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Analog Devices Inc. AD7383BCPZ-RL7
- Part No.:
- AD7383BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD7383BCPZ-RL7.pdf
- Description:
- IC ADC 16BIT SAR 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,396
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Product details
Overview
AD7383BCPZ-RL7 from Analog Devices is a dual, simultaneous-sampling, 16-bit SAR analog-to-digital converter with pseudo-differential inputs, 4 MSPS throughput, 87.5 dB typical SNR (VREF = 3.3 V), ±2.5 LSB INL max, and integrated oversampling for enhanced dynamic range-used in motor control position feedback and power quality monitoring systems.
For engineers reviewing the AD7383BCPZ-RL7 datasheet, AD7383BCPZ-RL7 pinout, AD7383BCPZ-RL7 application, or AD7383BCPZ-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 dual-channel high-speed sampling ADC selection.
Technical Context
The AD7383BCPZ-RL7 implements two independent successive approximation register (SAR) cores with synchronized sampling on falling edge of CS, enabling true simultaneous acquisition across AINA+/AINA− and AINB+/AINB− pseudo-differential input pairs. It supports both internal 2.5 V reference and external reference up to 3.3 V, with configurable oversampling (OSR up to 8) and resolution boost (RES = 1).
Its SPI-compatible serial interface features dual data outputs (SDOA and SDOB/ALERT), separate VLOGIC supply (1.65 V to 3.6 V), and alert functionality triggered by programmable threshold violation. The device operates at 3.0 V–3.6 V VCC and achieves 107 mW total power dissipation at 4 MSPS with 3.3 V reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees no missing codes and full-scale quantization granularity of 15.3 µV with 3.3 V reference. |
| Throughput Rate | 4 MSPS - enables real-time capture of signals up to 2 MHz Nyquist bandwidth per channel. |
| SNR (typical) | 87.5 dB at 1 kHz, VREF = 3.3 V - supports >14.5 ENOB for precision measurement applications. |
| INL Error (max) | ±2.5 LSB - ensures monotonicity and linearity critical for closed-loop control feedback paths. |
| Channel Isolation | −110 dB - prevents crosstalk between ADC A and ADC B during simultaneous sampling. |
| Oversampling Ratio | Up to OSR = 8 - reduces noise floor by up to 9 dB and relaxes anti-alias filter requirements. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and harsh-environment DAQ. |
Pinout & Package
AD7383BCPZ-RL7 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; must be connected to system ground plane. |
| VLOGIC (Pin 2) | Logic interface supply | Independent 1.65 V–3.6 V rail decoupled with 1 µF capacitor; enables level-shifting for 1.8 V/2.5 V/3.3 V host interfaces. |
| REGCAP (Pin 3) | Internal regulator decoupling | Stabilizes 1.9 V internal LDO output; requires 1 µF capacitor to GND for stable logic supply regulation. |
| VCC (Pin 4) | Analog power supply | Main 3.0 V–3.6 V supply for SAR core and analog front-end; decoupling with 1 µF capacitor minimizes switching noise. |
| AINA+/AINA− (Pins 7, 8) | ADC A pseudo-differential input | AINA− typically biased at VREF/2; AINA+ accepts 0 V to VREF range-reduces common-mode rejection burden on driving amplifier. |
| AINB+/AINB− (Pins 5, 6) | ADC B pseudo-differential input | Identical structure to ADC A; enables matched simultaneous sampling for I/Q or dual-axis sensing. |
| REFIO (Pin 11) | Reference I/O | Provides 2.5 V internal reference output or accepts 2.49 V–3.4 V external reference; requires 1 µF decoupling capacitor. |
| CS (Pin 12) | Chip select / conversion trigger | Active-low signal initiating simultaneous sampling and framing SPI transfers; falling edge triggers acquisition hold. |
| SDOA (Pin 13) | Serial data output A | Primary SPI output delivering ADC A or ADC B results and register reads; supports daisy-chain configurations. |
| SDOB/ALERT (Pin 14) | Dual-function terminal | Configurable as secondary SPI output (SDOB) or active-low interrupt (ALERT) on threshold violation-no external pull-up required. |
| SDI (Pin 15) | Serial data input | Accepts register writes (CONFIGURATION1/2, ALERT thresholds); latched on SCLK falling edge. |
| SCLK (Pin 16) | Serial clock input | Drives SPI timing; supports up to 80 MHz SCLK (12.5 ns period) for low-latency readback of 16-bit results. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous sampling | Guarantees time-aligned acquisition across two channels-essential for phase-sensitive measurements like motor current/voltage vector control. |
| Integrated oversampling block | Improves SNR by up to 5.9 dB (OSR = 4) and 9.9 dB (OSR = 8), reducing post-processing computational load and relaxing analog filter design. |
| Pseudo-differential input architecture | Reduces amplifier drive requirements by lowering input capacitance (5 pF in hold mode) and common-mode voltage swing. |
| Alert function with programmable thresholds | Hardware-level over-range detection eliminates CPU polling; configurable via ALERT_LOW_THRESHOLD and ALERT_HIGH_THRESHOLD registers. |
| Wide temperature operation | Specified performance maintained from −40°C to +125°C-validated for industrial motor drives and automotive power electronics. |
Applications
| Motor Control Position Feedback | Power Quality Monitoring |
|---|---|
|
Use Scenario: Real-time rotor position sensing using dual-resolver or dual-Hall sensor outputs in servo drives. IC Role / Device Role / Timing Role: Simultaneous sampling of sine/cosine resolver signals or complementary Hall waveforms to compute precise angular position without phase skew. Use Value: 2.5 LSB INL and −110 dB channel isolation ensure sub-0.05° angular error; 4 MSPS throughput captures fast transients during commutation. |
Use Scenario: Three-phase voltage and current waveform capture for harmonic analysis and IEEE 519 compliance verification. IC Role / Device Role / Timing Role: Dual-channel synchronized sampling of voltage and current on same phase leg to compute true RMS, THD, and power factor. Use Value: 87.5 dB SNR enables accurate 13th harmonic detection (650 Hz @ 50 Hz fundamental); oversampling improves dynamic range for low-level distortion measurement. |
| Sonar Signal Acquisition | Erbium-Doped Fiber Amplifier (EDFA) Control |
|
Use Scenario: Digitizing echo return signals in ultrasonic distance measurement or underwater sonar systems. IC Role / Device Role / Timing Role: High-speed dual-channel capture of transmit pulse reference and received echo for time-of-flight calculation. Use Value: Aperture jitter of 20 ps and 6 MHz input bandwidth preserve pulse edge fidelity; simultaneous sampling eliminates inter-channel timing skew in differential echo processing. |
Use Scenario: Closed-loop bias current monitoring and pump laser control in optical amplifiers for telecom infrastructure. IC Role / Device Role / Timing Role: Simultaneous sampling of photodiode monitor outputs and thermistor-based temperature feedback for multi-variable PID control. Use Value: −40°C to +125°C rating matches EDFA module thermal envelope; 2.5 V internal reference ensures stable gain calibration across temperature. |
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 |
|---|---|---|---|
| AD7384BCPZ-RL7 | 14-bit resolution, 1.0 LSB INL max, 83.5 dB SNR (VREF = 3.3 V), identical pinout and timing. | Better cost/performance trade-off where 14-bit ENOB suffices-e.g., motor current sense where 12-bit effective resolution meets safety standards. | Select AD7384BCPZ-RL7 when lower resolution is acceptable and system SNR budget allows ≥83 dB. |
| AD7380BCPZ-RL7 | Differential input architecture (not pseudo-differential), 16-bit, 4 MSPS, but lacks oversampling and alert function. | Requires fully differential driver circuitry; unsuitable for single-ended source interfacing without external instrumentation amplifiers. | Choose AD7380BCPZ-RL7 only when differential sensor outputs (e.g., LVDT, strain gauge bridges) are available and oversampling is not required. |
Compared with AD7384BCPZ-RL7, the AD7383BCPZ-RL7 provides higher resolution and SNR at the cost of slightly higher power and INL; versus AD7380BCPZ-RL7, it offers pseudo-differential flexibility and integrated signal conditioning features absent in the differential-only variant.
Availability
AD7383BCPZ-RL7 is available at Aetrix Electronics and suitable for motor control position feedback, power quality monitoring, sonar signal acquisition, and EDFA control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7383BCPZ-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 facilities worldwide.
The AD7383BCPZ-RL7 belongs to Analog Devices' high-speed SAR ADC product line, designed specifically for industrial automation, motor control, and precision data acquisition systems demanding simultaneous dual-channel sampling, wide temperature operation, and integrated signal conditioning.
FAQ
What is the maximum supported external reference voltage for AD7383BCPZ-RL7?
The AD7383BCPZ-RL7 supports an external reference voltage from 2.49 V to 3.4 V on the REFIO pin. When using 3.3 V external reference, typical SNR improves to 87.5 dB at 1 kHz input, and the device maintains full 16-bit performance with ±2.5 LSB INL. Reference selection is controlled via the REFSEL bit in the CONFIGURATION1 register.
Does AD7383BCPZ-RL7 support simultaneous sampling of both channels at 4 MSPS?
Yes, AD7383BCPZ-RL7 performs true simultaneous sampling on both ADC A and ADC B at up to 4 MSPS. The conversion process is triggered by the falling edge of CS, and aperture delay match is specified at 100 ps max, ensuring time-aligned acquisition critical for I/Q demodulation and vector control applications.
How does the oversampling feature affect the effective sampling rate of AD7383BCPZ-RL7?
Oversampling in AD7383BCPZ-RL7 trades raw throughput for improved SNR and reduced noise: at OSR = 4, output data rate drops to 1 MSPS with +3.9 dB SNR gain; at OSR = 8, rate falls to 500 kSPS with +9.9 dB gain. The rolling average mode maintains 4 MSPS output rate while applying digital filtering-verified in Figure 10 of the datasheet.
Can AD7383BCPZ-RL7 operate with a 1.8 V logic interface?
Yes, AD7383BCPZ-RL7 supports 1.8 V logic interfaces via its dedicated VLOGIC supply pin (Pin 2), which accepts 1.65 V to 3.6 V. Digital inputs (CS, SDI, SCLK) recognize 0.2 × VLOGIC as logic low and 0.8 × VLOGIC as logic high-ensuring reliable operation with 1.8 V FPGAs or microcontrollers without level shifters.
What is the purpose of the SDOB/ALERT pin on AD7383BCPZ-RL7?
The SDOB/ALERT pin on AD7383BCPZ-RL7 is multifunctional: configured as SDOB, it outputs ADC B conversion results in parallel with SDOA; configured as ALERT, it asserts low when a conversion result exceeds user-defined thresholds stored in ALERT_LOW_THRESHOLD and ALERT_HIGH_THRESHOLD registers-enabling hardware-triggered fault response without CPU intervention.
AD7383BCPZ-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:
- 16
- 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:
- -
AD7383BCPZ-RL7 FAQ
1.How can I place an order for AD7383BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7383BCPZ-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 AD7383BCPZ-RL7 reliable?
The price and inventory of AD7383BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7383BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7383BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7383BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7383BCPZ-RL7?
AD7383BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7383BCPZ-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 AD7383BCPZ-RL7?
For technical support, including AD7383BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7383BCPZ-RL7 requirements.
6.How does Aetrix verify that AD7383BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7383BCPZ-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 AD7383BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7383BCPZ-RL7?
All AD7383BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7383BCPZ-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 AD7383BCPZ-RL7 part is unused and in its original packaging.
Return procedure for AD7383BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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