Overview
The AD7934BRU, produced by Analog Devices Inc., is a 12-bit, high-speed, low-power successive approximation (SAR) analog-to-digital converter (ADC). This component operates from a single 2.7 V to 5.25 V power supply and features a throughput rate of up to 1.5 MSPS. It is designed with four analog input channels and a built-in channel sequencer, allowing for the sequential conversion of preprogrammed channels. The AD7934BRU supports various input configurations, including single-ended, fully differential, and pseudo differential analog inputs.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Throughput Rate | Up to 1.5 MSPS |
| Power Supply | 2.7 V to 5.25 V |
| Power Consumption | 6 mW maximum at 1.5 MSPS with 3 V supplies, 13.5 mW maximum at 1.5 MSPS with 5 V supplies |
| Analog Input Channels | 4 channels (single-ended, fully differential, or pseudo differential) |
| On-chip Reference | 2.5 V ±0.2% maximum @ 25°C, 25 ppm/°C maximum |
| SINAD at 50 kHz Input Frequency | 70 dB |
| Package Type | 28-lead TSSOP |
| Operating Temperature Range | –40°C to +85°C |
| Shutdown Current | 2 μA maximum |
Key Features
- High-speed parallel interface in word/byte modes
- No pipeline delays
- Low noise, wide bandwidth differential track-and-hold amplifier handling input frequencies up to 50 MHz
- Software-configurable analog inputs
- Flexible power management options including full shutdown mode
- On-chip control register for setting operating conditions such as analog input range and configuration, output coding
- Accurate on-chip 2.5 V reference with the option to use an external reference
Applications
The AD7934BRU is suitable for a variety of 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
- Embedded systems requiring precise analog-to-digital conversion
Q & A
- What is the resolution of the AD7934BRU?
The AD7934BRU has a resolution of 12 bits.
- What is the throughput rate of the AD7934BRU?
The throughput rate of the AD7934BRU is up to 1.5 MSPS.
- What are the power supply requirements for the AD7934BRU?
The AD7934BRU operates from a single 2.7 V to 5.25 V power supply.
- How many analog input channels does the AD7934BRU have?
The AD7934BRU has four analog input channels that can be configured as single-ended, fully differential, or pseudo differential inputs.
- What is the accuracy of the on-chip reference voltage?
The on-chip reference voltage is accurate to ±0.2% maximum at 25°C and 25 ppm/°C maximum.
- Does the AD7934BRU have any pipeline delays?
No, the AD7934BRU does not have any pipeline delays.
- What is the package type of the AD7934BRU?
The AD7934BRU is available in a 28-lead TSSOP package.
- What is the operating temperature range of the AD7934BRU?
The operating temperature range of the AD7934BRU is –40°C to +85°C.
- How much current does the AD7934BRU consume in shutdown mode?
The AD7934BRU consumes a maximum of 2 μA in full shutdown mode.
- Is the AD7934BRU still in production?
No, the AD7934BRU is obsolete and no longer manufactured.
