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AD7999YRJZ-1RL
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Product Detailed Parameters
- Description：IC ADC 8BIT SAR SOT23-8
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：8
- Sampling Rate (Per Second)：140k
- Number of Inputs：3, 4
- Input Type：Single Ended
- Data Interface：I2C
- Configuration：MUX-S/H-ADC
- Ratio - S/H:ADC：1:01
- Number of A/D Converters：1
- Architecture：SAR
- Reference Type：External
- Voltage - Supply, Analog：2.7V ~ 5.5V
- Voltage - Supply, Digital：2.7V ~ 5.5V
- Features：-
- Operating Temperature：-40°C ~ 125°C
- Package / Case：SOT-23-8
- Supplier Device Package：SOT-23-8
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD7999YRJZ-1RL is an 8-bit, 4-channel successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates on a single 2.7 V to 5.5 V supply and features an I2C-compatible serial interface supporting standard, fast, and high-speed modes. The device includes a track-and-hold amplifier handling input frequencies up to 14 MHz and offers automatic shutdown with maximum current consumption of 1 µA. It is qualified for automotive applications and functions within a temperature range of −40°C to +125°C.
Feature Summary
- Four single-ended analog input channels or three channels with one reference input channel.
- I2C-compatible serial interface supporting standard, fast, and high-speed communication modes.
- Automatic power-down mode reducing current consumption to 1 µA maximum.
- Reference voltage derived from the power supply or an external source.
Applications
- System monitoring
- Battery-powered systems
- Data acquisition
- Medical instruments
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Confirm that the I2C address matches system requirements, as the AD7999 has a fixed configuration compared to other variants in the series. Ensure compatibility with the host controller's I2C bus speed and voltage levels before integration.
Selection Notes
Select this component when an 8-bit resolution is sufficient for the application's accuracy needs. Consider the 14 MHz full-power bandwidth for high-frequency signal sampling. Verify that the SOT-23-8 package fits the board layout constraints. Check if the fixed I2C address meets the multi-device addressing requirements of the design.
Part Context
The AD7999 is part of the AD7991/AD7995/AD7999 family, which shares a common pinout and interface but varies in resolution. While the AD7991 offers 12 bits and the AD7995 provides 10 bits, the AD7999 delivers 8-bit performance. All variants utilize the same 8-lead SOT-23 package and I2C interface, allowing for flexible design scaling based on precision requirements.
Replacement Considerations
The AD7999WYRJZ-1RL is a verified substitute within the same family, offering identical functionality and pinout. Other family members like the AD7995YRJZ-1RL provide higher resolution but may require verification of interface compatibility and address settings.
