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Analog Devices Inc. AD4111BCPZ-RL7
- Part No.:
- AD4111BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD4111BCPZ-RL7.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 40LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:476
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Product details
Overview
AD4111BCPZ-RL7 from Analog Devices is a 24-bit sigma-delta ADC with integrated analog front end for ±10 V voltage and 0 mA to 20 mA current inputs, open wire detection, and on-chip 2.5 V reference. It delivers 16 noise-free bits at 1 kSPS, 85 dB 50/60 Hz rejection at 20 SPS, and ±0.06% accuracy at 25°C - enabling high-precision industrial process monitoring in PLC modules.
For engineers reviewing the AD4111BCPZ-RL7 datasheet, AD4111BCPZ-RL7 pinout, AD4111BCPZ-RL7 application, or AD4111BCPZ-RL7 equivalent, key selection criteria include its dual-input capability (voltage + current), single-supply operation (3.0–5.5 V AVDD), 40-lead LFCSP package, IEC61000-4-x immunity, and channel scan rate of 6.21 kSPS per channel with 161 µs settling.
Technical Context
The AD4111BCPZ-RL7 integrates a proprietary iPassives™ AFE supporting eight independent channel configurations, with simultaneous 50 Hz and 60 Hz rejection via selectable sinc5+sinc1 or sinc3 digital filters. Its internal 2.5 V reference exhibits ±0.12% initial accuracy and ±5 ppm/°C drift, buffered for low-noise operation.
It supports flexible digital interface modes (SPI/QSPI/MICROWIRE/DSP-compatible) with Schmitt-triggered SCLK, DOUT/RDY dual-function pin, and hardware synchronization (SYNC) for multi-device timing alignment. Open wire detection operates on voltage inputs using COMPA/COMPB compensation pins with external RC networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit no missing codes; delivers true 24-bit linearity (±0.01% FSR INL) for high-fidelity sensor digitization. |
| Input Ranges | ±10 V differential (≥1 MΩ impedance) and 0 mA to 20 mA (60 Ω sense impedance); supports mixed-signal field instrumentation. |
| Accuracy | ±0.06% TUE at 25°C for voltage inputs; ±0.08% TUE for current inputs - factory calibrated, eliminating system-level gain/offset trimming. |
| Rejection | 85 dB 50/60 Hz rejection at 20 SPS; enables stable measurements in electrically noisy industrial environments without external notch filtering. |
| Output Rate | 1.25 SPS to 31.25 kSPS; channel scan rate up to 6.21 kSPS (161 µs settling) - suitable for fast-loop control and slow-drift monitoring. |
| Reference | On-chip 2.5 V band gap reference with ±0.12% accuracy and ±5 ppm/°C drift - reduces BOM count and improves thermal stability vs. external references. |
| Power | Total IDD = 3.9 mA at full operation; 120 µA standby current - enables low-power remote sensing nodes and battery-backed systems. |
| Temperature Range | −40°C to +105°C operating range - qualified for harsh industrial enclosures and DIN-rail mounted automation equipment. |
Pinout & Package
The AD4111BCPZ-RL7 is housed in a 40-lead, 6 mm × 6 mm LFCSP package with exposed thermal pad soldered to AVSS. Pin functions are validated per Analog Devices' Rev. B datasheet (Page 11, Figure 4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN0–VIN7 | Voltage input channels | Support 4 differential or 8 single-ended ±10 V inputs; referenced to VINCOM; enable open wire detection when paired with COMPA/COMPB. |
| IIN0+–IIN3+ | Current input high-side terminals | Accept 0–24 mA input range; require external biasing of IINx− to support −0.5 mA to +24 mA full-scale operation. |
| REF+ / REF− | External reference inputs | Accept 1–2.5 V differential reference; buffers enabled for ±100 nA input current - compatible with precision external references. |
| DOUT/RDY | Dual-function serial output / data-ready flag | Drives SPI data on falling SCLK edge; asserts low to signal conversion completion - eliminates polling overhead in microcontroller interfaces. |
| SYNC | Multi-device synchronization input | Aligns digital filter and modulator timing across multiple AD4111BCPZ-RL7 units - essential for phase-coherent sampling in distributed I/O systems. |
| COMPA / COMPB | Open wire detection compensation | Connect via 1 kΩ + 680 pF network to voltage input pairs - enables system-level broken-wire diagnostics without additional ICs. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated AFE with iPassives™ | Eliminates external precision resistors and op-amps for ±10 V and 0–20 mA inputs - reduces layout sensitivity and long-term drift. |
| Simultaneous 50/60 Hz rejection | Configurable digital filter achieves >85 dB rejection at both line frequencies in a single measurement - critical for global deployment in AC-powered plants. |
| Open wire detection | Diagnoses broken sensor wiring on voltage inputs using single 3.3 V/5 V supply - avoids false alarms and enables predictive maintenance in field devices. |
| IEC61000-4-x certified robustness | Tested to IEC61000-4-2 (ESD), -4-3 (RS), -4-4 (EFT), -4-5 (Surge), -4-6 (CS), and CISPR 11 - meets industrial EMC requirements without external protection circuits. |
| Flexible channel sequencing | Automatic sequencer cycles through up to 8 enabled channels with independent setup registers - simplifies firmware for multi-sensor data acquisition. |
| Single-supply operation | Operates from 3.0–5.5 V AVDD and 2–5.5 V IOVDD - enables direct connection to isolated DC-DC rails in galvanically separated I/O modules. |
Applications
| Process Control Loop Monitoring | PLC Analog Input Module |
|---|---|
Use Scenario: Continuous digitization of 4–20 mA pressure transmitters and ±10 V thermocouple signal conditioners in chemical plant control rooms. IC Role / Device Role / Timing Role: Primary ADC with integrated AFE, performing synchronized multi-channel sampling at 100–1000 SPS with open wire fault detection. Use Value: Eliminates external signal conditioning and reference components while maintaining <±0.1% total error across −40°C to +70°C ambient - reducing module size and calibration labor. | Use Scenario: High-density analog input card for modular PLCs accepting mixed voltage/current field signals from valves, flow meters, and level sensors. IC Role / Device Role / Timing Role: Channel-configurable ADC managing up to 8 inputs with per-channel gain/offset/filter settings and hardware SYNC for deterministic scan timing. Use Value: Enables 16-bit effective resolution at 1 kSPS per channel with 85 dB power-line rejection - meeting SIL-2 functional safety signal integrity requirements without FPGA-based post-processing. |
| Industrial Data Logger | Condition Monitoring Sensor Hub |
Use Scenario: Battery-powered remote logger capturing temperature, strain, and vibration signals from legacy 4–20 mA and ±10 V sensors in wind turbine nacelles. IC Role / Device Role / Timing Role: Low-power ADC with 120 µA standby mode and programmable ODR - triggered by wake-up events or scheduled intervals. Use Value: Achieves 16 noise-free bits at 1 kSPS while consuming only 3.9 mA active current - extending 10-year battery life in unattended deployments. | Use Scenario: Edge node aggregating signals from accelerometers, current clamps, and RTDs in predictive maintenance gateways for manufacturing lines. IC Role / Device Role / Timing Role: Precision ADC with on-chip temperature sensor and GPO0/GPO1 for local alarm signaling and sensor excitation control. Use Value: Delivers ±2°C temperature sensor accuracy after user calibration - enabling thermal derating of motor drive signals without adding discrete temperature ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7177-2BRUZ | 32-bit resolution, higher power (7.5 mA), no integrated current input or open wire detection; requires external PGA and reference. | Better suited for laboratory-grade metrology than industrial field I/O where mixed signal types and diagnostics are required. | Select AD7177-2BRUZ only when ultimate resolution (>20 ENOB) and lower noise floor (<100 nV rms) outweigh integration and diagnostic needs. |
| LTC2499CGN#PBF | 24-bit, 0.1 µV offset, but lacks ±10 V input range, current input capability, open wire detection, and IEC61000-4-x certification. | Targeted at low-noise DC measurement (e.g., weigh scales), not ruggedized industrial analog input modules. | Choose LTC2499CGN#PBF for ultra-low-drift DC applications with clean lab environments - not for factory-floor voltage/current multiplexing. |
Compared with AD7177-2BRUZ and LTC2499CGN#PBF, the AD4111BCPZ-RL7 uniquely combines voltage/current dual-input support, open wire diagnostics, and industrial EMC hardening in a single chip - reducing system-level validation effort and component count for PLC and DCS designs.
Availability
AD4111BCPZ-RL7 is available at Aetrix Electronics and suitable for process control, PLC analog input modules, and industrial data loggers requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for AD4111BCPZ-RL7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD4111BCPZ-RL7 belongs to Analog Devices' precision sigma-delta ADC product line, engineered specifically for industrial process automation, where robustness, mixed-signal integration, and diagnostic capability are mandatory.
FAQ
What is the maximum channel scan rate supported by the AD4111BCPZ-RL7?
The AD4111BCPZ-RL7 achieves a maximum channel scan rate of 6.21 kSPS per channel with fully settled data (161 µs settling time). This is realized using the automatic channel sequencer and optimized digital filter configuration, allowing rapid acquisition across all eight voltage inputs or four current inputs without inter-channel crosstalk or settling errors.
Does the AD4111BCPZ-RL7 require external components for open wire detection?
Yes - open wire detection on voltage inputs requires external 1 kΩ resistors and 680 pF capacitors connecting each voltage input pair (e.g., VIN0/VIN1) to COMPA or COMPB. The AD4111BCPZ-RL7 provides the internal circuitry and bias generation, but the RC network must be placed externally per the datasheet's Figure 27 and Table 17 guidance.
Can the AD4111BCPZ-RL7 operate with only a 3.3 V supply?
Yes - the AD4111BCPZ-RL7 supports AVDD from 3.0 V to 5.5 V and IOVDD from 2 V to 5.5 V, making it fully compatible with 3.3 V systems. At 3.3 V AVDD, the absolute input voltage range is −12 V to +12 V, and the internal reference remains stable at 2.5 V with ±0.12% accuracy and ±5 ppm/°C drift.
How does the AD4111BCPZ-RL7 handle 50 Hz and 60 Hz interference simultaneously?
The AD4111BCPZ-RL7 uses a configurable sinc5+sinc1 digital filter that provides simultaneous 85 dB rejection at both 50 Hz and 60 Hz when operated at 27.27 SPS output data rate. This is achieved through notch placement in the filter transfer function - no external hardware or firmware averaging is required to suppress dual-frequency line noise.
Is the AD4111BCPZ-RL7 pin-compatible with other members of the AD411x family?
No - the AD4111BCPZ-RL7 is not pin-compatible with AD4112 or AD4110 variants. While sharing the same 40-lead LFCSP package footprint, pin assignments differ significantly (e.g., AD4112 includes dedicated HART modem pins; AD4110 lacks COMPA/COMPB). Board redesign is required when substituting between AD411x family members.
AD4111BCPZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 6.2k
- Number of Inputs:
- 4, 8
- Input Type:
- Differential, Single Ended
- Data Interface:
- Serial, SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2V ~ 5.5V
- Voltage - Supply, Digital:
- 2V ~ 5.5V
- Features:
- Internal Oscillator, Temperature Sensor
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- 40-LFCSP-VQ (6x6)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD4111BCPZ-RL7 FAQ
1.How can I place an order for AD4111BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD4111BCPZ-RL7 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 AD4111BCPZ-RL7 reliable?
The price and inventory of AD4111BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD4111BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD4111BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD4111BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD4111BCPZ-RL7?
AD4111BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD4111BCPZ-RL7 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 AD4111BCPZ-RL7?
For technical support, including AD4111BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD4111BCPZ-RL7 requirements.
6.How does Aetrix verify that AD4111BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD4111BCPZ-RL7 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 AD4111BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD4111BCPZ-RL7?
All AD4111BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD4111BCPZ-RL7, 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 AD4111BCPZ-RL7 part is unused and in its original packaging.
Return procedure for AD4111BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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