AD5310| Datasheet

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+2.7 V to +5.5 V, 140 A, Rail-to-Rail Voltage Output 10-Bit DAC in a SOT-23 AD5310*
FUNCTIONAL BLOCK DIAGRAM
VDD GND POWER-ON RESET

FEATURES Single 10-Bit DAC 6-Lead SOT-23 and 8-Lead SOIC Packages Micropower Operation: 140 A @ 5 V Power-Down to 200 nA @ 5 V, 50 nA @ 3 V +2.7 V to +5.5 V Power Supply Guaranteed Monotonic by Design Reference Derived from Power Supply Power-On-Reset to Zero Volts Three Power-Down Functions Low Power Serial Interface with Schmitt-Triggered Inputs On-Chip Output Buffer Amplifier, Rail-to-Rail Operation SYNC Interrupt Facility APPLICATIONS Portable Battery Powered Instruments Digital Gain and Offset Adjustment Programmable Voltage and Current Sources Programmable Attenuators GENERAL DESCRIPTION

AD5310
REF (+) REF ( )

DAC REGISTER

10-BIT DAC

OUTPUT BUFFER

VOUT

INPUT CONTROL LOGIC

POWER-DOWN CONTROL LOGIC

RESISTOR NETWORK

SYNC

SCLK

DIN

PRODUCT HIGHLIGHTS

The AD5310 is a single, 10-bit buffered voltage out DAC that operates from a single +2.7 V to +5.5 V supply consuming 115 uA at 3 V. Its on-chip precision output amplifier allows railto-rail output swing to be achieved. The AD5310 utilizes a versatile three-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPITM, QSPITM, MICROWIRETM and DSP interface standards. The reference for AD5310 is derived from the power supply inputs and thus gives the widest dynamic output range. The part incorporates a power-on-reset circuit that ensures that the DAC output powers up to zero volts and remains there until a valid write takes place to the device. The part contains a power-down feature which reduces the current consumption of the device to 200 nA at 5 V and provides software selectable output loads while in power-down mode. The part is put into power-down mode over the serial interface. The low power consumption of this part in normal operation makes it ideally suited to p
ortable battery operated equipment. The power consumption is 0.7 mW at 5 V reducing to 1 uW in power-down mode. The AD5310 is one of a family of pin-compatible DACs. The AD5300 is the 8-bit version and the AD5320 is the 12-bit version. The AD5300/AD5310/AD5320 are available in 6-lead SOT-23 packages and 8-lead uSOIC packages.
SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corporation. *Patent pending; protected by U.S. Patent No. 5684481.

1. Available in 6-lead SOT-23 and 8-lead uSOIC packages. 2. Low power, single supply operation. This part operates from a single +2.7 V to +5.5 V supply and typically consumes 0.35 mW at 3 V and 0.7 mW at 5 V, making it ideal for battery powered applications. 3. The on-chip output buffer amplifier allows the output of the DAC to swing rail-to-rail with a slew rate of 1 V/us. 4. Reference derived from the power supply. 5. High speed serial interface with clock speeds up to 30 MHz. Designed for very low power consumption. The interface only powers up during a write cycle. 6. Power-down capability. When powered down, the DAC typically consumes 50 nA at 3 V and 200 nA at 5 V.

REV. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 Analog Devices, Inc., 1999