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Analog Devices Inc. AD7384BCPZ-RL7
- Part No.:
- AD7384BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD7384BCPZ-RL7.pdf
- Description:
- IC ADC 14BIT SAR 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,979
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Product details
Overview
AD7384BCPZ-RL7 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-RL7 datasheet, AD7384BCPZ-RL7 pinout, AD7384BCPZ-RL7 application, or AD7384BCPZ-RL7 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 decisions.
Technical Context
The AD7384BCPZ-RL7 implements two independent successive approximation register (SAR) ADC cores sharing a common serial interface, enabling true simultaneous sampling of two analog channels on the falling edge of CS. Its pseudo-differential input structure requires AINx− tied to VREF/2, supporting 0 V to VREF input range on AINx+.
On-chip oversampling (OSR up to 8) and resolution boost (RES = 1) are configurable via registers to improve SNR by up to 7.2 dB (e.g., 90.7 dB at OSR = 8), while the dual-alert function monitors both conversion results against programmable high/low thresholds using the SDOB/ALERT pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees no missing codes and supports 16,384 discrete output levels for precision current/voltage measurement. |
| Throughput Rate | 4 MSPS - enables real-time capture of fast transients in motor phase currents or power line harmonics without interleaving latency. |
| SNR (typical) | 83.5 dB at 1 kHz, VREF = 3.3 V - provides >13.8 effective number of bits (ENOB) for high-fidelity signal reconstruction. |
| INL Error (max) | ±1.0 LSB - ensures monotonicity and <0.006% full-scale linearity error across temperature (−40°C to +125°C). |
| Channel Isolation | −110 dB - prevents crosstalk between ADC A and ADC B during simultaneous sampling of adjacent high-noise signals. |
| Oversampling Ratio | Configurable up to OSR = 8 - reduces noise floor by 9 dB and relaxes anti-alias filter requirements in bandwidth-limited systems. |
| Supply Range | VCC = 3.0 V to 3.6 V; VLOGIC = 1.65 V to 3.6 V - supports mixed-voltage digital interfacing with 1.8 V/2.5 V/3.3 V controllers. |
Pinout & Package
AD7384BCPZ-RL7 is housed in a 16-lead LFCSP package (3 mm × 3 mm, 0.5 mm pitch) with exposed pad requiring connection to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 10) | Ground reference | Dual ground pins minimize return path impedance for analog and digital sections; must be low-inductance connected to PCB ground plane. |
| VLOGIC (Pin 2) | Logic supply | Independent 1.65–3.6 V rail decoupled with 1 µF capacitor; sets I/O voltage levels without affecting analog core operation. |
| VCC (Pin 4) | Analog power supply | 3.0–3.6 V main supply decoupled with 1 µF capacitor; powers SAR core, reference, and internal LDO. |
| AINA+/AINA−, AINB+/AINB− (Pins 7, 8, 5, 6) | Pseudo-differential analog inputs | Each pair accepts 0 V to VREF differential swing; AINx− is biased at VREF/2, reducing common-mode sensitivity and amplifier drive burden. |
| REFIO (Pin 11) | Reference I/O | Bi-directional pin: outputs internal 2.5 V reference or accepts external 2.49–3.4 V reference; requires 1 µF decoupling for stability. |
| CS (Pin 12) | Chip select | Active-low signal initiating conversion and framing SPI transfers; falling edge triggers simultaneous sample-and-hold acquisition. |
| SDOA (Pin 13) | Serial data output A | Primary SPI output delivering ADC A or ADC B result (selected via register); supports daisy-chain configurations. |
| SDOB/ALERT (Pin 14) | Serial data output B / alert | Configurable dual-function pin: outputs ADC B data or asserts active-low ALERT when conversion exceeds programmed thresholds. |
| SDI (Pin 15) | Serial data input | Accepts register writes (CONFIGURATION1/2, ALERT thresholds); supports command-based configuration without external logic. |
| SCLK (Pin 16) | Serial clock | Up to 50 MHz clock (tSCLK = 12.5 ns min); timing-critical for readback latency (tSDOH = 2 ns hold time) and low-jitter sampling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous sampling | True concurrent acquisition on both ADC A and ADC B with <100 ps aperture delay match - essential for vector-controlled motor drives requiring synchronized current measurements. |
| Integrated oversampling block | Programmable OSR up to 8 with rolling or normal average modes - improves SNR by 7.2 dB and reduces effective sampling rate demand on host processor. |
| Resolution boost function | RES = 1 mode increases effective resolution beyond 14 bits (e.g., 90.7 dB SNR at OSR = 8) - extends dynamic range without external hardware averaging. |
| Alert threshold monitoring | Independent high/low threshold registers per channel trigger SDOB/ALERT pin - enables real-time overcurrent or overvoltage fault detection without host polling. |
| Wide temperature operation | Specified from −40°C to +125°C with <±0.07% FS gain error match - suitable for under-hood automotive and industrial motor control environments. |
Applications
| Motor Control Current Sense | Power Quality Monitoring |
|---|---|
|
Use Scenario: Real-time sampling of phase currents in three-phase inverters for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: Dual ADC simultaneously captures IA and IB currents at 4 MSPS with <100 ps inter-channel skew, feeding DSP/FPGA for torque ripple minimization. Use Value: Simultaneous sampling eliminates phase misalignment errors; 83.5 dB SNR ensures accurate RMS calculation of distorted current waveforms up to 100 kHz. |
Use Scenario: Continuous monitoring of voltage and current harmonics in smart grid metering and arc-fault detection systems. IC Role / Device Role / Timing Role: One ADC channel measures line voltage while the other samples neutral current, enabling real-time THD and SFDR computation. Use Value: −110 dB channel isolation prevents cross-coupling of high-frequency switching noise; oversampling supports Class A accuracy per IEC 61000-4-30 Ed. 3. |
| Sonar Signal Acquisition | Erbium-Doped Fiber Amplifier (EDFA) |
|
Use Scenario: Digitizing echo returns in ultrasonic distance sensors and underwater sonar transceivers with wide dynamic range requirements. IC Role / Device Role / Timing Role: ADC A acquires transmit pulse reflection envelope while ADC B captures ambient noise baseline for adaptive thresholding. Use Value: 4 MSPS throughput resolves sub-microsecond time-of-flight differences; 83.5 dB SNR enables detection of weak echoes buried in thermal noise. |
Use Scenario: Closed-loop bias control of pump lasers in optical amplifiers, requiring precise monitoring of photodiode currents and thermistor voltages. IC Role / Device Role / Timing Role: Simultaneously samples laser diode current (ADC A) and TEC voltage (ADC B) to maintain gain flatness across C-band wavelengths. Use Value: ±1.0 LSB INL ensures stable setpoint tracking over temperature; 1.65–3.6 V VLOGIC compatibility allows direct interface with FPGA I/O banks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, simultaneous-sampling SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7383BCPZ-RL7 | 16-bit resolution, 87.5 dB SNR (VREF = 3.3 V), ±2.5 LSB max INL - higher resolution but lower speed efficiency per bit. | Better suited for high-precision DC-coupled measurements (e.g., strain gauge bridges) where 16-bit linearity outweighs SNR-per-watt trade-offs. | Select AD7383BCPZ-RL7 when ENOB > 14.5 bits is required and system clock budget allows margin for oversampling overhead. |
| AD7381BCPZ-RL7 | 14-bit, 3 MSPS throughput, 82 dB SNR, no oversampling block - lower power (75 mW vs. 106 mW) and simplified register map. | Ideal for cost-sensitive, lower-bandwidth applications like HVAC sensor fusion where 3 MSPS suffices and oversampling is unnecessary. | Choose AD7381BCPZ-RL7 when system bandwidth ≤ 1.5 MHz and thermal/power constraints preclude 4 MSPS operation. |
Compared with AD7383BCPZ-RL7, AD7384BCPZ-RL7 trades 2 LSBs of INL tolerance and 4 dB SNR for 25% higher throughput and identical oversampling capability; versus AD7381BCPZ-RL7, it adds 1 MSPS throughput and integrated oversampling at +40% power, enabling higher-fidelity real-time analysis in compact form factor.
Availability
AD7384BCPZ-RL7 is available at Aetrix Electronics and suitable for motor control position feedback, power quality monitoring, and sonar signal acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7384BCPZ-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, with R&D and manufacturing infrastructure spanning 15 countries.
The AD738x family was designed specifically for high-speed, dual-channel data acquisition in demanding industrial and automotive systems-emphasizing simultaneous sampling fidelity, on-chip intelligence (oversampling/alert), and robust operation from −40°C to +125°C.
FAQ
What is the maximum supported external reference voltage for AD7384BCPZ-RL7?
The AD7384BCPZ-RL7 accepts an external reference voltage from 2.49 V to 3.4 V on the REFIO pin. Operation with 3.3 V external reference yields 83.5 dB typical SNR and is explicitly validated in the datasheet. Reference voltage must be stable and decoupled with a 1 µF capacitor to REFIO, and the REFSEL bit in CONFIGURATION1 must be set to 1 after VCC and VLOGIC stabilization.
Does AD7384BCPZ-RL7 support true simultaneous sampling of both channels?
Yes, AD7384BCPZ-RL7 performs true simultaneous sampling: both ADC A and ADC B acquire their respective analog inputs on the same falling edge of the CS signal, with aperture delay match specified at ≤100 ps. This eliminates phase skew between channels-critical for vector control and I/Q demodulation where timing coherence directly impacts control loop stability.
How does the oversampling function improve performance in AD7384BCPZ-RL7?
The AD7384BCPZ-RL7's oversampling block averages multiple conversions (OSR up to 8) to reduce quantization and thermal noise, improving SNR by up to 7.2 dB (e.g., from 83.5 dB to 90.7 dB). It also lowers effective sampling rate demands on the host processor and relaxes anti-alias filter roll-off requirements-enabling simpler, lower-cost front-end designs without sacrificing dynamic range.
What is the purpose of the SDOB/ALERT pin on AD7384BCPZ-RL7?
The SDOB/ALERT pin on AD7384BCPZ-RL7 is multifunctional: configured as SDOB, it outputs ADC B conversion results; configured as ALERT, it asserts active-low when either ADC A or ADC B result exceeds user-programmed high/low thresholds stored in ALERT_HIGH_THRESHOLD and ALERT_LOW_THRESHOLD registers. This enables autonomous fault detection without continuous host polling.
Can AD7384BCPZ-RL7 operate with a 1.8 V logic interface?
Yes, AD7384BCPZ-RL7 supports 1.8 V logic interfaces via its dedicated VLOGIC supply pin (Pin 2), which accepts 1.65 V to 3.6 V. When VLOGIC = 1.8 V, digital inputs (CS, SCLK, SDI) recognize VIH ≥ 1.44 V and VIL ≤ 0.36 V, while SDOA and SDOB/ALERT outputs drive VOH ≥ 1.5 V and VOL ≤ 0.4 V-ensuring reliable communication with 1.8 V FPGAs and microcontrollers without level shifters.
AD7384BCPZ-RL7 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-RL7 FAQ
1.How can I place an order for AD7384BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7384BCPZ-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 AD7384BCPZ-RL7 reliable?
The price and inventory of AD7384BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7384BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7384BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7384BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7384BCPZ-RL7?
AD7384BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7384BCPZ-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 AD7384BCPZ-RL7?
For technical support, including AD7384BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7384BCPZ-RL7 requirements.
6.How does Aetrix verify that AD7384BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7384BCPZ-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 AD7384BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7384BCPZ-RL7?
All AD7384BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7384BCPZ-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 AD7384BCPZ-RL7 part is unused and in its original packaging.
Return procedure for AD7384BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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