Overview
The AD7853AN, produced by Analog Devices Inc., is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) designed to operate from a single 3 V or 5 V power supply. This device is optimized for speed, offering a throughput rate of 200 kHz. The AD7853AN features automatic self-calibration and system-calibration options to ensure accurate operation over time and temperature. It also includes flexible power management options, such as automatic power-down after conversion, making it suitable for low-power applications. The ADC is available in 24-lead DIP, SOIC, and SSOP packages.
Key Specifications
| Parameter | Value | Units | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 12 bits | - | - |
| Throughput Rate | 200 kHz | - | - |
| Power Supply | 3 V to 5 V | - | - |
| Power Consumption | 12 mW (VDD = 3 V) | mW | Typical operation |
| Power-Down Mode | 25 μW | μW | After conversion |
| Input Signal Range | 0 to VDD | V | - |
| Signal to Noise + Distortion Ratio (SNR) | 70 dB min | dB | VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz |
| Total Harmonic Distortion (THD) | -78 dB | dB | VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz |
| Input Track-and-Hold Acquisition Time | 500 ns | ns | - |
| Serial Interface | SPI/QSPI/8051/μP compatible | - | - |
| Package Options | 24-lead DIP, SOIC, SSOP | - | - |
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)
- Low power consumption with CMOS construction
- Pseudo-differential sampling scheme
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 resolution of the AD7853AN ADC?
The AD7853AN has a resolution of 12 bits.
- What is the throughput rate of the AD7853AN?
The AD7853AN has a throughput rate of 200 kHz.
- What are the power supply options for the AD7853AN?
The AD7853AN can operate from a single 3 V or 5 V power supply.
- How much power does the AD7853AN consume during typical operation?
The AD7853AN consumes 12 mW of power at VDD = 3 V during typical operation.
- What is the power consumption in power-down mode?
The power consumption in power-down mode is 25 μW.
- What is the input signal range for the AD7853AN?
The input signal range is from 0 V to VDD.
- What is the signal to noise + distortion ratio (SNR) of the AD7853AN?
The SNR is typically 70 dB min.
- What is the total harmonic distortion (THD) of the AD7853AN?
The THD is typically -78 dB.
- How long does the input track-and-hold acquisition take?
The input track-and-hold acquisition time is 500 ns.
- What serial interfaces are supported by the AD7853AN?
The AD7853AN supports SPI, QSPI, 8051, and μP compatible serial interfaces.
