AD7893BR-10 is a analog-to-digital converter (ADC) developed by Analog Devices.
Specifications
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ADI
Product Number:
AD7893BR-10
Description:
12 Bit Analog To Digital Converter 1 Input 1 SAR 8-SOIC
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Analog Devices AD7893BR-10 ADC
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Introduction
AD7893BR-10 Analog-to-Digital Converter (ADC)
The AD7893BR-10 is a high-performance, low-power 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) developed by Analog Devices. Designed for precision signal conversion in industrial, instrumentation, and embedded systems, it offers an optimal balance of accuracy, speed, and energy efficiency. The "BR-10" suffix indicates a 10 µs maximum conversion time and wide operating temperature range, making it ideal for dynamic and harsh-environment applications.
Core Features
Conversion Performance
- Resolution: 12-bit (4096 discrete output codes) for precise digitization with minimal quantization error
- Conversion Speed: Maximum 10 µs (typical: 8 µs) for real-time sampling of dynamic signals
- Accuracy Specifications:
- Integral Nonlinearity (INL): ±1 LSB (max) at 25°C
- Differential Nonlinearity (DNL): ±0.5 LSB (max)
- Offset Error: ±2 LSB (max) with on-chip calibration
- Gain Error: ±2 LSB (max)
- Input Range: Single-ended, unipolar analog input with flexible range (configurable via external reference voltage)
Reference and Power Management
- External Reference Input (V_REF): Accepts 2.5 V to 5.5 V for full-scale input range definition
- Power Supply:
- Analog Supply (V_ANA): 2.7 V to 5.5 V
- Digital Supply (V_DIG): 2.7 V to 5.5 V
- Low Power Consumption:
- Active Mode: 1.8 mW typical at 5 V supply
- Power-Down Mode: 0.1 µW typical
Interface and Control
- Serial Interface: 3-wire SPI (SCLK, CS, SDO) for easy MCU/DSP/FPGA integration
- Control Logic: Chip Select (CS) triggered conversion with simultaneous data readout
- Output Format: Straight binary (MSB first) for easy digital system alignment
Operating Conditions and Reliability
- Temperature Range: Industrial grade (-40°C to +85°C)
- Noise Performance: 15 µV rms input-referred noise (typical)
- Package: 8-lead SOIC for compact PCB assembly
Typical Applications
| Application Field | Specific Use Cases |
|---|---|
| Industrial Automation | Process control, data acquisition systems, motor control |
| Instrumentation | Test and measurement equipment, calibration tools, scientific instruments |
| Embedded Systems | Battery-powered devices, IoT sensor nodes, automotive electronics |
| Medical Devices | Portable medical equipment, diagnostic tools |
| Consumer Electronics | Audio equipment, smart home sensors |
Key Advantages
- Balanced Performance: Combines 12-bit precision with 10 µs speed
- Low Power: Ultra-low consumption in active and power-down modes
- Easy Integration: Simple 3-wire SPI interface with minimal external components
- Industrial Ruggedness: Wide temperature range for harsh environments
- Cost-Effective: High precision at competitive price point
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