®
®
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 +10°C to +40°C
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 +70°C
commercial or –55 to +125°C 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
Ω
REFERENCE 24
OUT
6.4V
REFERENCE
17 OUTPUT
5k
Ω
5k
Ω
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
300°C
®
®
TECHNICAL NOTES
1. It is recommended that these converters be operated with
local supply bypass capacitors of 1µF (tantalum type) at the
+15V and –15V supply pins. The capacitors should be
connected as close to the pins as possible. In high-
frequency noise environments, an additional 0.01µF
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
±10µA 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 +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
Nonlinearity Error,
max.
Monotonicity,
+10°C to +40°C
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
0°C to +70°C (BMC, BGC)
–55°C to +125°C (BMM, 883)
–65°C to +150°C
24-pin DDIP
0.22 ounces (6.3 grams)
0 to +10V
±5V
±10V
±5mA
0.05Ω
±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
15µs
±20V/µs
±0.003%FSR/%
16 bits
Complementary binary
Complementary offset binary
0V to +0.8V at –1mA
+2.4V to +5.5V at +40µA
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 ±10µA
DAC-HP16B
24
+6.4V*
0.5µA
±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
®
®
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
+153µV
0
CONNECTION DIAGRAMS
17
18
DAC-HP16B
OUTPUT (0 TO +10V)
+15V
17
18
DAC-HP16B
OUTPUT (±5V)
ZERO
ADUST
2.2MΩ
ZERO
ADUST
2.2MΩ
+15V
21
510kΩ
22
0.01µF
50kΩ
50kΩ
GAIN
ADUST
–15V
21
510kΩ
22
0.01µF
50kΩ
50kΩ
GAIN
ADUST
–15V
Figure 3. Unipolar Operations
Figure 4. Bipolar Operations
21 SUMMING JUNCTION
5kΩ*
FULL SCALE
I
OUT
= 2mA
I
OUT
6.4kΩ
18 BIPOLAR OFFSET
24 REFERENCE OUT
6.4V
REF.
20 GROUND
* 10k FOR -1 MODELS
17 OUTPUT
5kΩ
Figure 5. Output Circuit
DAC-HP16
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 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 +70°C
0 to +70°C
–55 to +125°C
–55 to +125°C
0 to +70°C
0 to +70°C
–55 to +125°C
–55 to +125°C
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 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.
stm32/stm8
京公网安备 11010802033920号
EEWORLD
