Product Highlights Octal, 16-bit DAC. On-chip 1.25 V/2.5 V, 5 ppm/°C reference. Available in 14-lead/16-lead TSSOP. Power-on reset to 0 V or midscale. Power-down capability. When powered down, the DAC typically consumes 200 nA at 3 V and 400 nA at 5 V. Applications Optical transceivers Power Amp control Data acquisition systems Digital gain and offset adjustment
The AD5668 device is a low power, octal, 16-bit, buffered voltage-output DAC. The device operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design.
The AD5668 has an on-chip reference with an internal gain of 2. The AD5668-1 has an 1.25 V 5 ppm/°C reference, giving a full-scale output range of 2.5 V; the AD5668-2, -3 has a 2.5 V 5 ppm/°C reference, giving a full-scale output range of 5 V. The on-board reference is off at power-up, allowing the use of an external reference. The internal reference is enabled via a software write.
The part incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V (AD5668-1, -2) or midscale (AD5668-3) and remains powered up at this level until a valid write takes place. The part contains a power-down feature that reduces the current consumption of the device to 400 nA at 5 V and provides software-selectable output loads while in power-down mode for any or all DAC channels.
The outputs of all DACs can be updated simultaneously using the LDAC function, with the added functionality of user-selectable DAC channels to simultaneously update. There is also an asynchronous CLR that updates all DACs to a user-programmable code—zero scale, midscale, or full scale.
The AD5668 utilizes a versatile 3-wire serial interface that operates at clock rates of up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The on-chip precision output amplifier enables rail-to-rail output swing.
The AD5668-EP supports defense and aerospace applicatons (AQEC)
Features and Benefits
| Digital to Analog ConvertersIBIS Models
Reference Designs |
Document | note |
AD5628/AD5648/AD5668: Octal, 12-/14-/16-Bit SPI Voltage Output denseDAC with 5 ppm/°C On-Chip Reference Data Sheet (Rev. I) | |
AD5668-EP: Enhanced Product Data Sheet (Rev. A) | PDF 465 kB |
Document | note |
UG-155: Evaluation Board for the AD5668 Octal, 16-Bit, Serial Voltage Output DAC (Rev. A) | PDF 451.48 K |
Document | note |
Extending the denseDAC™ Multichannel D/As | PDF 1100 kB |
Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
---|---|---|---|---|---|---|
AD5668ACPZ-2-RL7 Production | 16 ld LFCSP 4x4 | REEL 1500 | -40 to 105C | 0 | 10.63 | Y |
AD5668ACPZ-3-RL7 Production | 16 ld LFCSP 4x4 | REEL 1500 | -40 to 105C | 0 | 10.63 | Y |
AD5668ARUZ-2 Production | 16 ld TSSOP | OTH 96 | -40 to 105C | 12.5 | 10.63 | Y |
AD5668ARUZ-2REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 105C | 0 | 10.63 | Y |
AD5668ARUZ-3 Production | 16 ld TSSOP | OTH 96 | -40 to 105C | 12.5 | 10.63 | Y |
AD5668ARUZ-3REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 105C | 0 | 10.63 | Y |
AD5668BCBZ-1-500R7 Contact ADI | 16 Ball WLCSP(2.605X2.605) | OTH 500 | -40 to 105C | 0 | 12.75 | Y |
AD5668BCBZ-1-RL7 Production | 16 Ball WLCSP(2.605X2.605) | REEL 3000 | -40 to 105C | 0 | 10.63 | Y |
AD5668BCBZ-3-RL7 Production | 16 Ball WLCSP(2.605X2.605) | REEL 3000 | -40 to 105C | 0 | 10.63 | Y |
AD5668BCPZ-1-RL7 Production | 16 ld LFCSP 4x4 | REEL 1500 | -40 to 105C | 0 | 12.75 | Y |
AD5668BCPZ-1500RL7 Production | 16 ld LFCSP 4x4 | OTH 500 | -40 to 105C | 0 | 12.75 | Y |
AD5668BCPZ-2-RL7 Production | 16 ld LFCSP 4x4 | REEL 1500 | -40 to 105C | 0 | 12.75 | Y |
AD5668BCPZ-2500RL7 Production | 16 ld LFCSP 4x4 | OTH 500 | -40 to 105C | 0 | 0 | Y |
AD5668BRUZ-1 Production | 16 ld TSSOP | OTH 96 | -40 to 105C | 15 | 12.75 | Y |
AD5668BRUZ-1REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 105C | 0 | 12.75 | Y |
AD5668BRUZ-2 Production | 16 ld TSSOP | OTH 96 | -40 to 105C | 15 | 12.75 | Y |
AD5668BRUZ-2REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 105C | 0 | 12.75 | Y |
AD5668BRUZ-3 Production | 16 ld TSSOP | OTH 96 | -40 to 105C | 15 | 12.75 | Y |
AD5668BRUZ-3REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 105C | 0 | 12.75 | Y |
AD5668SRU-EP-1 Production | 16 ld TSSOP | OTH 96 | -55 to 125C | 29.34 | 20.96 | N |
AD5668SRU-EP-1RL7 Production | 16 ld TSSOP | REEL 1000 | -55 to 125C | 0 | 20.96 | N |
Part Number | Description | Price | RoHS |
---|---|---|---|
EVAL-AD5668SDCZ | LFCSP Evaluation Board | 59 | Y |
EVAL-AD5668SDRZ | TSSOP Evaluation Board | 59 | Y |
EVAL-SDP-CB1Z | Evaluation Controller Board | 99 | Y |