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AD7845

Features: 12-Bit CMOS MDAC with Output Amplifier4-Quadrant MultiplicationGuaranteed Monotonic (TMIN to TMAX)Space-Saving 0.3 DIPs and 24- or 28-Terminal SurfaceMount PackagesApplication Resistors On Chip for Gain Ranging, etc.Low Power LC2MOSApplicationAutomatic Test EquipmentDigital AttenuatorsP...

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SeekIC No. : 004271016 Detail

AD7845: Features: 12-Bit CMOS MDAC with Output Amplifier4-Quadrant MultiplicationGuaranteed Monotonic (TMIN to TMAX)Space-Saving 0.3 DIPs and 24- or 28-Terminal SurfaceMount PackagesApplication Resistors O...

AD7845 Data Sheet

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Part Number:
AD7845
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

12-Bit CMOS MDAC with Output Amplifier
4-Quadrant Multiplication
Guaranteed Monotonic (TMIN to TMAX)
Space-Saving 0.3" DIPs and 24- or 28-Terminal Surface
Mount Packages
Application Resistors On Chip for Gain Ranging, etc.
Low Power LC2MOS


Application

Automatic Test Equipment
Digital Attenuators
Programmable Power Supplies
Programmable Gain Amplifiers
Digital-to-420 mA Converters


Pinout

Connection Diagram


Specifications

(TA = +25°C unless otherwise stated)
VDD to DGND . . . . . . . . . . . . . . . . . . .. . . . .0.3 V to +17 V
VSS to DGND . . . . . . . . . . . . . . . . . . . . .. . .+0.3 V to 17 V
VREF to AGND . . . . . . . . . . . . . . . .VDD + 0.3 V, VSS 0.3 V
VRFB to AGND . . . . . . . . . . . . . . . .VDD + 0.3 V, VSS 0.3 V
VRA to AGND . . . . . . . . . . . . . .. . .VDD + 0.3 V, VSS 0.3 V
VRB to AGND . . . . . . . . . . . . . .. . .VDD + 0.3 V, VSS 0.3 V
VRC to AGND . . . . . . . . . . . . . .. . .VDD + 0.3 V, VSS 0.3 V
VOUT to AGND2 . . . . . . . . . . . . .. .VDD + 0.3 V, VSS 0.3 V
AGND to DGND . . . . . . . . . . . . . . . . . . . .. . . . . 0.3 V, VDD
Digital Input Voltage to DGND . . . . . 0.3 V to VDD + 0.3 V
Power Dissipation (Any Package)
To +75°C . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . 650 mW
Derates above +75°C . . . . . . . . . . . . . . . . . . . 10 mW/°C
Operating Temperature Range
Commercial (J, K Versions) . . . . . . . . . . . . . 0°C to +70°C
Industrial (A, B Versions) . . . . . . . . . . .. 40°C to +85°C
Extended (S, T Versions) . . . . . . . . . .. 55°C to +125°C
Storage Temperature Range . . . . . . .. 65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . +300°C


Description

The AD7845 is the industry's first 4-quadrant multiplying D/A converter with an on-chip amplifier. It is fabricated on the LC2MOS process, which allows precision linear components and digital circuitry to be implemented on the same chip.

The 12 data inputs drive latches which are controlled by standard CS and WR signals, making microprocessor interfacing simple. For stand-alone operation, the CS and WR inputs can be tied to ground, making all latches transparent. All digital inputs are TTL and 5 V CMOS compatible.

The output amplifier can supply ±10 V into a 2 kW load. It is internally compensated, and its input offset voltage is low due to laser trimming at wafer level. For normal operation, RFB is tied to VOUT, but the user may alternatively choose RA, RB or RC to scale the output voltage range.




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