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AD5628ARUZ-2 データシート(PDF) 1 Page - Analog Devices |
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AD5628ARUZ-2 データシート(HTML) 1 Page - Analog Devices |
1 / 24 page Octal, 12-14-16 Bit Dac with 10ppm/°C Max On-Chip Reference in 14-Lead TSSOP Preliminary Technical Data AD5628/AD5648/AD5668 FEATURES Low Power Smallest Pin compatible Octal DACs AD5668: 16 Bits AD5648: 14 Bits AD5628: 12 Bits 12-Bit Accuracy Guaranteed 14/16-Lead TSSOP Package On-chip 1.25/2.5V, 10ppm/°C Reference Power-Down to 200 nA @ 5V, 50 nA @ 3V 3V/5V Power Supply Guaranteed Monotonic by Design Power-On-Reset to Zero/Midscale Three Power-Down Functions Hardware /LDAC and /CLR functions Rail-to-Rail Operation Temperature Range -40°C to +125°C APPLICATIONS ProcessControl Data Acquisition Systems Portable Battery Powered Instruments Digital Gain and Offset Adjustment Programmable Voltage and Current Sources Programmable Attenuators INTERFACE LOGIC INPUT REGISTER INPUT REGISTER INPUT REGIS- TER INPUT REGISTER INPUT REGISTER INPUT REGISTER INPUT REGISTER INPUT REGISTER DAC REGISTER DAC REGISTER DAC REGISTER DAC REGISTER DAC REGISTER DAC REGISTER DAC REGISTER DAC REGISTER STRING DAC C STRING DAC A STRING DAC B STRING DAC D STRING DAC E STRING DAC F STRING DAC G STRING DAC H BUFFER BUFFER BUFFER BUFFER BUFFER BUFFER BUFFER BUFFER DIN LDAC POWER-DOWN LOGIC GND VOUTB VOUTC VOUTD VOUTE VOUTG VOUTH VOUTF VDD POWER-ON RESET LDA C* VOUTA VREF SYNC SCLK AD5628/AD5648/AD5668 CLR* *RU-16 PACKAGE ONLY 1.25/2.5V Ref Figure 1. Functional Block Diagram GENERAL DESCRIPTION The AD5628/48/68 family of devices are low power, octal, 12- 14-16-bit buffered voltage-out DACs. All devices operate from a single +2.7V to +5.5V, and are guaranteed monotonic by design. The AD5628/48/68 have an on-chip reference with an internal gain of two. The AD56x8-1 has a 1.25V 10ppm/°C max reference and the AD56x8-2,-3 have a 2.5V 10ppm/°C max reference. The on-board reference is off at power-up allowing the use of an external reference. The internal reference is turned on by writing to the DAC. The part incorporates a power-on-reset circuit that ensures that the DAC output powers up to zero volts (AD56x8-1,-2/) or midscale (AD5668- 3) and remains there until a valid write takes place. The part contains a power-down feature that reduces the current consumption of the device to 200nA at 5V and provides software selectable output loads while in power-down mode for any or all DACs channels. The outputs of all DACs may be updated simultaneously using the /LDAC function, with the added functionality of selecting through software any number of DAC channels to synchronize. There is also an asynchronous active low /CLR that clears all DACs to a software selectable code - 0 V, midscale or fullscale . The AD5628/48/68 utilizes a versatile three-wire serial interface that operates at clock rates up to 50 MHz and is compatible with standard SPI™, QSPI™, MICROWIRE™ and DSP interface standards. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. PRODUCT HIGHLIGHTS 1. Octal 12/14/16-Bit DAC; 12-Bit Accuracy Guaranteed. 2. On-chip 1.25/2.5V, 10ppm/°C max Reference. 3. Available in 14/16-lead TSSOP package. 4. Power-On-Reset to Zero volts or Midscale. 5. Power-down capability. When powered down, the DAC typically consumes 50nA at 3V and 200nA at 5V. Rev. PrA 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 that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. |
同様の部品番号 - AD5628ARUZ-2 |
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同様の説明 - AD5628ARUZ-2 |
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