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AD7921AUJZ-REEL7
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Product Detailed Parameters
- Description：IC ADC 12BIT SAR TSOT23-8
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：12
- Sampling Rate (Per Second)：250k
- Number of Inputs：2
- Input Type：Single Ended
- Data Interface：SPI, DSP
- Configuration：MUX-S/H-ADC
- Ratio - S/H:ADC：1:01
- Number of A/D Converters：1
- Architecture：SAR
- Reference Type：Supply
- Voltage - Supply, Analog：2.35V ~ 5.25V
- Voltage - Supply, Digital：2.35V ~ 5.25V
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：SOT-23-8 Thin, TSOT-23-8
- Supplier Device Package：TSOT-23-8
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD7921AUJZ-REEL7 is a dual-channel, 12-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single power supply ranging from 2.35 V to 5.25 V and supports throughput rates up to 250 kSPS. The device features an internal track-and-hold amplifier capable of handling input frequencies exceeding 6 MHz. It utilizes a flexible serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. Power consumption is optimized for battery applications, dissipating approximately 4 mW at 250 kSPS with a 3 V supply.
Feature Summary
- Dual-channel architecture with integrated track-and-hold amplifier
- Low power operation with programmable power-down mode
- Flexible serial interface supporting multiple communication protocols
- Internal reference derived directly from the power supply
Applications
- Battery-powered personal digital assistants
- Medical instruments
- Mobile communications systems
- Data acquisition systems
- High-speed modems
Procurement Notes
Verify that the component matches the specific package type and voltage specifications required for the target application. Confirm compliance with environmental regulations such as RoHS standards before integration into final products.
Selection Notes
Select this model when a 12-bit resolution is required alongside high-speed sampling capabilities. Ensure the system design accommodates the specified input voltage range and provides adequate clocking for the desired throughput rate.
Part Context
This component belongs to the AD7911/AD7921 family of low-power, high-speed ADCs. The AD7921 variant specifically offers 12-bit resolution compared to the 10-bit resolution of the AD7911, while sharing identical pinouts and operational characteristics.
Replacement Considerations
The AD7911AUJZ-REEL7 serves as a lower-resolution alternative within the same series. Verify compatibility regarding resolution requirements and ensure that the pinout remains consistent for direct substitution in existing designs.
