My Inquiry
My Account
Analog Devices Inc. AD7384-4BCPZ
- Part No.:
- AD7384-4BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-UFQFN Exposed Pad, CSP
- Datasheet:
-
AD7384-4BCPZ.pdf
- Description:
- PSEUDO DIFFERL INPUT QUAD 14-BIT
- Quantity:
- Payment:
- Shipping:
Inventory:290
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7384-4BCPZ from Analog Devices is a 14-bit, quad-channel, simultaneous-sampling SAR ADC with pseudo-differential inputs, 4 MSPS throughput, 83.5 dB typical SNR (VREF = 3.3 V), and integrated oversampling for up to 2-bit resolution boost - used in motor current sensing and high-speed data acquisition systems.
For engineers reviewing the AD7384-4BCPZ datasheet, AD7384-4BCPZ pinout, AD7384-4BCPZ application, or AD7384-4BCPZ equivalent, key selection criteria include its 4 MSPS quad sampling rate, −40°C to +125°C operation, LFCSP-24 package, 2.5 V internal reference (or external up to 3.3 V), and ALERT output for out-of-range detection.
Technical Context
The AD7384-4BCPZ implements four independent successive approximation register (SAR) cores with shared control logic and a unified serial interface. Each channel uses a pseudo-differential input structure referenced to VREF/2, enabling robust common-mode rejection (−76 dB at 500 kHz) and low amplifier drive burden via 18 pF track-mode input capacitance.
It supports dual-mode serial communication: 4-wire SPI (SDOA–SDOD) for full-throughput concurrent readout, or 1-wire mode for reduced pin count; logic supply (VLOGIC) is independently configurable from 1.65 V to 3.6 V, ensuring compatibility with 1.8 V, 2.5 V, and 3.3 V digital systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit native; supports 2-bit resolution boost via oversampling (OSR = 8×), yielding effective 16-bit dynamic range at reduced bandwidth. |
| Throughput Rate | 4 MSPS per channel, simultaneous sampling across all four channels - enables synchronized capture of multi-axis motor currents or phase signals. |
| SNR | 83.5 dB typical (VREF = 3.3 V, fIN = 1 kHz); improves to 91.3 dB with OSR = 8× - critical for high-fidelity signal reconstruction in EDFA and IQ demodulation. |
| INL Error | ±0.35 LSB max (external 3.3 V reference) - ensures linearity-critical applications like closed-loop motor position feedback meet tight error budgets. |
| Channel Isolation | −110 dB - prevents crosstalk between simultaneously sampled channels in multi-sensor systems. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial drives, and harsh-environment embedded control. |
| Reference Options | Internal 2.5 V ±10 ppm/°C bandgap reference or external 2.5 V–3.3 V source - allows system-level reference sharing or precision calibration. |
Pinout & Package
AD7384-4BCPZ is housed in a 24-lead, 4 mm × 4 mm LFCSP (CP-24-251) with exposed pad (EPAD) requiring connection to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,5,14,16) | Ground reference | Four dedicated ground pins minimize ground bounce and improve noise immunity across analog and digital domains. |
| VLOGIC (Pin 2) | Logic interface supply | Independent 1.65 V–3.6 V supply enables seamless interfacing with mixed-voltage microcontrollers and FPGAs. |
| REGCAP (Pin 3) | Internal regulator decoupling | 1 µF capacitor stabilizes 1.9 V internal rail for logic circuitry - essential for timing stability and low-noise operation. |
| VCC (Pin 4) | Analog power supply | 3.0 V–3.6 V supply powers SAR core and analog front-end; requires local 1 µF decoupling to suppress switching noise. |
| AINA± to AIND± (Pins 6–13) | Pseudo-differential analog inputs | Four matched pairs (A–D), each with AINx− tied to VREF/2; accepts 0 V to VREF on AINx+ - simplifies sensor interface without differential amplifiers. |
| REFCAP (Pin 15) | Bandgap reference decoupling | 0.1 µF capacitor ensures low-noise 2.5 V reference stability - critical for DC accuracy and INL performance. |
| REFIO (Pin 17) | Reference I/O | Configurable as 2.5 V reference output or 2.5 V–3.3 V external reference input - enables flexible system-level reference architecture. |
| CS (Pin 18) | Chip select / conversion trigger | Active-low signal initiates simultaneous sampling on falling edge - provides deterministic timing for time-critical control loops. |
| SDOA–SDOC (Pins 19–23) | Serial data outputs | Four dedicated SDO lines enable parallel readout of all channels in one SPI frame - eliminates inter-channel latency skew. |
| SDOD/ALERT (Pin 24) | Multi-function terminal | Configurable as fourth data output or active-low ALERT flag signaling threshold violation - supports real-time fault detection without host polling. |
Key Features
| Feature | Design Value |
|---|---|
| Quad simultaneous sampling | Four independent SAR cores sample and convert concurrently on single CS edge - preserves phase relationships for vector control and IQ demodulation. |
| Oversampling block | Programmable OSR up to 8× reduces noise floor by ~6 dB per doubling, enabling higher effective resolution without external filtering or post-processing. |
| Pseudo-differential input architecture | Each channel uses AINx− as common-mode reference (typically VREF/2), relaxing PCB layout constraints and eliminating need for matched external diff-amps. |
| Out-of-range ALERT output | Dedicated hardware comparator monitors conversion results against programmable thresholds - triggers immediate interrupt for overcurrent or overvoltage protection. |
| Temperature-rated operation | Specified performance maintained from −40°C to +125°C - validated for use in industrial inverters, traction drives, and aerospace telemetry systems. |
Applications
| Motor Control Current Sense | Data Acquisition Systems |
|---|---|
Use Scenario: Real-time measurement of three-phase motor winding currents in servo drives and inverters. IC Role / Device Role / Timing Role: Simultaneous sampling of all current sensors at 4 MSPS to reconstruct instantaneous current vectors for field-oriented control (FOC). Use Value: Eliminates phase skew between channels, enabling accurate torque estimation and reducing current ripple by >15% versus sequential sampling ADCs. | Use Scenario: High-channel-count, high-speed data logging in test equipment and industrial process monitoring. IC Role / Device Role / Timing Role: Quad-channel front-end capturing synchronized analog waveforms from vibration, temperature, and pressure sensors at 4 MSPS. Use Value: Reduces system component count by replacing four discrete ADCs and associated support circuitry - cuts BOM cost by ~35% and board area by 40%. |
| Erbium-Doped Fiber Amplifier (EDFA) | Inphase and Quadrature Demodulation |
Use Scenario: Monitoring pump laser bias currents and photodiode feedback in optical telecom amplifiers. IC Role / Device Role / Timing Role: Precision 14-bit digitization of fast transient signals (e.g., laser turn-on spikes) with 91.3 dB SNR in oversampled mode. Use Value: Enables closed-loop gain stabilization within ±0.1 dB accuracy over temperature - meets Telcordia GR-468 reliability requirements. | Use Scenario: Baseband sampling of I/Q signals in software-defined radio and radar receivers. IC Role / Device Role / Timing Role: Simultaneous capture of in-phase and quadrature components with <145 ps aperture delay match between channels. Use Value: Maintains <0.1° phase coherence between I and Q paths - critical for EVM <1% in 5G NR and Wi-Fi 6E systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7383-4BCPZ | 16-bit resolution, 86.7 dB SNR (typ), higher INL (±3.8 LSB), same package and pinout | Better DC precision for position feedback; lower noise floor for low-frequency sensing | Select when absolute linearity and 16-bit fidelity outweigh throughput efficiency. |
| AD7381-4BCPZ | 14-bit, 2 MSPS (half throughput), no oversampling block, identical pinout and interface | Lower power (120 mW vs. 186.6 mW), suitable for battery-powered DAQ where 4 MSPS is unnecessary | Choose for cost-sensitive, lower-bandwidth systems where oversampling and full 4 MSPS are not required. |
Compared with AD7383-4BCPZ, the AD7384-4BCPZ trades 2 bits of resolution for improved speed/power efficiency and superior oversampling flexibility; versus AD7381-4BCPZ, it doubles throughput and adds resolution boost - making it optimal for real-time motor control and broadband signal analysis.
Availability
AD7384-4BCPZ is available at Aetrix Electronics and suitable for motor control position feedback, Erbium-doped fiber amplifier (EDFA) monitoring, and high-speed data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for AD7384-4BCPZ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The AD738x-4 product line delivers quad simultaneous-sampling SAR ADCs optimized for real-time control and high-fidelity signal capture in space-constrained, thermally demanding environments.
FAQ
What is the maximum sampling rate supported by the AD7384-4BCPZ?
The AD7384-4BCPZ supports a maximum throughput rate of 4 MSPS per channel with simultaneous sampling across all four channels. This rate is achievable using the 4-wire SPI interface with SCLK period ≤12.5 ns. The device maintains specified AC performance (e.g., 83.5 dB SNR) at this full rate when powered from 3.3 V and using a 3.3 V reference.
Does the AD7384-4BCPZ include an internal voltage reference?
Yes, the AD7384-4BCPZ integrates a buffered 2.5 V bandgap reference with 10 ppm/°C temperature coefficient and 7 µV RMS noise. It is accessible via the REFIO pin and requires a 1 µF decoupling capacitor on REFCAP. The internal reference can be disabled in favor of an external 2.5 V–3.3 V source by setting the REFSEL bit in CONFIGURATION1 register.
How does the oversampling feature improve performance in the AD7384-4BCPZ?
The AD7384-4BCPZ's oversampling block supports OSR up to 8×, increasing effective resolution by up to 2 bits and improving SNR by up to 6 dB per OSR doubling. At OSR = 8×, SNR reaches 91.3 dB (typical), enabling 16-bit-equivalent dynamic range at reduced bandwidth - ideal for applications like EDFA gain control where noise floor reduction is critical.
What is the function of the SDOD/ALERT pin on the AD7384-4BCPZ?
The SDOD/ALERT pin on the AD7384-4BCPZ is a multifunction terminal that operates either as Serial Data Output D or as an active-low ALERT indicator. When configured as ALERT, it asserts low when any conversion result exceeds user-programmed high/low thresholds stored in ALERT_HIGH_THRESHOLD and ALERT_LOW_THRESHOLD registers - enabling hardware-triggered fault response without CPU polling.
Is the AD7384-4BCPZ pin-compatible with other devices in the AD738x-4 family?
Yes, the AD7384-4BCPZ is fully pin-compatible with AD7383-4BCPZ (16-bit) and AD7381-4BCPZ (14-bit, 2 MSPS) in the same 24-lead LFCSP package. All share identical pin assignments, power sequencing, and SPI interface protocol - allowing drop-in replacement during design iteration or performance tiering without PCB revision.
AD7384-4BCPZ 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:
- 14
- Sampling Rate (Per Second):
- 4M
- Number of Inputs:
- 4
- Input Type:
- Pseudo-Differential
- Data Interface:
- Serial, SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:4
- Number of A/D Converters:
- 4
- 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:
- 24-LFCSP (4x4)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7384-4BCPZ FAQ
1.How can I place an order for AD7384-4BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7384-4BCPZ 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 AD7384-4BCPZ reliable?
The price and inventory of AD7384-4BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7384-4BCPZ is usually 5 days.
3.What payment methods are accepted for AD7384-4BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7384-4BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7384-4BCPZ?
AD7384-4BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7384-4BCPZ 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 AD7384-4BCPZ?
For technical support, including AD7384-4BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7384-4BCPZ requirements.
6.How does Aetrix verify that AD7384-4BCPZ is sourced from the original manufacturer or authorized distributors?
All AD7384-4BCPZ 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 AD7384-4BCPZ meets industry standards.
7.What is the process for return or replacement of AD7384-4BCPZ?
All AD7384-4BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7384-4BCPZ, 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 AD7384-4BCPZ part is unused and in its original packaging.
Return procedure for AD7384-4BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7384-4BCPZ Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
