Overview
The AD7450BRM, produced by Analog Devices Inc., is a 12-bit, high-speed, low-power successive approximation (SAR) analog-to-digital converter (ADC). This component features a fully differential analog input and operates from a single 3 V or 5 V power supply. It is designed for high throughput rates, achieving up to 833 kSPS with a 3 V supply and up to 1 MSPS with a 5 V supply. The AD7450BRM is housed in an 8-lead SOIC or MSOP package, making it suitable for a variety of applications requiring high performance and low power consumption.
Key Specifications
| Parameter | Conditions/Comments | Unit | Value |
|---|---|---|---|
| Resolution | Bits | 12 | |
| Throughput Rate | VDD = 3 V | kSPS | 833 |
| Throughput Rate | VDD = 5 V | kSPS | 1000 |
| Signal-to-(Noise + Distortion) Ratio (SINAD) | VDD = 5 V | dB | 70 (min) |
| Signal-to-(Noise + Distortion) Ratio (SINAD) | VDD = 3 V | dB | 68 (min) |
| Total Harmonic Distortion (THD) | VDD = 5 V | dB | -80 (typ), -75 (max) |
| Total Harmonic Distortion (THD) | VDD = 3 V | dB | -78 (typ), -73 (max) |
| Power Supply | V | 3 or 5 | |
| Power Consumption | VDD = 3 V, 833 kSPS | mW | 3.75 (max) |
| Reference Voltage Range | mV | 100 to 3500 | |
| Package Type | 8-lead SOIC or MSOP |
Key Features
- Fully differential analog input with wide input bandwidth.
- High throughput rates with low power consumption.
- Flexible power and serial clock speed management, allowing power reduction at lower throughput rates.
- Variable voltage reference input from 100 mV to 3.5 V.
- No pipeline delays due to SAR architecture.
- Accurate control of the sampling instant via the CS input.
- High-speed serial interface compatible with SPI/QSPI/MICROWIRE/DSP.
- Power-down mode with a maximum current of 1 μA.
Applications
- Transducer interfaces.
- Battery-powered systems.
- Data acquisition systems.
- Portable instrumentation.
- Motor control systems.
- Communications systems.
Q & A
- What is the resolution of the AD7450BRM ADC?
The AD7450BRM has a resolution of 12 bits.
- What are the possible throughput rates of the AD7450BRM?
The AD7450BRM can achieve throughput rates of up to 833 kSPS with a 3 V supply and up to 1 MSPS with a 5 V supply.
- What is the power consumption of the AD7450BRM at 833 kSPS with a 3 V supply?
The power consumption is 3.75 mW maximum at 833 kSPS with a 3 V supply.
- What is the range of the reference voltage for the AD7450BRM?
The reference voltage can be varied from 100 mV to 3.5 V.
- Does the AD7450BRM have pipeline delays?
No, the AD7450BRM does not have pipeline delays due to its SAR architecture.
- What types of interfaces does the AD7450BRM support?
The AD7450BRM supports high-speed serial interfaces compatible with SPI/QSPI/MICROWIRE/DSP.
- What is the power-down current of the AD7450BRM?
The power-down current is 1 μA maximum.
- What are the typical applications of the AD7450BRM?
The AD7450BRM is typically used in transducer interfaces, battery-powered systems, data acquisition systems, portable instrumentation, motor control systems, and communications systems.
- What is the input bandwidth of the AD7450BRM?
The AD7450BRM has a wide input bandwidth with a –3 dB point typically at 20 MHz.
- What package types are available for the AD7450BRM?
The AD7450BRM is available in 8-lead SOIC or MSOP packages.
