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DAC-HP Series
16-Bit, High-Performance Digital-to-Analog Converters
IN N O VA T IO N a n d E X C E L L E N C E
FEATURES
* * * * * * 16-Bit resolution 3 Output voltage ranges 15ppm/C maximum gain tempco Integral nonlinearity error 0.003%FSR, max. 14 Bits monotonic from +10C to +40C High-reliability MIL-STD-883 models available
GENERAL DESCRIPTION
The DAC-HP Series are high-resolution hybrid digital-to-analog converters with voltage outputs. The Series has 16-bit binary resolution with 0.003% integral nonlinearity. These units are self-contained, including a low-tempco Zener reference circuit and an output amplifier, in a miniature 24-pin DDIP package. The DAC-HP Series offers both unipolar and bipolar modes with outputs of 0 to +10V and 5V respectively. Devices with a bipolar output range of 10V are also available and are designated with a "-1" suffix after the model designation. Input coding is complementary binary and complementary offset binary. The DAC-HP design incorporates thin and thick-film hybrid technology. The design also includes an on-board amplifier and a precision Zener reference circuit. This eliminates code dependent ground currents by routing currents 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 stability and performance. The excellent tracking of the resistors results in tempcos for differential nonlinearity, gain and zero of 2, 15 and 5ppm/C max., respectively.
INPUT/OUTPUT CONNECTIONS
PIN 1 2 3 4 5 6 7 8 9 10 11 12 FUNCTION BIT 1 (MSB) BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT 9 BIT 10 BIT 11 BIT 12 PIN 24 23 22 21 20 19 18 17 16 15 14 13 FUNCTION REFERENCE OUT +15V SUPPLY GAIN ADJUST SUMMING JUNCTION GROUND -15V SUPPLY BIPOLAR OFFSET OUTPUT BIT 16 (LSB) BIT 15 BIT 14 BIT 13
The DAC-HP Series operates off of 15V supplies and offers models with temperature performance covering the 0 to +70C commercial or -55 to +125C military temperature ranges. High reliability MIL-STD-883 versions are also available.
BIPOLAR OFFSET 18
+15V SUPPLY 23
GROUND 20
-15V SUPPLY 19
6.4k REFERENCE 24 OUT 6.4V REFERENCE
17 OUTPUT
5k
5k
21
SUMMING JUNCTION
GAIN 22 ADJUST
REFERENCE CONTROL CIRCUIT
16-BIT D/A CONVERTER
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BITS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 MSB DIGITAL INPUTS LSB
Figure 1. Functional Block Diagram
DAC-HP16
ABSOLUTE MAXIMUM RATINGS
Positive Supply, Pin 23 Negative Supply, Pin 19 Digital Input Voltage, Pins 1-16 Output Current, Pin 17 Lead Temperature (soldering, 10s) +18V -18V +5.5V 20mA 300C
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TECHNICAL NOTES
1. It is recommended that these converters be operated with local supply bypass capacitors of 1F (tantalum type) at the +15V and -15V supply pins. The capacitors should be connected as close to the pins as possible. In highfrequency noise environments, an additional 0.01F ceramic capacitor should be used in parallel with each tantalum bypass. 2. When laying out the circuit board for this device, isolate the analog, digital and power grounds as much as possible from each other before joining them at pin 20. 3. If the reference output (pin 24) is used, it must be buffered by an operational amplifier in the noninverting mode. See Figure 2. Current drawn from pin 24 should be limited to 10A in order that the temperature coefficient of the reference circuit not be affected. This is sufficient current for the bias current requirements of most popular operational amplifier types.
FUNCTIONAL SPECIFICATIONS
(Typical at +25C and 15V supplies unless otherwise noted.) INPUTS Resolution Coding, Unipolar Output Coding, Bipolar Output Input Logic Level, Bit ON ("0") Input Logic Level, Bit OFF ("1") Logic Loading PERFORMANCE Nonlinearity Error, max. Monotonicity, +10C to +40C Gain Error, Before Trimming Zero Error, Before Trimming Gain Tempco, max. Gain Tempco, max. BGC Zero Tempco, Unipolar, max. Offset Tempco, Bipolar, max. Differential Nonlinearity Tempco, max. Settling Time, 10V Change Slew Rate Power Supply Rejection OUTPUTS Output Voltage Range, Unipolar Output Voltage Range, Bipolar Output Voltage Range, "-1" Suffix Output Current, min. Output Impedance POWER REQUIREMENTS Quiescent, All Bits High +15V, 0.5V at 20mA -15V, 0.5V at 25mA 12V operation 0C to +70C (BMC, BGC) -55C to +125C (BMM, 883) -65C to +150C 24-pin DDIP 0.22 ounces (6.3 grams) 0 to +10V 5V 10V 5mA 0.05 0.003% of FSR 14 bits 0.1% 0.1% of FSR 15ppm/C of FSR 20ppm/C of FSR 5ppm/C of FSR 8ppm/C of FSR 2ppm/C of FSR 15s 20V/s 0.003%FSR/% 16 bits Complementary binary Complementary offset binary 0V to +0.8V at -1mA +2.4V to +5.5V at +40A 1 TTL load
CALIBRATION PROCEDURE
For bipolar operation, connect Bipolar Offset (pin 18) to Summing Junction (pin 21). For unipolar operation, connect Bipolar Offset (pin 18) to Ground (pin 20). In making the following adjustments, refer to the Coding Tables and Connection Diagrams. 1. Zero Adjustment. Set the input digital code to 1111 1111 1111 1111 and adjust the ZERO ADJ. potentiometer to give 0.00000V output for unipolar operation or -FS output for bipolar operation. 2. Gain Adjustment. Set the input digital code to 0000 0000 0000 0000 and adjust the GAIN ADJ. potentiometer to give +FS - 1LSB output for either unipolar or bipolar operation.
* MAXIMUM OUTPUT CURRENT IS 10A DAC-HP16B 24 +6.4V* 0.5A 5mA EXTERNAL CIRCUITRY
PHYSICAL ENVIRONMENTAL Operating Temperature Range, Case Storage Temperature Range Package Type Weight
Figure 2. Use of Reference Output
Footnotes Drive from TTL output with only the DAC-HP as load. FSR is full-scale range and is 10V for 0 to +10V or -5V to +5V outputs, 20V for 10V output, etc For all models except DAC-HP16BGC Settling to 0.5mV 0.006%FSR/% maximum over full military temperature range for MM and 883 models. Unipolar output range for suffix "-1" models, 0 to +10V, is reached at the 1/2 scale point. Pin 17. For 12V operation, consult factory.
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1194 (U.S.A.) Tel: 508-339-3000 Fax: 508-339-6356 * For immediate assistance 800-233-2765
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DAC-HP16
CODING TABLES
Table 1. Bipolar Output -- Complementary Offset Binary INPUT CODE SCALE LSB 0000 1111 1111 1111 1111 1111 0000 1111 1111 1111 1111 1111 0000 1111 1111 1111 1110 1111 +FS - 1LSB +1/2FS 0 -1/2FS -FS + 1LSB -FS OUTPUT VOLTAGE +4.99985V +2.50000 0.00000 -2.50000 -4.99985 -5.00000V OUTPUT VOLTAGE SUFFIX "-1" +9.99969V +5.00000 0.00000 -5.00000 -9.99969 -10.00000V
MSB 0000 0011 0111 1011 1111 1111
Table 2. Unipolar Output -- Complementary Binary INPUT CODE MSB 0000 0011 0111 1011 1111 1111 0000 1111 1111 1111 1111 1111 0000 1111 1111 1111 1111 1111 LSB 0000 1111 1111 1111 1110 1111 +FS - 1LSB +3/4FS +1/2FS +1/4FS +1LSB 0 SCALE OUTPUT VOLTAGE +9.99985V +7.50000 +5.00000 +2.50000 +153V 0
CONNECTION DIAGRAMS
17 18 DAC-HP16B
OUTPUT (0 TO +10V) +15V
17 18 DAC-HP16B
OUTPUT (5V)
ZERO ADUST 2.2M
ZERO ADUST 2.2M
+15V
21 510k 22 0.01F
50k 50k GAIN ADUST -15V
21 510k 22 0.01F
50k 50k GAIN ADUST -15V
Figure 3. Unipolar Operations
Figure 4. Bipolar Operations
21 SUMMING JUNCTION 5k* FULL SCALE I OUT = 2mA I OUT 6.4k 18 BIPOLAR OFFSET 24 REFERENCE OUT 6.4V REF. 20 GROUND * 10k FOR -1 MODELS 17 OUTPUT
5k
Figure 5. Output Circuit
DAC-HP16
MECHANICAL DIMENSIONS Inches (mm)
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1.31 MAX. (33.27) Dimension Tolerances (unless otherwise indicated): 2 place decimal (.XX) 0.010 (0.254) 3 place decimal (.XXX) 0.005 (0.127) 0.80 MAX. (20.32) 1 12 Lead Material: Kovar alloy Lead Finish: 50 microinches (minimum) gold plating over 100 microinches (nominal) nickel plating
24
13
0.100 TYP. (2.540) 1.100 (27.940) 0.235 MAX. (5.969) 0.200 MAX. (5.080)
0.010 -0.001 (0.254) 0.190 MAX. (4.826) 0.018 0.002 (0.457) 0.100 (2.540) 0.040 (1.016)
+0.002
SEATING PLANE 0.025 (0.635)
0.600 0.010 (15.240)
0.100 (2.540)
ORDERING INFORMATION
MODEL NUMBER DAC-HP16BGC DAC-HP16BMC DAC-HP16BMM DAC-HPB/883 DAC-HP16BGC-1 DAC-HP16BMC-1 DAC-HP16BMM-1 DAC-HPB-1/883 OPERATING TEMP. RANGE 0 to +70C 0 to +70C -55 to +125C -55 to +125C 0 to +70C 0 to +70C -55 to +125C -55 to +125C
The MIL-STD-883 units are available under DESC Drawing Number 5962-89531. Contact DATEL for 883 product specifications.
DS-0165C 1996
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 Internet: www.datel.com Email: sales@datel.com
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444 DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01 DATEL GmbH Munchen, Germany Tel: 89-544334-0 DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025
DATEL 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. The DATEL logo is a registered DATEL, Inc. trademark.

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