®
®
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
•
3µs 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
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
6.3k
W
*
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
®
®
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
300°C
Footnotes
➀
FSR is full-scale range and is 10V for 0 to +10V or –5V to +5V outputs, 20V for
±10V output, etc.
➁
Initial gain and offset errors are trimmable to zero. See Connection Diagrams.
➂
Current output mode.
➃
For 2.5kΩ or 5kΩ feedback. For 10kΩ feedback, the settling time is 4µs.
➄
For ±12V operation of binary models, contact factory.
FUNCTIONAL SPECIFICATIONS
(Typical at +25°C 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
➀
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,
I
OUT
to ±1/2LSB
➂
Settling Time,
V
OUT
to ±1/2LSB
Slew Rate
Power Supply Rejection
OUTPUTS
Output Current,
Unipolar
Output Current,
Bipolar
Compliance Voltage,
I
OUT
Output Impedance,
I
OUT
, Unipolar
Output Impedance,
I
OUT
, Bipolar
Output Voltage Ranges,
Unipolar
0 to –2mA, ±20%
±1mA, ±20%
±2.5V
2kΩ
2kΩ
0 to +5V
0 to +10V
±2.5V
±5V
±10V
±5mA min.
0.05Ω
0 to –1.25mA, ±10%
—
∗
∗
—
0 to +2.5V
0 to +5V
0 to +10V
—
—
—
∗
∗
±1/2LSB max.
±3/4LSB max
±0.1%
➁
±0.1% of FSR
➁
±20ppm/°C
±3ppm/°C of FSR
±10ppm/°C of FSR
±2ppm/°C of FSR
Over oper. temp. range
300ns
3µs
➃
±10V/µs
±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 +40µA
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 by-
pass capacitors from +15V to ground and –15V to ground.
Tantalum type capacitors of 1µF 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 0.01µF 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 100Ω 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 1µs 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,
V
OUT
Output Impedance,
V
OUT
POWER REQUIREMENTS
Power Supply Voltages
Power Dissipation,
maximum
PHYSICAL ENVIRONMENTAL
Operating Temp. Ranges,
Case
Storage Temp. Range
Thermal Impedance
θjc
θca
Package Type
Weight
* Specifications same as first column.
— No equivalent specifications
+15V, ±0.5V at 16mA
–15V, ±0.5V at 20mA
±12V operation
➄
500mW
0°C to +70° and –55°C to +125°C
–65°C to +150°C
7.4°C/W
36.6°C/W
24-pin DDIP
0.22 ounces (6.3 grams)
®
®
DAC-HZ Series
OUTPUT RANGE SELECTION TABLES
DAC-HZ12B Binary Output Range Selection
V
OUT
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
2.8MΩ
+15V
–15V
GAIN ADJUST
10kΩ TO 100kΩ
+15V
1µF
C (0.001
TO 0.01µF)
1µF
–15V
–15V
ZERO ADJUST
10kΩ TO 100kΩ
+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
2.2MΩ
I
OUT
= 0 TO –2mA
V
OUT
= 0 TO –200mV
100Ω
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
6.3kΩ *
17 BIPOLAR OFFSET
R
R
CURRENT OUT
20
I
R
EQ
21
DAC-HZ12B or DAC-HZ12D
GND
V
OUT
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
R
O
I
OUT
5kΩ
L
R
L
–
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)
R
EQ
= R
O
= 5k for unipolar operation
R
EQ
= R
R
|| R
O
= 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
1µF
C (0.001
TO 0.01µF)
1µF
–15V
V
OUT
= –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
1µF
C (0.001
TO 0.01µF)
1µF
–15V
V
OUT
= 0 TO +10V
+15V
2.2MΩ
ZERO ADJUST
10kΩ TO 100kΩ
–15V
GAIN ADJUST
10kΩ TO 100kΩ
2.8MΩ
2.2MΩ
ZERO ADJUST
10kΩ TO 100kΩ
–15V
GAIN ADJUST
10kΩ TO 100kΩ
DAC-HZ12B
(BOTTOM VIEW)
+15V
+15V
2.8MΩ
Figure 5. Bipolar Voltage Output Connections
DAC-HZ12B
or DAC-HZ12D
(BOTTOM VIEW)
+15V
+15V
Figure 2. Unipolar Voltage Output Connections
®
®
DAC-HZ Series
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)
1µF
C (0.001
TO 0.01µF)
1µF
–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
V
OUT
±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 1µsec 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 +70°C
0 to +70°C
–55 to +125°C
–55 to +125°C
OUTPUT
CODING
Binary
Binary
Binary
Binary
MODEL
DAC-HZ12DGC
DAC-HZ12DMC
DAC-HZ12DMM
DAC-HZ12DMM-QL
OPERATING
TEMP. RANGE
0 to +70°C
0 to +70°C
–55 to +125°C
–55 to +125°C
OUTPUT
CODING
BCD
BCD
BCD
BCD
Contact DATEL for information concerning our QL high-reliability screening program.
®
®
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 München, 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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