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Analog Devices Inc. AD7863ARZ-10
- Part No.:
- AD7863ARZ-10
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD7863ARZ-10.pdf
- Description:
- IC ADC 14BIT SAR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:584
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Product details
Overview
AD7863ARZ-10 from Analog Devices is a dual-channel, simultaneous-sampling 14-bit analog-to-digital converter with ±10 V input range, 5.2 μs conversion time, and single 5 V supply operation. It integrates two track/hold amplifiers, internal 2.5 V reference, and high-speed parallel interface - designed for precision phase-coherent acquisition in motor control, power quality monitoring, and industrial data acquisition systems.
For engineers reviewing the AD7863ARZ-10 datasheet, AD7863ARZ-10 pinout, AD7863ARZ-10 application, or AD7863ARZ-10 equivalent, key selection criteria include simultaneous dual-channel sampling capability, aperture delay matching ≤350 ps, ±10 V overvoltage tolerance (±17 V), 77 dB SNR at 175 kSPS, and lead-compatible upgrade path from AD7862.
Technical Context
The AD7863ARZ-10 implements two independent successive approximation register (SAR) ADCs sharing a common CONVST signal to enforce strict simultaneity. Each channel (A or B) selects two inputs (e.g., VA1/VA2) via A0, enabling synchronized sampling across four analog inputs while preserving inter-channel phase relationships.
Its internal 2.5 V reference drives both ADCs with ±10 mV error at 25°C and 25 ppm/°C drift; analog inputs feature ±17 V absolute maximum rating and 9 kΩ input resistance. Conversion results are output via 14-bit parallel bus (DB0–DB13) with CS/RD handshaking and BUSY status indication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonic transfer function with no missing codes over full temperature range. |
| Conversion Time | 5.2 μs max - enables 175 kSPS sustained throughput per channel with deterministic timing. |
| Analog Input Range | ±10 V - supports industrial sensor outputs (e.g., ±10 V LVDTs, strain gauge bridges) without external scaling. |
| Aperture Delay Matching | ≤350 ps max - ensures <0.02° phase error at 100 kHz between VA1/VA2 or VB1/VB2 for vector control. |
| SNR | 77 dB min (TMIN to TMAX) - delivers >12.5 ENOB for accurate RMS, harmonic, and power factor measurements. |
| Power Dissipation | 94.5 mW max (normal mode) - enables integration into thermally constrained industrial enclosures. |
| Overvoltage Protection | ±17 V on analog inputs - prevents latch-up or damage during transients in motor drive feedback loops. |
Pinout & Package
AD7863ARZ-10 is housed in a 28-lead SOIC_W (Wide) package (body width 7.6 mm), RoHS-compliant, with exposed pad not electrically connected. Pin layout supports compact PCB routing for analog/digital separation and low-noise grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CONVST | Convert Start Input | Falling-edge-triggered global sample command - simultaneously freezes both track/holds and initiates dual-channel conversion. |
| BUSY | Conversion Status Output | Active-high open-drain signal indicating conversion in progress; used to synchronize RD timing without polling. |
| A0 | Multiplexer Select | Static channel selector - low = VA1/VA2 sampled, high = VB1/VB2 sampled; determines read sequence order. |
| VA1, VA2, VB1, VB2 | Analog Inputs | Differential-pair-capable inputs with ±17 V fault tolerance; each pair shares identical gain/offset tracking for matched acquisition. |
| VREF | Reference I/O | 2.5 V buffered output (±10 mV error) and input - allows external reference substitution or system-level reference sharing. |
| DB0–DB13 | Parallel Data Outputs | Three-state TTL outputs delivering twos-complement codes; MSB (DB13) and LSB (DB0) defined for unambiguous bus interfacing. |
| AGND / DGND | Analog & Digital Grounds | Separate ground pins require star-point connection at single point to minimize digital noise coupling into analog front-end. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous Sampling | Two independent track/hold amplifiers triggered by one CONVST edge - preserves phase coherence between channels for vector control and power analysis. |
| Internal 2.5 V Reference | ±10 mV accuracy at 25°C with 25 ppm/°C drift - eliminates need for external reference IC while maintaining ±0.04% full-scale gain stability. |
| High-Speed Parallel Interface | 14-bit bus with CS/RD/BUSY handshaking - interfaces directly to 80C196, MC68000, or ADSP-210x DSPs without glue logic. |
| Overvoltage Protection | ±17 V absolute rating on all analog inputs - withstands inductive kickback in motor current sensing without external clamping diodes. |
| Low Power Operation | 70 mW typical (94.5 mW max) at 175 kSPS - reduces thermal load in multi-channel DAQ modules and portable test equipment. |
Applications
| Motor Control Feedback | Power Quality Monitoring |
|---|---|
Use Scenario: Real-time acquisition of phase currents and DC bus voltage in three-phase inverter drives. IC Role / Device Role / Timing Role: Dual simultaneous sampling of current shunt voltages (VA1/VA2) and bus voltage (VB1/VB2) at precise PWM edges to compute instantaneous torque and flux. Use Value: Aperture delay matching ≤350 ps ensures <0.02° phase error between current and voltage samples - critical for field-oriented control accuracy. |
Use Scenario: Continuous measurement of voltage/current harmonics, THD, and interharmonics in utility substations and industrial feeders. IC Role / Device Role / Timing Role: Synchronized capture of line voltage and neutral current waveforms using VA1/VA2 and VB1/VB2 to compute IEEE 519-compliant metrics. Use Value: 77 dB SNR and −82 dB THD enable detection of 0.05% harmonic distortion components at 175 kSPS sampling rate. |
| Industrial Data Acquisition | Test & Measurement Equipment |
Use Scenario: Multi-sensor monitoring in predictive maintenance systems (vibration, temperature, pressure). IC Role / Device Role / Timing Role: Simultaneous sampling of accelerometer outputs (VA1/VA2) and thermocouple signals (VB1/VB2) to correlate mechanical and thermal anomalies. Use Value: ±10 V input range accepts direct connection to IEPE accelerometers and 4–20 mA loop-powered sensors via precision resistors. |
Use Scenario: Digitizing analog waveforms in portable oscilloscopes and automated test equipment. IC Role / Device Role / Timing Role: High-throughput acquisition engine capturing dual-channel signals with deterministic 5.2 μs latency for trigger-based waveform reconstruction. Use Value: 14-bit resolution + 175 kSPS throughput provides >12.5 ENOB at 100 kHz - sufficient for Class I power analyzer certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7656ASTZ | 6-channel, 16-bit SAR ADC; 3.5 μs conversion; requires external reference; no integrated track/hold. | Higher resolution but lacks on-chip track/hold - needs external amplifiers for simultaneous sampling of >2 channels. | Choose when 16-bit resolution and 6-channel count outweigh added BOM cost and layout complexity. |
| ADS8556IPM | 6-channel, 16-bit SAR ADC; 1.25 μs conversion; integrated track/hold; ±10 V input; SPI interface only. | Superior speed and channel count, but serial interface increases CPU overhead and limits real-time determinism vs. parallel BUSY/CS/RD. | Prefer for space-constrained designs where SPI compatibility and 1.25 μs latency justify trade-off in interface flexibility. |
Compared with AD7863ARZ-10, AD7656ASTZ offers higher resolution but requires external signal conditioning for true simultaneity across all six channels, while ADS8556IPM delivers faster conversion and more channels but sacrifices parallel interface determinism - making AD7863ARZ-10 optimal for cost-sensitive, phase-critical dual-channel industrial control.
Availability
AD7863ARZ-10 is available at Aetrix Electronics and suitable for motor control feedback, power quality monitoring, and industrial data acquisition requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7863ARZ-10 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.
The AD7863 belongs to Analog Devices' precision data acquisition portfolio, engineered specifically for applications demanding phase-coherent, high-speed dual-channel sampling in harsh industrial environments.
FAQ
What is the maximum sampling rate supported by the AD7863ARZ-10?
The AD7863ARZ-10 achieves a sustained throughput of 175 kSPS per channel in Mode 1 operation. This is enabled by its 5.2 μs conversion time and 0.5 μs track/hold acquisition time, allowing back-to-back conversions without dead time. The device maintains full 14-bit accuracy and 77 dB SNR at this rate, as verified in the Rev. B datasheet Table 1 under Dynamic Performance.
Does the AD7863ARZ-10 require an external reference voltage?
No, the AD7863ARZ-10 includes an internal 2.5 V reference with ±10 mV accuracy at 25°C and 25 ppm/°C temperature coefficient. The VREF pin serves as both output and input - it can be used directly or replaced with an external reference for tighter tolerance. The internal reference is fully specified for ±10 V full-scale operation in the AD7863ARZ-10 variant.
How does the AD7863ARZ-10 handle simultaneous sampling across two channels?
The AD7863ARZ-10 uses a single CONVST falling edge to place both on-chip track/hold amplifiers into hold mode simultaneously, then initiates conversion on both selected channels (VA1/VA2 or VB1/VB2) in parallel. Aperture delay matching is guaranteed ≤350 ps, ensuring phase coherence preservation - a requirement explicitly validated for vector motor control and power metering applications in the datasheet's Product Highlights.
What is the overvoltage protection rating for the AD7863ARZ-10 analog inputs?
The AD7863ARZ-10 analog inputs (VA1, VA2, VB1, VB2) are rated for ±17 V absolute maximum voltage relative to AGND, as stated in Table 3 (Absolute Maximum Ratings). This exceeds the ±10 V full-scale range and protects against transients in industrial environments such as motor drive current sensing or relay contact bounce.
Is the AD7863ARZ-10 pin-compatible with earlier Analog Devices ADCs?
Yes, the AD7863ARZ-10 is a 14-bit lead-compatible upgrade to the AD7862, sharing identical pinout, package (28-lead SOIC_W), and parallel interface protocol. Functional improvements include faster conversion (5.2 μs vs. 6.5 μs), improved SNR (77 dB vs. 74 dB), and tighter aperture delay matching - all documented in the Rev. B datasheet General Description and Product Highlights sections.
AD7863ARZ-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 175k
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7863ARZ-10 FAQ
1.How can I place an order for AD7863ARZ-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7863ARZ-10 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 AD7863ARZ-10 reliable?
The price and inventory of AD7863ARZ-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7863ARZ-10 is usually 5 days.
3.What payment methods are accepted for AD7863ARZ-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7863ARZ-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7863ARZ-10?
AD7863ARZ-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7863ARZ-10 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 AD7863ARZ-10?
For technical support, including AD7863ARZ-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7863ARZ-10 requirements.
6.How does Aetrix verify that AD7863ARZ-10 is sourced from the original manufacturer or authorized distributors?
All AD7863ARZ-10 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 AD7863ARZ-10 meets industry standards.
7.What is the process for return or replacement of AD7863ARZ-10?
All AD7863ARZ-10 units undergo pre-shipment inspection (PSI). If there is an issue with AD7863ARZ-10, 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 AD7863ARZ-10 part is unused and in its original packaging.
Return procedure for AD7863ARZ-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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