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AD7854LARSZ-REEL
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Product Detailed Parameters
- Description：IC ADC 12BIT SAR 28SSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Number of Bits：12
- Sampling Rate (Per Second)：100k
- Number of Inputs：1
- Input Type：Pseudo-Differential
- Data Interface：SPI
- Configuration：S/H-ADC
- Ratio - S/H:ADC：1:01
- Number of A/D Converters：1
- Architecture：SAR
- Reference Type：External, Internal
- Voltage - Supply, Analog：3V ~ 5.5V
- Voltage - Supply, Digital：3V ~ 5.5V
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：28-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：28-SSOP
- Mounting Type：Surface Mount
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Overview
The AD7854LARSZ-REEL is a 12-bit analog-to-digital converter manufactured by Analog Devices Inc. It operates on a single 3 V to 5.5 V supply and features a throughput rate of 100 kSPS. The device utilizes a SAR architecture with a pseudo-differential input scheme and supports flexible parallel interfaces. It includes internal self-calibration and system calibration capabilities, along with multiple power-down modes for optimized energy efficiency in battery-powered applications.
Feature Summary
- Integrated self-calibration and system calibration mechanisms ensure long-term accuracy across temperature variations.
- Flexible power management options include automatic power-down after conversion to minimize energy consumption.
- Supports both unipolar and bipolar analog input ranges with straight binary or two's complement coding.
Applications
- Battery-powered personal digital assistants and mobile communication devices
- Medical instrumentation systems requiring low power consumption
- Pen computers and portable data acquisition units
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Ensure compatibility with existing board layouts regarding the 28-lead SSOP footprint. Confirm that the reel packaging meets storage and handling requirements for moisture-sensitive devices prior to assembly.
Selection Notes
Select this component when a balance of moderate speed and low power consumption is required. The AD7854L variant is specifically optimized for lower power dissipation compared to the standard AD7854. Consider the available parallel interface options and calibration needs when designing the system architecture.
Part Context
This part belongs to the AD7854 family of high-speed, low-power 12-bit sampling ADCs. The 'L' designation indicates the low-power version optimized for extended battery life. The 'RS' suffix denotes the 28-lead small shrink outline package, while '-REEL' specifies the tape and reel shipping configuration.
Replacement Considerations
The standard AD7854ARZ offers higher speed performance at 200 kSPS but consumes more power. Verify if the increased throughput is necessary for the application. Other variants in the series may offer different package styles or extended temperature ranges.
