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AD7853AN
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Product Detailed Parameters
- Description：IC ADC 12BIT SRL 200KSPS 24-DIP
- Series：*
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：12
- Sampling Rate (Per Second)：-
- Number of Inputs：-
- Input Type：-
- Data Interface：-
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：-
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：-
- Package / Case：24-DIP (0.300", 7.62mm)
- Supplier Device Package：24-PDIP
- Mounting Type：Through Hole
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Overview
The AD7853AN is a 12-bit, high-speed Analog-to-Digital Converter (ADC) from Analog Devices Inc., housed in a 24-lead Plastic DIP package. It operates on a single 3 V to 5.5 V supply and supports throughput rates up to 200 kSPS. The device features a pseudo-differential input range of 0 to VREF or bipolar ranges, with serial interfaces compatible with SPI, QSPI, and 8051 protocols. Key specifications include a maximum conversion time of 4.6 ms, typical power dissipation of 20 mW at 3.6 V, and an operating temperature range of -40°C to +85°C.
Feature Summary
- Integrated self-calibration and system calibration capabilities with automatic power-up initialization.
- Flexible serial interface supporting multiple clocking modes including external SCLK and internal self-clocking.
- Automatic power-down functionality after conversion to minimize energy consumption during idle periods.
- Pseudo-differential analog input architecture allowing for versatile signal conditioning options.
Applications
- Battery-powered portable systems such as personal digital assistants and mobile communications devices.
- Medical instrumentation requiring precise low-power data acquisition.
- Pen computers and handheld control systems.
- High-speed modem applications utilizing fast sampling rates.
Procurement Notes
Verify the specific grade (A or B) and revision level when sourcing the AD7853AN component. Confirm that the 24-lead Plastic DIP package matches the required footprint for the target PCB design. Ensure compatibility with the intended supply voltage range of 3 V to 5.5 V for both analog and digital domains.
Selection Notes
Select the AD7853AN when a 12-bit resolution and 200 kSPS speed are required in a through-hole DIP package. Consider the AD7853L variant if lower power consumption is prioritized over maximum throughput. Evaluate the need for external reference components versus using the internal reference buffer based on system noise requirements.
Part Context
The AD7853AN belongs to the AD7853/AD7853L family of single-supply sampling ADCs. This series is designed for applications balancing speed and power efficiency. The 'AN' suffix specifically denotes the 24-lead Plastic Dual In-Line Package (DIP), distinguishing it from SOIC or SSOP surface-mount variants within the same functional family.
Replacement Considerations
Direct pin-compatible replacements may include other 12-bit SAR ADCs in 24-pin DIP packages from Analog Devices or competitors. Verify that substitute parts support the same 3 V to 5.5 V supply range and SPI-compatible serial interface timing before integration.
