Overview
The AD7451BRT-R2 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 pseudo-differential analog input and operates from a single 2.7 V to 5.25 V power supply. It is designed for high throughput rates up to 1 MSPS and is particularly suited for applications requiring low power consumption and high accuracy.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 12 | |
| Sampling Rate | 1 MSPS | |
| Input Type | Pseudo-Differential | |
| Supply Voltage (Digital/Analog) | 2.7 V to 5.25 V | V |
| Operating Temperature | -40°C to 85°C | °C |
| Package/Case | 8-MSOP, 8-TSSOP | |
| Reference Type | External | |
| Signal-to-Noise Ratio (SNR) at 100 kHz | 70 dB min | dB |
| Total Harmonic Distortion (THD) at 100 kHz | -85 dB min | dB |
| Power Consumption at 1 MSPS with 3 V supply | 4 mW max | mW |
Key Features
- High throughput rate up to 1 MSPS with low power consumption.
- Pseudo-differential analog input with a wide input bandwidth.
- Flexible power and serial clock speed management to reduce power consumption.
- No pipeline delays due to SAR architecture.
- External reference voltage input ranging from 100 mV to 3.5 V.
- Accurate control of the sampling instant via the CS input.
- High-speed serial interface compatible with SPI, QSPI, MICROWIRE, and 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 maximum sampling rate of the AD7451BRT-R2?
The maximum sampling rate is 1 MSPS (1 million samples per second).
- What is the input type of the AD7451BRT-R2?
The input type is pseudo-differential.
- What is the operating voltage range of the AD7451BRT-R2?
The operating voltage range is from 2.7 V to 5.25 V.
- What is the operating temperature range of the AD7451BRT-R2?
The operating temperature range is from -40°C to 85°C.
- What is the package type of the AD7451BRT-R2?
The package types are 8-MSOP and 8-TSSOP.
- Does the AD7451BRT-R2 have pipeline delays?
No, the SAR architecture ensures there are no pipeline delays.
- How is the power consumption managed in the AD7451BRT-R2?
The power consumption is managed through flexible power and serial clock speed management, allowing power reduction as the conversion time is reduced.
- What is the signal-to-noise ratio (SNR) of the AD7451BRT-R2 at 100 kHz input frequency?
The SNR is 70 dB minimum.
- Is the AD7451BRT-R2 RoHS compliant?
- What interfaces does the AD7451BRT-R2 support?
The AD7451BRT-R2 supports high-speed serial interfaces compatible with SPI, QSPI, MICROWIRE, and DSP.
