Analog Devices AD7944BCPZ-RL7 Datasheet
The AD7944BCPZ-RL7 is a high-performance, 14-bit, 2.5 MSPS successive approximation register (SAR) analog-to-digital converter (ADC) engineered by Analog Devices. Featuring an integrated low-power, high-speed sampling architecture, an on-chip reference buffer, and error correction circuitry, it delivers exceptional AC accuracy and DC precision with zero pipeline delay or latency. This makes it an ideal fit for multiplexed channel applications and high-speed data acquisition systems.
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Part Number: AD7944BCPZ-RL7
Manufacturer: Analog Devices Inc.
Stock: 4, 000 pcs
Date Code: 24+
Package: LFCSP
Technical Specifications Table of AD7944BCPZ-RL7
The following technical parameters highlight the critical operating conditions, voltage tolerances, and compliance standards essential for hardware procurement and layout design:
| Parameter | Specifications |
| Resolution | 14-Bit |
| Throughput Rate | 2.5 MSPS 2.0 MSPS |
| Operating Temperature Range | -40°C to +85°C (Industrial Grade) |
| Analog Supply Voltage (AVDD / DVDD) | 2.375V to 2.625 V (Nominal: 2.5V) |
| Reference Buffer Supply Voltage (BVDD) | 4.75V to 5.25V (Nominal: 5.0V) |
| Digital I/O Supply Voltage (VIO) | 1.8V to 2.7V |
| Package Type | 20-Lead Lead Frame Chip Scale Package [LFCSP] / QFN (4mm x 4mm body) |
| RoHS/REACH Compliance | Fully Compliant |
Supply Chain & Procurement Insights
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Manufacturer: Analog Devices (ADI)
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Factory Lead Time Trend: Precision data converters like the PulSAR ADC series generally maintain steady factory lead times. However, during periods of localized raw material shortages or sudden demand spikes in industrial automation and healthcare sectors, standard lead times via traditional franchise channels can expand significantly.
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ICHOME Advantage: To mitigate long lead times and production line downtime, ICHOME leverages an established, audited global supply chain network. We maintain factory-sealed inventory of the AD7944BCPZ-RL7, offering global delivery within days rather than weeks, backed by comprehensive component testing and traceability protocols.
Alternative Drop-in & Functional Replacements of AD7944BCPZ-RL7
When compiling your Bill of Materials (BOM) or designing for supply chain resilience, consider these pin-for-pin compatible options from the same Analog Devices PulSAR family:
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AD7985 (16-Bit Upgrade): Pin-for-pin compatible companion model providing higher 16-bit resolution for designs requiring finer precision without rewriting layout topography.
- AD7986 (18-Bit Upgrade): Pin-for-pin compatible variant delivering maximum 18-bit dynamic performance for advanced test equipment or medical instrumentation.
- AD7944BCPZ: The identical silicon part housed in standard matrix tray packaging (490 pieces per tray) rather than Tape and Reel. It serves as an immediate alternative if placement machinery handles tray feeds.
Core Application of ADI AD7944BCPZ-RL7
The AD7944BCPZ-RL7's unique balance of low power consumption and high-speed data throughput satisfies the rigorous validation standards of several demanding industries:
Data Acquisition Systems (DAQ): Zero pipeline delay allows flawless synchronization across multi-channel multiplexed inputs.
Medical Instruments: Low noise floor, high SNR ($84.5\text{ dB}$ with external reference), and high power-to-performance scaling fit patient-monitoring and imaging electronics.
Automated Test Equipment (ATE): Precision DC linearity ($\pm0.25\text{ LSB}$ typical INL) guarantees highly repeatable electronic instrumentation testing.
Battery-Powered Equipment: In normal mode, the converter powers down automatically between conversions, matching the power consumption directly to the lower sampling rates.
Communications Infrastructure: SPI/QSPI/MICROWIRE/DSP-compatible digital interfaces seamlessly hook into mainstream communication backplanes.
What Is the Structural Difference Between AD7944 Turbo Mode and Normal Mode?
The primary difference lies in the throughput ceiling, power management, and the accuracy of the very first conversion block:
Turbo Mode (TURBO pin pulled High): Runs at the maximum conversion speed of up to 2.5 MSPS. The internal converter remains powered up continuously between cycles to maintain top operational speed. Note: The very first conversion cycle output contains meaningless data and should be discarded by the host controller.
Normal Mode (TURBO pin pulled Low): Limits maximum throughput to 2.0 MSPS. The device powers down automatically immediately after a conversion concludes, scaling power linearly with the clock rate. Crucially, the first conversion in normal mode contains fully valid, meaningful data.
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