AD578/AD579
Parameter
AD578SD9
AD578TD9
RESOLUTION
12 Bits
12 Bits
ANALOG INPUTS
Voltage Ranges
Bipolar
5.0 V, 10 V
0 V to +10 V, 0 V to +20 V
5.0 V, 10 V
0 V to +10 V, 0 V to +20 V
Unipolar
Input Impedance
0 V to +10 V, 5 V
10 V, 0 V to +20 V
5 kΩ
10 kΩ
5 kΩ
10 kΩ
DIGITAL INPUTS
Convert Command1
Clock Input
1 LSTTL Load
1 LSTTL Load
1 LSTTL Load
1 LSTTL Load
TRANSFER CHARACTERISTICS
Gain Error2, 3
0.1% FSR, 0.25% FSR max
0.1% FSR, 0.25% FSR max
0.1% FSR, 0.25% FSR max
1/2 LSB max
0.1% FSR, 0.25% FSR max
0.1% FSR, 0.25% FSR max
0.1% FSR, 0.25% FSR max
1/2 LSB max
Unipolar Offset3
Bipolar Error3, 4
Linearity Error, 25°C
TMIN to TMAX
3/4 LSB max
3/4 LSB max
DIFFERENTIAL LINEARITY ERROR
(Minimum resolution for which no
missing codes are guaranteed)
25°C
12 Bits
12 Bits
12 Bits
12 Bits
TMIN to TMAX
POWER SUPPLY SENSITIVITY
+15 V 10%
–15 V 10%
0.005%/%∆VS max
0.005%/%∆VS max
0.005%/%∆VS max
0.005%/%∆VS max
0.005%/%∆VS max
0.005%/%∆VS max
+5 V 10%
TEMPERATURE COEFFICIENTS
Gain
15 ppm/°C typ
50 ppm/°C max
3 ppm/°C typ
15 ppm/°C max
8 ppm/°C typ
25 ppm/°C max
2 ppm/°C typ
15 ppm/°C typ
30 ppm/°C max
3 ppm/°C typ
10 ppm/°C max
8 ppm/°C typ
20 ppm/°C max
2 ppm/°C typ
Unipolar Offset
Bipolar Offset
Differential Linearity
CONVERSION TIME5, 6, 7 (max)
6.0 µs
4.5 µs
PARALLEL OUTPUTS
Unipolar Code
Bipolar Code
Binary
Binary
Offset Binary/Twos Complement
2 LSTTL Loads
Offset Binary/Twos Complement
2 LSTTL Loads
Output Drive
SERIAL OUTPUTS (NRZ FORMAT)
Unipolar Code
Bipolar Code
Binary/Complementary Binary
Offset Binary/Comp. Offset Binary
2 LSTTL Loads
Binary/Complementary Binary
Offset Binary/Comp. Offset Binary
2 LSTTL Loads
Output Drive
END OF CONVERSION (EOC)
Output Drive
Logic l During Conversion
8 LSTTL Loads
Logic l During Conversion
8 LSTTL Loads
INTERNAL CLOCK7
Output Drive
2 LSTTL Loads
2 LSTTL Loads
INTERNAL REFERENCE
Voltage
Drift
10.000 100 mV
12 ppm/°C, 20 ppm/°C max
1 mA max
10.000 100 mV
12 ppm/°C, 20 ppm/°C max
1 mA max
External Current
POWER SUPPLY REQUIREMENTS8
Range for Rated Accuracy
Supply Current +15 V
–15 V
+4.75 to +5.25 and 13.5 to 16.5
5 mA typ, 8 mA max
22 mA typ, 35 mA max
30 mA typ, 40 mA max
555 mW typ
+4.75 to +5.25 and 13.5 to 16.5
5 mA typ, 8 mA max
22 mA typ, 35 mA max
30 mA typ, 40 mA max
555 mW typ
+5 V
Power Dissipation
TEMPERATURE RANGE
Operating
Storage
–55°C to +125°C
–65°C to +150°C
–55°C to +125°C
–65°C to +150°C
NOTES
1Positive pulse 200 ns wide (min) leading edge (0 to 1) resets outputs. Trailing edge initiates conversion.
2With 50 Ω, 1% fixed resistor in place of gain adjust potentiometer.
3Adjustable to 0.
4With 50 Ω, 1% resistor between REF OUT and BIPOLAR OFFSET (Pins 24 and 26).
5Conversion time is defined as the time between the falling edge of convert start and the falling edge of the EOC.
6Each grade is specified at the conversion speed shown.
7Externally adjustable by a resistor or capacitor (see Figure 6).
8For Z models, order AD578ZJ, AD578ZK, or AD578ZL ( 11.6 V to 16.5 V).
9Available to MIL-STD-883, Level B. See ADI Military Products Databook for detailed specifications.
S
pecifications subject to change without notice.
REV. C
–3–
ADI [ ADI ]
