DAC-HZ Series
12-Bit, Industry-Standard
Digital-to-Analog Converters
INNOVATION and EX C ELL E N C E
Figure 1. Functional Block Diagram
FEATURES
12-Bit binary and 3-digit BCD models
7 Output ranges
3s V
OUT
settling time
300ns I
OUT
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
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
CURRENT OUTPUT
6
BIT 6
19
20V RANGE
7
BIT 7
18
10V RANGE
8
BIT 8
17
BIPOLAR OFFSET
9
BIT 9
16
REFERENCE IN
10
BIT 10
15
VOLTAGE OUTPUT
11
BIT 11
14
15V SUPPLY
12
BIT 12 (LSB)
13
NO CONNECTION
INPUT/OUTPUT CONNECTIONS
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.
MSB
BITS BCD
BITS BINARY
6.3k
W
LSB
1 2 3 4
REFERENCE OUT 24
GAIN ADJUST 23
BIPOLAR OFFSET
18
+15V
SUPPLY
22
20
19
17
21
5 6 7 8 9 10 11 12
D/A CONVERTER
GROUND
20V RANGE
15V
SUPPLY
+6.3V
REFERENCE
1 2 3 4 5 6 7 8 9 10 11 12
1
2
4
8
10
20
40
80
10
0
2
00
4
00
80
0
5k
W
5k
W
(4k
W
, BCD)
15
16
REFERENCE IN
10V RANGE
CURRENT OUTPUT
VOLTAGE OUTPUT
NO INTERNAL
CONNECTION
14
13
*
*
FOR BCD MODELS,
THIS RESISTOR IS
OPEN CIRCUIT.
(4k
W
, BCD)
DAC-HZ Series
DAC-HZ12B
DAC-HZ12D
INPUTS
(BINARY)
(BCD)
Resolution
12 binary bits
3 BCD digits
Coding, Unipolar Output
Comp. binary
Comp. BCD
Coding, Bipolar Output
Comp. off. binary
--
Input Logic Level, Bit ON ("0")
0V to +0.8V at 1mA
Input Logic Level, Bit OFF ("1")
+2.4V to +5.5V at +40
A
Logic Loading
1 TTL load
PERFORMANCE
Voltage Output Nonlinearity
1/2LSB max.
1/4LSB max.
Differential Nonlinearity
3/4LSB max
1/4LSB max.
Gain Error, Before Trimming
0.1%
Zero Error, Before Trimming
0.1% of FSR
Gain Tempco, maximum
20ppm/C
Zero Tempco, Unipolar, max.
3ppm/C of FSR
Offset Tempco, Bipolar, max.
10ppm/C of FSR
Diff. Nonlinearity Tempco, max.
2ppm/C of FSR
Monotonicity
Over oper. temp. range
Settling Time, I
OUT
to 1/2LSB
300ns
Settling Time, V
OUT
to 1/2LSB
3
s
Slew Rate
10V/
s
Power Supply Rejection
0.006%FSR/%Sup.
OUTPUTS
Output Current, Unipolar
0 to 2mA, 20%
0 to 1.25mA, 10%
Output Current, Bipolar
1mA, 20%
--
Compliance Voltage, I
OUT
2.5V
Output Impedance, I
OUT
, Unipolar
2k
Output Impedance, I
OUT
, Bipolar
2k
--
Output Voltage Ranges, Unipolar
0 to +5V
0 to +2.5V
0 to +10V
0 to +5V
0 to +10V
Output Voltage Ranges, Bipolar
2.5V
--
5V
--
10V
--
Output Current, V
OUT
5mA min.
Output Impedance, V
OUT
0.05
POWER REQUIREMENTS
Power Supply Voltages
+15V, 0.5V at 16mA
15V, 0.5V at 20mA
12V operation
Power Dissipation, maximum
500mW
PHYSICAL ENVIRONMENTAL
Operating Temp. Ranges, Case
0C to +70 and 55C to +125C
Storage Temp. Range
65C to +150C
Thermal Impedance
jc
7.4C/W
ca
36.6C/W
Package Type
24-pin DDIP
Weight
0.22 ounces (6.3 grams)
ABSOLUTE MAXIMUM RATINGS
Positive Supply, Pin 22
+18V
Negative Supply, Pin 14
18V
Digital Input Voltage, Pins 112
+5.5V
Output Current, Pin 15
20mA
Lead Temperature (soldering, 10s)
300C
FUNCTIONAL SPECIFICATIONS
(Typical at +25C and 15V supplies unless otherwise noted.)
* Specifications same as first column.
-- No equivalent specifications
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.
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 by-
pass 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.
DAC-HZ Series
DAC-HZ12B Binary Output Range Selection
OUTPUT RANGE SELECTION TABLES
V
OUT
RANGE
CONNECT THESE PINS TOGETHER
Figure 2. Unipolar Voltage Output Connections
10V
15 & 19
17 & 20
--
16 & 24
5V
15 & 18
17 & 20
--
16 & 24
2.5V
15 & 18
17 & 20
19 & 20
16 & 24
+10V
15 & 18
17 & 21
--
16 & 24
+5V
15 & 18
17 & 21
19 & 20
16 & 24
1mA
--
17 & 20
--
16 & 24
DAC-HZ12D BCD Output Range Selection
+10V
15 & 19
17 & 21
--
16 & 24
+5V
15 & 18
17 & 21
--
16 & 24
+2.5V
15 & 18
17 & 21
19 & 20
16 & 24
1.25mA
--
17 & 21
--
16 & 24
BINARY INPUT CODE
Unipolar Output, Complementary Binary
0000
0000 0000
+9.9976V
+4.9988V
1.9995
0011
1111
1111
+7.5000
+3.7500
1.5000
0111
1111
1111
+5.0000
+2.5000
1.0000
1011
1111
1111
+2.5000
+1.2500
0.5000
1111
1111
1110
+0.0024
+0.0012
0.0005
1111
1111
1111
0.0000
0.0000
0.0000
BCD INPUT CODE
Unipolar Output, Complementary BCD
MSB
LSB
0 to +10V
0 to +5V
0 to +2.5V 0 to 2mA
UNIPOLAR OUTPUT RANGES
MSB
LSB
0 to +10V
0 to +5V
0 to 2mA
UNIPOLAR OUTPUT RANGES
0110
0110
0110
+9.990
+4.995
+2.498
1.2488
1000
1010
1111
+7.500
+3.750
+1.875
0.9375
1010
1111
1111
+5.000
+2.5000
+1.250
0.6250
1101
1010
1111
+2.5000
+1.250
+0.625
0.3125
1111
1111
1110
+0.0100
+0.005
+0.003
0.0013
1111
1111
1111
0.0000
0.0000
0.0000
0.0000
BIPOLAR OUTPUT RANGES
INPUT CODE
Bipolar Output, Complementary Offset Binary
MSB
LSB
10V
5V
2.5V
1mA
0000
0000 0000
+9.9951
+4.9976
+2.4988
0.9995
0011
1111
1111
+5.0000
+2.5000
+1.2500
0.5000
0111
1111
1111
0.0000
0.0000
0.0000
0.0000
1011
1111
1111
5.0000
2.5000
1.2500
+0.5000
1111
1111
1110
9.9951
4.9976
2.4988
+0.9995
1111
1111
1111
10.0000
5.0000
2.5000
+1.0000
OUTPUT CODING TABLES
CONNECTION DIAGRAMS
13
14
15
16
17
18
19
20
21
22
23
24
+15V
12
11
10
9
8
7
6
5
4
3
2
1
1F
1F
= 0 TO +10V
V
15V
C (0.001
TO 0.01F)
2.8M
BIT
12
11
10
9
8
7
6
5
4
3
2
1
LSB
MSB
DIGITAL
INPUTS
2.2M
OUT
+15V
15V
GAIN ADJUST
10k
TO 100k
ZERO ADJUST
10k
TO 100k
+15V
DAC-HZ12B
or DAC-HZ12D
(BOTTOM VIEW)
Voltage output is at pin 15; current output is at pin 20.
Figure 3. Unipolar Current Output Connections
13
14
15
16
17
18
19
20
21
22
23
24
+15V
12
11
10
9
8
7
6
5
4
3
2
1
1F
1F
= 0 TO 200mV
V
15V
C (0.001
TO 0.01F)
2.8M
BIT
12
11
10
9
8
7
6
5
4
3
2
1
LSB
MSB
DIGITAL
INPUTS
2.2M
OUT
GAIN ADJUST
10k
TO 100k
ZERO ADJUST
10k
TO 100k
+15V
DAC-HZ12B
or DAC-HZ12D
(BOTTOM VIEW)
15V
15V
100
+15V
I
OUT
= 0 TO 2mA
BIPOLAR OFFSET
CURRENT OUT
R
EQ
= R
O
= 5k for unipolar operation
R
EQ
= R
R
= 2.8k for bipolar operation
I
OUT
= 2mA binary
= 1.25mA BCD
*This resistor is open circuit for BCD models
6.3V
+
DAC-HZ12B or DAC-HZ12D
I
OUT
R
O
R
EQ
I
L
R
L
R
R
= 2.5V Maximum
(Output compliance voltage)
V
OUT
V
OUT
17
20
21
5k
6.3k
*
GND
|| R
O
Figure 4. Equivalent Current Mode Output Circuit
13
14
15
16
17
18
19
20
21
22
23
24
+15V
12
11
10
9
8
7
6
5
4
3
2
1
1F
1F
= 5 TO +5V
V
15V
C (0.001
TO 0.01F)
2.8M
BIT
12
11
10
9
8
7
6
5
4
3
2
1
LSB
MSB
DIGITAL
INPUTS
2.2M
OUT
+15V
15V
GAIN ADJUST
10k
TO 100k
ZERO ADJUST
10k
TO 100k
+15V
DAC-HZ12B
(BOTTOM VIEW)
Figure 5. Bipolar Voltage Output Connections
DAC-HZ Series
Figure 6. Bipolar Current Output Connections
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.
MECHANICAL DIMENSIONS INCHES (mm)
Figure 7. Using a High-Speed External Op Amp for
Faster Settling
13
14
15
16
17
18
19
20
21
22
23
24
+15V
12
11
10
9
8
7
6
5
4
3
2
1
1F
1F
100mV
V
15V
C (0.001
TO 0.01F)
2.8M
BIT
12
11
10
9
8
7
6
5
4
3
2
1
LSB
MSB
DIGITAL
INPUTS
2.2M
OUT
GAIN ADJUST
10k TO 100k
ZERO ADJUST
10k
TO 100k
+15V
DAC-HZ12B
(BOTTOM VIEW)
15V
15V
100
+15V
I
OUT
= 1mA
BIPOLAR OFFSET
17
10V RANGE
Pin 20 or 21
18
20V RANGE
19
CURRENT OUT
20
DAC-HZ12B
or
DAC-HZ12D
X
A
External high-speed inverting op amp; use DATEL's AM-500
for less than 1sec output settling.
A =
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.
0.500/0.610
(12.70/15.49)
DATEL
PIN 1
IDENTIFIER
1
24
0.225 MAX.
(5.72 MAX.)
0.030 / 0.070
(0.76 / 1.78)
0.014 / 0.023
(0.36/0.58)
0.100 TYP.
(2.54)
0.590/0.620
(14.98/15.74)
1.290 MAX.
(32.77 MAX.)
0.120 / 0.200
(3.05 / 5.08)
0.015 / 0.075
(0.38 / 1.91)
12
13
0.200 MAX.
(5.080)
0.235 MAX.
(5.969)
0.600 0.010
(15.240)
0.80 MAX.
(20.32)
0.100 TYP.
(2.540)
0.100
(2.540)
0.018 0.002
(0.457)
0.100
(2.540)
0.040
(1.016)
1.31 MAX.
(33.27)
1
12
13
24
1.100
(27.940)
0.190 MAX.
(4.826)
0.010
(0.254)
+0.002
0.001
SEATING
PLANE
0.025
(0.635)
Dimension Tolerances
(unless otherwise indicated):
2 place decimal (.XX) 0.010 (0.254)
3 place decimal (.XXX) 0.005 (0.127)
Lead Material:
Kovar alloy
Lead Finish:
50 microinches (minimum)
gold plating over 100 microinches
(nominal) nickel plating
OPERATING
OUTPUT
MODEL
TEMP. RANGE
CODING
DAC-HZ12BGC
0 to +70C
Binary
DAC-HZ12BMC
0 to +70C
Binary
DAC-HZ12BMM
55 to +125C
Binary
DAC-HZ12BMM-QL
55 to +125C
Binary
OPERATING
OUTPUT
MODEL
TEMP. RANGE
CODING
DAC-HZ12DGC
0 to +70C
BCD
DAC-HZ12DMC
0 to +70C
BCD
DAC-HZ12DMM
55 to +125C
BCD
DAC-HZ12DMM-QL
55 to +125C
BCD
Contact DATEL for information concerning our QL high-reliability screening program.
ORDERING INFORMATION
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 Mnchen, Germany Tel: 89-544334-0
DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025
DS-0134 1996
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