The AD7846 is available in 28-pin plastic, ceramic, LCCC and PLCC packages.
The AD7846 is a 16-bit DAC constructed with Analog Devices' LC2MOS process. It has VREF+ and VREF- reference inputs and an on-chip output amplifier. These can be configured to give a unipooutput range (0 V to +5 V, 0 V to +10 V) or bipolar output ranges (±5 V, ±10 V).
The DAC uses a segmented architecture. The 4 MSBs in the DAC latch select one of the segments in a 16-resistor string. Both taps of the segment are buffered by amplifiers and fed to a 12-bit DAC, which provides a further 12 bits of resolution. This architecture ensures 16-bit monotonicity. Excellent integral linearity results from tight matching between the input offset voltages of the two buffer amplifiers.
In addition to the excellent accuracy specifications, the AD7846 also offers a comprehensive microprocessor interface. There are 16 data I/O pins, plus control lines (CS, R/W, LDAC and CLR). R/W and CS allow writing to and reading from the I/O latch. This is the readback function which is useful in ATE applications. LDAC allows simultaneous updating of DACs in a multi-DAC system and the CLR line will reset the contents the DAC latch to 00 . . . 000 or 10 . . . 000 depending on the state of R/W. This means that the DAC output can be reset to 0 V in both the unipolar and bipolar configurations.
The AD7846 is available in 28-pin plastic, ceramic, LCCC and PLCC packages.
Features and Benefits
| Digital to Analog Converters |
| Document | note |
| AD7846: LC2MOS16-Bit Voltage Output DAC Data Sheet (Rev. G) | PDF 615 kB |
| AD7846: Military Data Sheet |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| 5962-89697013A Production | LCC:CER LEADLESS CHIP CARR | OTH 42 | -55 to 125C | 185.72 | 167.88 | N |
| 5962-8969701XA Production | 28 ld CerDIP | OTH 12 | -55 to 125C | 123.8 | 111.91 | N |
| AD7846AP Production | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | -40 to 85C | 46.35 | 39.39 | N |
| AD7846APZ Last Time Buy | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | -40 to 85C | 44.33 | 37.68 | Y |
| AD7846BP Production | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | -40 to 85C | 53.35 | 45.37 | N |
| AD7846BPZ Production | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | -40 to 85C | 48.6 | 41.33 | Y |
| AD7846JN Production | 28 ld PDIP (600mil) | OTH 13 | 0 to 70C | 33.1 | 29.93 | N |
| AD7846JNZ Production | 28 ld PDIP (600mil) | OTH 13 | 0 to 70C | 30.16 | 27.26 | Y |
| AD7846JP Production | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | 0 to 70C | 32.14 | 29.05 | N |
| AD7846JP-REEL Production | PLCC:PLASTIC LEAD CHIP CAR | REEL 750 | 0 to 70C | 0 | 29.05 | N |
| AD7846JPZ Production | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | 0 to 70C | 29.28 | 26.46 | Y |
| AD7846JPZ-REEL Production | PLCC:PLASTIC LEAD CHIP CAR | REEL 750 | 0 to 70C | 0 | 26.46 | Y |
| AD7846KN Last Time Buy | 28 ld PDIP (600mil) | OTH 13 | 0 to 70C | 41.82 | 37.81 | N |
| AD7846KNZ Production | 28 ld PDIP (600mil) | OTH 13 | 0 to 70C | 38.09 | 34.43 | Y |
| AD7846KP Production | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | 0 to 70C | 36.91 | 33.37 | N |
| AD7846KP-REEL Production | PLCC:PLASTIC LEAD CHIP CAR | REEL 750 | 0 to 70C | 0 | 30.39 | N |
| AD7846KPZ Production | PLCC:PLASTIC LEAD CHIP CAR | OTH 39 | 0 to 70C | 33.62 | 30.39 | Y |
| AD7846KPZ-REEL Production | PLCC:PLASTIC LEAD CHIP CAR | REEL 750 | 0 to 70C | 0 | 30.39 | Y |
