Analog Devices AD558JD, AD558TD, AD558SD, AD558KN, AD558KD Datasheet
CONTROL
AMP
BAND -
GAP
REFERENCE
AD558
OUTPUT
AMP
8-BIT VOLTAGE-SWITCHING
D-TO-A CONVERTER
MSB
I2L LATCHES
I2L
CONTROL
LOGIC
LSB
V
OUT
V
OUT
SENSE A
V
OUT
SELECT
GND
+V
CC
MSB
GND CS CE
LSB
CONTROL
INPUTS
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DIGITAL INPUT DATA (BUS)
DACPORT Low Cost, Complete
a
FEATURES
Complete 8-Bit DAC
Voltage Output–2 Calibrated Ranges
Internal Precision Bandgap Reference
Single-Supply Operation: +5 V to +15 V
Full Microprocessor Interface
Fast: 1 ms Voltage Settling to 61/2 LSB
Low Power: 75 mW
No User Trims
Guaranteed Monotonic Over Temperature
MIN
to T
MAX
2
L), an extremely dense
All Errors Specified T
Small 16-Pin DIP and 20-Pin PLCC Packages
Single Laser-Wafer-Trimmed Chip for Hybrids
Low Cost
MIL-STD-883 Compliant Versions Available
PRODUCT DESCRIPTION
The AD558 DACPORT® is a complete voltage-output 8-bit
digital-to-analog converter, including output amplifier, full
microprocessor interface and precision voltage reference on a
single monolithic chip. No external components or trims are
required to interface, with full accuracy, an 8-bit data bus to an
analog system.
The performance and versatility of the DACPORT is a result of
several recently-developed monolithic bipolar technologies. The
complete microprocessor interface and control logic is implemented with integrated injection logic (I
and low power logic structure that is process-compatible with
linear bipolar fabrication. The internal precision voltage reference
is the patented low voltage bandgap circuit which permits fullaccuracy performance on a single +5 V to +15 V power supply.
Thin-film silicon-chromium resistors provide the stability required for guaranteed monotonic operation over the entire operating temperature range (all grades), while recent advances in
laser-wafer-trimming of these thin-film resistors permit absolute
calibration at the factory to within ± 1 LSB; thus no user-trims
for gain or offset are required. A new circuit design provides
voltage settling to ±1/2 LSB for a full-scale step in 800 ns.
The AD558 is available in four performance grades. The AD558J
and K are specified for use over the 0°C to +70°C temperature
range, while the AD558S and T grades are specified for –55°C
to +125°C operation. The “J” and “K” grades are available
either in 16-pin plastic (N) or hermetic ceramic (D) DIPS.
They are also available in 20-pin JEDEC standard PLCC packages. The “S” and “T” grades are available in the 16-pin hermetic ceramic DIP package.
*Protected by U.S. Patent Nos. 3,887,863; 3,685,045; 4,323,795; Patents
Pending.
DACPORT is a registered trademark of Analog Devices, Inc.
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
µP-Compatible 8-Bit DAC
AD558*
FUNCTIONAL BLOCK DIAGRAM
PRODUCT HIGHLIGHTS
1. The 8-bit I2L input register and fully microprocessorcompatible control logic allow the AD558 to be directly
connected to 8- or 16-bit data buses and operated with
standard control signals. The latch may be disabled for
direct DAC interfacing.
2. The laser-trimmed on-chip SiCr thin-film resistors are
calibrated for absolute accuracy and linearity at the factory.
Therefore, no user trims are necessary for full rated accuracy
over the operating temperature range.
3. The inclusion of a precision low voltage bandgap reference
eliminates the need to specify and apply a separate reference source.
4. The voltage switching structure of the AD558 DAC section
along with a high speed output amplifier and laser trimmed
resistors give the user a choice of 0 V to +2.56 V or 0 V to
+10 V output ranges, selectable by pin-strapping. Circuitry is
internally compensated for minimum settling time on both
ranges; typically settling to ± 1/2 LSB for a full-scale 2.55 volt
step in 800 ns.
5. The AD558 is designed and specified to operate from a
single +4.5 V to +16.5 V power supply.
6. Low digital input currents, 100 µA max, minimize bus load-
ing. Input thresholds are TTL/low voltage CMOS compatible over the entire operating V
7. All AD558 grades are available in chip form with guaranteed
specifications from +25°C to T
visual inspection is standard on Analog Devices bipolar
chips. Contact the factory for additional chip information.
8. The AD558 is available in versions compliant with MILSTD-883. Refer to Analog Devices Military Products Databook or current AD558/883B data sheet for detailed
specifications.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700 Fax: 617/326-8703
range.
CC
. MIL-STD-883, Class B
MAX
AD558–SPECIFICATIONS
Model AD558J AD558K AD558S
(@ TA = +258C, VCC = +5 V to +15 V unless otherwise noted)
1
AD558T
1
Min Typ Max Min Typ Max Min Typ Max Min Typ Max Units
RESOLUTION 8 8 8 8 Bits
RELATIVE ACCURACY
2
0°C to +70°C ±1/2 ±1/4 ±1/2 ±1/4 LSB
–55°C to +125°C ±3/4 ±3/8 LSB
OUTPUT
3
Ranges
0 to +2.56 0 to +2.56 0 to +2.56 0 to +2.56 V
0 to +10 0 to +10 0 to +10 0 to +10 V
Current Source +5 +5 +5 +5 mA
Sink Internal Passive Internal Passive Internal Passive Internal Passive
Pull-Down to Ground
OUTPUT SETTLING TIME
0 to 2.56 Volt Range 0.8 1.5 0.8 1.5 0.8 1.5 0.8 1.5 µs
0 to 10 Volt Range
FULL-SCALE ACCURACY
5
4
6
2.0 3.0 2.0 3.0 2.0 3.0 2.0 3.0 µs
4
Pull-Down to Ground Pull-Down to Ground Pull-Down to Ground
@ 25°C 61.5 60.5 61.5 60.5 LSB
T
MIN
to T
MAX
62.5 61 62.5 61 LSB
ZERO ERROR
@ 25°C 61 61/2 61 61/2 LSB
T
to T
MIN
MAX
MONOTONICITY
T
to T
MIN
MAX
7
Guaranteed Guaranteed Guaranteed Guaranteed
62 61 62 61 LSB
DIGITAL INPUTS
to T
T
MIN
Input Current ±100 ±100 ±100 100 µA
MAX
Data Inputs, Voltage
Bit On-Logic “1” 2.0 2.0 2.0 2.0 V
Bit On-Logic “0” 0 0.8 0 0 0 V
Control Inputs, Voltage
On-Logic “1” 2.0 2.0 2.0 2.0 V
On-Logic “0” 0 0.8 0 0.8 0 0.8 0 0.8 V
Input Capacitance 4 4 4 4 pF
8
TIMING
tW, Strobe Pulse Width 200 200 200 200 ns
to T
T
MIN
MIN
MIN
to T
to T
MAX
MAX
MAX
Data Hold Time 10 10 10 10 ns
t
DH
T
Data Set-Up Time 200 200 200 200 ns
t
DS
T
270 270 270 270 ns
10 10 10 10 ns
270 270 270 270 ns
POWER SUPPLY
Operating Voltage Range (V
2.56 Volt Range +4.5 +16.5 +4.5 +16.5 +4.5 +16.5 +4.5 +16.5 V
)
CC
10 Volt Range +11.4 +16.5 +11.4 +16.5 +11.4 +16.5 +11.4 +16.5 V
Current (I
Rejection Ratio 0.03 0.03 0.03 0.03 %/%
POWER DISSIPATION, V
)1525 15 25 15 25 15 25 mA
CC
= 5 V 75 125 75 125 75 125 75 125 mW
CC
VCC = 15 V 225 375 225 375 225 375 225 375 mW
OPERATING TEMPERATURE RANGE 0 +70 0 +70 –55 +125 –55 +125 °C
NOTES
1
The AD558 S & T grades are available processed and screened lo MIL-STD-883 Class B. Consult Analog Devices’ Military Databook for details.
2
Relative Accuracy is defined as the deviation of the code transition points from the ideal transfer point on a straight line from the offset to the full scale of the device.
See “Measuring Offset Error”.
3
Operation of the 0 volt to 10 volt output range requires a minimum supply voltage of +11.4 volts.
4
Passive pull-down resistance is 2 kΩ for 2.56 volt range, 10 kΩ for 10 volt range.
5
Settling time is specified for a positive-going full-scale step to ± 1/2 LSB. Negative-going steps to zero are slower, but can be improved with an external pull-down.
6
The full range output voltage for the 2.56 range is 2.55 V and is guaranteed with a +5 V supply, for the 10 V range, it is 9.960 V guaranteed with a +15 V supply.
7
A monotonic converter has a maximum differential linearity error of ± 1 LSB.
8
See Figure 7.
Specifications shown in boldface are tested on all production units at final electrical test.
Specifications subject to change without notice.
–2–
REV. A
ABSOLUTE MAXIMUM RATINGS*
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
AD558
TOP VIEW
(Not to Scale)
V
OUT
V
OUT
SENSE
V
OUT
SELECT
GND
GND
+V
CC
CS
(LSB) DB0
DB1
DB2
DB3
DB4
DB5
DB6
(MSB) DB7
CE
VCC to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to +18 V
Digital Inputs (Pins 1–10) . . . . . . . . . . . . . . . . . .0 V to +7.0 V
V
. . . . . . . . . . . . . . . . . . . . . . . Indefinite Short to Ground
OUT
Momentary Short to V
CC
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . .450 mW
Storage Temperature Range
N/P (Plastic) Packages . . . . . . . . . . . . . . . . –25°C to +100°C
D (Ceramic) Package . . . . . . . . . . . . . . . . .–55°C to +150°C
Lead Temperature (soldering, 10 sec) . . . . . . . . . . . . . +300°C
Thermal Resistance
Junction to Ambient/Junction to Case
D (Ceramic) Package . . . . . . . . . . . . . . 100°C/W/30°C/W
N/P (Plastic) Packages . . . . . . . . . . . . . 140°C/W/55°C/W
*Stresses greater than those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the
operational section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
AD558 METALIZATION PHOTOGRAPH
Dimensions shown in inches and (mm).
Figure 1a. AD558 Pin Configuration (DIP)
AD558
Figure 1a. AD558 Pin Configuration (DIP)
SENSE
OUT
OUT
NC
V
DB0 (LSB)
1
20 19
NC
CE
(MSB) DB7
V
V
SELECT
18
OUT
GND
17
16
NC
15
GND
+V
14
CC
CS
NC = NO CONNECT
DB1
2
3
4
DB2
5
DB3
NC
DB4
DB5
6
7
8
AD558
TOP VIEW
(Not to Scale)
9
10 11 12 13
DB6
Figure 1b. AD558 Pin Configuration (PLCC and LCC)
REV. A
ORDERING GUIDE
Relative Accuracy Full-Scale
Error Max Error, Max Package
MIN
to T
MAX
T
to T
MIN
MAX
Option
2
Model
1
Temperature T
AD558JN 0°C to +70°C ±1/2 LSB ±2.5 LSB Plastic (N-16)
AD558JP 0°C to +70°C ±1/2 LSB ±2.5 LSB PLCC (P-20A)
AD558JD 0°C to +70°C ±1/2 LSB ±2.5 LSB TO-116 (D-16)
AD558KN 0°C to +70°C ±1/4 LSB ±1 LSB Plastic (N-16)
AD558KP 0°C to +70°C ±1/4 LSB ±1 LSB PLCC (P-20A)
AD558KD 0°C to +70°C ±1/4 LSB ±1 LSB TO-116 (D-16)
AD558SD –55°C to +125°C ±3/4 LSB ±2.5 LSB TO-116 (D-16)
AD558TD –55°C to +125°C ±3/8 LSB ±1 LSB TO-116 (D-16)
NOTES
1
For details on grade and package offerings screened in accordance with MIL-STD-883, refer to the Analog Devices
Military Products Databook or current AD558/883B data sheet.
2
D = Ceramic DIP; N = Plastic DIP; P = Plastic Leaded Chip Carrier.
–3–
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