Overview
The AD7450BRZ, 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 AD7450BRZ includes a low noise, wide bandwidth differential track-and-hold amplifier (T/H) capable of handling input frequencies in excess of 1 MHz.
Key Specifications
| Parameter | Conditions/Comments | Unit | Value |
|---|---|---|---|
| Resolution | - | Bits | 12 |
| Sampling Rate | With 3 V supply | kSPS | Up to 833 |
| Sampling Rate | With 5 V supply | kSPS | Up to 1000 |
| Power Supply | - | V | 3 V (±10%) or 5 V (±5%) |
| Power Consumption | At 3 V supply, 833 kSPS | mW | 3.75 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 |
| Reference Voltage Range | - | V | 100 mV to 3.5 V |
| Package Type | - | - | 8-Lead Mini Small Outline Package (SOIC-8) |
| Operating Temperature Range | - | °C | -40 to +85 |
Key Features
- High Throughput with Low Power Consumption: Achieves high sampling rates with minimal power consumption, making it suitable for power-sensitive applications.
- Fully Differential Analog Input: Allows for flexible input range and bias point selection, enhancing the component's versatility.
- Variable Voltage Reference Input: The reference voltage can be varied from 100 mV to 3.5 V, depending on the application requirements.
- No Pipeline Delay: The SAR architecture ensures there are no pipeline delays, providing accurate and real-time data conversion.
- Flexible Power and Serial Clock Speed Management: The conversion rate can be adjusted via the serial clock speed, allowing for power reduction at lower throughput rates.
- Shutdown Mode: Maximizes power efficiency at lower throughput rates.
- Accurate Control of Sampling Instant: Sampling and conversion are controlled via the CS input, ensuring precise timing.
Applications
The AD7450BRZ is suitable for a variety of applications that require high-speed, low-power analog-to-digital conversion. These include:
- Industrial Automation: For precise and fast data acquisition in industrial control systems.
- Medical Devices: In medical equipment that requires accurate and real-time data conversion.
- Aerospace and Defense: For applications where high reliability and low power consumption are critical.
- Automotive Systems: In automotive sensors and control systems that need high-speed data conversion.
- Test and Measurement Equipment: For instruments that require precise and fast analog-to-digital conversion.
Q & A
- What is the resolution of the AD7450BRZ ADC?
The AD7450BRZ has a resolution of 12 bits.
- What are the operating power supply options for the AD7450BRZ?
The AD7450BRZ can operate from either a 3 V (±10%) or a 5 V (±5%) power supply.
- What is the maximum sampling rate of the AD7450BRZ with a 3 V supply?
The maximum sampling rate with a 3 V supply is up to 833 kSPS.
- What is the maximum sampling rate of the AD7450BRZ with a 5 V supply?
The maximum sampling rate with a 5 V supply is up to 1 MSPS.
- What is the power consumption of the AD7450BRZ at 833 kSPS with a 3 V supply?
The power consumption is 3.75 mW maximum at 833 kSPS with a 3 V supply.
- Does the AD7450BRZ have pipeline delays?
No, the SAR architecture of the AD7450BRZ ensures there are no pipeline delays.
- How is the sampling and conversion process controlled in the AD7450BRZ?
The sampling and conversion process is controlled via the CS input and the serial clock.
- What is the range of the reference voltage for the AD7450BRZ?
The reference voltage can be varied from 100 mV to 3.5 V.
- What is the operating temperature range of the AD7450BRZ?
The operating temperature range is -40°C to +85°C.
- What package type is the AD7450BRZ available in?
The AD7450BRZ is available in an 8-Lead Mini Small Outline Package (SOIC-8).
