® DAC-HK Series ® High-Performance, 12-Bit DAC’s with Input Registers FEATURES 12-Bit resolution Integral nonlinearity error ±1/2LSB, max. Differential nonlinearity error ±3/4LSB, max. MIL-STD-883 high-reliability versions available Input register 3μs fast settling time Guaranteed monotonicity over full temperature range INPUT/OUTPUT CONNECTIONS PIN FUNCTION PIN FUNCTION 1 BIT 1 (MSB) 24 REFERENCE OUT 2 BIT 2 23 GAIN ADJUST 3 BIT 3 22 +15V SUPPLY 4 BIT 4 21 GROUND 5 BIT 5 20 SUMMING JUNCTION 6 BIT 6 19 20V RANGE 7 BIT 7 18 10V RANGE 8 BIT 8 17 BIPOLAR OFFSET 9 BIT 9 16 LOAD 10 BIT 10 15 VOLTAGE OUTPUT 11 BIT 11 14 –15V SUPPLY 12 BIT 12 (LSB) 13 +5V SUPPLY PRODUCT OVERVIEW The DAC-HK Series hybrid D/A converters are highperformance 12-bit devices with a fast settling voltage output. They incorporate a level-controlled input storage register and are specifically designed for systems applications such as data bus interfacing with computers. When the “load” input is high, data in the storage register is held, and when the load input is low, data is transferred through to the DAC. There are two basic models available by coding option: binary and two’s complement. The output voltage ranges are externally pinprogrammable and include: 0 to +5V, 0 to +10V, ±2.5V, ±5V and ±10V. The DAC-HK Series contains a precision zener reference circuit. This eliminates code-dependent ground currents by routing current from the positive supply to the internal ground node as determined by the R-2R ladder network. The internal feedback resistors for the on-board amplifier track the ladder network resistors, enhancing temperature performance. The excellent tracking of the resistors results in a differential nonlinearity tempco of ±2ppm/°C maximum. The temperature coefficient of gain is ±20ppm/°C maximum, and the tempco of zero is ±5ppm/°C maximum. BLOCK DIAGRAM GAIN ADJUST 23 REF. OUT 24 BIPOLAR OFFSET 17 +15V SUPPLY 22 –15V SUPPLY 14 +5V SUPPLY 13 19 20V RANGE 5kΩ +5V 5kΩ 18 10V RANGE D/A CONVERTER LOAD 16 REGISTER 74LS75 REGISTER 74LS75 REGISTER 74LS75 20 SUMMING JUNCTION 15 VOLTAGE OUTPUT 21 GROUND 1 2 3 4 BITS 1 2 3 4 MSB 5 6 7 8 5 6 7 8 DIGITAL INPUTS 9 10 11 12 9 10 11 12 LSB Figure 1. DAC-HK Functional Block Diagram DATEL • 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: [email protected] MDA_DAC-HK.B03 Page 1 of 5 ® DAC-HK Series ® High-Performance, 12-Bit DAC’s with Input Registers FUNCTIONAL SPECIFICATIONS (Typical at +25°C and ±15V and +5V supplies unless otherwise noted.) DESCRIPTION INPUTS Resolution Coding, Unipolar Output Coding, Bipolar Output Input Logic Level, Bit ON ("1") Input Logic Level, Bit OFF ("0") Logic Loading Load Input ➁ Load Input Loading PERFORMANCE ➃ Nonlinearity Error, max. Differential Nonlinearity Error, max. Gain Error, Before Trimming Zero Error, Before Trimming Gain Tempco, max. Zero Tempco, Unipolar, max. Offset Tempco, Bipolar, max. Diff. Nonlinearity Tempco, max. Monotonicity Settling Time, 5V Change Settling Time, 10V Change Settling Time, 20V Change Settling Time, 1LSB Change Slew Rate Power Supply Rejection OUTPUTS Output Voltage Ranges, Unipolar ➄ Output Voltage Ranges, Bipolar ➄ Output Current Output Impedance POWER REQUIREMENTS Power Supply Voltages ➅ PHYSICAL/ENVIRONMENTAL Operating Temperature Range, Case Storage Temperature Range Package Type Weight 12 bits Straight binary Offset binary, two’s complement ➀ +2.0V to +5.5V 0V to +0.8V 1 LSTTL load High (“1”) = hold data Low (“0”) = transfer data 3 LSTTL loads ±1/2LSB ±3/4LSB ±0.1% ➂ ±0.1% of FSR ➂ ±20ppm/°C ±5ppm/°C of FSR ±10ppm/°C of FSR ±2ppm/°C of FSR Guaranteed over temperature 3μs 3μs 4μs 800ns ±20V/μs ±0.002%FSR/% 0 to +5V, 0 to +10V ±2.5V ±5V ±10V ±5mA min. 0.05Ω +15V, ±0.5V at 15mA –15V, ±0.5V at 30mA +5V, ±0.25V at 65mA 0°C to +70°C (BGC/BGC-C, BMC,BMC-C) -40°C to +85°C (BME, BME-C) –55°C to +125°C (BMM, BMM-C, 883,-C/883) –65°C to +125°C 24-pin DDIP 0.22 ounces (6.3 grams) Footnotes: ABSOLUTE MAXIMUM RATINGS PARAMETERS LIMITS Positive Supply, Pin 22 +18 Negative Supply, Pin 14 –18 Logic Supply, Pin 13 +5.25 Digital Input Voltage, Pins 1–12 & 16 +5.5 Output Current, Pin 15 ±20 Lead Temperature (soldering, 10s) 300 UNITS Volts Volts Volts Volts mA °C TECHNICAL NOTES 1. It is recommended that these converters be operated with local supply bypass capacitors of 1μF (tantalum type) at the +15V, –15V and +5V supply pins. The capacitors should be connected as close to the pins as possible. In high RFI noise environments, these capacitors should be shunted with 0.01μF ceramic capacitors. 2. The analog, digital and power grounds should be separated from each other as close as possible to pin 21 where they all must come together. 3. The “load” control pin is a level-triggered input which causes the register to hold data with a high input and transfer data to the DAC with a low input. 4. A setup time of 50ns minimum must be allowed for the input data. The DAC output voltage begins to change when the register output changes. 5. If the reference output terminal (pin 24) is used, an operational amplifier in non-inverting mode should be used as a buffer. Current drawn from pin 24 should be limited to ±10μA in order not to affect the T.C. of the reference. CALIBRATION PROCEDURE Select the desired output voltage range and connect the converter as shown in the Output Range Selection Table and the Connection Diagrams. Refer to the Coding Tables. Unipolar Operation 1. Zero Adjustment. Set the input digital code to 0000 0000 0000 and adjust the ZERO ADJ. potentiometer to give 0.0000V output. 2. Gain Adjustment. Set the input digital code to 1111 1111 1111 (straight binary) and adjust the GAIN ADJ. potentiometer to give the full-scale output voltage shown in Table 1. Bipolar Operation 1. Offset Adjustment. Set the digital input code to 0000 0000 0000 (offset binary) or 1000 0000 0000 (two’s complement) and adjust the OFFSET ADJ. potentiometer to give the negative full-scale output voltage shown in Table 2. 2. Gain Adjustment. Set the digital input code to 1111 1111 1111 (offset binary) or 0111 1111 1111 (two’s complement) and adjust the GAIN ADJ. potentiometer to give the positive full-scale output voltage shown in Table 2. ➀ For two’s complement coding, order the "-2" model as described in Ordering Information. ➁ Logic levels are the same as for data inputs. ➂ Initial errors are trimmable to zero. See Connection Diagram. ➃ FSR is full scale range and is 10V for 0 to +10V output range, 20V for ±10V output range, etc. ➄ By external pin connection. ➅ For ±12V, +5V operation, contact factory. DATEL • 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: [email protected] MDA_DAC-HK.B03 Page 2 of 5 ® DAC-HK Series ® High-Performance, 12-Bit DAC’s with Input Registers 20 SUMMING JUNCTION Hold LOAD 5kΩ 5kΩ Transfer 19 20V RANGE FULL SCALE I OUT = 2mA 1 DATA IN t SETUP 50nsec min. 0 18 10V RANGE I OUT t SETUP 50nsec min. 15 VOLTAGE OUTPUT REGISTER OUTPUT TO DAC 6.3kΩ 5kΩ 17 BIPOLAR OFFSET 24 REFERENCE OUT t PHL 60nsec t PLH 60nsec 6.3V REF. ALL RISE AND FALL TIMES ≤ 10nsec 21 GROUND Figure 2. DAC-HK Timing Figure 3. Output Circuit CONNECTION DIAGRAMS LOAD LOAD BIT LSB 12 12 13 –15V 11 11 14 –15V OUT (O TO +10V) 10 10 15 9 9 16 OUT (–5 TO +5V) 8 8 17 7 7 18 6 6 19 5 5 20 4 4 21 3 3 22 2 2 23 1 1 24 BIT LSB 12 12 13 +5V 11 11 14 10 10 15 9 9 16 8 8 17 7 7 18 6 6 19 5 5 20 4 4 21 3 3 22 DATA IN MSB 2 2 23 1 1 24 1μF 1μF 2.2MΩ 2.8MΩ 1μF DATA IN 100k ZERO ADJUST 100k GAIN ADJUST 0.01μF MSB +5V 1μF 1μF 2.2MΩ 2.8MΩ 100k GAIN ADJUST 0.01μF 1μF +15V Figure 4. Unipolar Operation (0 to +10V) 100k ZERO ADJUST +15V Figure 5. Bipolar Operation (±5V) APPLICATIONS LOAD 0 DAC-HK12B 0 LOAD 1 DAC-HK12B 1 LOAD N DAC-HK12B N LOAD 0 0 1 ADDRESS DECODER ADDRESS 1 LOAD N DAC-HK12B N LSB's MSB's N N TEMPORARY STORAGE REGISTER ADDRESS DECODER DATA BUS ≥12 BITS 0 DAC-HK12B DAC-HK12B LOAD 1 0 1 LSB's MSB's LSB's MSB's LOAD HI BYTE LOAD LO BYTE 8 BIT DATA BUS STROBE ADDRESS AN A1 A0 WRITE STROBE Figure 6. Interfacing to ≥12-Bit Data Bus DATEL • 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA Figure 7. Interfacing to 8-Bit Data Bus • Tel: (508) 339-3000 • www.datel.com • e-mail: [email protected] MDA_DAC-HK.B03 Page 3 of 5 ® DAC-HK Series ® High-Performance, 12-Bit DAC’s with Input Registers CODING TABLES STRAIGHT BINARY OUTPUT RANGES LSB 0 to +10V 0 to +5V 1111 MSB 1111 1111 +9.9976 +4.9988 1100 0000 0000 +7.5000 +3.7500 1000 0000 0000 +5.0000 +2.5000 0100 0000 0000 +2.5000 +1.2500 0000 0000 0001 +0.0024 +0.0012 0000 0000 0000 0.0000 0.0000 Table 1. Unipolar Operation OFFSET BINARY MSB TWO’S COMPLEMENT OUTPUT RANGES LSB MSB LSB ±10V ±5V ±2.5V 1111 1111 1111 0111 1111 1111 +9.9951 +4.9976 +2.4988 1100 0000 0000 0100 0000 0000 +5.0000 +2.5000 +1.2500 1000 0000 0000 0000 0000 0000 0.0000 0.0000 0.0000 0100 0000 0000 1100 0000 0000 –5.0000 –2.5000 –1.2500 0000 0000 0001 1000 0000 0001 –9.9951 –4.9976 –2.4988 0000 0000 0000 1000 0000 0000 –10.0000 –5.0000 –2.5000 Table 2. Bipolar Operation RANGE CONNECT THESE PINS TOGETHER ±10V 15 & 19 17 & 20 ±5V 15 & 18 17 & 20 ±2.5V 15 & 18 17 & 20 +10V 15 & 18 17 & 21 +5V 15 & 18 17 & 21 19 & 20 19 & 20 Table 3. Output Range Selection DATEL • 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: [email protected] MDA_DAC-HK.B03 Page 4 of 5 ® DAC-HK Series ® High-Performance, 12-Bit DAC’s with Input Registers MECHANICAL DIMENSIONS (inches (mm)) 1.31 MAX. (33.27) 24 Dimension Tolerances (unless otherwise indicated): 2 place decimal (.XX) ±0.010 (±0.254) 3 place decimal (.XXX) ±0.005 (±0.127) 13 Lead Material: Kovar alloy 0.80 MAX. (20.32) 1 Lead Finish: 50 microinches (minimum) gold plating over 100 microinches (nominal) nickel plating 12 0.100 TYP. (2.540) 1.100 (27.940) 0.235 MAX. (5.969) 0.200 MAX. (5.080) +0.002 0.010 –0.001 (0.254) 0.190 MAX. (4.826) 0.100 (2.540) 0.040 (1.016) 0.018 ±0.002 (0.457) SEATING PLANE 0.025 (0.635) 0.600 ±0.010 (15.240) 0.100 (2.540) ORDERING INFORMATION MODEL NUMBER OPERATING TEMP RANGE BITS SEAL RoHS 0 to +70°C 0 to +70°C 0 to +70°C 0 to +70°C –40 to +100°C –40 to +100°C –55 to +125°C –55 to +125°C –55 to +125°C –55 to +125°C –55 to +125°C –55 to +125°C –55 to +125°C 12 12 12 12 12 12 12 12 12 12 12 12 12 Epoxy Epoxy Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic No Yes No Yes No No Yes No Yes No No Yes No 0 to +70°C 0 to +70°C 0 to +70°C 0 to +70°C –40 to +100°C –40 to +100°C –55 to +125°C –55 to +125°C –55 to +125°C –55 to +125°C –55 to +125°C –55 to +125°C –55 to +125°C –55 to +125°C 12 12 12 12 12 12 12 12 12 12 12 12 12 12 Epoxy Epoxy Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic Hermetic No Yes No Yes No No Yes No Yes No No Yes No No Binary Coding DAC-HK12BGC DAC-HK12BGC-C DAC-HK12BMC DAC-HK12BMC-C DAC-HK12BME DAC-HK12BME-C DAC-HK12BMM DAC-HK12BMM-C DAC-HK12BMC-QL DAC-HKB/883 DAC-HKB-C/883 5962-8952801XC 5962-8952801XA Two’s Complement Coding DAC-HK12BGC-2 DAC-HK12BGC-2-C DAC-HK12BMC-2 DAC-HK12BMC-2-C DAC-HK12BME-2 DAC-HK12BME-2-C DAC-HK12BMM-2 DAC-HK12BMM-2-C DAC-HK12BMM-QL DAC-HK12BMC-QL-C DAC-HKB-2/883 DAC-HKB-2-C/883 5962-8952802XC 5962-8952802XA The MIL-STD-883 units are available under DESC Drawing Number 5962-89528. Contact DATEL for 883 product specifications. DATEL 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA ITAR and ISO 9001/14001 REGISTERED . makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2013 www.datel.com • e-mail: [email protected] MDA_DAC-HK.B03 Page 5 of 5