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DAC-HZ Series
12-Bit, Industry-Standard Digital-to-Analog Converters
INNOVATION and EXCELLENCE
FEATURES
* 12-Bit binary and 3-digit BCD models * 7 Output ranges * 3s VOUT settling time 300ns IOUT settling time * Guaranteed monotonicity over full temperature range * Integral nonlinearity 1/2LSB (binary) and 1/4LSB (BCD), maximum * Differential nonlinearity 3/4LSB (binary) and 1/4LSB (BCD), maximum * High-reliability QL versions available
GENERAL DESCRIPTION
The DAC-HZ Series are high-performance, monolithic, 12-bit binary and 3-digit BCD, digital-to-analog converters. The DAC-HZ Series are complete and self-contained with a precision internal reference and fast output operational amplifier. Pin programmable output voltage and current ranges are provided for a high degree of application flexibility; the binary versions offer 5 output voltage ranges and two current ranges while the BCD models offer 3 and 1 output ranges, respectively. The DAC-HZ Series contains a precision embedded 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 temperature coefficients for differential nonlinearity, zero and gain of 2, 3 and 20ppm/C maximum, 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 (LSB) PIN 24 23 22 21 20 19 18 17 16 15 14 13 FUNCTION REFERENCE OUT GAIN ADJUST +15V SUPPLY GROUND CURRENT OUTPUT 20V RANGE 10V RANGE BIPOLAR OFFSET REFERENCE IN VOLTAGE OUTPUT -15V SUPPLY NO CONNECTION
1 2 4 8 10 20 40 80 100 200 400 800
BITS BCD BITS BINARY
MSB 1 2 3 4 5 6 7 8 9 10 11 12 LSB 1 2 3 4 5 6 7 8 9 10 11 12 5kW 19 20V RANGE (4kW , BCD) 5kW D/A CONVERTER (4kW , BCD) 18 10V RANGE
REFERENCE IN 16 6.3kW * BIPOLAR OFFSET 17
* FOR BCD MODELS,
THIS RESISTOR IS OPEN CIRCUIT.
20 CURRENT OUTPUT
15 VOLTAGE OUTPUT GAIN ADJUST 23 +6.3V REFERENCE 21 GROUND REFERENCE OUT 24
22 +15V SUPPLY
14 -15V SUPPLY
13 NO INTERNAL CONNECTION
Figure 1. Functional Block Diagram
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DAC-HZ Series
ABSOLUTE MAXIMUM RATINGS
Positive Supply, Pin 22 Negative Supply, Pin 14 Digital Input Voltage, Pins 1-12 Output Current, Pin 15 Lead Temperature (soldering, 10s) +18V -18V +5.5V 20mA 300C Footnotes FSR is full-scale range and is 10V for 0 to +10V or -5V to +5V outputs, 20V for 10V output, etc. Initial gain and offset errors are trimmable to zero. See Connection Diagrams. Current output mode. For 2.5k or 5k feedback. For 10k feedback, the settling time is 4s. For 12V operation of binary models, contact factory.
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 Voltage Output Nonlinearity Differential Nonlinearity Gain Error, Before Trimming Zero Error, Before Trimming Gain Tempco, maximum Zero Tempco, Unipolar, max. Offset Tempco, Bipolar, max. Diff. Nonlinearity Tempco, max. Monotonicity Settling Time, IOUT to 1/2LSB Settling Time, VOUT to 1/2LSB Slew Rate Power Supply Rejection OUTPUTS Output Current, Unipolar Output Current, Bipolar Compliance Voltage, IOUT Output Impedance, IOUT, Unipolar Output Impedance, IOUT, Bipolar Output Voltage Ranges, Unipolar 0 to -2mA, 20% 1mA, 20% 2.5V 2k 2k 0 to +5V 0 to +10V 2.5V 5V 10V 5mA min. 0.05 0 to -1.25mA, 10% -- -- 0 to +2.5V 0 to +5V 0 to +10V -- -- -- 1/2LSB max. 3/4LSB max 0.1% 0.1% of FSR 20ppm/C 3ppm/C of FSR 10ppm/C of FSR 2ppm/C of FSR Over oper. temp. range 300ns 3s 10V/s 0.006%FSR/%Sup. 1/4LSB max. 1/4LSB max. DAC-HZ12B DAC-HZ12D (BINARY) (BCD) 12 binary bits 3 BCD digits Comp. binary Comp. BCD Comp. off. binary -- 0V to +0.8V at -1mA +2.4V to +5.5V at +40A 1 TTL load
TECHNICAL NOTES
1. The DAC-HZ12 Series converters are designed and factory calibrated to give 1/2LSB linearity (binary version) and 1/4LSB linearity (BCD version) with respect to a straight line between end points. This means that if zero and full scale are exactly adjusted externally, the relative accuracy will be 1/2LSB (1/4LSB, BCD version) everywhere over the full output range without any additional adjustments. 2. These converters must be operated with local supply bypass capacitors from +15V to ground and -15V to ground. Tantalum type capacitors of 1F are recommended and should be mounted as close as possible to the converter. If the converters are used in a high-frequency noise environment, a 0.01F ceramic capacitor should be used across each tantalum capacitor. 3. When operating in the current output mode, the equivalent internal current source of 2mA (1.25mA, BCD) must drive both the internal source resistances and the external load resistor. A 300ns output settling time is achieved for the voltage across a 100 load resistor; for higher value resistors the settling time becomes longer due to the output capacitance of the converter. For fastest possible voltage output for a large transition, an external fast-settling amplifier such as DATEL's AM-500 should be used in the inverting mode. Settling time of less than 1s can be achieved. See application diagram.
CALIBRATION PROCEDURE
1. Select the desired output range and connect the converter as shown in the Output Range Selection tables and the connection diagrams. 2. To calibrate, refer to the coding tables. Note that complementary coding is used. 3. Zero and Offset Adjustments For unipolar operation set all digital inputs to "1" (+2.0 to +5.5V) and adjust the ZERO ADJUST potentiometer for zero output voltage or current. For bipolar operation set all digital inputs to "1" and adjust the OFFSET ADJUST potentiometer for the negative full scale (for voltage out) or positive full scale (for current out) output value shown in the coding table. 4. Gain Adjustment Set all digital inputs to "0" (0V to +0.8V) and adjust the GAIN ADJUST potentiometer for the positive full scale (for voltage out) or negative full scale (for current out) output value shown in the coding table.
Output Voltage Ranges, Bipolar
Output Current, VOUT Output Impedance, VOUT POWER REQUIREMENTS Power Supply Voltages
Power Dissipation, maximum PHYSICAL ENVIRONMENTAL Operating Temp. Ranges, Case Storage Temp. Range Thermal Impedance jc ca Package Type Weight * Specifications same as first column. -- No equivalent specifications
+15V, 0.5V at 16mA -15V, 0.5V at 20mA 12V operation 500mW 0C to +70 and -55C to +125C -65C to +150C 7.4C/W 36.6C/W 24-pin DDIP 0.22 ounces (6.3 grams)
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OUTPUT RANGE SELECTION TABLES
DAC-HZ12B Binary Output Range Selection VOUT RANGE
10V 5V 2.5V +10V +5V 1mA
BIT LSB 12 11 10 9 8 DIGITAL 7 INPUTS 6 5 4 3 2 MSB 1 12 11 10 9 8 7 6 5 4 3 2 1 13 14 15 16 17 18 19 20 21 22 23 24 2.8M +15V -15V GAIN ADJUST 10k TO 100k +15V
1F C (0.001 TO 0.01F) 1F
-15V -15V
ZERO ADJUST 10k TO 100k +15V
CONNECT THESE PINS TOGETHER
15 & 19 15 & 18 15 & 18 15 & 18 15 & 18 -- 17 & 20 17 & 20 17 & 20 17 & 21 17 & 21 17 & 20 -- -- 19 & 20 -- 19 & 20 -- 16 & 24 16 & 24 16 & 24 16 & 24 16 & 24 16 & 24
2.2M I OUT = 0 TO -2mA VOUT = 0 TO -200mV 100
DAC-HZ12D BCD Output Range Selection
+10V +5V +2.5V -1.25mA 15 & 19 15 & 18 15 & 18 -- 17 & 21 17 & 21 17 & 21 17 & 21 -- -- 19 & 20 -- 16 & 24 16 & 24 16 & 24 16 & 24
DAC-HZ12B or DAC-HZ12D (BOTTOM VIEW)
Voltage output is at pin 15; current output is at pin 20.
OUTPUT CODING TABLES
Unipolar Output, Complementary Binary BINARY INPUT CODE MSB
0000 0011 0111 1011 1111 1111
Figure 3. Unipolar Current Output Connections
UNIPOLAR OUTPUT RANGES 0 to +10V
+9.9976V +7.5000 +5.0000 +2.5000 +0.0024 0.0000
6.3k * 17 BIPOLAR OFFSET RR CURRENT OUT 20 I R EQ 21 DAC-HZ12B or DAC-HZ12D GND VOUT
LSB
0000 0000 1111 1111 1111 1111 1111 1111 1111 1110 1111 1111
0 to +5V
+4.9988V +3.7500 +2.5000 +1.2500 +0.0012 0.0000
0 to -2mA
-1.9995 -1.5000 -1.0000 -0.5000 -0.0005 0.0000
+
6.3V
RO I OUT 5k
L
RL
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Unipolar Output, Complementary BCD UNIPOLAR OUTPUT RANGES BCD INPUT CODE MSB LSB 0 to +10V 0 to +5V 0 to +2.5V 0 to -2mA
0110 1000 1010 1101 1111 1111 0110 1010 1111 1010 1111 1111 0110 1111 1111 1111 1110 1111 +9.990 +7.500 +5.000 +2.5000 +0.0100 0.0000 +4.995 +3.750 +2.5000 +1.250 +0.005 0.0000 +2.498 +1.875 +1.250 +0.625 +0.003 0.0000 -1.2488 -0.9375 -0.6250 -0.3125 -0.0013 0.0000
*This resistor is open circuit for BCD models V OUT = 2.5V Maximum (Output compliance voltage) REQ = R O = 5k for unipolar operation REQ = R R || RO = 2.8k for bipolar operation
Bipolar Output, Complementary Offset Binary INPUT CODE MSB
0000 0011 0111 1011 1111 1111
BIPOLAR OUTPUT RANGES 10V
+9.9951 +5.0000 0.0000 -5.0000 -9.9951 -10.0000
LSB
0000 0000 1111 1111 1111 1111 1111 1111 1111 1110 1111 1111
5V
+4.9976 +2.5000 0.0000 -2.5000 -4.9976 -5.0000
2.5V
+2.4988 +1.2500 0.0000 -1.2500 -2.4988 -2.5000
1mA
-0.9995 -0.5000 0.0000 +0.5000 +0.9995 +1.0000
I OUT = 2mA binary = 1.25mA BCD
Figure 4. Equivalent Current Mode Output Circuit
BIT LSB 12 11 10 9 8 DIGITAL 7 INPUTS 6 5 4 3 2 MSB 1
12 11 10 9 8 7 6 5 4 3 2 1
13 14 15 16 17 18 19 20 21 22 23 24
1F C (0.001 TO 0.01F) 1F
-15V VOUT = -5 TO +5V +15V
CONNECTION DIAGRAMS
BIT LSB 12 11 10 9 8 DIGITAL 7 INPUTS 6 5 4 3 2 MSB 1 12 11 10 9 8 7 6 5 4 3 2 1 13 14 15 16 17 18 19 20 21 22 23 24
1F C (0.001 TO 0.01F) 1F
-15V VOUT = 0 TO +10V +15V
2.2M
ZERO ADJUST 10k TO 100k -15V GAIN ADJUST 10k TO 100k
2.8M
2.2M
ZERO ADJUST 10k TO 100k -15V GAIN ADJUST 10k TO 100k
DAC-HZ12B (BOTTOM VIEW)
+15V
+15V
2.8M
Figure 5. Bipolar Voltage Output Connections
DAC-HZ12B or DAC-HZ12D (BOTTOM VIEW)
+15V
+15V
Figure 2. Unipolar Voltage Output Connections
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BIT LSB 12 11 10 9 8 DIGITAL 7 INPUTS 6 5 4 3 2 MSB 1 12 11 10 9 8 7 6 5 4 3 2 1 13 14 15 16 17 18 19 20 21 22 23 24 2.8M +15V -15V GAIN ADJUST 10k TO 100k +15V
0.235 MAX. (5.969) 0.200 MAX. (5.080) 0.100 TYP. (2.540) 1.100 (27.940)
1F C (0.001 TO 0.01F) 1F
-15V -15V
ZERO ADJUST 10k TO 100k +15V
MECHANICAL DIMENSIONS INCHES (mm)
2.2M I OUT = 1mA
24
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
13
VOUT 100mV 100
DAC-HZ12B (BOTTOM VIEW)
Figure 6. Bipolar Current Output Connections
0.010 -0.001 (0.254) 0.190 MAX. (4.826) 0.100 (2.540) 0.040 (1.016)
+0.002
17 BIPOLAR OFFSET DAC-HZ12B or DAC-HZ12D 18 10V RANGE 19 20V RANGE 20 CURRENT OUT
Pin 20 or 21
0.018 0.002 (0.457)
SEATING PLANE 0.025 (0.635)
0.600 0.010 (15.240)
0.100 (2.540)
1.290 MAX. (32.77 MAX.)
A X
24
13
DATEL
A = External high-speed inverting op amp; use DATEL's AM-500 for less than 1sec output settling.
Refer to the output range selection tables, Tables 1 and 2. Wherever pin 15 appears, use pin X of the external amplifier and scale as desired.
0.225 MAX. (5.72 MAX.)
0.500/0.610 (12.70/15.49)
1
PIN 1 IDENTIFIER
12
0.015 / 0.075 (0.38 / 1.91)
Figure 7. Using a High-Speed External Op Amp for Faster Settling
0.014 / 0.023 (0.36/0.58) 0.100 TYP. (2.54) 0.030 / 0.070 (0.76 / 1.78) 0.120 / 0.200 (3.05 / 5.08) 0.590/0.620 (14.98/15.74)
ORDERING INFORMATION
MODEL DAC-HZ12BGC DAC-HZ12BMC DAC-HZ12BMM DAC-HZ12BMM-QL OPERATING TEMP. RANGE 0 to +70C 0 to +70C -55 to +125C -55 to +125C OUTPUT CODING Binary Binary Binary Binary MODEL DAC-HZ12DGC DAC-HZ12DMC DAC-HZ12DMM DAC-HZ12DMM-QL OPERATING TEMP. RANGE 0 to +70C 0 to +70C -55 to +125C -55 to +125C OUTPUT CODING BCD BCD BCD BCD
Contact DATEL for information concerning our QL high-reliability screening program.
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DS-0134
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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