Overview
The AD7440BRTZ-R2 is a high-speed, low-power, successive approximation (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This 10-bit ADC features a fully differential analog input and operates from a single 3 V or 5 V power supply. It is designed to achieve very low power dissipation at throughput rates up to 1 MSPS, making it suitable for a variety of applications requiring high performance and low power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 10-bit | |
| Conversion Rate | 1 MSPS | |
| Conversion Time | 888 ns (with 18 MHz SCLK) | |
| Track-and-Hold Acquisition Time | 200 ns (sine wave input), 290 ns (step input) | |
| Power Supply Range | 2.7 V to 3.6 V, 4.75 V to 5.25 V | V |
| Power Consumption (Normal Mode) | 1.45 mA (VDD = 2.7 V to 3.6 V), 1.95 mA (VDD = 4.75 V to 5.25 V) | mA |
| Power-Down Mode Current | 1 μA max | μA |
| Package Type | 8-lead SOT-23 | |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- Fully differential analog input with wide input bandwidth.
- High throughput rate of up to 1 MSPS with low power consumption.
- No pipeline delays due to SAR architecture.
- Low noise, wide bandwidth differential track-and-hold amplifier.
- Flexible power and serial clock speed management.
- Power-down mode with a maximum current of 1 μA.
- High speed serial interface compatible with SPI/QSPI/MICROWIRE/DSP.
- Variable reference voltage input from 100 mV to 3.5 V.
Applications
- Transducer interface.
- Battery-powered systems.
- Data acquisition systems.
- Portable instrumentation.
- Motor control systems.
Q & A
- What is the resolution of the AD7440BRTZ-R2 ADC?
The AD7440BRTZ-R2 has a resolution of 10 bits. - What is the maximum conversion rate of the AD7440BRTZ-R2?
The maximum conversion rate is up to 1 MSPS. - What are the power supply options for the AD7440BRTZ-R2?
The device operates from a single 3 V or 5 V power supply. - What is the typical power consumption in normal mode?
The typical power consumption is 1.45 mA (VDD = 2.7 V to 3.6 V) and 1.95 mA (VDD = 4.75 V to 5.25 V). - Does the AD7440BRTZ-R2 have pipeline delays?
No, the SAR architecture ensures there are no pipeline delays. - What is the operating temperature range of the AD7440BRTZ-R2?
The operating temperature range is -40°C to +85°C. - What types of interfaces does the AD7440BRTZ-R2 support?
The device supports high speed serial interfaces compatible with SPI/QSPI/MICROWIRE/DSP. - How does the power-down mode work?
The power-down mode reduces the current to a maximum of 1 μA. - What is the package type of the AD7440BRTZ-R2?
The package type is 8-lead SOT-23. - What are some common applications of the AD7440BRTZ-R2?
Common applications include transducer interfaces, battery-powered systems, data acquisition systems, portable instrumentation, and motor control systems.
