Overview
The AD7440BRM-REEL7 is a high-speed, low-power successive approximation (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7440/AD7450A family, which includes 10-bit and 12-bit versions. The AD7440BRM-REEL7 specifically refers to the 10-bit version in a reel package. It operates from a single 3 V or 5 V power supply, making it versatile for various applications. The device features a fully differential analog input, a low noise, wide bandwidth track-and-hold amplifier, and advanced design techniques to achieve low power dissipation at high throughput rates up to 1 MSPS.
Key Specifications
| Parameter | Description |
|---|---|
| Resolution | 10 bits (for AD7440) |
| Conversion Rate | Up to 1 MSPS |
| Power Supply | 3 V (+20%/–10%) or 5 V (±5%) |
| Power Consumption | Typically 4 mW at 3 V supply |
| Input Type | Fully differential analog input |
| Input Frequency Range | Up to 3.5 MHz |
| Reference Voltage Range | 100 mV to 3.5 V |
| Package Type | 8-lead SOT-23 and MSOP packages |
| Power-Down Mode | 1 μA max |
| Interface Compatibility | SPI/QSPI™/MICROWIRE™/DSP compatible |
Key Features
- Fully differential analog input with wide input bandwidth.
- High throughput with low power consumption.
- No pipeline delays due to SAR architecture.
- Low noise, wide bandwidth track-and-hold amplifier.
- Flexible power and serial clock speed management.
- High speed serial interface compatible with SPI/QSPI™/MICROWIRE™/DSP.
- Power-down mode with a maximum current of 1 μA.
- Variable reference 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 AD7440BRM-REEL7?
The AD7440BRM-REEL7 has a resolution of 10 bits.
- What are the possible power supply voltages for this ADC?
The AD7440BRM-REEL7 can operate from a single 3 V (+20%/–10%) or 5 V (±5%) power supply.
- What is the maximum conversion rate of the AD7440BRM-REEL7?
The maximum conversion rate is up to 1 MSPS.
- What type of input does the AD7440BRM-REEL7 have?
The AD7440BRM-REEL7 features a fully differential analog input.
- What is the range of the reference voltage for this ADC?
The reference voltage can be varied from 100 mV to 3.5 V.
- Is the AD7440BRM-REEL7 compatible with SPI interfaces?
- What is the power consumption of the AD7440BRM-REEL7?
Typically, it consumes 4 mW at a 3 V supply.
- What is the power-down mode current of the AD7440BRM-REEL7?
The power-down mode current is 1 μA max.
- What are some common applications of the AD7440BRM-REEL7?
Common applications include transducer interfaces, battery-powered systems, data acquisition systems, portable instrumentation, and motor control systems.
- What package types are available for the AD7440BRM-REEL7?
The AD7440BRM-REEL7 is available in 8-lead SOT-23 and MSOP packages.
