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Analog Devices Inc. AD5751BCPZ
- Part No.:
- AD5751BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 32-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD5751BCPZ.pdf
- Description:
- IC INST AMP 1 CIRCUIT 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:242
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Product details
Overview
AD5751BCPZ from Analog Devices is a single-channel, precision industrial voltage/current output driver with hardware- or software-programmable ranges. It delivers 0 mA to 20 mA, 4 mA to 20 mA, or 0 mA to 24 mA current outputs and 0 V to 5 V, 0 V to 10 V, or 0 V to 40 V voltage outputs, with ±0.03% FSR typical total unadjusted error and −40°C to +105°C operation-used in PLC analog output modules for actuator control.
For engineers reviewing the AD5751BCPZ datasheet, AD5751BCPZ pinout, AD5751BCPZ application, or AD5751BCPZ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply-chain support for industrial process control deployments.
Technical Context
The AD5751BCPZ integrates dual-output architecture: a current output stage (IOUT) with programmable RSET selection (internal or external 15 kΩ resistor) and a buffered voltage output (VOUT) with COMP1/COMP2 compensation pins for capacitive load stability up to 1 μF. Its SPI/MICROWIRE-compatible 3-wire interface supports PEC CRC-8 error checking and asynchronous CLEAR for fail-safe zero-scale reset.
Hardware/software mode selection is controlled by the HW SELECT pin, determining whether range configuration occurs via digital registers (software mode) or parallel address pins (R0–R3, AD0–AD2). Output fault detection includes open-circuit (IOUT), short-circuit (VOUT), and overtemperature alerts routed to dedicated open-drain pins (FAULT/TEMP, IFAULT, VFAULT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Ranges | 0–20 mA, 4–20 mA, or 0–24 mA - enables HART-compatible loop-powered transmitters and legacy 4–20 mA field device interfaces. |
| Voltage Ranges | 0–5 V, 0–10 V, or 0–40 V - supports standard industrial sensor excitation, valve positioner control, and high-headroom actuator drivers. |
| Total Unadjusted Error | ±0.03% FSR typical (current), ±0.02% FSR typical (voltage) - ensures <±1 LSB error at 16-bit-equivalent resolution without calibration. |
| Output Drift | ±5 ppm/°C (current), ±3 ppm/°C (voltage) - maintains accuracy across full −40°C to +105°C industrial temperature range. |
| Supply Range | AVDD = 10.8 V to 55 V - powers directly from 24 V DC industrial rails with 2.75 V headroom margin for loop compliance. |
| Package | 32-lead 5 mm × 5 mm LFCSP - surface-mount footprint with exposed paddle for thermal dissipation in dense PLC backplanes. |
| Digital Interface | SPI/MICROWIRE, 3-wire mode, 50 MHz max SCLK - minimizes isolation component count in galvanically isolated I/O modules. |
Pinout & Package
AD5751BCPZ uses a 32-lead, 5 mm × 5 mm LFCSP package with exposed paddle tied to GND. Pin functions are mode-dependent (hardware vs. software), with shared pins multiplexed for addressing, range selection, or fault signaling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDO/VFAULT) | Serial Data Out / Voltage Short-Circuit Alert | In software mode: reads back register data; in hardware mode: asserts low on VOUT short - enables diagnostics without MCU polling. |
| 3 (CLEAR) | Asynchronous Clear Input | Active-high signal forcing output to zero-scale/midscale - critical for safe shutdown during system faults or power-up sequencing. |
| 6 (SYNC/RSET) | Latch Enable / External RSET Select | In software mode: clocks data into DAC register; in hardware mode: selects internal (RSET=1) or external (RSET=0) current sense resistor. |
| 18 (IOUT) | Current Output Terminal | High-side current source driving 4–20 mA loops - supports open-circuit detection and complies to AVDD − 2.75 V under load. |
| 23 (VOUT) | Voltage Output Terminal | Buffered rail-to-rail capable output - drives 5 kΩ loads for 0–40 V range; requires COMP1/COMP2 caps for >100 nF capacitive loads. |
| 29 (HW SELECT) | Mode Configuration Input | Hardwired logic level (0 = software, 1 = hardware) setting boot-time behavior - eliminates firmware dependency for fixed-range applications. |
| 31 (FAULT/TEMP) | Fault Alert / Overtemperature Output | Open-drain output asserted low on open-circuit, short-circuit, overtemp, or PEC error - simplifies centralized fault monitoring in multi-channel systems. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Overrange | 2% overrange on all current/voltage ranges - allows temporary exceedance of nominal span for valve stroking or diagnostic test signals. |
| On-Chip Fault Detection | Dedicated open-drain FAULT/TEMP, VFAULT, and IFAULT pins - reduces external supervision circuitry and enables immediate loop interruption on failure. |
| PEC Error Checking | CRC-8 packet error checking on SPI writes - prevents corrupted range or configuration commands in electrically noisy factory environments. |
| Flexible Power-On State | HW SELECT and CLEAR pin states determine initial output (0 V, tristate, or low-end current) - eliminates undefined output transients at startup. |
| Inductive/Capacitive Load Drive | Stable with 0.1 H inductive and 1 μF capacitive loads - supports direct connection to solenoid valves and long cable runs without external buffering. |
Applications
| PLC Analog Output Module | Smart Transmitter Calibration |
|---|---|
Use Scenario: Mounted on a modular I/O card in a rack-mounted PLC, delivering calibrated 4–20 mA signals to field instruments like pressure transmitters and flow meters. IC Role / Device Role / Timing Role: Precision current driver converting digital setpoints from the controller CPU into loop-powered analog outputs with fault reporting. Use Value: ±0.03% FSR TUE and ±5 ppm/°C drift ensure measurement traceability across ambient temperature swings without recalibration. | Use Scenario: Embedded in handheld calibrators used to verify and adjust 4–20 mA smart transmitters in field service. IC Role / Device Role / Timing Role: Programmable voltage/current source generating precise reference outputs for transmitter input testing and zero/span adjustment. Use Value: Hardware-mode configuration (via R0–R3 pins) enables fixed-range operation without host MCU, reducing BOM and firmware complexity. |
| Industrial Actuator Controller | HART-Compatible Loop Interface |
Use Scenario: Driving electro-hydraulic servo valves in motion control systems requiring fast, accurate 0–10 V or 0–20 mA command signals. IC Role / Device Role / Timing Role: High-speed voltage/current output stage with 7 μs settling (0–5 V) and 8.5 μs (4–20 mA step) - meets dynamic response requirements of closed-loop positioning. Use Value: 50 MHz SPI interface and asynchronous CLEAR allow real-time command updates and emergency stop assertion within microsecond timing budgets. | Use Scenario: Serving as the analog output core in HART-enabled devices where digital communication overlays the 4–20 mA loop. IC Role / Device Role / Timing Role: Current source providing the base 4–20 mA signal while tolerating HART AC coupling (±0.5 V superimposed) without distortion or latch-up. Use Value: Output short-circuit protection and open-circuit detection maintain loop integrity during HART burst transmission or wiring faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar industrial I/V output driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5422ACPZ-REEL7 | Integrated 16-bit DAC core + current/voltage output; higher integration but no hardware mode; larger 40-lead LFCSP package. | Requires full digital control stack; not suitable for fixed-range, pin-strapped designs needing minimal MCU interaction. | Select AD5422 when system-level resolution and integrated DAC linearity outweigh need for hardware configurability and smaller footprint. |
| XTR300IPWPR | 4–20 mA only (no voltage output); built-in HART modem; 24-pin TSSOP; lower accuracy (±0.1% FSR TUE). | Optimized for HART-only loop-powered transmitters; lacks voltage output flexibility and wide supply range (up to 40 V only). | Select XTR300 for cost-sensitive, HART-centric field devices where voltage output and extended AVDD (to 55 V) are unnecessary. |
Compared with AD5751BCPZ, AD5422 offers higher integration but sacrifices hardware-mode simplicity and compact size, while XTR300 trades voltage output capability and precision for HART-native functionality and lower cost in dedicated current-loop applications.
Availability
AD5751BCPZ is available at Aetrix Electronics and suitable for PLC analog output modules, industrial actuator controllers, smart transmitter calibration tools, and HART-compatible loop interfaces requiring stable component supply across extended temperature and voltage ranges.
Supply support for AD5751BCPZ 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 AD5751 belongs to Analog Devices' precision industrial DAC and output driver product line, designed specifically for robust, calibration-free analog output in programmable logic controllers, distributed control systems, and field instrumentation.
FAQ
What output ranges does the AD5751BCPZ support?
The AD5751BCPZ supports three current output ranges: 0 mA to 20 mA, 0 mA to 24 mA, and 4 mA to 20 mA. It also supports three voltage output ranges: 0 V to 5 V, 0 V to 10 V, and 0 V to 40 V. All ranges include programmable overrange capability (e.g., 0–6 V, 0–12 V, 0–44 V, or 0–24.5 mA). These ranges are selected either via software registers (SPI) or hardware pins (R0–R3), depending on the HW SELECT configuration. The AD5751BCPZ maintains specified accuracy across all ranges without recalibration.
How does the AD5751BCPZ handle fault conditions?
The AD5751BCPZ features integrated fault detection for open-circuit (IOUT), short-circuit (VOUT), and overtemperature events. In software mode, the FAULT/TEMP pin asserts low on any of these faults or on PEC interface errors. In hardware mode, separate pins - VFAULT (short-circuit), IFAULT (open-circuit), and TEMP (overtemperature) - provide discrete alerts. All fault outputs are open-drain and require pull-up resistors. This enables rapid system-level response without continuous register polling, and the AD5751BCPZ continues safe operation (e.g., tri-stating outputs) upon fault detection.
Can the AD5751BCPZ operate with a 24 V supply and drive a 4–20 mA loop?
Yes, the AD5751BCPZ operates with AVDD from 10.8 V to 55 V, making 24 V DC fully compatible. Its current output stage supports 4–20 mA range with loop compliance up to AVDD − 2.75 V (i.e., up to 21.25 V at 24 V AVDD), sufficient for typical 250 Ω–600 Ω loop loads. The AD5751BCPZ also includes open-circuit detection and internal/external RSET selection to optimize temperature drift - critical for maintaining 4–20 mA accuracy across industrial temperature ranges without external calibration.
What is the purpose of the HW SELECT pin on the AD5751BCPZ?
The HW SELECT pin configures the AD5751BCPZ boot mode: logic low selects software mode (SPI register control of ranges, fault behavior, and output state), while logic high selects hardware mode (parallel pin decoding via R0–R3 and AD0–AD2 for fixed-range operation). This eliminates MCU dependency for static configurations and simplifies design in space-constrained or cost-sensitive applications. The AD5751BCPZ retains full functionality in both modes, including fault reporting and CLEAR functionality, but the pin mapping and initialization behavior differ per mode - detailed in the AD5751BCPZ datasheet Pin Function Descriptions table.
Does the AD5751BCPZ require external compensation components?
Yes - for driving capacitive loads >100 pF, the AD5751BCPZ requires external compensation capacitors between COMP1 and COMP2 pins to ensure stability and minimize overshoot. The datasheet specifies capacitor values based on load capacitance (e.g., 100 pF for 1 nF load). Without proper compensation, the VOUT buffer may oscillate or exhibit excessive ringing, especially in 0–40 V range operation. The AD5751BCPZ's COMP1/COMP2 interface is unique to its architecture and must be implemented per layout guidelines in the datasheet; omitting it compromises output fidelity and may violate EMC requirements in industrial settings.
AD5751BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- 5.2mA
- Current - Output / Channel:
- 24 mA
- Voltage - Supply Span (Min):
- 10.8 V
- Voltage - Supply Span (Max):
- 55 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LFCSP-VQ (5x5)
AD5751BCPZ FAQ
1.How can I place an order for AD5751BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5751BCPZ 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 AD5751BCPZ reliable?
The price and inventory of AD5751BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5751BCPZ is usually 5 days.
3.What payment methods are accepted for AD5751BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5751BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5751BCPZ?
AD5751BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5751BCPZ 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 AD5751BCPZ?
For technical support, including AD5751BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5751BCPZ requirements.
6.How does Aetrix verify that AD5751BCPZ is sourced from the original manufacturer or authorized distributors?
All AD5751BCPZ 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 AD5751BCPZ meets industry standards.
7.What is the process for return or replacement of AD5751BCPZ?
All AD5751BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD5751BCPZ, 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 AD5751BCPZ part is unused and in its original packaging.
Return procedure for AD5751BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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