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AD7940BRM-REEL7
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Product Detailed Parameters
- Description：IC ADC 14BIT SAR 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Number of Bits：14
- Sampling Rate (Per Second)：100k
- Number of Inputs：1
- Input Type：Single Ended
- Data Interface：SPI, DSP
- Configuration：S/H-ADC
- Ratio - S/H:ADC：1:01
- Number of A/D Converters：1
- Architecture：SAR
- Reference Type：Supply
- Voltage - Supply, Analog：2.5V ~ 5.5V
- Voltage - Supply, Digital：2.5V ~ 5.5V
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-MSOP
- Mounting Type：Surface Mount
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Overview
The AD7940BRM-REEL7 is a 14-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single supply voltage ranging from 2.5 V to 5.5 V and supports throughput rates up to 100 kSPS. The device features an internal track-and-hold amplifier with a full power bandwidth of 7 MHz and derives its reference internally from the power supply, allowing an input range of 0 V to VDD. It utilizes a high-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. The component is housed in a compact 6-lead SOT-23 package.
Feature Summary
- Integrated track-and-hold amplifier supporting wide input bandwidth
- Internal reference derived directly from the power supply
- Flexible power management with programmable shutdown modes
- Standard serial interface compatible with common microprocessor protocols
Applications
- Battery-powered systems
- Personal digital assistants
- Medical instruments
- Mobile communications
- Instrumentation and control systems
Procurement Notes
Verify that the ordering suffix REEL7 corresponds to tape-and-reel packaging as specified in the manufacturer's documentation. Confirm the B version temperature rating covers the required operating range of -40°C to +85°C. Ensure the specific lot date code meets project requirements before finalizing orders.
Selection Notes
Select this component for applications requiring high resolution in a minimal footprint. The internal reference simplifies design by eliminating external components. Consider the power-down mode for battery-operated devices to extend runtime. Verify that the source impedance driving the analog input remains low to maintain optimal dynamic performance specifications.
Part Context
This part belongs to the AD7940 family of 14-bit ADCs. It is distinguished by its SOT-23 packaging, which offers space-saving advantages over larger packages like MSOP. The BRM variant specifically denotes the B grade temperature range and the reel packaging format, differentiating it from tube-packaged or commercial grade alternatives within the same series.
Replacement Considerations
The AD7940BRMZ is a pin-compatible alternative available in an 8-lead MSOP package. Other members of the AD794x family offer similar functionality but may differ in channel configuration or package type.
