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MFG:ADI D/C:09
Part Number: AD7801
MFG: ADI
D/C: 09
Description: The AD7801 is a single, 8-bit, voltage out DAC that operates from a single +2.7 V to +5.5 V supply. It...
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AD7801
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DataSheet
General Description
AD7801 General Description
The AD7801 is a single, 8-bit, voltage out DAC that operates from a single +2.7 V to +5.5 V supply. Its on-chip precision output buffer allows the DAC output to swing rail to rail. The AD7801 has a parallel microprocessor and DSP compatible interface with high speed registers and double buffered interface logic. Data is loaded to the input register on the rising edge of CS or WR.
Reference selection for the AD7801 can be either an internal reference derived from the VDD or an external reference applied at the REFIN pin. The output of the DAC can be cleared by using the asynchronous CLR input.
The low power consumption of this part makes it ideally suitedto portable battery operated equipment. The power consumption is less than 5 mW at 3.3 V, reducing to less than 3 mW in power-down mode.
The AD7801 is available in a 20-lead SOIC and a 20-lead TSSOP package.
AD7801 Maximum Ratings
VDD to GND . . . . . . . . . . . . . . . . . . . . ..... . . . 0.3 V to +7 V
Reference Input Voltage to AGND . . . .0.3 V to VDD + 0.3 V
Digital Input Voltage to DGND . . . . . . .0.3 V to VDD + 0.3 V
AGND to DGND . . . . . . . . . . . . . . . . . . .... . . 0.3 V to +0.3 V
VOUT to AGND . . . . . . . . . . . . . . . . . . ..0.3 V to VDD + 0.3 V
Operating Temperature Range
Commercial (B Version) . . . . . . . . . . . 40°C to +105°C
Storage Temperature Range . . . . . . . . . . 65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . .. . . . .+150°C
SSOP Package, Power Dissipation . . . . . . . . . . . . . . . 700 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . 143°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . .+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . .+220°C
SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 870 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . 74°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . .+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . .. . . .+220°C
Reference Input Voltage to AGND . . . .0.3 V to VDD + 0.3 V
Digital Input Voltage to DGND . . . . . . .0.3 V to VDD + 0.3 V
AGND to DGND . . . . . . . . . . . . . . . . . . .... . . 0.3 V to +0.3 V
VOUT to AGND . . . . . . . . . . . . . . . . . . ..0.3 V to VDD + 0.3 V
Operating Temperature Range
Commercial (B Version) . . . . . . . . . . . 40°C to +105°C
Storage Temperature Range . . . . . . . . . . 65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . .. . . . .+150°C
SSOP Package, Power Dissipation . . . . . . . . . . . . . . . 700 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . 143°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . .+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . .+220°C
SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 870 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . 74°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . .+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . .. . . .+220°C
AD7801 Features
·Single 8-Bit DAC
·20-Pin SOIC/TSSOP Package
·+2.7 V to +5.5 V Operation
·Internal and External Reference Capability
·DAC Power-Down Function
·Parallel Interface
·On-Chip Output Buffer Rail-to-Rail Operation
·Low Power Operation 1.75 mA max @ 3.3 V
·Power-Down to 1 mA max @ 258C
AD7801 Typical Application
·Portable Battery Powered Instruments
·Digital Gain and Offset Adjustment
·Programmable Voltage and Current Sources
·Programmable Attenuators
AD7801 Connection Diagram
AD7801
PDF/DataSheet Download
- Datasheet: AD7801
- File Size: 193588 KB
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