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Analog Devices Inc. AD7380-4BCPZ
- Part No.:
- AD7380-4BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-UFQFN Exposed Pad, CSP
- Datasheet:
-
AD7380-4BCPZ.pdf
- Description:
- 4MSPS 16-BIT QUAD DIFFERENTIAL S
- Quantity:
- Payment:
- Shipping:
Inventory:1,523
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Product details
Overview
AD7380-4BCPZ from Analog Devices is a quad, simultaneous-sampling, 16-bit SAR analog-to-digital converter with fully differential inputs, 4 MSPS throughput, 92 dB SNR (VREF = 3.3 V), and on-chip oversampling supporting up to 2-bit resolution boost - designed for high-precision motor control current and position feedback systems.
For engineers reviewing the AD7380-4BCPZ datasheet, AD7380-4BCPZ pinout, AD7380-4BCPZ application, or AD7380-4BCPZ equivalent, key selection criteria include simultaneous 4-channel 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 LFCSP-24 package compatibility with space-constrained industrial signal chains.
Technical Context
The AD7380-4BCPZ integrates four independent SAR ADC cores sharing a single external reference (2.5 V–3.3 V) and synchronized by CS falling edge; each channel features matched aperture delay (±145 ps) and 18 pF track-mode input capacitance to minimize driver burden. Its serial interface supports 1-wire, 2-wire, or 4-wire output modes with separate SDOA/SDOB/SDOC/SDOD pins for concurrent data readout.
Oversampling is implemented via configurable normal or rolling average modes, delivering up to 18-bit effective resolution (RES = 1, OSR = 8×) while reducing SCLK speed requirements; the ALERT pin provides real-time out-of-range detection with 220 ns latency from CS assertion, enabling closed-loop fault response in motor control loops.
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 across all four differential inputs |
| SNR | 92 dB typical at 1 kHz, 3.3 V reference; 97.7 dB with OSR = 8× |
| INL Error | ±3 LSB max over full temperature range (−40°C to +125°C) |
| Input Bandwidth | 26.8 MHz (−3 dB), enabling accurate digitization of fast transients in servo amplifiers |
| Common-Mode Range | 0.2 V to VREF − 0.2 V, supporting wide-range amplifier interfacing without level-shifting |
| Power Dissipation | 180.2 mW typical at 4 MSPS, VCC = 3.3 V, VLOGIC = 3.3 V |
Pinout & Package
AD7380-4BCPZ is housed in a 4 mm × 4 mm, 24-lead lead frame chip scale package (LFCSP) 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 reduce ground bounce and improve noise immunity across all four ADC channels |
| VLOGIC (Pin 2) | Digital interface supply | Independent 1.65 V–3.6 V logic rail enables mixed-voltage system interfacing (1.8 V/2.5 V/3.3 V compatible) |
| REGCAP (Pin 3) | Internal regulator decoupling | 1.9 V internal analog supply node; requires 1 µF capacitor to GND for stable core biasing |
| VCC (Pin 4) | Analog power supply | 3.0 V–3.6 V main analog supply; decoupling critical to maintain SNR and THD performance |
| AINx± (Pins 6–13) | Differential analog inputs (A–D) | Four matched pairs (AINA± to AIND±); each accepts ±VREF differential swing with 18 pF input capacitance in track mode |
| REFIN (Pin 17) | External reference input | Accepts 2.5 V–3.3 V precision reference; 1 µF decoupling required to suppress noise-induced gain error drift |
| CS (Pin 18) | Chip select / conversion trigger | Active-low signal initiates simultaneous sampling on falling edge; also frames serial data transfers |
| SDOA–SDOD/ALERT (Pins 19–24) | Serial data outputs / alert indicator | Four dedicated SDO pins enable parallel readout; SDOD doubles as open-drain ALERT output for threshold violation detection |
Key Features
| Feature | Design Value |
|---|---|
| Quad simultaneous sampling | Guarantees phase-coherent acquisition across all four channels for vector-controlled motor drives and I/Q demodulation |
| On-chip oversampling block | Configurable normal or rolling average modes reduce noise floor and relax anti-alias filter requirements without external FPGA logic |
| Differential analog inputs | Wide common-mode range (0.2 V to VREF − 0.2 V) and 76 dB CMRR at 500 kHz reject system-level noise in noisy industrial environments |
| Out-of-range ALERT indicator | Hardware interrupt with 220 ns latency enables real-time fault handling in safety-critical motion control applications |
| Small sampling capacitor (5 pF hold mode) | Reduces settling burden on external driver amplifiers, allowing use of lower-power, higher-impedance signal conditioning stages |
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 four differential resolver secondary windings to compute absolute angular position with sub-arcminute accuracy. Use Value: 4 MSPS throughput and <145 ps channel-to-channel aperture match ensure precise phase alignment between position and current loops, minimizing torque ripple. |
Use Scenario: Real-time three-phase motor current measurement with neutral-point sensing in field-oriented control (FOC). IC Role / Device Role / Timing Role: Quad ADC captures phase A/B/C currents and DC-link voltage synchronously on single CS edge for instantaneous vector calculation. Use Value: 92 dB SNR at 3.3 V reference enables <0.1% current measurement accuracy over 100:1 dynamic range, critical for low-speed torque stability. |
| Data Acquisition Systems | Erbium-Doped Fiber Amplifier (EDFA) |
|
Use Scenario: Modular industrial DAQ module acquiring sensor data from strain gauges, thermocouples, and pressure transducers. IC Role / Device Role / Timing Role: Central 16-bit ADC engine providing synchronized multi-channel acquisition with programmable oversampling for variable bandwidth needs. Use Value: On-chip 2-bit resolution boost (OSR = 8×) delivers 18-bit effective resolution at reduced throughput, eliminating need for external digital averaging logic. |
Use Scenario: Monitoring pump laser diode current, photodiode feedback, and temperature sensors in optical amplifier modules. IC Role / Device Role / Timing Role: Simultaneous digitization of four analog control/monitoring signals with ALERT-driven fault flagging for automatic shutdown. Use Value: −126 dB channel-to-channel isolation prevents crosstalk between high-gain photodiode and high-current pump circuits, preserving signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad, simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7381-4BCPZ | 14-bit resolution, same package and pinout; lower SNR (86 dB typ), no resolution boost feature | Suitable for cost-sensitive motor control where 14-bit precision suffices and oversampling not required | Select when system SNR budget allows ≥6 dB degradation and resolution boost is unnecessary |
| AD4680BCPZ-RL7 | Dual-channel, 16-bit, 4 MSPS, but lacks simultaneous sampling across both channels and has no ALERT function | Applicable only where two independent channels suffice and fault monitoring is handled externally | Choose only if channel count reduction and absence of hardware alert are acceptable trade-offs |
Compared with AD7380-4BCPZ, AD7381-4BCPZ offers identical timing and interface compatibility at lower resolution, while AD4680BCPZ-RL7 reduces channel count and removes simultaneous sampling assurance - making AD7380-4BCPZ uniquely suited for phase-coherent, four-channel, fault-aware industrial sensing.
Availability
AD7380-4BCPZ 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 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 AD7380-4BCPZ belongs to Analog Devices' high-speed precision SAR ADC product line, engineered specifically for demanding real-time control applications requiring simultaneous multi-channel acquisition, robust noise immunity, and deterministic timing behavior.
FAQ
What is the maximum external reference voltage supported by the AD7380-4BCPZ?
The AD7380-4BCPZ accepts an external reference voltage from 2.5 V to 3.3 V on the REFIN pin. Operation above 3.3 V is not supported and violates absolute maximum ratings; using 3.3 V maximizes SNR (92 dB typical) and LSB size (100.7 µV), while 2.5 V yields finer resolution per LSB (76.3 µV) at slightly reduced dynamic range.
Does the AD7380-4BCPZ support true simultaneous sampling across all four channels?
Yes, the AD7380-4BCPZ performs true simultaneous sampling: all four differential input pairs (AINA± through AIND±) acquire analog signals at the exact same instant upon the falling edge of the CS signal. This is confirmed by ≤145 ps aperture delay match and functional block diagram showing shared sampling clock distribution - essential for vector control and I/Q demodulation.
How does the oversampling function improve performance in the AD7380-4BCPZ?
The AD7380-4BCPZ implements configurable oversampling (normal or rolling average) that averages multiple conversions to increase effective resolution and reduce noise. At OSR = 8× and RES = 1, it achieves 97.7 dB SNR and up to 2-bit resolution boost (18-bit effective), directly improving dynamic range without external processing - verified in Table 2 and Figure 22 of the datasheet.
What is the purpose of the REGCAP pin on the AD7380-4BCPZ?
The REGCAP pin on the AD7380-4BCPZ provides access to the output of an internal 1.9 V regulator used exclusively for biasing sensitive analog circuitry. It must be decoupled to GND with a 1 µF capacitor placed close to the pin; failure to do so causes increased noise, gain error drift, and degraded INL/SNR - as specified in Pin Function Descriptions (Table 8) and Applications Information (Section 16).
Can the AD7380-4BCPZ operate with different supply voltages for analog and digital sections?
Yes, the AD7380-4BCPZ supports independent supplies: VCC (3.0 V–3.6 V) powers analog circuitry, while VLOGIC (1.65 V–3.6 V) powers the serial interface. This allows interfacing with 1.8 V, 2.5 V, or 3.3 V controllers without level shifters. Both supplies must be decoupled separately with 1 µF capacitors, as stated in the Power Supply section and Pin Function Descriptions.
AD7380-4BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-UFQFN Exposed Pad, CSP
- Packaging:
- Tray
- 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 FAQ
1.How can I place an order for AD7380-4BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7380-4BCPZ 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 reliable?
The price and inventory of AD7380-4BCPZ 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 is usually 5 days.
3.What payment methods are accepted for AD7380-4BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7380-4BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7380-4BCPZ?
AD7380-4BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7380-4BCPZ 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?
For technical support, including AD7380-4BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7380-4BCPZ requirements.
6.How does Aetrix verify that AD7380-4BCPZ is sourced from the original manufacturer or authorized distributors?
All AD7380-4BCPZ 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 meets industry standards.
7.What is the process for return or replacement of AD7380-4BCPZ?
All AD7380-4BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7380-4BCPZ, 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 part is unused and in its original packaging.
Return procedure for AD7380-4BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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