Overview
The AD7853AR is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component operates from a single 3 V or 5 V power supply and is optimized for high-speed applications. The AD7853AR features automatic self-calibration and system-calibration options to ensure accurate operation over time and temperature. It powers up with a set of default conditions and can operate as a read-only ADC. The device is particularly suited for applications requiring high throughput rates and low power consumption.
Key Specifications
| Parameter | Value | Units | Test Conditions/Comments |
|---|---|---|---|
| Number of Bits | 12 | ||
| Sampling Rate | 200 kSPS | ||
| Input Signal Range | 0 to VREF | Reference voltage range from 1.2 V to VDD | |
| Supply Voltage | 3 V to 5 V | ||
| Power Consumption | 12 mW (VDD = 3 V) | Normal operation; 25 μW in power-down mode | |
| Signal to Noise + Distortion Ratio (SNR) | 70 dB min | VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz | |
| Total Harmonic Distortion (THD) | -78 dB | ||
| Input Track-and-Hold Acquisition Time | 500 ns | ||
| Package Type | 24-Lead SOIC, DIP, SSOP | ||
| Operating Temperature | -40°C to +85°C |
Key Features
- Automatic self-calibration and system-calibration on power-up
- Flexible power management options including automatic power-down after conversion
- Operates with reference voltages from 1.2 V to VDD
- Analog input ranges from 0 V to VDD
- Versatile serial I/O port (SPI/QSPI/8051/µP compatible)
- Pseudo-differential sampling scheme
- Low power consumption: 12 mW at 3 V supply, 25 μW in power-down mode
Applications
- Battery-Powered Systems (Personal Digital Assistants, Medical Instruments, Mobile Communications)
- Pen Computers
- Instrumentation and Control Systems
- High Speed Modems
Q & A
- What is the sampling rate of the AD7853AR?
The AD7853AR has a sampling rate of 200 kSPS.
- What are the power supply options for the AD7853AR?
The AD7853AR operates from a single 3 V or 5 V power supply.
- What is the power consumption of the AD7853AR?
The AD7853AR consumes 12 mW at a 3 V supply and 25 μW in power-down mode.
- What calibration options are available for the AD7853AR?
The AD7853AR features automatic self-calibration and system-calibration on power-up.
- What types of packages are available for the AD7853AR?
The AD7853AR is available in 24-Lead SOIC, DIP, and SSOP packages.
- What is the input signal range for the AD7853AR?
The input signal range is from 0 V to VREF, with reference voltage range from 1.2 V to VDD.
- What are the key applications of the AD7853AR?
The AD7853AR is used in battery-powered systems, pen computers, instrumentation and control systems, and high-speed modems.
- What is the signal to noise + distortion ratio (SNR) of the AD7853AR?
The SNR is 70 dB min for a 10 kHz sine wave at a sampling rate of 200 kHz.
- What is the total harmonic distortion (THD) of the AD7853AR?
The THD is -78 dB.
- How long does the input track-and-hold acquisition take for the AD7853AR?
The input track-and-hold acquisition time is 500 ns.
