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Analog Devices Inc. AD7388-4BCPZ-RL7
- Part No.:
- AD7388-4BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-UFQFN Exposed Pad, CSP
- Datasheet:
-
AD7388-4BCPZ-RL7.pdf
- Description:
- 3MSPS 12-BIT QUAD SINGLE ENDED S
- Quantity:
- Payment:
- Shipping:
Inventory:2,005
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Product details
Overview
AD7388-4BCPZ-RL7 from Analog Devices is a 12-bit, quad, simultaneous-sampling SAR ADC with single-ended analog inputs, 4 MSPS throughput, ±0.2 LSB typical INL, and integrated 2.5 V reference (10 ppm/°C max). It operates from −40°C to +125°C in motor control current sensing and traveling wave fault detection systems.
For engineers reviewing the AD7388-4BCPZ-RL7 datasheet, AD7388-4BCPZ-RL7 pinout, AD7388-4BCPZ-RL7 application, or AD7388-4BCPZ-RL7 equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal and timing behavior, and real-world use context for high-speed industrial data acquisition.
Technical Context
The AD7388-4BCPZ-RL7 implements four independent successive approximation register (SAR) cores with shared control logic and a unified serial interface supporting 1-wire, 2-wire, or 4-wire output modes. Each ADC pair (AINA0/AINA1 through AIND0/AIND1) samples simultaneously on the falling edge of CS, with aperture jitter of 20 ps and 110 ns acquire time.
It integrates an oversampling block enabling up to 2-bit resolution boost (e.g., 80 dB SNR at OSR = 8), configurable alert thresholds via registers, and dual-reference support-internal 2.5 V bandgap (±5 mV initial accuracy) or external 2.5 V–3.3 V input on REFIO-with dedicated REFCAP and REGCAP decoupling pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit-guarantees no missing codes across full temperature range; supports precise amplitude quantization in closed-loop motor current feedback. |
| Throughput Rate | 4 MSPS per channel pair-enables real-time sampling of four synchronized signals at ≤250 ns inter-conversion interval. |
| INL (typ) | ±0.2 LSB-ensures <0.005% full-scale linearity error, critical for accurate position/phase reconstruction in I/Q demodulation. |
| SNR (typ) | 73.7 dB at VREF = 3.3 V-translates to ~12.3 effective bits (ENOB) for clean signal capture in noisy industrial environments. |
| Operating Temp | −40°C to +125°C-validated for under-hood automotive motor control and industrial drive applications without derating. |
| Reference | 2.5 V internal (10 ppm/°C max)-eliminates external reference component count while maintaining stable full-scale calibration over temperature. |
| Package | 24-lead LFCSP (4 mm × 4 mm, 0.5 mm pitch)-supports high-density PCB layouts with low thermal resistance (θJA = 48.4°C/W). |
Pinout & Package
AD7388-4BCPZ-RL7 uses a 24-lead lead frame chip scale package (LFCSP) with exposed pad (EPAD) requiring GND connection for thermal and electrical integrity. Pin numbering follows standard JEDEC outline CP-24-251.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 5, 14, 16) | Ground reference | Four dedicated ground pins minimize return path impedance and reduce crosstalk between ADC channels. |
| VLOGIC (Pin 2) | Logic supply | Independent 1.65 V–3.6 V rail enables interfacing with 1.8 V/2.5 V/3.3 V microcontrollers without level shifters. |
| REGCAP (Pin 3) | Internal regulator decoupling | 1 µF capacitor stabilizes 1.9 V internal logic regulator; required for reliable register access and low-noise operation. |
| VCC (Pin 4) | Analog power supply | 3.0 V–3.6 V supply powers SAR core and reference; 1 µF decoupling mandatory to suppress switching noise. |
| AINA0/AINA1 (Pins 12–13) | ADC A analog inputs | Single-ended, multiplexed pair for Channel A; 18 pF track-mode capacitance reduces external driver burden. |
| REFIO (Pin 17) | Reference I/O | Configurable as 2.5 V output or 2.5 V–3.3 V input; requires 1 µF decoupling to maintain reference stability during conversion. |
| CS (Pin 18) | Chip select | Active-low signal initiates conversion and frames serial data; falling edge triggers simultaneous sampling across all four ADCs. |
| SDOA–SDOD/ALERT (Pins 19–24) | Data outputs / Alert | Four dedicated SDO pins enable parallel readout; SDOD doubles as ALERT output for out-of-range threshold detection. |
Key Features
| Feature | Design Value |
|---|---|
| Quad simultaneous sampling | Four independent SAR cores sample on same CS edge-enables true phase-coherent acquisition for motor current vector analysis. |
| Oversampling with resolution boost | Up to 2-bit effective resolution increase (e.g., 80 dB SNR at OSR = 8)-reduces need for external filtering and lowers SCLK speed requirements. |
| Out-of-range alert (ALERT) | Dedicated interrupt pin (SDOD) asserts low when any channel exceeds programmable high/low thresholds-enables real-time fault response without host polling. |
| Channel-to-channel isolation | −120 dB-prevents crosstalk-induced errors in multi-sensor systems like EDFA gain monitoring or multi-phase current sensing. |
| Low aperture jitter | 20 ps RMS-preserves signal integrity at high input frequencies (e.g., 100 kHz), ensuring accurate THD and SFDR performance. |
Applications
| Motor Control Current Sense | Traveling Wave Fault Detection |
|---|---|
|
Use Scenario: Real-time measurement of three-phase motor currents with fourth channel reserved for DC bus voltage or temperature. IC Role / Device Role / Timing Role: Simultaneous sampling of all four analog inputs ensures zero phase skew between current vectors for accurate field-oriented control (FOC). Use Value: ±0.2 LSB INL and 73.7 dB SNR enable sub-0.1% current measurement accuracy at 4 MSPS, directly improving torque ripple suppression. |
Use Scenario: High-speed transient capture along power transmission lines to detect traveling wave reflections caused by faults. IC Role / Device Role / Timing Role: Quad ADC captures synchronized voltage/current waveforms at nanosecond-level timing alignment (310 ps aperture delay match). Use Value: 4 MSPS throughput and −120 dB channel isolation preserve waveform fidelity across multiple sensors, enabling <10 m fault location accuracy. |
| Erbium-Doped Fiber Amplifier (EDFA) | In-Phase and Quadrature Demodulation |
|
Use Scenario: Monitoring pump laser bias, photodiode feedback, gain tilt, and output power in optical amplifier modules. IC Role / Device Role / Timing Role: Simultaneous sampling of four analog control/monitoring points ensures correlated gain and temperature compensation without time skew. Use Value: Integrated 2.5 V reference (10 ppm/°C) eliminates drift-induced gain calibration errors across operating temperature range (−40°C to +125°C). |
Use Scenario: Digitizing I/Q baseband signals in RF receivers for software-defined radio or radar front ends. IC Role / Device Role / Timing Role: Four-channel simultaneous sampling captures in-phase (I), quadrature (Q), and two auxiliary signals (e.g., LO monitor, RSSI) with identical aperture timing. Use Value: 20 ps aperture jitter and 73.7 dB SNR maintain >60 dB image rejection ratio, directly improving EVM and adjacent channel power ratio (ACPR). |
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 |
|---|---|---|---|
| AD7387-4BCPZ-RL7 | 14-bit resolution, ±1 LSB INL (typ), 82.4 dB SNR (typ) | Better dynamic range for medium-precision sensor fusion; higher cost and power vs. AD7388-4BCPZ-RL7 | Select when ENOB > 13.3 bits required and 4 MSPS throughput remains essential. |
| AD7386-4BCPZ-RL7 | 16-bit resolution, ±4 LSB INL (typ), 84.7 dB SNR (typ), higher power (45 mA) | Higher precision for metrology-grade acquisition; not suitable for cost- or power-constrained designs | Choose only if system demands ≥15.3 ENOB and can accommodate 25% higher supply current. |
Compared with AD7387-4BCPZ-RL7 and AD7386-4BCPZ-RL7, the AD7388-4BCPZ-RL7 delivers optimal balance of speed, linearity (±0.2 LSB), and power efficiency (45 mA at 4 MSPS) for industrial motor control and fault detection where 12-bit fidelity suffices and thermal headroom is constrained.
Availability
AD7388-4BCPZ-RL7 is available at Aetrix Electronics and suitable for motor control current sense, traveling wave fault detection, EDFA monitoring, and I/Q demodulation applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7388-4BCPZ-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 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 AD738x-4 family was designed specifically for high-speed, multi-channel industrial data acquisition-emphasizing simultaneous sampling integrity, on-chip reference stability, and robust serial interface flexibility in harsh environments.
FAQ
What is the maximum sampling rate of the AD7388-4BCPZ-RL7?
The AD7388-4BCPZ-RL7 achieves a maximum throughput rate of 4 MSPS per channel pair in single-channel-pair mode, with 250 ns minimum inter-conversion interval. This rate is maintained across the full −40°C to +125°C operating temperature range and is enabled by its quad SAR architecture and optimized internal timing.
Does the AD7388-4BCPZ-RL7 require an external reference voltage?
No-the AD7388-4BCPZ-RL7 includes a factory-trimmed 2.5 V internal reference with 10 ppm/°C maximum temperature coefficient and ±5 mV initial accuracy. An external reference (2.5 V–3.3 V) may be used via the REFIO pin, but it is optional and requires configuration of the REFSEL bit in the Configuration 1 register.
How does the ALERT function work on the AD7388-4BCPZ-RL7?
The ALERT function is implemented on the SDOD pin, which asserts low when any of the four ADC channels exceeds user-programmed high or low thresholds stored in the Alert High/Low Threshold Registers. The assertion occurs within 220 ns of CS falling edge, enabling deterministic fault response without host CPU polling overhead.
What package type is used for the AD7388-4BCPZ-RL7?
The AD7388-4BCPZ-RL7 is housed in a 24-lead lead frame chip scale package (LFCSP), designated CP-24-251, measuring 4 mm × 4 mm with 0.5 mm pitch and an exposed thermal pad. This package provides low θJA (48.4°C/W) and supports high-density routing for space-constrained industrial PCBs.
Can the AD7388-4BCPZ-RL7 perform oversampling, and what benefit does it provide?
Yes-the AD7388-4BCPZ-RL7 includes an on-chip oversampling block supporting normal averaging and rolling average modes. At OSR = 8, it delivers up to 2-bit resolution boost, increasing SNR from 73.7 dB to 80 dB and reducing effective noise floor-enabling cleaner signal capture without external hardware filters or slower clock rates.
AD7388-4BCPZ-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:
- 12
- Sampling Rate (Per Second):
- 4M
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-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:
- 3V ~ 3.6V
- Features:
- Alert Function, Configurable Resolution, Multiplexed Input, Oversampling, Resolution Boost, Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 24-LFCSP (4x4)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7388-4BCPZ-RL7 FAQ
1.How can I place an order for AD7388-4BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7388-4BCPZ-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 AD7388-4BCPZ-RL7 reliable?
The price and inventory of AD7388-4BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7388-4BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7388-4BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7388-4BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7388-4BCPZ-RL7?
AD7388-4BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7388-4BCPZ-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 AD7388-4BCPZ-RL7?
For technical support, including AD7388-4BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7388-4BCPZ-RL7 requirements.
6.How does Aetrix verify that AD7388-4BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7388-4BCPZ-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 AD7388-4BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7388-4BCPZ-RL7?
All AD7388-4BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7388-4BCPZ-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 AD7388-4BCPZ-RL7 part is unused and in its original packaging.
Return procedure for AD7388-4BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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