Overview
The AD7934BRUZ is a 12-bit, high-speed, low-power successive approximation (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. 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 advanced techniques to achieve very low power dissipation at high throughput rates and includes flexible power management options.
The AD7934BRUZ is housed in a 28-lead TSSOP package and includes four analog input channels with a channel sequencer, allowing for preprogrammed selection and sequential conversion of channels. The ADC can handle single-ended, fully differential, or pseudo differential analog inputs.
Key Specifications
| Parameter | 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 |
| Interface | High speed parallel interface—word/byte modes |
| Shutdown Mode | 2 μA maximum |
| Package | 28-lead TSSOP |
| Operating Temperature | −40°C to +85°C |
Key Features
- Software-configurable analog inputs: 4-channel single-ended, 2-channel fully differential, or 2-channel pseudo differential inputs.
- Accurate on-chip 2.5 V reference with ±0.2% maximum accuracy at 25°C and 25 ppm/°C maximum temperature coefficient.
- No pipeline delays and high speed parallel interface in word/byte modes.
- Full shutdown mode with 2 μA maximum current consumption.
- Low noise, wide bandwidth differential track-and-hold amplifier handling input frequencies up to 50 MHz.
- Flexible power management options and low power dissipation at high throughput rates.
- On-chip control register for setting up different operating conditions, including analog input range and configuration, output coding, etc.
Applications
- Communications: Suitable for various communication systems due to its high speed and low power consumption.
- Industrial Automation: Used in control and monitoring systems where precise and fast analog-to-digital conversion is required.
- Instrumentation and Measurement: Ideal for applications requiring accurate and high-speed data acquisition.
- Aerospace and Defense: Utilized in systems where reliability, precision, and low power consumption are critical.
- Motor and Power Control: Applied in motor control systems and power management applications.
- Healthcare: Used in medical devices that require precise and reliable analog-to-digital conversion.
Q & A
- What is the resolution of the AD7934BRUZ ADC?
The AD7934BRUZ is a 12-bit analog-to-digital converter.
- What is the throughput rate of the AD7934BRUZ?
The throughput rate of the AD7934BRUZ is up to 1.5 MSPS.
- What are the power supply requirements for the AD7934BRUZ?
The AD7934BRUZ operates from a single 2.7 V to 5.25 V power supply.
- How many analog input channels does the AD7934BRUZ have?
The AD7934BRUZ 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 has an accuracy of ±0.2% maximum at 25°C and a temperature coefficient of 25 ppm/°C maximum.
- What is the SINAD at 50 kHz input frequency for the AD7934BRUZ?
The SINAD at 50 kHz input frequency is 70 dB.
- What type of interface does the AD7934BRUZ use?
The AD7934BRUZ uses a high speed parallel interface in word/byte modes.
- What is the current consumption in shutdown mode?
The current consumption in full shutdown mode is 2 μA maximum.
- In what package is the AD7934BRUZ available?
The AD7934BRUZ is available in a 28-lead TSSOP package.
- What is the operating temperature range of the AD7934BRUZ?
The operating temperature range is −40°C to +85°C.
