AD5645RBRUZ-REEL7

四， 12位/ 14位/ 16位nanoDACs用5ppm的/ ΣC片上参考， I2C接口 Quad, 12-/14-/16-Bit nanoDACs with 5ppm/∑C On-chip Ref, I2C Interface

Product Details

The AD5625R/AD5645R/AD5665R and AD5625/AD5665 members of the nanoDAC® family are low power, quad, 12-/ 14-/16-bit, buffered voltage-out DACs with/without an 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 I2 C-compatible serial interface.

The AD5625R/AD5645R/AD5665R have an on-chip reference. The LFCSP versions of the AD5625R/AD5645R/AD5665R have a 1.25 V or 2.5 V, 10 ppm/°C reference, giving a full-scale output range of 2.5 V or 5 V; the TSSOP versions of the AD5625R/AD5645R/AD5665R have a 2.5 V, 5 ppm/°C reference, giving a full-scale output range of 5 V. The WLCSP has a 1.25 V reference. 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 AD5625/AD5665 require an external reference voltage to set the output range of the DAC.

The device incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V POR = GND or midscale POR = VDD and remains there until a valid write occurs. The on-chip precision output amplifier enables rail-to-rail output swing.

The AD5625R/AD5645R/AD5665R and AD5625/AD5665 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, quad nanoDACs

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AD5625R/AD5645R/AD5665R

12-/14-/16-bit nanoDACs

On-chip, 2.5 V, 5 ppm/°C reference in TSSOP

On-chip, 2.5 V, 10 ppm/°C reference in LFCSP

On-chip, 1.25 V, 10 ppm/°C reference in LFCSP

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AD5625/AD5665

12-/16-bit nanoDACs

External reference only

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3 mm × 3 mm, 10-lead LFCSP; 14-lead TSSOP; and 1.665 mm × 2.245 mm, 12-ball WLCSP

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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/midscale

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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