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AD7912AUJ-R2
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Product Detailed Parameters
- Description：IC ADC DUAL 10BIT 2CH TSOT-23-8
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Number of Bits：10
- Sampling Rate (Per Second)：1M
- Number of Inputs：-
- Input Type：-
- Data Interface：SPI, DSP
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：1
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- 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 AD7912AUJ-R2 is a 10-bit, 2-channel successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices. It operates from a single 2.35 V to 5.25 V supply and supports throughput rates up to 1 MSPS. The device features an internal track-and-hold amplifier capable of handling input frequencies exceeding 6 MHz. Power consumption is low, with typical dissipation of 4.8 mW at 1 MSPS using 3 V supplies. It includes a flexible serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, and offers a daisy-chain mode for multiple device connections.
Feature Summary
- Dual-channel architecture with integrated track-and-hold amplifier
- Low power operation with standby mode reducing current to 1 µA maximum
- Flexible serial interface supporting standard communication protocols
- Daisy-chain capability for cascading multiple ADC units
Applications
- Battery-powered systems such as personal digital assistants
- Medical instruments requiring precise data acquisition
- Mobile communications equipment
- Instrumentation and control systems
- High-speed modems and optical sensors
Procurement Notes
Verify the specific suffix R2 against official documentation to confirm reel packaging status. Ensure compatibility with the TSOT-8 package outline dimensions during PCB layout. Confirm that the A Grade temperature range meets operational requirements. Cross-reference the ordering guide for any alternative package options if surface mount constraints vary.
Selection Notes
Select this component when dual-channel conversion is required within space-constrained designs. The 10-bit resolution suits applications where moderate accuracy is sufficient. Consider the 1 MSPS throughput rate relative to the system clock speed. Evaluate power consumption profiles across different supply voltages to optimize battery life in portable devices.
Part Context
This part belongs to the AD7912/AD7922 family of high-speed, low-power ADCs. The AD7912 variant specifically provides 10-bit resolution, while the AD7922 offers 12-bit resolution. Both share identical pinouts and functional characteristics, differing primarily in bit depth and associated dynamic performance metrics like signal-to-noise ratio.
Replacement Considerations
The AD7922AUJ-R2 serves as a higher-resolution alternative within the same package. Verify pin compatibility before substitution. Check if the increased resolution meets system requirements without impacting power budgets or timing constraints significantly.
