Datasheet

AD574AS AD574AT AD574AU
Model Min Typ Max Min Typ Max Min Typ Max Units
RESOLUTION 12 12 12 Bits
LINEARITY ERROR @ +25°C ±1 ±1/2 ±1/2 LSB
T
MIN
to T
MAX
±1 ±1 ±1 LSB
DIFFERENTIAL LINEARITY ERROR
(Minimum Resolution for Which No
Missing Codes are Guaranteed)
T
MIN
to T
MAX
11 12 12 Bits
UNIPOLAR OFFSET (Adjustable to Zero) ±2 ±1 ±1 LSB
BIPOLAR OFFSET (Adjustable to Zero) ±4 ±4 ±2 LSB
FULL-SCALE CALIBRATION ERROR
(With Fixed 50 Ω Resistor from REF OUT to REF IN)
(Adjustable to Zero) 0.25 0.25 0.125 % of FS
TEMPERATURE RANGE –55 +125 –55 +125 –55 +125 °C
TEMPERATURE COEFFICIENTS
(Using Internal Reference)
(T
MIN
to T
MAX
)
Unipolar Offset ±2 (5) ±1 (2.5) ±1 (2.5) LSB (ppm/°C)
Bipolar Offset ±4 (10) ±2 (5) ±1 (2.5) LSB (ppm/°C)
Full-Scale Calibration ±20 (50) ±10 (25) ±5 (12.5) LSB (ppm/°C)
POWER SUPPLY REJECTION
Max Change in Full-Scale Calibration
V
CC
= 15 V ± 1.5 V or 12 V ± 0.6 V ±2 ±1 ±1 LSB
V
LOGIC
= 5 V ± 0.5 V ±1/2 ±1/2 ±1/2 LSB
V
EE
= –15 V ± 1.5 V or –12 V ± 0.6 V ±2 ±1 ±1 LSB
ANALOG INPUT
Input Ranges
Bipolar –5 +5 –5 +5 –5 +5 Volts
–10 +10 –10 +10 –10 +10 Volts
Unipolar 0 +10 0 +10 0 +10 Volts
0 +20 0 +20 0 +20 Volts
Input Impedance
10 Volt Span 3 5 7 3 5 7 3 5 7 kΩ
20 Volt Span 6 10 14 6 10 14 6 10 14 kΩ
DIGITAL CHARACTERISTICS
1
(T
MIN
–T
MAX
)
Inputs
2
(CE, CS, R/C, A
0
)
Logic “1” Voltage +2.0 +5.5 +2.0 +5.5 +2.0 +5.5 Volts
Logic “0” Voltage –0.5 +0.8 –0.5 +0.8 –0.5 +0.8 Volts
Current –20 +20 –20 +20 –20 +20 µA
Capacitance 5 5 5 pF
Output (DB11–DB0, STS)
Logic “1” Voltage (I
SOURCE
≤ 500 µA) +2.4 +2.4 +2.4 Volts
Logic “0” Voltage (I
SINK
≤ 1.6 mA) +0.4 +0.4 +0.4 Volts
Leakage (DB11–DB0, High-Z State) –20 +20 –20 +20 –20 +20 µA
Capacitance 5 5 5 pF
POWER SUPPLIES
Operating Range
V
LOGIC
+4.5 +5.5 +4.5 +5.5 +4.5 +5.5 Volts
V
CC
+11.4 +16.5 +11.4 +16.5 +11.4 +16.5 Volts
V
EE
–11.4 –16.5 –11.4 –16.5 –11.4 –16.5 Volts
Operating Current
I
LOGIC
30 40 30 40 30 40 mA
I
CC
25 25 25 mA
I
EE
18 30 18 30 18 30 mA
POWER DISSIPATION 390 725 390 725 390 725 mW
INTERNAL REFERENCE VOLTAGE 9.98 10.0 10.02 9.98 10.0 10.02 9.99 10.0 10.01 Volts
Output Current (Available for External Loads)
3
1.5 1.5 1.5 mA
(External Load Should not Change During Conversion)
PACKAGE OPTION
4
Ceramic (D-28) AD574ASD AD574ATD AD574AUD
NOTES
1
Detailed Timing Specifications appear in the Timing Section.
2
12/8 Input is not TTL-compatible and must be hard wired to V
LOGIC
or Digital Common.
3
The reference should be buffered for operation on ±12 V supplies.
4
D = Ceramic DIP.
Specifications subject to change without notice.
AD574A
REV. B
–3–