Monolithic 16-Bit a DACPORT AD669 FUNCTIONAL BLOCK DIAGRAM FEATURES Complete 16-Bit D/A Function On-Chip Output Amplifier (MSB) (LSB) DB15 DB0 High Stability Buried Zener Reference 7 22 Monolithic BiMOS II Construction 61 LSB Integral Linearity Error 6 CS 16-BIT LATCH 10k 15-Bit Monotonic over Temperature SPAN/ 26 L1 5 BIP OFF Microprocessor Compatible 10.05k 16-Bit Parallel Input 23 16-BIT LATCH LDAC Double-Buffered Latches 10k Fast 40 ns Write Pulse 27 16-BIT DAC REF IN AMP 25 V OUT Unipolar or Bipolar Output Low Glitch: 15 nV-s 28 24 10V REF AGND REF OUT AD669 Low THD+N: 0.009% MIL-STD-883 Compliant Versions Available 1423 V +V +V DGND EE CC LL GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD669 DACPORT is a complete 16-bit monolithic D/A 1. The AD669 is a complete voltage output 16-bit DAC with converter with an on-board reference and output amplifier. It is voltage reference and digital latches on a single IC chip. manufactured on Analog Devices BiMOS II process. This pro- 2. The internal buried Zener reference is laser trimmed to cess allows the fabrication of low power CMOS logic functions 10.000 volts with a 0.2% maximum error. The reference on the same chip as high precision bipolar linear circuitry. The voltage is also available for external applications. AD669 chip includes current switches, decoding logic, an output 3. The AD669 is both dc and ac specified. DC specs include amplifier, a buried Zener reference and double-buffered latches. 1 LSB INL error and 1 LSB DNL error. AC specs include The AD669s architecture insures 15-bit monotonicity over 0.009% THD+ N and 83 dB SNR. The ac specifications temperature. Integral nonlinearity is maintained at 0.003%, make the AD669 suitable for signal generation applications. while differential nonlinearity is 0.003% max. The on-chip 4. The double-buffered latches on the AD669 eliminate data output amplifier provides a voltage output settling time of 10 s skew errors while allowing simultaneous updating of DACs in to within 1/2 LSB for a full-scale step. multi-DAC systems. Data is loaded into the AD669 in a parallel 16-bit format. The 5. The output range is a pin-programmable unipolar 0 V to double-buffered latch structure eliminates data skew errors and +10 V or bipolar 10 V to +10 V output. No external compo- provides for simultaneous updating of DACs in a multi-DAC nents are necessary to set the desired output range. system. Three TTL/LSTTL/5 V CMOS compatible signals con- trol the latches: CS, L1 and LDAC. 6. The AD669 is available in versions compliant with MIL- STD-883. Refer to the Analog Devices Military Products The output range of the AD669 is pin programmable and can Databook or current AD669/883B data sheet for detailed be set to provide a unipolar output range of 0 V to +10 V or a specifications. bipolar output range of 10 V to +10 V. The AD669 is available in seven grades: AN and BN versions are specified from 40C to +85C and are packaged in a 28-pin plastic DIP. The AR and BR versions are specified for 40C to +85C operation and are packaged in a 28-pin SOIC. The SQ version is specified from 55C to +125C and is packaged in a hermetic 28-pin cerdip package. The AD669 is also available compliant to MIL-STD-883. Refer to the AD669/883B data sheet for specifications and test conditions. DACPORT is a registered trademark of Analog Devices, Inc. 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 617/329-4700 Fax: 617/326-8703( T = +258C, V = +15 V, V = 15 V, V = +5 V, unless otherwise noted) AD669SPECIFICATIONS A CC EE LL Model AD669AN/AR AD669AQ/SQ AD669BN/BQ/BR Min Typ Max Min Typ Max Min Typ Max Units RESOLUTION 16 16 16 Bits DIGITAL INPUTS (T to T ) MIN MAX V (Logic 1 ) 2.0 5.5 * * * * Volts IH V (Logic 0 ) 0 0.8 * * * * Volts IL I (V = 5.5 V) 610 **A IH IH I (V = 0 V) 610 **A IL IL 1 TRANSFER FUNCTION CHARACTERISTICS Integral Nonlinearity 62 * 61 LSB T to T 64 * 62 LSB MIN MAX Differential Nonlinearity 62 * 61 LSB T to T 64 * 62 LSB MIN MAX Monotonicity Over Temperature 14 14 15 Bits 2, 5 Gain Error 60.15 60.10 60.10 % of FSR 2 Gain Drift (T to T ) 25 15 15 ppm/C MIN MAX Unipolar Offset 65 65 62.5 mV Unipolar Offset Drift (T to T ) 533 ppm/C MIN MAX Bipolar Zero Error 615 615 610 mV Bipolar Zero Error Drift (T to T ) 12 10 5 ppm/C MIN MAX REFERENCE INPUT Input Resistance 7 10 13 ****** k Bipolar Offset Input Resistance 7 10 13 ****** k REFERENCE OUTPUT Voltage 9.98 10.00 10.02****** Volts Drift 25 15 15 ppm/C 3 External Current 2 4 ** ** mA Capacitive Load 1000 * * pF Short Circuit Current 25 * * mA OUTPUT CHARACTERISTICS Output Voltage Range Unipolar Configuration 0 +10 * * * * Volts Bipolar Configuration 10 +10 * * * * Volts Output Current 5 * * mA Capacitive Load 1000 * * pF Short Circuit Current 25 * * mA POWER SUPPLIES Voltage 4 V +13.5 +16.5 * * * * Volts CC 4 V 13.5 16.5 * * * * Volts EE V +4.5 +5.5 * * * * Volts LL Current (No Load) I +12 +18 ** ** mA CC I 12 18 ** ** mA EE I LL V , V = 5, 0 V 0.3 2 ** ** mA IH IL V , V = 2.4, 0.4 V 3 7.5 ** ** mA IH IL Power Supply Sensitivity 1 3 * * * * ppm/% Power Dissipation (Static, No Load) 365 625 * * mW TEMPERATURE RANGE Specified Performance (A, B) 40 +85 40 +85 40 +85 C Specified Performance (S) 55 +125 C NOTES 1 For 16-bit resolution, 1 LSB = 0.0015% of FSR = 15 ppm of FSR. For 15-bit resolution, 1 LSB = 0.003% of FSR = 30 ppm of FSR. For 14-bit resolution 1 LSB = 0.006% of FSR = 60 ppm of FSR. FSR stands for Full-Scale Range and is 10 V for a 0 V to + 10 V span and 20 V for a 10 V to +10 V span. 2 Gain error and gain drift measured using the internal reference. Gain drift is primarily reference related. See the Using the AD669 with the AD688 Reference section for further information. 3 External current is defined as the current available in addition to that supplied to REF IN and SPAN/BIPOLAR OFFSET on the AD669. 4 Operation on 12 V supplies is possible using an external reference like the AD586 and reducing the output range. Refer to the Internal/External Reference Use section. 5 Measured with fixed 50 resistors. Eliminating these resistors increases the gain error by 0.25% of FSR (Unipolar mode) or 0.50% of FSR (Bipolar mode). Refer to the Analog Circuit Connections section. *Same as AD669AN/AR specification. Specifications subject to change without notice. Specifications in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All min and max specifica- tions are guaranteed. Those shown in boldface are tested on all production units. 2 REV. A