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ADDAC80 Datenblatt(PDF) 1 Page - Analog Devices |
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ADDAC80 Datenblatt(HTML) 1 Page - Analog Devices |
1 / 16 page REV. B 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. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a ADDAC80/ADDAC85/ADDAC87 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 © Analog Devices, Inc., 2002 Complete Low Cost 12-Bit D/A Converters FUNCTIONAL BLOCK DIAGRAM *NC = CBI VERSIONS 5V – CCD VERSIONS (MSB) BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT 9 BIT 10 BIT 11 (LSB) BIT 12 VREF OUT GAIN ADJUST +VS COMMON SUMMING JUNCTION 20V RANGE 10V RANGE BIPOLAR OFFSET REF INPUT VOUT –VS NC/+VL* 12-BIT RESISTOR LADDER NETWORK AND CURRENT SWITCHES REF CONTROL CIRCUIT 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 6.3k 5k 5k ADDAC80 + – *NC = CBI VERSIONS 5V – CCD VERSIONS (MSB) BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT 9 BIT 10 BIT 11 (LSB) BIT 12 VREF OUT GAIN ADJUST +VS COMMON SCALING NETWORK SCALING NETWORK SCALING NETWORK BIPOLAR OFFSET REF INPUT IOUT –VS NC/+VL* 12-BIT RESISTOR LADDER NETWORK AND CURRENT SWITCHES REF CONTROL CIRCUIT 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 6.3k 2k 5k 5k FEATURES Single Chip Construction On-Board Output Amplifier Low Power Dissipation: 300 mW Monotonicity Guaranteed over Temperature Guaranteed for Operation with 12 V Supplies Improved Replacement for Standard DAC80, DAC800 Hl-5680 High Stability, High Current Output Buried Zener Reference Laser Trimmed to High Accuracy 1/2 LSB Max Nonlinearity Low Cost Plastic Packaging PRODUCT DESCRIPTION The ADDAC80 Series is a family of low cost 12-bit digital-to- analog converters with both a high stability voltage reference and output amplifier combined on a single monolithic chip. The ADDAC80 Series is recommended for all low cost 12-bit D/A converter applications where reliability and cost are of paramount importance. Advanced circuit design and precision processing techniques result in significant performance advantages over conventional DAC80 devices. Innovative circuit design reduces the total power consumption to 300 mW, which not only improves reli- ability, but also improves long term stability. The ADDAC80 incorporates a fully differential, nonsaturating precision current switching cell structure which provides greatly increased immunity to supply voltage variation. This same struc- ture also reduces nonlinearities due to thermal transients as the various bits are switched; nearly all critical components operate at constant power dissipation. High stability, SiCr thin film resistors are trimmed with a fine resolution laser, resulting in lower differential nonlinearity errors. A low noise, high stability, subsurface Zener diode is used to produce a reference voltage with excellent long term stability, high external current capabil- ity and temperature drift characteristics which challenge the best discrete Zener references. The ADDAC80 Series is available in three performance grades and three package types. The ADDAC80 is specified for use over the 0 °C to 70°C temperature range and is available in both plastic and ceramic DIP packages. The ADDAC85 and ADDAC87 are available in hermetically sealed ceramic packages and are specified for the –25 °C to +85°C and –55°C to +125°C temperature ranges. PRODUCT HIGHLIGHTS 1. The ADDAC80 series of D/A converters directly replaces all other devices of this type with significant increases in performance. 2. Single chip construction and low power consumption pro- vides the optimum choice for applications where low cost and high reliability are major considerations. 3. The high speed output amplifier has been designed to settle within 1/2 LSB for a 10 V full scale transition in 2.0 µs, when properly compensated. 4. The precision buried Zener reference can supply up to 2.5 mA for use elsewhere in the application. 5. The low TC binary ladder guarantees that all units are mono- tonic over the specified temperature range. 6. System performance upgrading is possible without redesign. |
Ähnliche Teilenummer - ADDAC80_15 |
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Ähnliche Beschreibung - ADDAC80_15 |
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