Overview
The AD7450BRMZ is a 12-bit, high-speed, low-power successive approximation (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device 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 1 MSPS with a 5 V supply and up to 833 kSPS with a 3 V supply. The AD7450BRMZ includes a low noise, wide bandwidth differential track-and-hold amplifier, making it suitable for a variety of high-frequency applications. The device also offers flexible power and serial clock speed management, allowing for reduced power consumption at lower throughput rates.
Key Specifications
| Parameter | Conditions/Comments | Unit | Value |
|---|---|---|---|
| Resolution | - | Bits | 12 |
| Throughput Rate | VDD = 5 V | MSPS | 1 |
| Throughput Rate | VDD = 3 V | kSPS | 833 |
| Power Supply | - | V | 3 V or 5 V |
| Conversion Time | With an 18 MHz SCLK | ns | 888 |
| Track-and-Hold Acquisition Time | - | ns | 200 max |
| 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 |
| Operating Temperature | - | °C | -40 to +85 |
| Package Type | - | - | 8-MSOP |
Key Features
- Fully differential analog input
- High throughput rates with low power consumption
- Flexible power and serial clock speed management
- Variable voltage reference input (100 mV to 3.5 V)
- No pipeline delay
- Accurate control of the sampling instant via CS input and once-off conversion control
- Low noise, wide bandwidth differential track-and-hold amplifier
- Shutdown mode for power efficiency at lower throughput rates
Applications
The AD7450BRMZ is suitable for various applications requiring high-speed, low-power analog-to-digital conversion. These include:
- Industrial automation and control systems
- Medical devices and diagnostic equipment
- Aerospace and defense systems
- High-speed data acquisition systems
- Automotive systems requiring precise and fast analog-to-digital conversion
Q & A
- What is the resolution of the AD7450BRMZ ADC?
The AD7450BRMZ has a resolution of 12 bits. - What are the possible power supply voltages for the AD7450BRMZ?
The device can operate with either a 3 V or 5 V power supply. - What is the maximum throughput rate of the AD7450BRMZ with a 5 V power supply?
The maximum throughput rate is 1 MSPS with a 5 V power supply. - How does the AD7450BRMZ manage power consumption at lower throughput rates?
The device features flexible power and serial clock speed management, including a shutdown mode to reduce power consumption at lower throughput rates. - What is the range of the reference voltage for the AD7450BRMZ?
The reference voltage can be varied from 100 mV to 3.5 V. - Does the AD7450BRMZ have pipeline delays?
No, the AD7450BRMZ does not have pipeline delays due to its SAR architecture. - What is the operating temperature range of the AD7450BRMZ?
The operating temperature range is -40°C to +85°C. - What type of package does the AD7450BRMZ come in?
The device comes in an 8-MSOP package. - How is the sampling instant controlled in the AD7450BRMZ?
The sampling instant is controlled accurately via the CS input and once-off conversion control. - What are some typical applications of the AD7450BRMZ?
Typical applications include industrial automation, medical devices, aerospace and defense systems, high-speed data acquisition systems, and automotive systems.
