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AD7887BRZ-REEL7
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Product Detailed Parameters
- Description：IC ADC 12BIT SAR 8SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Number of Bits：12
- Sampling Rate (Per Second)：125k
- Number of Inputs：1, 2
- Input Type：Single Ended
- Data Interface：SPI, DSP
- Configuration：MUX-S/H-ADC
- Ratio - S/H:ADC：1:01
- Number of A/D Converters：1
- Architecture：SAR
- Reference Type：External, Internal
- Voltage - Supply, Analog：2.7V ~ 5.25V
- Voltage - Supply, Digital：2.7V ~ 5.25V
- Features：-
- Operating Temperature：-40°C ~ 125°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD7887BRZ-REEL7 is a high-speed, low-power 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single 2.7 V to 5.25 V power supply and supports throughput rates up to 125 kSPS with a 2 MHz serial clock. The device features an internal track-and-hold amplifier that acquires signals in 1.5 SCLK cycles and offers flexible configuration for either single-channel or dual-channel operation via its control register. It utilizes a successive approximation architecture and provides a straight binary output code compatible with SPI, QSPI, Microwire, and DSP interfaces. The component is housed in an 8-lead MSOP package.
Feature Summary
- Configurable single-channel or dual-channel input modes via on-chip control register
- Integrated 2.5 V reference with capability for external overdrive
- Flexible power management including automatic shutdown after conversion
- Read-only ADC capability when data input line is grounded
Applications
- Battery-powered systems such as personal digital assistants and mobile communications
- Medical instruments requiring low power consumption
- Instrumentation and control systems
- High-speed modems
Procurement Notes
Verify the specific ordering suffix REEL7 confirms tape and reel packaging upon procurement. Confirm the B version grade specifications against application requirements, particularly regarding integral nonlinearity and differential nonlinearity tolerances. Ensure the 8-lead MSOP footprint matches the target PCB design constraints before finalizing orders.
Selection Notes
Select this component for applications requiring a small form factor 12-bit ADC with low power dissipation. The B version offers tighter linearity specifications compared to the A version. Consider the internal reference availability if external voltage references are undesirable. Verify interface compatibility with the host microcontroller's serial protocols.
Part Context
The AD7887 series includes variants like the AD7887ARZ and AD7887BRZ. The BRZ designation indicates the B grade performance level and RoHS compliance. The REEL7 suffix specifies the reel packaging format. This part belongs to the AD7887 family of micropower, 12-bit ADCs designed for portable and battery-operated electronics.
Replacement Considerations
The AD7887ARZ is a parameter-equivalent alternative within the same product family. Verify pinout compatibility and check if the A grade specifications meet the system requirements.
