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Analog Devices Inc. AD7862ARZ-10REEL
- Part No.:
- AD7862ARZ-10REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD7862ARZ-10REEL.pdf
- Description:
- IC ADC 12BIT SAR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,564
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Product details
Overview
AD7862ARZ-10REEL from Analog Devices is a dual-channel, simultaneous-sampling 12-bit analog-to-digital converter (ADC) with ±10 V input range, 250 kSPS throughput, 3.6 µs conversion time, and integrated +2.5 V reference - designed for phase-critical acquisition in AC motor control and uninterruptible power supplies.
For engineers reviewing the AD7862ARZ-10REEL datasheet, AD7862ARZ-10REEL pinout, AD7862ARZ-10REEL application, or AD7862ARZ-10REEL equivalent, this page delivers verified specifications, validated pin functions, confirmed timing behavior, real-world use cases, and two technically documented alternative parts for industrial signal acquisition systems.
Technical Context
The AD7862ARZ-10REEL integrates two independent successive-approximation ADCs, each paired with a track-and-hold amplifier, enabling true simultaneous sampling across four analog inputs (VA1/VA2/VB1/VB2) grouped into two channels. Its internal laser-trimmed clock eliminates external timing components.
Conversion is triggered by a single CONVST falling edge, placing both track/holds into hold mode simultaneously; BUSY remains high for 3.6 µs before data becomes available on the 12-bit parallel bus. The device uses twos-complement coding and supports multiplexed readout via A0, CS, and RD signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees no missing codes and supports 4096 distinct digital output levels. |
| Sampling Rate | 250 kSPS - enables real-time capture of signals up to 125 kHz without aliasing per Nyquist criterion. |
| Analog Input Range | ±10 V - matches standard industrial sensor and transducer outputs without external scaling. |
| Conversion Time | 3.6 µs - determines minimum inter-conversion interval and maximum sustained throughput. |
| SNR (fIN = 100 kHz) | 70 dB min - ensures >11.6 effective bits of dynamic resolution for clean signal digitization. |
| Aperture Delay Matching | 200 ps typ - preserves sub-degree phase alignment between channel A and B for vector measurements. |
| Power Dissipation | 60 mW typ at +5 V - enables integration into thermally constrained embedded controllers. |
Pinout & Package
AD7862ARZ-10REEL is housed in a 28-lead SOIC (Small Outline Integrated Circuit) package with gull-wing leads, RoHS-compliant finish, and tape-and-reel packaging (REEL designation). Pin 1 is marked by a beveled corner or dot; pins 1 and 28 are NC (no connect).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CONVST (Pin 8) | Conversion Start Input | Falling-edge-triggered control that synchronously freezes both track/holds and initiates dual-channel conversion. |
| BUSY (Pin 23) | Conversion Status Output | Active-high open-drain signal indicating conversion in progress; goes low when results are latched and ready. |
| A0 (Pin 20) | Multiplexer Channel Select | Configures read sequence: A0 low → VA1/VB1 first; A0 high → VA2/VB2 second - enables interleaved dual-channel access. |
| CS (Pin 21) & RD (Pin 22) | Parallel Interface Controls | Standard TTL-compatible chip select and read strobe signals for microprocessor/DSP bus interfacing without glue logic. |
| VREF (Pin 19) | Reference I/O | Provides access to internal +2.5 V reference (±10 mV @ 25°C); accepts external precision references for improved gain accuracy. |
| VA1–VB2 (Pins 17,18,25,26) | Analog Inputs | Four buffered, overvoltage-protected inputs (±17 V survival) supporting simultaneous sampling of two differential or single-ended pairs. |
| DB0–DB11 (Pins 2–9,11–15) | 12-Bit Parallel Data Bus | Three-state TTL outputs delivering twos-complement codes; compatible with 5 V logic families and standard address/data buses. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous Sampling Architecture | Preserves phase coherence between channel A and B inputs - essential for vector control and power quality analysis. |
| Integrated +2.5 V Reference | Eliminates need for external reference IC; ±25 mV max error over –40°C to +85°C enables stable gain calibration. |
| Overvoltage Protection | Withstands ±17 V on analog inputs without damage - protects against transients in industrial motor drive environments. |
| Auto Sleep Power Mode | Reduces idle current to 25 µA and power dissipation to 75 µW - extends battery life in portable DAQ systems. |
| Channel-to-Channel Isolation | –80 dB min at 100 kHz - prevents crosstalk-induced measurement errors when monitoring adjacent high-voltage phases. |
Applications
| AC Motor Control | Uninterruptible Power Supply (UPS) |
|---|---|
Use Scenario: Real-time acquisition of three-phase voltage and current waveforms for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: Dual-channel simultaneous sampling ADC capturing VA1/VB1 (phase A voltage/current) and VA2/VB2 (phase B voltage/current) with matched aperture delay. Use Value: Enables precise rotor position estimation and torque ripple minimization via sub-200 ps inter-channel timing alignment. |
Use Scenario: Monitoring input AC line voltage, battery DC bus, and inverter output during grid failure and switchover events. IC Role / Device Role / Timing Role: Simultaneous digitization of AC mains and DC link voltages to detect zero-crossing and validate transfer timing within 10 ms. Use Value: Guarantees synchronized sampling across domains to prevent false islanding detection and ensure seamless transfer. |
| Data Acquisition Systems | Industrial Communications Interfaces |
Use Scenario: High-fidelity vibration and temperature monitoring in predictive maintenance gateways for rotating machinery. IC Role / Device Role / Timing Role: Dual 12-bit ADC acquiring analog sensor outputs (accelerometer + thermocouple) with 70 dB SNR and no missing codes. Use Value: Supports FFT-based spectral analysis up to 125 kHz with sufficient ENOB for bearing fault signature detection. |
Use Scenario: Signal conditioning front-end for PROFIBUS DP or Modbus RTU slave nodes requiring analog feedback from actuators. IC Role / Device Role / Timing Role: Low-latency ADC interfaced directly to microcontroller parallel bus for deterministic response to master polling cycles. Use Value: Delivers 3.6 µs conversion + minimal bus turnaround, meeting <100 µs cycle time requirements for Class 1 slaves. |
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 |
|---|---|---|---|
| AD7863ARZ-10 | 14-bit resolution, same pinout and timing; higher SNR (74 dB), larger code space (16384 levels), identical ±10 V input range. | Required where higher dynamic range is needed for low-amplitude harmonics in power quality analyzers. | Select AD7863ARZ-10 when 14-bit resolution is mandatory and PCB layout reuse is prioritized. |
| ADS8364IPAG | 6-channel simultaneous sampling, 16-bit resolution, SPI interface, no internal reference; requires external REF5025. | Suitable for multi-sensor systems needing >2 channels or higher precision, but demands additional reference and level-shifting circuitry. | Choose ADS8364IPAG only when expanding beyond dual-channel capability or requiring SPI compatibility with existing firmware stacks. |
Compared with AD7862ARZ-10REEL, AD7863ARZ-10 offers direct upgrade path with identical footprint and timing while doubling resolution; ADS8364IPAG trades pin compatibility for channel count and resolution but introduces interface and reference design complexity.
Availability
AD7862ARZ-10REEL is available at Aetrix Electronics and suitable for AC motor control, uninterruptible power supplies, and industrial data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7862ARZ-10REEL 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, founded in 1965 and headquartered in Wilmington, MA.
The AD7862ARZ-10REEL belongs to Analog Devices' precision data acquisition product line, engineered specifically for industrial automation and energy systems demanding simultaneous, phase-coherent analog sampling with robust overvoltage tolerance.
FAQ
What is the absolute maximum analog input voltage for AD7862ARZ-10REEL?
The AD7862ARZ-10REEL supports ±17 V on its analog inputs (VA1, VA2, VB1, VB2) without damage, exceeding its specified ±10 V operating range. This overvoltage protection allows safe operation during transient surges common in motor drive and power supply monitoring applications. The internal protection circuitry clamps input currents to non-destructive levels, preserving functionality even after exposure to brief ±17 V events.
Does AD7862ARZ-10REEL require an external reference?
No, AD7862ARZ-10REEL includes an internal +2.5 V reference with ±10 mV accuracy at +25°C and ±25 mV over –40°C to +85°C. It can operate fully standalone using this reference, connected to VREF pin with a 0.1 µF ceramic capacitor to AGND. An external reference may be used for tighter tolerance, but is not required for baseline operation of AD7862ARZ-10REEL.
How does the A0 pin control data readout sequencing in AD7862ARZ-10REEL?
In AD7862ARZ-10REEL, the A0 pin selects which pair of conversion results is accessed first: when A0 is low during CS and RD assertion, the first read returns VA1 or VB1; when A0 is high, the first read returns VA2 or VB2. This enables flexible interleaving of channel A and B data without reconfiguring hardware, maintaining deterministic timing for real-time control loops.
What is the significance of aperture delay matching in AD7862ARZ-10REEL?
AD7862ARZ-10REEL specifies 200 ps typical aperture delay matching between its two track/hold amplifiers. This tight matching ensures phase information between sampled signals on channel A and B remains preserved to within ~0.007° at 100 kHz - critical for accurate vector calculations in motor control and power metering where relative timing directly impacts computed torque or apparent power.
Can AD7862ARZ-10REEL operate from a single +5 V supply?
Yes, AD7862ARZ-10REEL operates exclusively from a single +5 V ±5% supply (VDD pin), powering both analog and digital sections. It draws 15 mA max in normal mode and consumes 60 mW typical - eliminating need for dual-rail supplies and simplifying power architecture in compact industrial controllers where AD7862ARZ-10REEL is deployed.
AD7862ARZ-10REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 250k
- 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:
- -
AD7862ARZ-10REEL FAQ
1.How can I place an order for AD7862ARZ-10REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7862ARZ-10REEL 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 AD7862ARZ-10REEL reliable?
The price and inventory of AD7862ARZ-10REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7862ARZ-10REEL is usually 5 days.
3.What payment methods are accepted for AD7862ARZ-10REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7862ARZ-10REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7862ARZ-10REEL?
AD7862ARZ-10REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7862ARZ-10REEL 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 AD7862ARZ-10REEL?
For technical support, including AD7862ARZ-10REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7862ARZ-10REEL requirements.
6.How does Aetrix verify that AD7862ARZ-10REEL is sourced from the original manufacturer or authorized distributors?
All AD7862ARZ-10REEL 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 AD7862ARZ-10REEL meets industry standards.
7.What is the process for return or replacement of AD7862ARZ-10REEL?
All AD7862ARZ-10REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7862ARZ-10REEL, 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 AD7862ARZ-10REEL part is unused and in its original packaging.
Return procedure for AD7862ARZ-10REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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