双通道， 12位/ 14位/ 16位nanoDACs® 5 PPM / ° C片参考， I 2 C接口 Dual, 12-/14-/16-Bit nanoDACs® with 5 ppm/°C On-Chip Reference, I2C® Interface
Product Details
The /AD5647R/AD5667R, AD5627/AD5667 members of the _nano_DAC family are low power, dual, 12-, 14-, 16-bit buffered voltage-out DACs with/without on-chip reference. All devices operate from a single 2.7 V to 5.5 V supply, are guaranteed monotonic by design, and have an I2C-compatible serial interface.
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 have an on-chip reference. The AD5627RBCPZ, AD5647RBCPZ, and AD5667RBCPZ have a 1.25 V, 5 ppm/°C reference, giving a full-scale output range of 2.5 V; the AD5627RBRMZ and AD5667RBRMZ have a 2.5 V, 5 ppm/°C reference, giving a full-scale output range of 5 V. The on-chip reference is off at power-up, allowing the use of an external reference. The internal reference is enabled via a software write. The AD5667 and AD5627 require an external reference voltage to set the output range of the DAC.
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 incorporate a power-on reset circuit that ensures the DAC output powers up to 0 V, and remains there until a valid write takes place.
The device contains a per-channel power-down feature that reduces the current consumption of the device to 480 nA at 5 V and provides software-selectable output loads while in power-down mode. The low power consumption of this device in normal operation makes it ideally suited to portable battery-operated equipment. The on-chip precision output amplifier enables rail-to-rail output swing.
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 use a 2-wire I2C-compatible serial interface that operates in standard 100 kHz, fast 400 kHz, and high speed 3.4 MHz modes.
**Applications**
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- Process control
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- Data acquisition systems
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- Portable battery-powered instruments
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- Digital gain and offset adjustment
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- Programmable voltage and current sources
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- Programmable attenuators
### Features and Benefits
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- Low power, smallest pin-compatible, dual _nano_DACs
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- AD5627R/AD5647R/AD5667R
12-/14-/16-bit
On-chip 1.25 V/2.5 V, 5 ppm/°C reference
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- AD5627/AD5667
12-/16-bit
External reference only
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- 3 mm x 3 mm LFCSP and 10-lead MSOP
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- 2.7 V to 5.5 V power supply
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- Guaranteed monotonic by design
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- Power-on reset to zero scale
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- Per channel power-down
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- Hardware LDAC and CLR functions
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- I2C-compatible serial interface supports standard 100 kHz, fast 400 kHz, and high speed 3.4 MHz modes
