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AD7904BRU-REEL
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Product Detailed Parameters
- Description：IC ADC 8BIT SAR 16TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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 AD7904BRU-REEL is an 8-bit, 4-channel successive approximation analog-to-digital converter (ADC) housed in a 16-lead TSSOP package. It operates from a single 2.7 V to 5.25 V supply with a maximum throughput rate of 1 MSPS. The device features four single-ended inputs managed by a channel sequencer and utilizes an external reference input. Power consumption reaches a maximum of 13.5 mW at 5 V supplies and 6 mW at 3 V supplies during operation. The signal-to-noise ratio is specified at 49 dB minimum for B versions.
Feature Summary
- Four single-ended analog inputs with a programmable channel sequencer for sequential conversion.
- Flexible power management with full shutdown mode reducing current consumption to 0.5 µA maximum.
- VDRIVE function allows the serial interface to connect directly to 3 V or 5 V processor systems independent of AVDD.
- No pipeline delays associated with the successive approximation conversion process.
Applications
- Battery-powered instrumentation
- Industrial process control
- Data acquisition systems
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging type and automotive qualification status. Ensure the component matches the required temperature range and pin configuration before integration into the design.
Selection Notes
Select this component when an 8-bit resolution and 1 MSPS throughput are sufficient for the application. Consider the AD7914 or AD7924 if higher resolution is required. Verify that the external reference voltage meets the 2.5 V ±1% specification for optimal performance.
Part Context
This part belongs to the AD7904/AD7914/AD7924 family of high-speed, low-power ADCs. The family shares identical pinouts and functional blocks, differing primarily in resolution (8-bit, 10-bit, and 12-bit respectively). The BRU suffix indicates a tube package variant within the broader series.
Replacement Considerations
The AD7904BRUZ is a direct equivalent with RoHS compliance. For higher resolution needs, consider the AD7914 (10-bit) or AD7924 (12-bit). Automotive qualified variants include the AD7904WYRUZ.
