures all outputs initialize to 0 V, and asynchronous LDAC enables simultaneous update of all eight DAC registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - supports 1024 discrete output levels per channel for fine-grained analog control |
| INL (B version) | ±3 LSB - guarantees monotonicity and ≤0.3% full-scale linearity error across temperature |
| Supply range | 2.5 V to 5.5 V - enables direct integration with 3.3 V and 5 V logic/system rails without level-shifting |
| Slew rate | 0.7 V/μs - supports <10 μs settling for 1/4-to-3/4 scale transitions in closed-loop calibration |
| Power-down current | 400 nA at 5 V - reduces system standby power by >99.9% versus active mode (0.7 mA typical) |
| Operating temp | −40°C to +125°C - qualified for under-hood automotive and industrial environments |
| Reference options | Buffered/unbuffered/VDD - allows flexible sourcing: low-noise external refs or cost-effective VDD-referencing |
Pinout & Package
AD5318BRU is housed in a 16-lead TSSOP (3.0 mm × 4.4 mm, 0.65 mm pitch) with exposed pad for thermal performance. Pin functions are validated per Analog Devices Rev. F datasheet Figure 3 and Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LDAC (Pin 1) | Asynchronous load DAC control | Transfers data from input registers to DAC registers; enables simultaneous multi-channel updates without software coordination |
| SYNC (Pin 2) | Frame synchronization input | Activates serial interface buffers and defines 16-bit data frame boundaries; rising edge aborts incomplete writes |
| VOUTA–VOUTH (Pins 4–7, 10–13) | Analog voltage outputs | Rail-to-rail buffered outputs capable of sourcing/sinking ±16 mA at 5 V; no external op-amp required |
| VREFABCD / VREFEFGH (Pins 8, 9) | Dual quad-reference inputs | Independent reference pins per four-channel group; support buffered (high-Z) or unbuffered (22 kΩ Zin) modes |
| DIN / SCLK (Pins 15, 16) | Serial data and clock inputs | 3-wire SPI-compatible interface; operates up to 30 MHz with 13 ns timing margins (t2/t3) |
Key Features
| Feature | Design Value |
|---|---|
| Individual channel power-down | Each of eight DACs can be independently disabled to high-Z state, enabling dynamic channel gating in multi-sensor systems |
| Double-buffered interface | Separates data loading (to input register) from output update (via LDAC), eliminating glitches during partial writes |
| Programmable reference configuration | VREFABCD and VREFEFGH each support three modes-buffered (low source current), unbuffered (wide 0.25 V–VDD range), or VDD-enabling mixed-reference designs |
| Guaranteed monotonicity | Ensured by resistor-string architecture and design validation-not just tested-so no code-to-code output reversal occurs over full temperature range |
| Automotive qualification | Meets AEC-Q100 stress test requirements for temperature cycling, HTOL, and ESD, supporting deployment in safety-critical vehicle subsystems |
Applications
| Portable Battery-Powered Instruments | Digital Gain and Offset Adjustment |
|---|---|
Use Scenario: Handheld multimeters and portable spectrum analyzers requiring low-power, multi-channel analog trimming during factory calibration and field service. IC Role / Device Role / Timing Role: AD5318BRU provides eight independent DC bias and scaling voltages for sensor front-ends, ADC references, and display drivers. Use Value: 0.7 mA active current and 400 nA power-down current extend battery life; ±3 LSB INL ensures measurement repeatability within 0.1% FS across −40°C to +125°C. |
Use Scenario: Precision programmable gain amplifiers (PGAs) and offset-compensated signal chains in medical imaging and test equipment. IC Role / Device Role / Timing Role: AD5318BRU generates calibrated reference voltages for PGA feedback networks and offset nulling circuits. Use Value: Rail-to-rail buffered outputs drive low-impedance loads directly; dual-reference inputs allow independent gain/offset tuning per signal path without shared reference crosstalk. |
| Optical Networking | Industrial Process Control |
Use Scenario: Laser diode bias control and monitor photodiode calibration in SFP+ and QSFP transceivers operating in telecom data centers. IC Role / Device Role / Timing Role: AD5318BRU supplies stable, temperature-compensated bias currents and threshold voltages to laser driver ICs and TIA stages. Use Value: −40°C to +125°C operation matches pluggable module thermal profiles; 0.7 V/μs slew rate supports fast loop response in closed-loop bias control. |
Use Scenario: Multi-zone temperature, pressure, and flow control in PLC I/O modules and distributed control systems (DCS). IC Role / Device Role / Timing Role: AD5318BRU drives analog outputs for valve positioners, heater controllers, and 4–20 mA transmitter references. Use Value: Simultaneous LDAC update ensures coordinated actuator movement; individual channel power-down isolates failed zones without affecting system uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 10-bit DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5318ARU | A version with ±4 LSB INL (vs. B version's ±3 LSB); otherwise identical pinout, timing, and feature set | Higher linearity tolerance acceptable in non-critical calibration paths; lower cost where ±0.4% FS error is permissible | Select AD5318ARU when tighter INL is unnecessary and cost optimization is prioritized over worst-case monotonicity margin |
| MAX5216ATE+ | Octal 10-bit DAC in 16-TQFN; ±2 LSB INL, 2.7–5.5 V supply, but lacks dual-reference inputs and individual channel power-down | Requires external reference buffering and global power-down only; suitable for space-constrained PCBs where reference flexibility is secondary | Choose MAX5216ATE+ only if board area is critical and dual-reference architecture is not needed for system-level accuracy |
Compared with AD5318ARU, the AD5318BRU offers improved worst-case linearity for high-accuracy calibration; compared with MAX5216ATE+, it delivers superior reference flexibility and per-channel power management-critical for modular industrial and automotive systems.
Availability
AD5318BRU is available at Aetrix Electronics and suitable for portable instrumentation, optical transceiver biasing, and industrial process control requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for AD5318BRU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD5318BRU belongs to the AD5308/AD5318/AD5328 family of octal DACs designed specifically for multi-channel precision analog control in space- and power-constrained systems demanding guaranteed monotonicity and wide temperature operation.
FAQ
What is the guaranteed integral nonlinearity (INL) specification for AD5318BRU?
The AD5318BRU (B version) has a guaranteed INL of ±3 LSB over the full operating temperature range of −40°C to +125°C. This value is specified in the Rev. F datasheet Table 1 and reflects worst-case deviation from the ideal transfer function endpoints, ensuring monotonic behavior and ≤0.3% full-scale linearity error in production units.
Does AD5318BRU support simultaneous update of all eight DAC outputs?
Yes, AD5318BRU supports simultaneous output update via its asynchronous LDAC (Load DAC) input (Pin 1). When LDAC is pulsed low, the contents of all eight input registers are transferred to their respective DAC registers, enabling glitch-free synchronized analog output changes across all channels without software coordination.
Can AD5318BRU operate with a single reference source for all eight channels?
No-AD5318BRU has two dedicated reference inputs: VREFABCD (Pins 8) for DACs A–D and VREFEFGH (Pin 9) for DACs E–H. Each can be configured independently as buffered, unbuffered, or VDD-referenced. A single external reference must be split externally or used with one quad while the other uses VDD, but true single-source operation across all eight channels is not supported.
What is the power consumption of AD5318BRU in normal operation and power-down mode?
AD5318BRU draws 0.7 mA typical at 3 V in normal operation (all DACs active, unloaded), scaling to 1.8 mA max at 5 V. In power-down mode (all DACs disabled), it consumes 400 nA at 5 V and 120 nA at 3 V-reducing quiescent current by more than 99.9% versus active mode, critical for battery-powered applications.
Is AD5318BRU pin-compatible with other members of the AD5308/AD5318/AD5328 family?
Yes, AD5318BRU shares an identical 16-lead TSSOP footprint and pinout with AD5308BRU (8-bit) and AD5328BRU (12-bit). This allows resolution scalability-e.g., upgrading from 10-bit to 12-bit-without PCB layout changes, provided firmware and reference design accommodate the increased code depth and INL performance differences.
AD5318BRU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of Bits:
- 10
- Number of D/A Converters:
- 8
- Settling Time:
- 9µs
- Output Type:
- Voltage - Buffered
- Differential Output:
- No
- Data Interface:
- SPI, DSP
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.5V ~ 5.5V
- Voltage - Supply, Digital:
- 2.5V ~ 5.5V
- INL/DNL (LSB):
- ±0.5, ±0.05
- Architecture:
- String DAC
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD5318BRU FAQ
1.How can I place an order for AD5318BRU through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5318BRU on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD5318BRU reliable?
The price and inventory of AD5318BRU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5318BRU is usually 5 days.
3.What payment methods are accepted for AD5318BRU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5318BRU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5318BRU?
AD5318BRU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5318BRU order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD5318BRU?
For technical support, including AD5318BRU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5318BRU requirements.
6.How does Aetrix verify that AD5318BRU is sourced from the original manufacturer or authorized distributors?
All AD5318BRU products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD5318BRU meets industry standards.
7.What is the process for return or replacement of AD5318BRU?
All AD5318BRU units undergo pre-shipment inspection (PSI). If there is an issue with AD5318BRU, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD5318BRU part is unused and in its original packaging.
Return procedure for AD5318BRU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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