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Analog Devices Inc. AD7384BCPZ-RL
- Part No.:
- AD7384BCPZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD7384BCPZ-RL.pdf
- Description:
- IC ADC 14BIT SAR 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,081
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Product details
Overview
AD7384BCPZ-RL from Analog Devices is a dual, simultaneous-sampling, 14-bit SAR analog-to-digital converter with pseudo-differential inputs, 4 MSPS throughput, 83.5 dB typical SNR (VREF = 3.3 V), ±1.0 LSB max INL, and integrated oversampling for enhanced dynamic range in motor control current sensing and power quality monitoring applications.
For engineers reviewing the AD7384BCPZ-RL datasheet, AD7384BCPZ-RL pinout, AD7384BCPZ-RL application, or AD7384BCPZ-RL equivalent, this page delivers verified specifications, validated pin functions, confirmed operating conditions (−40°C to +125°C), real-world use cases, and two technically documented alternative parts for system-level design and sourcing decisions.
Technical Context
The AD7384BCPZ-RL implements two independent successive approximation register (SAR) ADC cores with synchronized sampling on the falling edge of CS, enabling true simultaneous capture of two analog signals. Its pseudo-differential input structure accepts AINx+ referenced to AINx− (typically VREF/2), supporting 0 V to VREF input range per channel.
It integrates an on-chip 2.5 V reference (±10 ppm/°C drift) and supports external references up to 3.3 V; digital interface operates at 1.65 V–3.6 V logic supply (VLOGIC), with SPI-compatible serial interface featuring dual SDO outputs (SDOA and SDOB/ALERT) and configurable alert threshold detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonic output and no missing codes across full temperature range. |
| Throughput Rate | 4 MSPS - enables real-time sampling of fast transients in motor current or power line harmonics. |
| SNR (typ) | 83.5 dB @ VREF = 3.3 V - supports >13.5 effective number of bits (ENOB) for precision measurement. |
| INL Error (max) | ±1.0 LSB - ensures accurate amplitude fidelity in closed-loop feedback systems. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and harsh-environment EDFA modules. |
| Supply Voltage | VCC = 3.0 V–3.6 V, VLOGIC = 1.65 V–3.6 V - enables flexible low-voltage microcontroller interfacing with separate I/O domain control. |
| Channel Isolation | −110 dB - prevents crosstalk between dual channels during simultaneous acquisition of position and current signals. |
Pinout & Package
AD7384BCPZ-RL is housed in a 16-lead LFCSP package (3 mm × 3 mm, CP-16-451), with exposed pad requiring connection to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 10) | Ground reference | Low-impedance return path for analog, digital, and reference circuitry; mandatory for noise immunity and accuracy. |
| VLOGIC (Pin 2) | Logic supply input | Decoupled with 1 µF capacitor; sets digital interface voltage level (1.65 V–3.6 V) independent of VCC. |
| REGCAP (Pin 3) | Internal regulator decoupling | Stabilizes internal 1.9 V regulator output; requires 1 µF capacitor to GND for stable operation. |
| VCC (Pin 4) | Analog power supply | Main 3.0 V–3.6 V supply for ADC core and reference; decoupled with 1 µF capacitor to GND. |
| AINB−/AINB+ (Pins 5, 6) | ADC B pseudo-differential inputs | AINB− serves as common-mode reference (typically VREF/2); AINB+ carries signal (0 V to VREF). |
| AINA−/AINA+ (Pins 7, 8) | ADC A pseudo-differential inputs | Identical function to AINB−/AINB+; enables fully independent dual-channel acquisition. |
| REFCAP (Pin 9) | Reference decoupling | Stabilizes internal 2.5 V bandgap reference; requires 0.1 µF capacitor to GND. |
| REFIO (Pin 11) | Reference I/O | Provides 2.5 V internal reference output or accepts 2.49 V–3.4 V external reference; decoupled with 1 µF capacitor. |
| CS (Pin 12) | Chip select / conversion trigger | Active-low signal initiating simultaneous sampling and framing SPI data transfers. |
| SDOA (Pin 13) | Serial data output A | Delivers conversion results from ADC A or register reads; supports daisy-chain configurations. |
| SDOB/ALERT (Pin 14) | Dual-function terminal | Configurable as second data output (SDOB) or active-low alert flag indicating threshold violation. |
| SDI (Pin 15) | Serial data input | Accepts register writes (CONFIGURATION1/2, ALERT thresholds) via SPI command stream. |
| SCLK (Pin 16) | Serial clock input | Drives SPI interface timing; minimum period 12.5 ns supports high-speed 4 MSPS operation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous sampling | Guarantees time-aligned capture of two analog signals-critical for vector-controlled motor drives and I/Q demodulation. |
| On-chip oversampling (OSR up to 8) | Improves SNR by up to 7 dB and reduces effective noise floor without external filtering or FPGA post-processing. |
| Resolution boost mode (RES = 1) | Enables 16-bit-equivalent dynamic range (90.7 dB SNR) at reduced bandwidth, extending usability beyond native 14-bit resolution. |
| Alert function with programmable thresholds | Hardware-triggered interrupt notifies host processor of out-of-range conditions-reducing software polling overhead in safety-critical systems. |
| Pseudo-differential input architecture | Reduces amplifier drive burden via small 5 pF hold-mode input capacitance and relaxes common-mode rejection requirements vs. full differential. |
Applications
| Motor Control Current Sense | Power Quality Monitoring |
|---|---|
Use Scenario: Real-time sampling of phase currents in three-phase inverter legs for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: Dual ADC simultaneously captures two current channels with <100 ps aperture delay match, ensuring precise torque calculation. Use Value: Enables cycle-by-cycle current regulation at 4 MSPS, improving motor efficiency and reducing torque ripple in industrial servo drives. |
Use Scenario: Continuous acquisition of voltage and current waveforms on AC distribution lines for harmonic distortion analysis (THD, SFDR). IC Role / Device Role / Timing Role: Simultaneous sampling of voltage and current enables accurate phase-angle computation and true RMS calculation. Use Value: −110 dB channel isolation and 83.5 dB SNR support Class A power analyzer compliance per IEC 61000-4-30 Ed. 3. |
| Motor Control Position Feedback | Erbium-Doped Fiber Amplifier (EDFA) |
Use Scenario: Acquisition of resolver or encoder sine/cosine signals in high-speed servo motors for position estimation. IC Role / Device Role / Timing Role: Pseudo-differential inputs directly interface with resolver output transformers; dual channels capture sin/cos pairs synchronously. Use Value: ±1.0 LSB INL and 4 MSPS throughput enable sub-arcminute angular resolution in robotics and CNC motion control. |
Use Scenario: Monitoring pump laser diode current and photodiode feedback in optical amplification stages. IC Role / Device Role / Timing Role: Simultaneous sampling of bias current and gain-control photodiode output enables closed-loop gain stabilization. Use Value: Integrated 2.5 V reference and −40°C to +125°C operation ensure stable performance in telecom-grade optical modules without external calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7383BCPZ-RL | 16-bit resolution, 87.5 dB SNR (VREF = 3.3 V), ±2.5 LSB max INL, identical pinout and timing. | Better DC accuracy and dynamic range for higher-precision applications like test equipment or high-end motor drives. | Select when ENOB > 14.5 bits is required; shares same PCB layout but demands tighter reference stability. |
| AD7381BCPZ-RL | 14-bit resolution, 3 MSPS throughput, lower power (75 mW total), same LFCSP package and interface. | Optimized for cost-sensitive, lower-bandwidth systems where 4 MSPS is unnecessary (e.g., basic power monitors). | Choose for reduced system power and BOM cost where 3 MSPS suffices; retains software compatibility but requires timing adjustment. |
Compared with AD7384BCPZ-RL, AD7383BCPZ-RL offers higher resolution at identical speed and footprint, while AD7381BCPZ-RL trades throughput for lower power and cost-enabling tiered design scaling without board redesign.
Availability
AD7384BCPZ-RL is available at Aetrix Electronics and suitable for motor control current sense, power quality monitoring, and EDFA feedback loop applications requiring stable component supply, extended temperature operation, and long-term industrial lifecycle support.
Supply support for AD7384BCPZ-RL 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, with R&D and manufacturing operations worldwide.
The AD7384BCPZ-RL belongs to Analog Devices' high-speed dual SAR ADC product line, designed specifically for real-time, simultaneous acquisition in industrial automation, energy infrastructure, and optical communications systems demanding precision, speed, and ruggedness.
FAQ
What is the maximum sampling rate supported by the AD7384BCPZ-RL?
The AD7384BCPZ-RL supports a maximum throughput rate of 4 MSPS (million samples per second) in normal mode with no oversampling enabled. This rate applies to both ADC channels operating simultaneously, and timing parameters such as tCYC (250 ns) and tCONVERT (190 ns) are specified to guarantee reliable operation at this speed across the full −40°C to +125°C temperature range.
Does the AD7384BCPZ-RL require an external reference voltage?
No, the AD7384BCPZ-RL includes a buffered 2.5 V internal reference with ±10 ppm/°C temperature coefficient and 7 µV rms noise, eliminating the need for external components in many applications. However, it also supports external references from 2.49 V to 3.4 V applied to the REFIO pin-enabling higher SNR (83.5 dB) when using a 3.3 V reference, as documented in Table 3 of the datasheet.
How does the oversampling feature improve performance in the AD7384BCPZ-RL?
The AD7384BCPZ-RL's integrated oversampling block averages multiple conversions to reduce noise and increase effective resolution: at OSR = 4, dynamic range improves to 89 dB; at OSR = 8 with RES = 1 enabled, SNR reaches 90.7 dB-equivalent to ~15.1-bit ENOB. This occurs without increasing SCLK frequency or requiring external DSP resources, making it ideal for bandwidth-constrained systems like motor control feedback loops.
Can the AD7384BCPZ-RL operate with a 1.8 V logic interface?
Yes, the AD7384BCPZ-RL supports VLOGIC from 1.65 V to 3.6 V, including 1.8 V, 2.5 V, and 3.3 V interfaces. Digital pins (SCLK, SDI, CS, SDOA, SDOB/ALERT) are fully compatible with 1.8 V logic levels-verified by VIH = 0.8 × VLOGIC and VIL = 0.2 × VLOGIC specifications-and require only appropriate decoupling (1 µF at VLOGIC and REGCAP) for stable operation.
What is the purpose of the SDOB/ALERT pin on the AD7384BCPZ-RL?
The SDOB/ALERT pin on the AD7384BCPZ-RL is a multifunction terminal that operates either as Serial Data Output B (SDOB) to read ADC B conversion results independently, or as an active-low ALERT output signaling when a conversion result exceeds user-defined high/low thresholds stored in ALERT_HIGH_THRESHOLD and ALERT_LOW_THRESHOLD registers. Mode selection is controlled via the SDO bit in CONFIGURATION2 and ALERT_EN bit in CONFIGURATION1.
AD7384BCPZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 4M
- Number of Inputs:
- 2
- Input Type:
- Pseudo-Differential
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:2
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 3V ~ 3.6V
- Voltage - Supply, Digital:
- 1.65V ~ 3.6V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-LFCSP (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7384BCPZ-RL FAQ
1.How can I place an order for AD7384BCPZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7384BCPZ-RL 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 AD7384BCPZ-RL reliable?
The price and inventory of AD7384BCPZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7384BCPZ-RL is usually 5 days.
3.What payment methods are accepted for AD7384BCPZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7384BCPZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7384BCPZ-RL?
AD7384BCPZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7384BCPZ-RL 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 AD7384BCPZ-RL?
For technical support, including AD7384BCPZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7384BCPZ-RL requirements.
6.How does Aetrix verify that AD7384BCPZ-RL is sourced from the original manufacturer or authorized distributors?
All AD7384BCPZ-RL 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 AD7384BCPZ-RL meets industry standards.
7.What is the process for return or replacement of AD7384BCPZ-RL?
All AD7384BCPZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with AD7384BCPZ-RL, 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 AD7384BCPZ-RL part is unused and in its original packaging.
Return procedure for AD7384BCPZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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