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AD7998BRUZ-0REEL
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Product Detailed Parameters
- Description：IC ADC 12BIT SAR 20TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：12
- Sampling Rate (Per Second)：188k
- Number of Inputs：8
- 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 ~ 85°C
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-TSSOP
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD7998BRUZ-0REEL is an 8-channel, 12-bit successive approximation analog-to-digital converter (ADC) featuring an I2C-compatible serial interface. It operates from a single 2.7 V to 5.5 V supply and achieves a throughput rate of up to 188 kSPS with a typical conversion time of 2 µs. The device integrates an 8:1 multiplexer and track-and-hold amplifier capable of handling input frequencies up to 11 MHz. It utilizes an external reference voltage ranging from 1.2 V to VDD applied to the REFIN pin. The component is housed in a 20-lead TSSOP package and supports standard, fast, and high-speed I2C modes.
Feature Summary
- Integrates an 8-channel multiplexer and track-and-hold amplifier for efficient multi-point signal acquisition.
- Features an I2C-compatible serial interface with pin-selectable addressing to support multiple devices on a single bus.
- Includes programmable limit registers and an open-drain ALERT output for out-of-range monitoring.
- Supports automatic shutdown during non-conversion periods to minimize power consumption.
Applications
- Battery-powered instrumentation systems requiring low power consumption.
- Industrial process control applications utilizing I2C communication.
- Portable data acquisition systems with limited channel counts.
- Environmental monitoring sensors interfacing via serial buses.
Procurement Notes
Verify the specific ordering suffix against manufacturer documentation to confirm interface mode capabilities. Ensure the selected variant matches the required I2C speed specifications for the target application design.
Selection Notes
Select this component when eight single-ended inputs are required within a compact surface-mount footprint. Consider the AD7997 if 10-bit resolution is sufficient, or the AD7994 for four-channel configurations. Verify that the system clock frequency aligns with the supported I2C modes.
Part Context
This part belongs to the AD799x family of low-power, I2C-compatible ADCs manufactured by Analog Devices. It shares architectural similarities with the AD7997, differing primarily in resolution. Related parts include the AD7992 and AD7994 for lower channel counts.
Replacement Considerations
The AD7997BRUZ-0REEL serves as a direct functional substitute with reduced resolution. The AD7998BRUZ-1REEL offers identical performance but supports high-speed I2C modes.
