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ADDAC85 Просмотр технического описания (PDF) - Analog Devices

Номер в каталогеADDAC85 ADI
Analog Devices ADI
Компоненты ОписаниеComplete Low Cost 12-Bit D/A Converters
ADDAC85 Datasheet PDF : 16 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ADDAC80/ADDAC85/ADDAC87–SPECIFICATIONS (continued)
Model
ADDAC85LD
Min Typ Max
ADDAC85MIL
Min Typ Max
POWER SUPPLY REQUIREMENTS
Rated Voltages
Range
Analog Supplies
Logic Supplies
Supply Drain7
+15 V
–15 V
+5 V8
± 15, 5
± 14.5
+4.5
± 15.5
± 15.5
15
20
25
30
15
20
± 15, 5
± 14.5
+4.5
± 15.5
+15.5
15
20
25
30
15
20
TEMPERATURE RANGE
Specification
Operating
Storage
–25
+85
–55
+125
–55
+125
–55
+125
–55
+125
–55
+125
NOTES
1Least Significant Bit.
2Adjustable to zero with external trim potentiometer.
3FSR means “Full-Scale Range” and is 20 V for the ± 10 V range and 10 V for the ± 5 V range.
4Gain and offset errors adjusted to zero at 25°C.
5CF = 0, see Figure 3a.
6Maximum with no degradation of specification, must be a constant load.
7Including 5 mA load.
85 V supply required only for CCD versions.
Specifications subject to change without notice.
ADDAC87
Min Typ Max
± 15, 5
± 13.5
+4.5
± 16.5
± 16.5
10
20
20
35
10
20
–55
+125
–55
+125
–65
+150
Unit
V
V
V
mA
mA
mA
°C
°C
°C
ABSOLUTE MAXIMUM RATINGS
+VS to Power Ground . . . . . . . . . . . . . . . . . . . . 0 V to +18 V
–VS to Power Ground . . . . . . . . . . . . . . . . . . . . 0 V to –18 V
Digital Inputs (Pins 1 to 12) to Power Ground . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –1.0 V to +7 V
Ref In to Reference Ground . . . . . . . . . . . . . . . . . . . . . ± 12 V
Bipolar Offset to Reference Ground . . . . . . . . . . . . . . ± 12 V
10 V Span R to Reference Ground . . . . . . . . . . . . . . . ± 12 V
20 V Span R to Reference Ground . . . . . . . . . . . . . . . ± 24 V
Ref Out . . . . . . . . . Indefinite Short to Power Ground or +VS
(MSB) BIT 1 1
BIT 2 2
BIT 3 3
BIT 4 4
BIT 5 5
BIT 6 6
BIT 7 7
BIT 8 8
BIT 9 9
BIT 10 10
BIT 11 11
(LSB) BIT 12 12
REF
CONTROL
CIRCUIT
24 VREF OUT
23 GAIN ADJUST
22 +VS
12-BIT
RESISTOR
LADDER
NETWORK
AND
CURRENT
SWITCHES
21 COMMON
5k
20 SUMMING JUNCTION
19 20V RANGE
5k
18 10V RANGE
17 BIPOLAR OFFSET
6.3k
16 REF INPUT
+
15 VOUT
14 VS
ADDAC80 13 NC/+VL*
*NC = CBI VERSIONS
5V CCD VERSIONS
Figure 1. Voltage Model Function Diagram
and Pin Configuration
(MSB) BIT 1 1
BIT 2 2
BIT 3 3
BIT 4 4
BIT 5 5
BIT 6 6
BIT 7 7
BIT 8 8
BIT 9 9
BIT 10 10
BIT 11 11
(LSB) BIT 12 12
12-BIT
RESISTOR
LADDER
NETWORK
AND
CURRENT
SWITCHES
REF
CONTROL
CIRCUIT
24 VREF OUT
23 GAIN ADJUST
22 +VS
21 COMMON
5k
20
2k
19
5k18
17
6.3k
16
SCALING NETWORK
SCALING NETWORK
SCALING NETWORK
BIPOLAR OFFSET
REF INPUT
*NC = CBI VERSIONS
5V CCD VERSIONS
15 IOUT
14 VS
13 NC/+VL*
Figure 2. Current Model Functional Diagram
and Pin Configuration
–6–
REV. B
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PRODUCT DESCRIPTION
The ADDAC80 Series is a family of low cost 12-bit digital-to-analog converters with both a high stability voltage reference and output amplifier combined on a single monolithic chip. The ADDAC80 Series is recommended for all low cost 12-bit D/A converter applications where reliability and cost are of paramount importance.
Advanced circuit design and precision processing techniques result in significant performance advantages over conventional DAC80 devices. Innovative circuit design reduces the total power consumption to 300 mW, which not only improves reliability, but also improves long term stability.

FEATURES
   Single Chip Construction
   On-Board Output Amplifier
   Low Power Dissipation: 300 mW
   Monotonicity Guaranteed over Temperature
   Guaranteed for Operation with 12 V Supplies
   Improved Replacement for Standard DAC80, DAC800
      Hl-5680
   High Stability, High Current Output
      Buried Zener Reference
   Laser Trimmed to High Accuracy
      1/2 LSB Max Nonlinearity
   Low Cost Plastic Packaging

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