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Analog Devices Inc. AD7380-4BCPZ-RL7
- Part No.:
- AD7380-4BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-UFQFN Exposed Pad, CSP
- Datasheet:
-
AD7380-4BCPZ-RL7.pdf
- Description:
- 4MSPS 16-BIT QUAD DIFFERENTIAL S
- Quantity:
- Payment:
- Shipping:
Inventory:2,887
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Product details
Overview
AD7380-4BCPZ-RL7 from Analog Devices is a quad-channel, 16-bit, simultaneous-sampling SAR ADC with fully differential analog inputs, 4 MSPS throughput, 92 dB SNR (VREF = 3.3 V), and on-chip oversampling supporting up to 2-bit resolution boost. It operates from a 3.3 V supply across −40°C to +125°C and targets high-precision motor control current/position feedback systems.
For engineers reviewing the AD7380-4BCPZ-RL7 datasheet, AD7380-4BCPZ-RL7 pinout, AD7380-4BCPZ-RL7 application, or AD7380-4BCPZ-RL7 equivalent, key selection considerations include simultaneous sampling integrity, differential input common-mode range (0.2 V to VREF − 0.2 V), oversampling-enabled dynamic range extension (97.7 dB at OSR = 8×), and 4 mm × 4 mm LFCSP package compatibility with space-constrained industrial DAQ designs.
Technical Context
The AD7380-4BCPZ-RL7 integrates four independent SAR ADCs sharing a single external reference (2.5 V–3.3 V) and synchronized by CS falling edge, enabling true simultaneous acquisition across all four channels. Its analog front-end features matched 15 pF sampling capacitors and supports differential input ranges of ±VREF with 76 dB CMRR at 500 kHz.
Digital interface flexibility includes 4-wire serial output (SDOA/SDOB/SDOC/SDOD) for parallel readout or 1-wire mode for reduced pin count, with logic-level compatibility across 1.65 V–3.6 V VLOGIC. Oversampling modes-normal averaging and rolling average-allow configurable trade-offs between effective resolution (up to 18-bit), noise floor, and SCLK speed reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit native; up to 18-bit effective with oversampling (OSR = 8×, RES = 1) |
| Throughput Rate | 4 MSPS per channel, simultaneous sampling enabled by single CS signal |
| SNR | 92 dB typical at 3.3 V reference, 97.7 dB with OSR = 8× - enables high-fidelity signal capture in noisy motor control environments |
| INL Error | ±3 LSB max - ensures monotonicity and precision in closed-loop position feedback |
| Input Bandwidth | 26.8 MHz (−3 dB) - supports wideband current sensing up to ~10 MHz fundamental |
| Channel Isolation | −126 dB - prevents crosstalk between phase currents in 3-phase motor control |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial drive applications |
Pinout & Package
AD7380-4BCPZ-RL7 uses a 4 mm × 4 mm, 24-lead LFCSP package with exposed pad (EPAD) requiring connection to GND for thermal and electrical performance. Pin 15 (DNC) must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 5, 14, 16) | Ground reference | Four dedicated ground pins minimize ground bounce across analog/digital domains |
| VLOGIC (Pin 2) | Logic interface supply | Independent 1.65 V–3.6 V rail isolates digital I/O noise from analog section |
| REGCAP (Pin 3) | Internal regulator decoupling | 1.9 V internal supply node; requires 1 µF capacitor to GND for stable core operation |
| VCC (Pin 4) | Analog power supply | 3.0 V–3.6 V analog rail; decoupling critical for SNR performance |
| AINA± to AIND± (Pins 6–13) | Differential analog inputs (4 channels) | Matched pairs with 18 pF track-mode capacitance; support common-mode range of 0.2 V to VREF − 0.2 V |
| REFIN (Pin 17) | External reference input | Accepts 2.5 V–3.3 V reference; 1 µF decoupling mandatory for low-noise conversion |
| CS (Pin 18) | Chip select / conversion trigger | Falling edge initiates simultaneous sampling across all four channels |
| SDOA–SDOD/ALERT (Pins 19–24) | Serial data outputs / alert indicator | Four independent SDO pins enable concurrent readout; SDOD doubles as threshold-exceeded ALERT output |
Key Features
| Feature | Design Value |
|---|---|
| Quad simultaneous sampling | Single CS signal triggers synchronized acquisition across all four differential channels - eliminates phase skew in multi-axis motor control |
| Oversampling block with resolution boost | Configurable OSR up to 8× delivers 2-bit effective resolution increase (16 → 18-bit) and 5.7 dB SNR improvement without external hardware |
| Differential analog inputs with wide common-mode range | Supports 0.2 V to VREF − 0.2 V common-mode voltage - accommodates amplifier outputs biased near rails in compact driver circuits |
| Out-of-range alert (ALERT) | Dedicated interrupt pin (SDOD/ALERT) signals real-time overvoltage/undervoltage events - enables fast fault response in safety-critical drives |
| Low-latency serial interface | Conversion time of 190 ns and SDO setup/hold times ≤5 ns allow tight timing margins in high-speed DSP/FPGA interfacing |
Applications
| Motor Control Position Feedback | Motor Control Current Sense |
|---|---|
|
Use Scenario: High-bandwidth rotor position sensing using resolver or encoder feedback in servo drives. IC Role / Device Role / Timing Role: Simultaneous sampling of quadrature sine/cosine or Hall sensor outputs to compute precise angular position with minimal latency. Use Value: 4 MSPS throughput and <145 ps aperture delay match ensure sub-degree angular error in fast-accelerating motors. |
Use Scenario: Real-time three-phase current measurement in inverter legs for field-oriented control (FOC). IC Role / Device Role / Timing Role: Quad differential input captures IA, IB, IC, and ID (DC link) simultaneously to reconstruct instantaneous current vectors. Use Value: −126 dB channel isolation prevents cross-phase coupling errors during PWM switching transients. |
| Data Acquisition Systems | Erbium-Doped Fiber Amplifier (EDFA) |
|
Use Scenario: Multi-channel vibration monitoring in predictive maintenance systems with anti-aliasing filtering. IC Role / Device Role / Timing Role: High-fidelity digitization of accelerometer and temperature sensor outputs with synchronized timestamping. Use Value: 92 dB SNR and 26.8 MHz input bandwidth preserve signal integrity for FFT-based spectral analysis up to 10 MHz. |
Use Scenario: Closed-loop gain control of optical amplifiers via photodiode current and pump laser voltage monitoring. IC Role / Device Role / Timing Role: Simultaneous sampling of multiple photodiode and thermistor signals to stabilize EDFA output power and wavelength. Use Value: 16-bit resolution and ±3 LSB INL enable <0.1% gain stability over temperature in telecom-grade amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7381-4BCPZ-RL7 | 14-bit resolution, same 4 MSPS throughput, identical pinout and oversampling architecture | Lower dynamic range (87 dB SNR) limits use in high-precision current sensing where 16-bit linearity is required | Select when cost sensitivity outweighs need for 16-bit INL/SNR and system SNR budget allows ≥3 dB margin |
| AD7389-4BCPZ-RL7 | 12-bit resolution, 4 MSPS, same package and interface; lacks oversampling block and resolution boost | No OSR capability; unsuitable for applications requiring >16-bit effective resolution or noise floor reduction | Choose only for legacy designs where 12-bit accuracy suffices and oversampling is not needed |
Compared with AD7380-4BCPZ-RL7, AD7381-4BCPZ-RL7 trades 2 bits of resolution for lower power (32 mW vs. 180 mW) and cost, while AD7389-4BCPZ-RL7 further reduces complexity and cost but forfeits both oversampling and 16-bit linearity - making AD7380-4BCPZ-RL7 the sole option for simultaneous, high-SNR, oversampled 16-bit acquisition.
Availability
AD7380-4BCPZ-RL7 is available at Aetrix Electronics and suitable for motor control position feedback, motor control current sense, and data acquisition systems requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.
Supply support for AD7380-4BCPZ-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, serving industrial, automotive, communications, and healthcare markets.
The AD7380-4BCPZ-RL7 belongs to Analog Devices' high-speed SAR ADC product line, engineered specifically for demanding real-time control applications requiring simultaneous multi-channel sampling, low latency, and high dynamic range in harsh thermal environments.
FAQ
What is the maximum external reference voltage supported by the AD7380-4BCPZ-RL7?
The AD7380-4BCPZ-RL7 accepts an external reference voltage from 2.49 V to 3.4 V, with optimal SNR performance achieved at 3.3 V. Operation at 3.3 V yields 92 dB typical SNR and enables full 16-bit resolution with LSB size of 100.7 µV. The REFIN pin requires a 1 µF decoupling capacitor to GND for stable reference delivery.
Does the AD7380-4BCPZ-RL7 support true simultaneous sampling across all four channels?
Yes, the AD7380-4BCPZ-RL7 performs true simultaneous sampling: a single falling edge on the CS pin initiates acquisition across all four differential input pairs (AINA± through AIND±) at the exact same instant. This eliminates inter-channel phase skew and ensures coherent multi-signal capture essential for vector control and phase-difference measurements.
How does the oversampling function improve performance in the AD7380-4BCPZ-RL7?
The AD7380-4BCPZ-RL7's on-chip oversampling block supports normal averaging and rolling average modes, delivering up to 2-bit resolution boost (16 → 18-bit effective) and increasing SNR from 92 dB to 97.7 dB at OSR = 8×. This reduces noise floor and relaxes anti-aliasing filter requirements without external hardware or firmware overhead.
What is the purpose of the REGCAP pin on the AD7380-4BCPZ-RL7?
The REGCAP pin on the AD7380-4BCPZ-RL7 provides access to the output of an internal 1.9 V regulator used exclusively for core ADC circuitry. It must be decoupled to GND with a 1 µF capacitor placed close to the pin to stabilize internal biasing and ensure consistent 16-bit linearity and SNR performance across temperature and supply variations.
Can the AD7380-4BCPZ-RL7 operate with a 1.8 V logic interface supply?
Yes, the AD7380-4BCPZ-RL7 supports VLOGIC from 1.65 V to 3.6 V, including 1.8 V operation. Digital inputs (CS, SCLK, SDI) and outputs (SDOA–SDOD/ALERT) are fully compatible with 1.8 V logic levels, enabling direct interfacing with low-voltage FPGAs and microcontrollers without level-shifting circuitry.
AD7380-4BCPZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-UFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 4M
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:4
- Number of A/D Converters:
- 4
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 3V ~ 3.6V
- Voltage - Supply, Digital:
- 3V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 24-LFCSP (4x4)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7380-4BCPZ-RL7 FAQ
1.How can I place an order for AD7380-4BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7380-4BCPZ-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 AD7380-4BCPZ-RL7 reliable?
The price and inventory of AD7380-4BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7380-4BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7380-4BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7380-4BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7380-4BCPZ-RL7?
AD7380-4BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7380-4BCPZ-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 AD7380-4BCPZ-RL7?
For technical support, including AD7380-4BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7380-4BCPZ-RL7 requirements.
6.How does Aetrix verify that AD7380-4BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7380-4BCPZ-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 AD7380-4BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7380-4BCPZ-RL7?
All AD7380-4BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7380-4BCPZ-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 AD7380-4BCPZ-RL7 part is unused and in its original packaging.
Return procedure for AD7380-4BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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