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AD7801BRZ-REEL7
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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 20SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：8
- Number of D/A Converters：1
- Settling Time：2µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：Parallel
- Reference Type：External
- Voltage - Supply, Analog：2.7V ~ 5.5V
- Voltage - Supply, Digital：2.7V ~ 5.5V
- INL/DNL (LSB)：±1 (Max), ±1 (Max)
- Architecture：Current Source
- Operating Temperature：-40°C ~ 105°C
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SOIC
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The AD7801BRZ-REEL7 is a single-channel, 8-bit voltage output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It operates from a single +2.7 V to +5.5 V supply and features an on-chip precision output buffer capable of rail-to-rail swing. The device utilizes a parallel microprocessor and DSP-compatible interface with double-buffered logic for synchronous updates. Key specifications include a maximum settling time of 2 µs, ±1 LSB relative accuracy, and low power consumption of 1.75 mA max at 3.3 V. It supports internal or external reference selection and includes a power-down mode reducing current to less than 1 µA.
Feature Summary
- Single 8-bit resolution with rail-to-rail voltage output capability
- Parallel interface compatible with standard microprocessors and DSPs
- Internal or external reference input via REFIN pin
- Power-down mode reduces current consumption to <1 µA
Applications
- Portable battery-powered instruments
- Digital gain and offset adjustment circuits
- Programmable voltage and current sources
- Programmable attenuators
Procurement Notes
Verify the 'R' suffix in the part number AD7801BRZ-REEL7 corresponds to the SOIC package option as defined in the ordering guide. Confirm that the reel packaging matches the REEL7 designation found in distributor listings. Ensure ESD precautions are observed during handling due to the device's sensitivity.
Selection Notes
Select this component when a low-power, single-supply DAC with rail-to-rail output is required. The internal reference simplifies design if an external precision reference is not available. Verify that the parallel interface timing requirements align with the host processor's bus speed. Consider the 20-pin SOIC package constraints for PCB layout.
Part Context
The AD7801BRZ-REEL7 belongs to the AD7801 family of 8-bit DACs. The 'B' indicates the commercial temperature range of -40°C to +105°C. The 'R' denotes the Small Outline (SOIC) package variant. The 'Z' typically signifies lead-free compliance, and 'REEL7' indicates tape-and-reel packaging for automated assembly.
Replacement Considerations
Direct replacement options within the same family include the AD7801BR (tube packaging) and AD7801BRU (TSSOP package). These variants share identical electrical specifications but differ in physical packaging and shipping format.
