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Analog Devices Inc. AD7862ANZ-10
- Part No.:
- AD7862ANZ-10
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-DIP (0.600", 15.24mm)
- Datasheet:
-
AD7862ANZ-10.pdf
- Description:
- IC ADC 12BIT SAR 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,263
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Product details
Overview
AD7862ANZ-10 from Analog Devices is a dual 12-bit simultaneous-sampling analog-to-digital converter (ADC) with four analog inputs grouped into two synchronized channels (A and B), ±10 V input range, 3.6 µs conversion time, and integrated +2.5 V reference. It preserves phase coherence between channel pairs and is used in AC motor control systems requiring precise current/voltage sampling.
For engineers reviewing the AD7862ANZ-10 datasheet, AD7862ANZ-10 pinout, AD7862ANZ-10 application, or AD7862ANZ-10 equivalent, this page delivers verified technical context, real-world timing behavior, confirmed DC/dynamic performance specs, package-specific pin mapping, and validated alternative options for industrial data acquisition and motor control designs.
Technical Context
The AD7862ANZ-10 integrates two independent 4 µs successive approximation ADCs, each paired with a track-and-hold amplifier, enabling true simultaneous sampling of VA1/VA2 or VB1/VB2 on falling edge of CONVST. Aperture delay matching is 200 ps typ, ensuring sub-degree phase alignment between channels.
It operates from a single +5 V supply (±5%), uses internal +2.5 V reference (±10 mV @ +25°C, 25 ppm/°C), and supports high-speed parallel readout via 12-bit TTL-compatible bus with CS/RD/A0 control logic. Conversion throughput is 250 kSPS with 4 µs total cycle time including acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees no missing codes across full ±10 V range |
| Conversion Time | 3.6 µs max - enables 250 kSPS sustained throughput per channel |
| Analog Input Range | ±10 V - compatible with industrial sensor outputs and motor phase signals |
| Relative Accuracy | ±1 LSB max - ensures endpoint linearity within 0.024% FSR error |
| Signal-to-(Noise+Distortion) | 70 dB min @ 100 kHz - supports clean spectral analysis in motor current harmonics |
| Channel Isolation | –80 dB max - prevents crosstalk between phase A and phase B measurements |
| Power Dissipation | 60 mW typ - enables thermally constrained embedded controller integration |
Pinout & Package
AD7862ANZ-10 is housed in a 28-pin plastic DIP (N-28) package with dual in-line through-hole mounting and 0.3-inch body width. Pin 1 is NC; pins 16 and 27 are AGND; pin 7 is DGND; pin 24 is VDD (+5 V); and pins 25/18/26/17 carry analog inputs VA1/VA2/VB1/VB2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28 | No Connect | Unused pads - must remain unconnected to avoid parasitic coupling |
| 2–6, 9–15 | DB11–DB0 | 12-bit three-state TTL data bus - outputs twos-complement code for ±10 V range |
| 7 | DGND | Digital ground reference - separate from AGND to minimize digital noise injection |
| 8 | CONVST | Active-low conversion trigger - falling edge initiates simultaneous hold/conversion on both channels |
| 16, 27 | AGND | Analog ground - common return for mux, track/hold, reference, and analog inputs |
| 17, 18, 25, 26 | VB2, VA2, VA1, VB1 | Four analog inputs - grouped as Channel A (VA1/VA2) and Channel B (VB1/VB2) |
| 19 | VREF | Reference I/O - supplies or accepts +2.5 V reference; internal buffer with 2 kΩ series impedance |
| 20 | A0 | Multiplexer select - controls read sequence: low = VA1/VB1 first, high = VA2/VB2 second |
| 21 | CS | Chip select - active-low enable for parallel interface; required with RD to gate data output |
| 22 | RD | Read strobe - active-low signal that latches DB11–DB0 onto bus after conversion completion |
| 23 | BUSY | Open-drain status indicator - high during conversion, falls at completion to signal data readiness |
| 24 | VDD | +5 V supply - powers analog and digital sections; requires local 0.1 µF ceramic decoupling to AGND |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous sampling & conversion | Preserves phase relationship between VA1/VA2 and VB1/VB2 - critical for vector-controlled motor drives |
| Aperture delay matching | 200 ps typ - enables <0.01° phase error at 10 kHz input, supporting high-fidelity current reconstruction |
| Overvoltage protection | ±17 V on analog inputs - withstands transient surges in industrial power electronics without damage |
| Internal +2.5 V reference | ±10 mV error @ +25°C, 25 ppm/°C drift - eliminates external reference component while meeting ±1 LSB linearity |
| Low-power operation | 60 mW typ normal mode, 75 µW standby - suitable for battery-backed or energy-conscious DAQ modules |
Applications
| AC Motor Control | Uninterruptible Power Supply (UPS) |
|---|---|
Use Scenario: Real-time sampling of three-phase motor currents and DC bus voltage for field-oriented control (FOC). IC Role / Device Role / Timing Role: Dual-channel simultaneous ADC captures phase A/B currents with matched aperture delay to compute accurate rotor flux angle. Use Value: Enables <0.01° phase alignment between current samples, directly improving torque ripple suppression and efficiency in servo drives. |
Use Scenario: Monitoring input AC line voltage, battery voltage, and inverter output waveform during transfer switching. IC Role / Device Role / Timing Role: Synchronized sampling of line and load voltages preserves zero-crossing timing integrity for seamless switchover detection. Use Value: Eliminates timing skew-induced false zero-crossing errors, reducing transfer delay jitter below 100 ns in critical UPS control loops. |
| Data Acquisition Systems | Industrial Communications Interface |
Use Scenario: High-channel-count modular DAQ for vibration monitoring in rotating machinery using multiple AD7862ANZ-10 units. IC Role / Device Role / Timing Role: Each AD7862ANZ-10 handles two sensor channels (e.g., accelerometer + temperature) with deterministic 3.6 µs latency. Use Value: Supports synchronized multi-board sampling via shared CONVST, enabling coherent FFT analysis across >16 channels without timestamp interpolation. |
Use Scenario: Front-end digitization in protocol-converter gateways bridging analog field sensors to Modbus TCP or EtherCAT networks. IC Role / Device Role / Timing Role: ADC provides isolated ±10 V input conditioning and fast parallel readout to microcontroller's external memory bus. Use Value: Parallel interface reduces CPU overhead vs. SPI/I²C alternatives, freeing MCU cycles for real-time protocol stack execution. |
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, identical timing and interface; higher SNR (74 dB), lower THD (–85 dB) | Requires higher-resolution signal chain components (e.g., precision op-amps, low-noise references); larger code space handling in firmware | Select when system-level accuracy demands >12-bit ENOB and phase-coherent oversampling is needed. |
| ADS8364IPAG | 6-channel simultaneous sampling, 16-bit, SPI interface, no internal reference; consumes 110 mW | Requires external reference and level-shifting for ±10 V inputs; incompatible parallel bus - necessitates firmware rewrite | Choose for higher channel density and resolution where SPI-based microcontroller integration is preferred over parallel bus. |
Compared with AD7862ANZ-10, AD7863ARZ-10 delivers 2-bit higher resolution with identical footprint and timing, while ADS8364IPAG trades parallel simplicity for 6-channel capability and 16-bit depth at the cost of interface redesign and increased power.
Availability
AD7862ANZ-10 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 obsolescence management, and traceable sourcing.
Supply support for AD7862ANZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The AD7862 product line was designed specifically for industrial and motor control applications demanding simultaneous dual-channel sampling with guaranteed phase coherence and robust ±10 V input tolerance.
FAQ
What is the maximum sampling rate supported by the AD7862ANZ-10?
The AD7862ANZ-10 achieves a sustained throughput rate of 250 kSPS per channel. This is enabled by its 3.6 µs conversion time and 0.3 µs track/hold acquisition time, allowing consecutive conversions with no dead time when properly timed. The part's timing specifications require that reads occur only after BUSY falls and that the next CONVST pulse be delayed by ≥300 ns after the prior read completes.
Does the AD7862ANZ-10 require an external reference voltage?
No, the AD7862ANZ-10 includes an internal +2.5 V reference with ±10 mV accuracy at +25°C and 25 ppm/°C temperature coefficient. For most industrial applications, this internal reference meets the ±1 LSB relative accuracy specification. An external reference may be connected to the VREF pin if tighter initial tolerance or lower drift is required, but the AD7862ANZ-10 functions fully with the internal reference enabled.
How does the AD7862ANZ-10 handle simultaneous sampling of two analog channels?
The AD7862ANZ-10 uses two independent track-and-hold amplifiers triggered simultaneously on the falling edge of CONVST. Both amplifiers capture their respective inputs (e.g., VA1 and VA2) at precisely matched times - aperture delay matching is specified at 200 ps typ. This preserves phase relationships between sampled signals, making the AD7862ANZ-10 suitable for vector control and power quality analysis where inter-channel timing integrity is essential.
What are the absolute maximum ratings for analog input voltage on the AD7862ANZ-10?
The AD7862ANZ-10 supports ±17 V on all analog inputs (VA1, VA2, VB1, VB2) with respect to AGND, even when unpowered. This overvoltage protection allows safe operation during fault conditions such as inverter shoot-through or sensor disconnection in motor drive applications. Operation beyond ±10 V is permissible only for transient events - continuous input must remain within the specified ±10 V range to maintain accuracy and avoid long-term reliability degradation.
Can the AD7862ANZ-10 be used in battery-powered portable equipment?
Yes, the AD7862ANZ-10 supports automatic power-down mode, reducing standby current to 25 µA and power dissipation to 75 µW. In normal operation, it draws 15 mA at +5 V (60 mW typ), which is compatible with regulated battery supplies in portable DAQ or handheld test equipment. Its single +5 V supply simplifies power architecture versus dual-supply ADCs, and the DIP package facilitates prototyping and low-volume assembly.
AD7862ANZ-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- 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-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD7862ANZ-10 FAQ
1.How can I place an order for AD7862ANZ-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7862ANZ-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 AD7862ANZ-10 reliable?
The price and inventory of AD7862ANZ-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7862ANZ-10 is usually 5 days.
3.What payment methods are accepted for AD7862ANZ-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7862ANZ-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7862ANZ-10?
AD7862ANZ-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7862ANZ-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 AD7862ANZ-10?
For technical support, including AD7862ANZ-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7862ANZ-10 requirements.
6.How does Aetrix verify that AD7862ANZ-10 is sourced from the original manufacturer or authorized distributors?
All AD7862ANZ-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 AD7862ANZ-10 meets industry standards.
7.What is the process for return or replacement of AD7862ANZ-10?
All AD7862ANZ-10 units undergo pre-shipment inspection (PSI). If there is an issue with AD7862ANZ-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 AD7862ANZ-10 part is unused and in its original packaging.
Return procedure for AD7862ANZ-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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