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AD7904BRUZ-REEL7
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Product Detailed Parameters
- Description：IC ADC 8BIT SAR 16TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：8
- Sampling Rate (Per Second)：1M
- Number of Inputs：4
- 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
- Voltage - Supply, Analog：2.7V ~ 5.25V
- Voltage - Supply, Digital：2.7V ~ 5.25V
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：16-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-TSSOP
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD7904BRUZ-REEL7 is an 8-bit, 4-channel successive approximation analog-to-digital converter (ADC) from Analog Devices. It operates on a single supply voltage ranging from 2.7 V to 5.25 V and supports throughput rates up to 1 MSPS. The device features four single-ended analog inputs with a programmable channel sequencer. It utilizes a high-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. Power consumption reaches a maximum of 13.5 mW at 5 V supplies during operation.
Feature Summary
- Includes a built-in channel sequencer for automated sequential conversion of multiple single-ended input channels.
- Features a flexible power management system with full shutdown and auto-shutdown modes to minimize current draw.
- Provides independent logic power supply via the VDRIVE pin, allowing direct interfacing with 3 V or 5 V processors.
Applications
- Battery-powered instrumentation systems requiring low power consumption
- Industrial process control data acquisition modules
- Automotive sensor signal conditioning circuits
Procurement Notes
Verify that the component matches the specific B version temperature rating of -40°C to +85°C. Confirm the package type is 16-lead TSSOP and check for automotive qualification if operating in harsh environments. Ensure the external reference voltage is set to 2.5 V ±1% for specified performance accuracy.
Selection Notes
Select this model when eight-bit resolution is sufficient for the application's dynamic range requirements. Consider the AD7914 or AD7924 variants if higher resolution (10-bit or 12-bit) is needed. Evaluate the need for the channel sequencer feature versus manual channel selection to optimize software complexity.
Part Context
This component belongs to the AD7904/AD7914/AD7924 family of high-speed, low-power ADCs. The family shares identical pinouts, functional blocks, and serial interfaces, differing primarily in resolution and DC accuracy specifications. The BRUZ suffix indicates the commercial temperature grade and TSSOP packaging.
Replacement Considerations
The AD7904WYRUZ is a qualified automotive alternative within the same family offering wider temperature tolerance. Other family members like the AD7914 provide 10-bit resolution while maintaining the same footprint and interface compatibility.
