Datasheet

AD558–SPECIFICATIONS
Model AD558J AD558K AD558S
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
Ranges
3
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
4
Pull-Down to Ground Pull-Down to Ground Pull-Down to Ground
OUTPUT SETTLING TIME
5
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
4
2.0 3.0 2.0 3.0 2.0 3.0 2.0 3.0 µs
FULL-SCALE ACCURACY
6
@ 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
MIN
to T
MAX
62 61 62 61 LSB
MONOTONICITY
7
T
MIN
to T
MAX
Guaranteed Guaranteed Guaranteed Guaranteed
DIGITAL INPUTS
T
MIN
to T
MAX
Input Current ±100 ±100 ±100 100 µA
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
TIMING
8
t
W
, Strobe Pulse Width 200 200 200 200 ns
T
MIN
to T
MAX
270 270 270 270 ns
t
DH
Data Hold Time 10 10 10 10 ns
T
MIN
to T
MAX
10 10 10 10 ns
t
DS
Data Set-Up Time 200 200 200 200 ns
T
MIN
to T
MAX
270 270 270 270 ns
POWER SUPPLY
Operating Voltage Range (V
CC
)
2.56 Volt Range +4.5 +16.5 +4.5 +16.5 +4.5 +16.5 +4.5 +16.5 V
10 Volt Range +11.4 +16.5 +11.4 +16.5 +11.4 +16.5 +11.4 +16.5 V
Current (I
CC
)1525 15 25 15 25 15 25 mA
Rejection Ratio 0.03 0.03 0.03 0.03 %/%
POWER DISSIPATION, V
CC
= 5 V 75 125 75 125 75 125 75 125 mW
V
CC
= 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.
(@ T
A
= +258C, V
CC
= +5 V to +15 V unless otherwise noted)
REV. A
–2–