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MFG:ADI D/C:09
Part Number: AD7111A
MFG: ADI
D/C: 09
Description: The LOGDAC AD7111/AD7111A are monolithic multiplying D/A converters featuring wide dynamic range in a small pack- age. ...
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AD7111A
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DataSheet
General Description
AD7111A General Description
The LOGDAC AD7111/AD7111A are monolithic multiplying D/A converters featuring wide dynamic range in a small pack- age. Both DACs can attenuate an analog input signal over the range 0 dB to 88.5 dB in 0.375 dB steps. They are available in 16-pin DIPs and SOIC packages. The AD7111 is also available
in a 20-terminal LCCC package. The degree of attenuation across the DAC is determined by an 8-bit word applied to the onboard decode logic. This 8-bit word is decoded into a 17-bit word which is then applied to a 17-bit R-2R ladder. The very fine step resolution, which is available over the entire dynamic range, is due to the use of this 17-bit DAC.
The AD7111/AD7111A are fabricated in Linear Compatible CMOS (LC2 MOS), an advanced, mixed technology process that combines precision bipolar circuits with low power CMOS logic.
AD7111A Maximum Ratings
VDD (to DGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7 V
VIN (to AGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 V
Digital Input Voltage to DGND . . . . . 0.3 V to VDD + 0.3 V
IOUT to AGND . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to VDD
VRFB to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VDD
DGND to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VDD
Power Dissipation, DIP . . . . . . . . . . . . . . . . . . . . . . . . . 1 W
JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . 117°C/W
Lead Temperature (Soldering, 10 secs) . . . . . . . . . +300°C
Power Dissipation, SOIC . . . . . . . . . . . . . . . . . . . . . . . . .1 W
JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 75°C/W
Lead Temperature (Soldering)
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
VIN (to AGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 V
Digital Input Voltage to DGND . . . . . 0.3 V to VDD + 0.3 V
IOUT to AGND . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to VDD
VRFB to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VDD
DGND to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VDD
Power Dissipation, DIP . . . . . . . . . . . . . . . . . . . . . . . . . 1 W
JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . 117°C/W
Lead Temperature (Soldering, 10 secs) . . . . . . . . . +300°C
Power Dissipation, SOIC . . . . . . . . . . . . . . . . . . . . . . . . .1 W
JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 75°C/W
Lead Temperature (Soldering)
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
AD7111A Features
Dynamic Range: 88.5 dB
Resolution: 0.375 dB
On-Chip Data Latches
+5 V Operation
AD7111A Pin Compatible with AD7524
Low Power
Resolution: 0.375 dB
On-Chip Data Latches
+5 V Operation
AD7111A Pin Compatible with AD7524
Low Power
AD7111A Typical Application
Audio Attenuators
Sonar Systems
Function Generators
Digitally Controlled AGC System
Sonar Systems
Function Generators
Digitally Controlled AGC System
AD7111A Connection Diagram
AD7111A
PDF/DataSheet Download
- Datasheet: AD7111A
- File Size: 179697 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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