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AD7890ARZ-10
AD7890ARZ-10
| Part Number | AD7890ARZ-10 |
|---|---|
| Manufacturer | Analog Devices Inc. (ADI) |
| Category | Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC) |
| Description | 8-channel 12-bit serial data acquisition ADC, ±10V bipolar input, built-in track-and-hold & 2.5V reference, 24-lead SOIC package |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The AD7890ARZ-10 is an 8-channel 12-bit data acquisition IC from ADI. It integrates multiplexer, track-and-hold, SAR ADC and 2.5V internal reference on one chip. It supports ±10V industrial analog input with ±17V overvoltage protection, runs on single 5V supply, and features SPI-compatible serial interface. Packaged in 24-lead SOIC, it fits industrial control, instrument and data logging equipment.
Core Advantages
All-in-one Acquisition Circuit
Integrates full signal processing modules to cut component count, PCB area and layout difficulty.
Direct ±10V Industrial Input
Natively supports standard ±10V industrial signals without extra op-amp level shifting circuits.
Built-in Overvoltage Protection
Each channel withstands ±17V surge voltage without interfering other channel conversion accuracy.
Compact Serial Communication
Compatible with SPI, QSPI and DSP interfaces, saving MCU pins and supporting optocoupler isolation design.
Key Specifications
| Brand | Analog Devices Inc. (ADI) Multiplexed DAS Series |
|---|---|
| Model Number | AD7890ARZ-10 |
| RoHS Status | RoHS Compliant / Lead-Free / Green SOIC (“Z” suffix) |
| EDA/CAD Model | 3D CAD Models, Schematic Symbols, and PCB footprints available upon technical request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | 24-SOIC (300mil) |
| Mounting Type | Surface Mount |
| Surface Marking / Silkscreen | AD7890ARZ-10 Marking |
| Resolution | 12-Bit Resolution (No Missing Codes Guaranteed) |
| Number of Input Channels | 8 Single-Ended Analog Inputs |
| Analog Input Range | ±10V Bipolar Input Configuration |
| ADC Architecture | Successive Approximation Register (SAR) |
| Throughput Rate | Up to 117 kSPS (Samples Per Second) |
| Internal Reference Voltage | On-chip 2.5V Reference (with external decoupling support) |
| Operating Supply Voltage (VDD) | +5V ± 5% Single Supply Operation |
| Max Power Dissipation | Typically 50 mW (Standby Power Mode: 75 μW Max) |
| Operating Temperature Range | -40°C to +85°C Industrial Operating Grade |
| Digital Interface | SPI / QSPI / DSP Compatible Serial Interface |
| Typical Conversion Time | 5.9μs single channel conversion cycle |
| Input Overvoltage Protection | ±17V overvoltage withstand for all analog input channels |
| Packaging Option | Tube / Tape & Reel (REEL suffix) available |
| Digi-Key Stock Package | Tube packing, minimum order 1 unit |
Typical Applications
- Industrial Process Control Modules, Distributed Control Systems (DCS), and PLC Analog Input Cards
- Multichannel Data Acquisition Systems and High-Density Sensor Transducers
- Motor Control Feedback Loops, Servo Systems, and Robotic Joint Position Tracking
- Environmental Data Logging, Remote Telemetry Units (RTUs), and Power Monitoring Subsystems
- Aviation Instrumentation, Marine Subsystem Interfaces, and Field Calibration Equipment
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
Submit datasheet requests, sample orders, stock & bulk price inquiries via Quick Inquiry. We reply within 24 hours.
Frequently Asked Questions
Q1: What’s the difference between AD7890ARZ-10, AD7890-4 and AD7890-2?
A1: Only analog input range differs. AD7890ARZ-10 supports ±10V bipolar industrial signals; AD7890-2 is 0~2.5V unipolar; AD7890-4 is 0~4V unipolar. All share identical ADC core, 8-channel mux and serial interface.
Q2: How does the on-chip overvoltage protection work?
A2: Each input has clamping diodes and resistors. It safely clamps surge voltage up to ±17V, avoids chip damage and ensures other channels’ conversion accuracy.
Q3: Can I use an external reference instead of the built-in 2.5V?
A3: Yes. Connect external precision reference to REF pin to disable internal source, ideal for multi-ADC systems to reduce drift error.
Q4: What PCB grounding methods guarantee 12-bit noise-free performance?
A4: Separate analog/digital grounds and converge at a single star ground under the chip. Place 0.1μF & 10μF decoupling capacitors near power pins, and keep serial lines away from analog traces.
Q5: What’s the supply power consumption of AD7890ARZ-10?
A5: Max operating power is 50mW (30mW typical); standby mode power 75μW typical for low-power scenarios.
Q6: Are tape & reel packaging versions available for mass production?
A6: Yes, AD7890ARZ-10REEL tape & reel stock is supplied for automated SMT assembly.
Q7: What’s the maximum sampling rate of this ADC chip?
A7: The device supports a throughput rate up to 117 kSPS with a 5.9μs single-channel conversion cycle.
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