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AD7997BRUZ-0
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Product Detailed Parameters
- Description：IC ADC 10BIT SAR 20TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：10
- 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 AD7997BRUZ-0 is an 8-channel, 10-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features a single-ended input architecture and operates from a 2.7 V to 5.5 V supply. The device supports I2C-compatible serial interfaces with standard and fast modes. Key electrical parameters include a maximum throughput rate of 188 kSPS, a typical conversion time of 2 µs, and a shutdown current of 1 µA max. It is housed in a 20-lead TSSOP package and functions within a temperature range of −40°C to +85°C.
Feature Summary
- Integrates an 8-channel multiplexer and track-and-hold amplifier for single-ended signals.
- Supports pin-selectable I2C addressing to allow multiple devices on the same bus.
- Includes programmable limit registers with an out-of-range alert indicator function.
Applications
- Battery-powered data acquisition systems
- Industrial process control monitoring
- Portable instrumentation
Procurement Notes
Verify the specific suffix '0' indicates support for standard and fast I2C modes only, distinguishing it from the '-1' variant which supports high-speed mode. Confirm the B version designation corresponds to the commercial temperature range of -40°C to +85°C. Ensure the external reference voltage applied to REFIN falls within the specified 1.2 V to VDD range for proper operation.
Selection Notes
Select this component when eight single-ended channels are required with moderate resolution. Compare against the AD7998 if 12-bit accuracy is necessary instead of 10-bit. Consider the AD7993 or AD7994 if fewer channels are sufficient for the application design constraints.
Part Context
This part belongs to the AD7997/AD7998 family of low-power, 8-channel ADCs. It shares the same physical footprint and interface protocols as the 12-bit AD7998 variant. The family is designed for applications requiring sequential sampling of multiple analog inputs with minimal power consumption during idle periods.
Replacement Considerations
The AD7998BRUZ-0 offers identical pinout and interface but provides 12-bit resolution. For lower channel counts, the AD7993BRUZ-0 (4-channel, 10-bit) and AD7994BRUZ-0 (4-channel, 12-bit) serve as compatible alternatives with reduced pin requirements.
