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AD7853ARS
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Product Detailed Parameters
- Description：IC ADC 12BIT SRL 200KSPS 24-SSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：12
- Sampling Rate (Per Second)：200k
- Number of Inputs：-
- Input Type：-
- Data Interface：-
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：2
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：24-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：24-SSOP
- Mounting Type：Surface Mount
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Overview
The AD7853ARS is a 12-bit, single-channel Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc. It operates from a single 3 V to 5.5 V supply and supports a throughput rate of 200 kSPS. The device features a pseudo-differential input range of 0 V to VREF and offers both straight binary and two's complement output coding. Key specifications include a typical Signal-to-Noise + Distortion Ratio (SNR) of 72 dB, Total Harmonic Distortion (THD) of -78 dB max, and Integral Nonlinearity (INL) of ±1 LSB max at 5 V. Power consumption is typically 6.85 mW at 3 V. It utilizes a flexible serial interface compatible with SPI/QSPI/8051/microprocessor standards and includes system and self-calibration capabilities.
Feature Summary
- Integrated self-calibration and system calibration options ensure accurate operation over time and temperature variations.
- Flexible serial interface supports multiple communication protocols including SPI, QSPI, 8051, and microprocessor modes.
- Automatic power-down after conversion reduces power dissipation for low-power applications.
- Pseudo-differential sampling scheme with track-and-hold acquisition in 500 ns.
Applications
- Battery-powered systems such as personal digital assistants and mobile communications devices
- Medical instruments requiring precise analog signal digitization
- Pen computers and portable instrumentation systems
- High-speed modem applications
Procurement Notes
Verify the specific grade (A or B) and temperature range requirements against the datasheet specifications before procurement. Confirm that the SSOP-24 package dimensions align with the target PCB footprint. Ensure that the external reference voltage connected to REFIN/REFOUT falls within the functional range of 1.2 V to AVDD. Check for any obsolescence notices or product change notifications regarding this specific part number.
Selection Notes
Select the AD7853ARS when a high-speed 12-bit resolution is required with low power consumption under a single supply. Consider the AD7853L variant if lower power is prioritized over maximum throughput speed. Ensure the application can accommodate the 24-lead SSOP package size. Verify that the system clock frequency does not exceed the maximum specified limits for the chosen operating temperature range.
Part Context
The AD7853ARS belongs to the AD7853 family of high-speed, low-power 12-bit ADCs from Analog Devices. This family includes variants optimized for different performance trade-offs, such as the AD7853L for reduced power consumption. The AR suffix denotes the 24-lead Small Shrink Outline Package (SSOP). The component is designed for battery-operated systems where power efficiency and moderate speed are critical.
Replacement Considerations
The AD7853LARS is a lower power version within the same family offering 100 kSPS throughput. Other pin-compatible alternatives may exist but require verification of electrical specifications and interface compatibility.
