The AD7845 is the industry's first 4-quadrant multiplying D/A converter with an on-chip amplifier. It is fabricated on the LC 2MOS 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 2k(ohm) 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.
Features and Benefits
| Digital to Analog Converters |
| Document | note |
| AD7845: LC2MOS Complete 12-Bit Multiplying DAC Data Sheet (Rev. B) | PDF 193 kB |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD7845AQ Production | CERDIP GLASS SEAL | OTH 15 | -40 to 85C | 10.77 | 10.77 | N |
| AD7845ARZ Production | 24 ld SOIC - Wide | OTH 31 | -40 to 85C | 11.19 | 9.51 | Y |
| AD7845BQ Production | CERDIP GLASS SEAL | OTH 15 | -40 to 85C | 13.8 | 13.8 | N |
| AD7845BRZ Production | 24 ld SOIC - Wide | OTH 31 | -40 to 85C | 15.83 | 13.29 | Y |
| AD7845JNZ Production | 24 ld PDIP | OTH 15 | 0 to 70C | 9.37 | 7.88 | Y |
| AD7845JP-REEL Last Time Buy | PLCC:PLASTIC LEAD CHIP CAR | REEL 750 | 0 to 70C | 0 | 7.33 | N |
| AD7845JPZ Production | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | 0 to 70C | 9.99 | 9.85 | Y |
| AD7845JPZ-REEL Production | PLCC:PLASTIC LEAD CHIP CAR | REEL 750 | 0 to 70C | 0 | 7.61 | Y |
| AD7845JR Production | 24 ld SOIC - Wide | OTH 31 | 0 to 70C | 9.11 | 7.73 | N |
| AD7845JRZ Production | 24 ld SOIC - Wide | OTH 31 | 0 to 70C | 8.28 | 6.95 | Y |
| AD7845JRZ-REEL Production | 24 ld SOIC - Wide | REEL 1000 | 0 to 70C | 0 | 6.95 | Y |
| AD7845KNZ Last Time Buy | 24 ld PDIP | OTH 15 | 0 to 70C | 11.98 | 11.98 | Y |
| AD7845KPZ Production | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | 0 to 70C | 13.45 | 13.27 | Y |
| AD7845KRZ Production | 24 ld SOIC - Wide | OTH 31 | 0 to 70C | 11.68 | 9.8 | Y |
| AD7845KRZ-REEL Production | 24 ld SOIC - Wide | REEL 1000 | 0 to 70C | 0 | 9.8 | Y |
| AD7845SE/883B Production | LCC:CER LEADLESS CHIP CARR | OTH 42 | -55 to 125C | 66.56 | 51.38 | N |
| AD7845SQ Production | CERDIP GLASS SEAL | OTH 15 | -55 to 125C | 30.7 | 30.7 | N |
| AD7845SQ/883B Production | CERDIP GLASS SEAL | OTH 15 | -55 to 125C | 39.87 | 35.91 | N |
| AD7845TQ Production | CERDIP GLASS SEAL | OTH 15 | -55 to 125C | 64 | 52.5 | N |
| AD7845TQ/883B Production | CERDIP GLASS SEAL | OTH 15 | -55 to 125C | 66.86 | 61.74 | N |
