DAC-88GM-2-C [DATEL]
High-Performance, 12-Bit DACs with Input Registers;
| 型号： | DAC-88GM-2-C |
| 厂家： | 
DATEL, Inc. |
| 描述： | High-Performance, 12-Bit DACs with Input Registers |
| 文件： | 总6页 (文件大小：216K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DAC-88 Series
High-Performance, 12-Bit DACs 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
Input register
3μs fast output settling time
Guaranteed monotonicity over full temperature
range
PRODUCT OVERVIEW
INPUT/OUTPUT CONNECTIONS
The DAC-88 Series D/A converters are high
pin programmable and include 0 to +10V, ±±V,
and ±10V. The DAC-88 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 ±±ppm/ꢀC maximum.
PIN FUNCTION
PIN FUNCTION
performance 12-bit devices with a fast settling
voltage output. They are compatible and pin-pin
replacement for the standard DAC88 and 3860
series. They incorporate a level-controlled input
storage register and are specifically designed for
systems applications such as data bus interfacing
with computers. When the “load/Register Enable”
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 com-
plement. The output voltage ranges are externally
1
BIT 1 (MSB)
BIT 2
24
23
22
21
20
19
18
17
16
1±
14
13
REFERENCE OUT
2
GAIN ADJUST
3
BIT 3
+1±V SUPPLY
GROUND
4
BIT 4
±
BIT ±
SUMMING JUNCTION
LOAD/Register Enable
10V RANGE
6
BIT 6
7
BIT 7
8
BIT 8
BIPOLAR OFFSET
REFERENCE IN
VOLTAGE OUTPUT
–1±V SUPPLY
9
BIT 9
10
11
12
BIT 10
BIT 11
BIT 12 (LSB)
+±V SUPPLY
BLOCK DIAGRAM
REF.
OUT
24
GAIN
ADJUST
23
REF.
IN
16
+15V
SUPPLY SUPPLY
–15V
+5V
SUPPLY
13
BIPOLAR
OFFSET
17
22
14
ꢀNȍ
+5V
18 10V RANGE
D/A CONVERTER
SUMMING
20
JUNCTION
LOAD 19
ꢀNȍ
VOLTAGE
15
OUTPUT
REGISTER
74LS75
REGISTER
74LS75
REGISTER
74LS75
21 GROUND
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9 10 11 12
9 10 11 12
BITS
MSB
DIGITAL INPUTS
LSB
Figure 1. DAC-88 Functional Block Diagram
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
•
Tel: (508) 339-3000
•
www.datel.com
•
e-mail: help@datel.com
MDA_DAC-88.A01 Page 1 of 6
DAC-88 Series
High-Performance, 12-Bit DACs with Input Registers
FUNCTIONAL SPECIFICATIONS
(Typical at +2±ꢀC and ±1±V and +±V supplies unless otherwise noted.)
DESCRIPTION
INPUTS
Resolution
ABSOLUTE MAXIMUM RATINGS
PARAMETERS
LIMITS
Pin 22
UNITS
+18 Volts
–18 Volts
+±.2± Volts
+±.± Volts
±20 mA
12 bits
Positive Supply,
Negative Supply,
Logic Supply,
Coding, Unipolar Output
Coding, Bipolar Output
Input Logic Level, Bit ON ("1")
Input Logic Level, Bit OFF ("0")
Logic Loading
Straight binary
Pin 14
Offset binary, two’s complement ➀
+2.0V to +±.±V
Pin 13
Digital Input Voltage,
Output Current,
Lead Temperature
Pins 1–12 & 19
Pin 1±
0V to +0.8V
1 LSTTL load
(soldering, 10s)
300 ꢀC
High (“1”) = hold data
Low (“0”) = transfer data
3 LSTTL loads
Load Input ➁
TECHNICAL NOTES
Load Input Loading
1. It is recommended that these converters be operated with local supply
bypass capacitors of 1μF (tantalum type) at the +1±V, –1±V and +±V 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.
PERFORMANCE ➃
Nonlinearity Error, max.
Differential Nonlinearity Error, max.
Gain Error, Before Trimming
Zero Error, Before Trimming
Gain Tempco, max.
±1/2LSB
±3/4LSB
±0.1ꢁ ➂
±0.1ꢁ of FSR ➂
±20ppm/ꢀC
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.
Zero Tempco, Unipolar, max.
Offset Tempco, Bipolar, max.
Diff. Nonlinearity Tempco, max.
Monotonicity
±±ppm/ꢀC of FSR
±10ppm/ꢀC of FSR
±2ppm/ꢀC of FSR
Guaranteed over temperature
3ꢂs
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.
Settling Time, 10V Change
Settling Time, 20V Change
Settling Time, 1LSB Change
Slew Rate
4. A setup time of 40ns minimum must be allowed for the input data. The DAC
output voltage begins to change when the register output changes.
4ꢂs
800ns
±20V/ꢂs
CALIBRATION PROCEDURE
Power Supply Rejection
±0.002ꢁFSR/ꢁ
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.
OUTPUTS
Output Voltage Ranges, Unipolar ➄
0 to +10V
±±V
±10V
±±mA min.
0.0±Ω
Output Voltage Ranges, Bipolar ➄
Unipolar Operation
Output Current
Output Impedance
1. Offset Adjustment. Set the input digital code to 1111 1111 1111 and
POWER REQUIREMENTS
adjust the Offset ADJ. potentiometer to give 0.0000V output.
+1±V, ±0.±V at 10mA
–1±V, ±0.±V at 20mA
+±V, ±0.2±V at ±0mA
2. Gain Adjustment. Set the input digital code to 0000 0000 0000 (straight
binary) and adjust the GAIN ADJ. potentiometer to give the full-scale
output voltage shown in Table 1.
Power Supply Voltages ➅
PHYSICAL/ENVIRONMENTAL
0ꢀC to +70ꢀC ( MC,MC-C)
-40ꢀC to +100ꢀC (ME,ME-C)
–±±ꢀC to +12±ꢀC
(MM, MM-C, 883,-C/883)
–6±ꢀC to +12±ꢀC
Bipolar Operation
Operating Temperature Range, Case
1. Offset Adjustment. Set the digital input code to 1111 1111 1111 (offset
binary) or 0111 1111 1111 (two’s complement) and adjust the OFFSET
ADJ. potentiometer to give the negative full-scale output voltage shown in
Table 2.
Storage Temperature Range
Package Type
Weight
24-pin DDIP
0.22 ounces (6.3 grams)
2. Gain Adjustment. Set the digital input code to 0000 0000 0000 (offset
binary) or 1000 0000 0000 two’s complement) and adjust the GAIN ADJ.
potentiometer to give the positive full-scale output voltage shown in Table 2.
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, +±V operation, contact factory.
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
•
Tel: (508) 339-3000
•
www.datel.com
•
e-mail: help@datel.com
MDA_DAC-88.A01 Page 2 of 6
DAC-88 Series
High-Performance, 12-Bit DACs with Input Registers
20 SUMMING JUNCTION
Hold
ꢀNȍ
LOAD
Transfer
FULL SCALE
I
= 2mA
OUT
18
10V RANGE
1
0
DATA IN
t
ꢀNȍ
SETUP
40nsec min.
I
t
15 VOLTAGE OUTPUT
16 REFERENCE IN
OUT
SETUP
50nsec min.
REGISTER
OUTPUT TO
DAC
6.3Nȍ
ꢀNȍ
17 BIPOLAR OFFSET
24 REFERENCE OUT
t
t
PHL
PLH
60nsec
6.3V
REF.
60nsec
ALL RISE AND FALL TIMES
≤ 10nsec
21 GROUND
Figure 2. DAC-88 Timing
Figure 3. Output Circuit
CONNECTION DIAGRAMS
LOAD
LOAD
BIT
BIT
+5V
+5V
LSB 12
12
11
10
9
13
LSB 12
12
13
11
10
9
–15V
11
10
9
11
10
9
–15V
14
15
16
17
18
19
20
21
22
23
24
14
15
16
17
18
19
20
21
22
23
24
OUT
(O TO +10V)
OUT
(–5 TO +5V)
1μF
1μF
1μF
1μF
8
8
8
8
7
7
7
7
DATA
DATA
IN
IN
6
5
4
3
2
1
6
6
5
4
3
2
1
6
2.20ȍ
2.20ȍ
100k
OFFSET
ADJUST
100k
OFFSET
ADJUST
5
5
4
4
3
3
2.80ȍ
2.80ȍ
100k
GAIN
ADJUST
100k
GAIN
ADJUST
2
2
1
1
MSB
MSB
1μF
0.01μF
1μF
0.01μF
+15V
+15V
Figure 4. Unipolar Operation (0 to +10V)
Figure 5. Bipolar Operation (±5V)
APPLICATIONS
DAC-HK12B
DAC-HK12B
DAC-HK12B
N
LSB's MSB's
DAC-HK12B
0
DAC-HK12B
1
DAC-HK12B
N
ꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁ
ꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁ
LOAD N
LOAD 1
LOAD N
LOAD 1
LOAD 0
LOAD 0
0
1
LSB's MSB's
LSB's MSB's
0
1
ꢁꢁꢁꢁꢁꢁ
N
0
1
ꢁꢁꢁꢁꢁꢁ
N
TEMPORARY
STORAGE REGISTER
ADDRESS DECODER
ADDRESS DECODER
LOAD
HI BYTE
LOAD
LO BYTE
8 BIT DATA BUS
ADDRESS
STROBE
ADDRESS
A
A
1
N
ꢁꢁꢁꢁ
A
0
WRITE
STROBE
Figure 6. Interfacing to ≥12-Bit Data Bus
Figure 7. Interfacing to 8-Bit Data Bus
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
•
Tel: (508) 339-3000
•
www.datel.com
•
e-mail: help@datel.com
MDA_DAC-88.A01 Page 3 of 6
DAC-88 Series
High-Performance, 12-Bit DACs with Input Registers
CODING TABLES
COMPLEMENTARY STRAIGHT BINARY
MSB LSB
OUTPUT RANGES
0 to +10V
+9.9976
0000
0000
0111
0000
0000
1111
0000
0001
1111
+9.99±1
+±.0000
1011
1111
1111
1111
1111
1111
1111
1110
1111
+2.±000
+0.0024
0.0000
Table 1. Unipolar Operation
COMPLEMENTARY OFFSET BINARY
MSB
TWO’S COMPLEMENT
OUTPUT RANGES
LSB
MSB
1000
1000
1111
LSB
±10V
±±V
0000
0000
0111
0000
0000
1111
0000
0001
1111
0000
0000
1111
0000
0001
1111
+9.99±1
+9.9902
0.0000
+4.9976
4.99±1
0.0000
1111
1111
1111
1111
1110
1111
0111
1111
1111
1111
1110
1111
–9.99±1
–4.9976
–±.0000
–10.0000
Table 2. Bipolar Operation
RANGE
±10V
±±V
CONNECT THESE PINS TOGETHER
17 & 20
17 & 20
17 & 21
16 & 24
16 & 24
16 & 24
1± & 18
1± & 18
+10V
Table 3. Output Range Selection
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
•
Tel: (508) 339-3000
•
www.datel.com
•
e-mail: help@datel.com
MDA_DAC-88.A01 Page 4 of 6
DAC-88 Series
High-Performance, 12-Bit DACs with Input Registers
MECHANICAL DIMENSIONS – DDIP PACKAGE
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)
24
1
13
12
Lead Material: Kovar alloy
0.80 MAX.
(20.32)
Lead Finish: 50 microinches (minimum) gold plating
over 100 microinches (nominal) nickel plating
0.100 TYP.
(2.540)
1.100
(27.940)
0.235 MAX.
(5.969)
0.200 MAX.
(5.080)
+0.002
–0.001
0.010
(0.254)
0.190 MAX.
(4.826)
0.100
(2.540)
0.100
(2.540)
0.600 ±0.010
(15.240)
SEATING
PLANE
0.025
0.040
(1.016)
0.018 ±0.002
(0.457)
(0.635)
MECHANICAL DIMENSIONS – SMT GULL-WING PACKAGE
1.31 MAX.
(33.02)
Dimension Tolerances (unless otherwise indicated):
2 place decimal (.XX) ±0.010 (±0.254)
3 place decimal (.XXX) ±0.005 (±0.127)
13
12
24
Kovar alloy
Lead Material:
0.80 MAX.
(20.32)
Lead Finish: 50 microinches (minimum) gold plating
over 100 microinches (nominal) nickel plating
1
0.020 TYP.
(0.508)
0.060 TYP.
0.015
(1.524)
0.190 MAX.
(4.826)
(0.381)
MAX. radius
for any pin
0.130 TYP.
(3.302)
PIN 1
INDEX
0.100
(2.540)
0.020
(0.508)
0.010 TYP.
(0.254)
0.100 TYP.
(2.540)
0.040
(1.016)
Dimensions are in inches (mm)
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
•
Tel: (508) 339-3000
•
www.datel.com
•
e-mail: help@datel.com
MDA_DAC-88.A01 Page ± of 6
DAC-88 Series
High-Performance, 12-Bit DACs with Input Registers
ORDERING INFORMATION
MODEL
OPERATING TEMPERATURE RANGE
RoHS RATING
PACKAGE
Binary Coding
DAC-88MC
0 to +70ꢀC
–40 to +100ꢀC
–±± to +12±ꢀC
–±± to +12±ꢀC
0 to +70ꢀC
Non-RoHS
Non-RoHS
Non-RoHS
Non-RoHS
RoHS
DDIP
DDIP
DDIP
DDIP
DDIP
DDIP
DDIP
DDIP
SMT
SMT
SMT
SMT
SMT
SMT
SMT
SMT
DAC-88ME
DAC-88MM
DAC-88/883
DAC-88MC-C
DAC-88ME-C
DAC-88MM-C
DAC-88-C/883
DAC-88GC
–40 to +100ꢀC
–±± to +12±ꢀC
–±± to +12±ꢀC
0 to +70ꢀC
RoHS
RoHS
RoHS
Non-RoHS
Non-RoHS
Non-RoHS
Non-RoHS
RoHS
DAC-88GE
–40 to +100ꢀC
–±± to +12±ꢀC
–±± to +12±ꢀC
0 to +70ꢀC
DAC-88GM
DAC-88G/883
DAC-88GC-C
DAC-88GE-C
DAC-88GM-C
DAC-88G-C/883
–40 to +100ꢀC
–±± to +12±ꢀC
–±± to +12±ꢀC
RoHS
RoHS
RoHS
Two’s Complement Coding
DAC-88MC-2
0 to +70ꢀC
–40 to +100ꢀC
–±± to +12±ꢀC
–±± to +12±ꢀC
0 to +70ꢀC
Non-RoHS
Non-RoHS
Non-RoHS
Non-RoHS
RoHS
DDIP
DDIP
DDIP
DDIP
DDIP
DDIP
DDIP
DDIP
SMT
SMT
SMT
SMT
SMT
SMT
SMT
SMT
DAC-88ME-2
DAC-88MM-2
DAC-88-2/883
DAC-88MC-2-C
DAC-88ME-2-C
DAC-88MM-2-C
DAC-88-2-C/883
DAC-88GC-2
–40 to +100ꢀC
–±± to +12±ꢀC
–±± to +12±ꢀC
0 to +70ꢀC
RoHS
RoHS
RoHS
Non-RoHS
Non-RoHS
Non-RoHS
Non-RoHS
RoHS
DAC-88GE-2
–40 to +100ꢀC
–±± to +12±ꢀC
–±± to +12±ꢀC
0 to +70ꢀC
DAC-88GM-2
DAC-88G-2/883
DAC-88GC-2-C
DAC-88GE-2-C
DAC-88GM-2-C
DAC-88G-2-C/883
–40 to +100ꢀC
–±± to +12±ꢀC
–±± to +12±ꢀC
RoHS
RoHS
RoHS
The MIL-STD-883 units are available under DSCC/DLA Drawing Number ±962-90±7001HXA (Solder Dipped)
or ±962-90±7001HXC. Contact DATEL for 883 product specifications
DATEL is a registered trademark of DATEL, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
DATEL, Inc. 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.
ITAR and ISO 9001/14001 REGISTERED
© 2015 DATEL, Inc.
www.datel.com • e-mail: help@datel.com
MDA_DAC-88.A01 Page 6 of 6
相关型号：
©2020 ICPDF网 联系我们和版权申明