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Part Number: AD7945

 

MFG: ADI

 

D/C: 09

Description: The AD7943, AD7945 and AD7948 are fast 12-bit multiplying DACs that operate from a single +5 V supply ...


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AD7945 General Description


The AD7943, AD7945 and AD7948 are fast 12-bit multiplying DACs that operate from a single +5 V supply (Normal Mode) and a single +3.3 V to +5 V supply (Biased Mode). The AD7943 has a serial interface, the AD7945 has a 12-bit parallel interface, and the AD7948 has an 8-bit byte interface. They will replace the industry-standard AD7543, AD7545 and AD7548 in many applications, and they offer superior speed and power consumption performance.

The AD7943 is available in 16-lead DIP, 16-lead SOP (Small Outline Package) and 20-lead SSOP (Shrink Small Outline Package).

The AD7945 is available in 20-lead DIP, 20-lead SOP and 20- lead SSOP.

The AD7948 is available in 20-lead DIP, 20-lead SOP and 20- lead SSOP.

AD7945 Maximum Ratings

(TA = +25unless otherwise noted)
VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . ..........................0.3 V to +6 V
IOUT1 to DGND . . . . . . . . . . . . . . . . . . ........................ 0.3 V to VDD + 0.3 V
IOUT2 to DGND . . . . . . . . . . . . . . . . . . . .......................0.3 V to VDD + 0.3 V
AGND to DGND . . . . . . . . . . . . . . . . . ............................0.3 V to VDD + 0.3 V
Digital Input Voltage to DGND . . . . . ............................ 0.3 V to VDD + 0.3 V
VRFB, VREF to DGND . . . . . . . . . . . . . . . . . . . . . . . . . ............................ ±15 V
Input Current to Any Pin Except Supplies2 . . . . . . . ........................... ±10 mA
Operating Temperature Range
Industrial (A, B Versions) . . . . . . . . . . . . .................................. 40to +85
Extended (T Version) . . . . . . . . . . . . . . .................................. 55to +125
Storage Temperature Range . . . . . . . . . . . ............................. 65to +150
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . ...........................+150
DIP Package, Power Dissipation . . . . . . . . . . . . . . . ............................. 670 mW
qJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . ................................ 116/W
Lead Temperature, Soldering, (10 sec) . . . . . . . . . ................................. +260
SOP Package, Power Dissipation . . . . . . . . . . . . . . . . . ...........................450 mW
qJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . .................................. 75/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . ...................................... +215
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . ...................................... +220
SSOP Package, Power Dissipation . . . . . . . . . . . . . . . . .............................875 mW
qJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . .................................... 132/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . ........................................ +215
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . ........................................ +220

NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2Transient currents of up to 100 mA will not cause SCR latch-up.

 

AD7945 Features

12-Bit Multiplying DACs Guaranteed Specifications with +3.3 V/+5 V Supply 0.5 LSBs INL and DNL Low Power: 5 mW typ Fast Interface 40 ns Strobe Pulsewidth (AD7943) 40 ns Write Pulsewidth (AD7945, AD7948) Low Glitch: 60 nV-s with Amplifier Connected Fast Settling: 600 ns to 0.01% with AD843

AD7945 datasheet

AD7945
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