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AD7928BRUZ-REEL
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Product Detailed Parameters
- Description：IC ADC 12BIT SAR 20TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：12
- Sampling Rate (Per Second)：1M
- Number of Inputs：8
- 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：20-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-TSSOP
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD7928BRUZ-REEL is a 12-bit, 8-channel successive approximation analog-to-digital converter (ADC) from Analog Devices. It operates on a single 2.7 V to 5.25 V supply with a maximum throughput rate of 1 MSPS. The device features an internal track-and-hold amplifier handling input frequencies exceeding 8 MHz and supports SPI/QSPI/MICROWIRE/DSP serial interfaces. Key electrical parameters include a minimum Signal-to-Noise Ratio (SNR) of 70 dB at 50 kHz input frequency, ±1 LSB maximum Integral Nonlinearity (INL), and ±1.5 LSB maximum Differential Nonlinearity (DNL). Power consumption reaches 13.5 mW max at 5 V and 6.0 mW max at 3 V during operation, dropping to 0.5 μA in full shutdown mode.
Feature Summary
- Eight single-ended analog inputs managed by a programmable channel sequencer for automated cyclic conversion.
- Flexible power management with auto-shutdown and full-shutdown modes to minimize current draw at lower throughput rates.
- VDRIVE function allows the serial interface logic levels to operate independently of the analog supply voltage.
- Zero pipeline delay architecture ensures immediate data availability following the conversion initiation.
Applications
- Industrial process control systems requiring multi-channel signal acquisition.
- Data acquisition modules for monitoring sensor arrays.
- Automotive electronic control units (ECUs) utilizing qualified components.
- Battery-powered instrumentation benefiting from low-power operational modes.
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel specifications. Ensure compatibility with automotive qualification requirements if applicable to the target application environment. Cross-reference the datasheet revision to validate performance parameters before finalizing procurement decisions.
Selection Notes
Select this component when high-speed, multi-channel sampling is required within a low-power constraint. The 12-bit resolution suits applications demanding precise DC accuracy alongside dynamic performance. Consider the external reference requirement and the need for a microprocessor or DSP capable of generating the necessary serial clock signals for optimal system integration.
Part Context
This part belongs to the AD7908/AD7918/AD7928 family, differentiated primarily by resolution: 8-bit, 10-bit, and 12-bit respectively. All members share identical pinouts, serial interface protocols, and mechanical dimensions. The BRUZ suffix indicates a B-grade temperature range (-40°C to +85°C) housed in a 20-lead TSSOP package, supplied in reel format for surface-mount assembly.
Replacement Considerations
The AD7918BRUZ-REEL and AD7908BRUZ-REEL are direct pin-compatible alternatives offering 10-bit and 8-bit resolutions respectively. These substitutes maintain the same package, interface, and power characteristics while providing lower resolution options for cost-sensitive designs.
