®
®
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
register
Input
fast settling time
3μs
Guaranteed monotonicity over full temperature
range
INPUT/OUTPUT CONNECTIONS
PIN FUNCTION
PIN
1
2
3
4
5
6
7
8
9
10
11
12
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)
24
23
22
21
20
19
18
17
16
15
14
13
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 interfac-
ing 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 pinprogram-
mable 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 ampli-
fier 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.
FUNCTION
REFERENCE OUT
GAIN ADJUST
+15V SUPPLY
GROUND
SUMMING JUNCTION
20V RANGE
10V RANGE
BIPOLAR OFFSET
LOAD
VOLTAGE OUTPUT
–15V SUPPLY
+5V SUPPLY
BLOCK DIAGRAM
REF.
OUT
24
GAIN
ADJUST
23
BIPOLAR
OFFSET
17
+15V
SUPPLY
22
–15V
SUPPLY
14
+5V
SUPPLY
13
19 20V RANGE
5k
Ω
18 10V RANGE
+5V
5k
Ω
D/A CONVERTER
LOAD 16
20
SUMMING
JUNCTION
REGISTER
74LS75
REGISTER
74LS75
REGISTER
74LS75
15
VOLTAGE
OUTPUT
21 GROUND
1 2 3 4
BITS 1 2 3 4
MSB
5 6 7 8
5 6 7 8
9 10 11 12
9 10 11 12
LSB
DIGITAL INPUTS
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: help@datel.com
MDA_DAC-HK.B01
Page 1 of 5
®
®
DAC-HK Series
High-Performance, 12-Bit DAC’s with Input Registers
ABSOLUTE MAXIMUM RATINGS
PARAMETERS
Positive Supply, Pin 22
Negative Supply, Pin 14
Logic Supply, Pin 13
Digital Input Voltage, Pins 1–12 & 16
Output Current, Pin 15
Lead Temperature (soldering, 10s)
LIMITS
+18
–18
+5.25
+5.5
±20
300
UNITS
Volts
Volts
Volts
Volts
mA
°C
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
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)
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.
Storage Temperature Range
Package Type
Weight
Footnotes:
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: help@datel.com
MDA_DAC-HK.B01
Page 2 of 5
®
®
DAC-HK Series
High-Performance, 12-Bit DAC’s with Input Registers
MECHANICAL DIMENSIONS (inches (mm))
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
OPERATING TEMPERATURE RANGE
0 to +70°C
0 to +70°C
–40 to +85°C
–55 to +125°C
–55 to +125°C
0 to +70°C
0 to +70°C
–40 to +85°C
–55 to +125°C
–55 to +125°C
RoHS RATING
Non-RoHS
Non-RoHS
Non-RoHS
Non-RoHS
Non-RoHS
RoHS
RoHS
RoHS
RoHS
RoHS
Non-RoHS
Non-RoHS
Non-RoHS
Non-RoHS
Non-RoHS
RoHS
RoHS
RoHS
RoHS
RoHS
Binary Coding
DAC-HK12BGC
DAC-HK12BMC
DAC-HK12BME
DAC-HK12BMM
DAC-HKB/883
DAC-HK12BGC-C
DAC-HK12BMC-C
DAC-HK12BME-C
DAC-HK12BMM-C
DAC-HKB-C/883
Two’s Complement Coding
DAC-HK12BGC-2
0 to +70°C
DAC-HK12BMC-2
0 to +70°C
DAC-HK12BME-2
–40 to +85°C
DAC-HK12BMM-2
–55 to +125°C
DAC-HKB-2/883
–55 to +125°C
DAC-HK12BGC-2-C
0 to +70°C
DAC-HK12BMC-2-C
0 to +70°C
DAC-HK12BME-2-C
–40 to +85°C
DAC-HK12BMM-2-C
–55 to +125°C
DAC-HKB-2-C/883
–55 to +125°C
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.
www.datel.com • e-mail: help@datel.com
MDA_DAC-HK.B01
Page 5 of 5
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