AD581LH Analog Devices Inc, AD581LH Datasheet - Page 7

• Manufacturer Part Number: AD581LH
• Description: IC PREC VOLT REF 10V TO-5-3
• Manufacturer: Analog Devices Inc

Specifications of AD581LH

• Temperature Coefficient: 5ppm/°C
• Reference Type: Series
• Voltage - Output: 10V
• Tolerance: ±5mV
• Voltage - Input: 12 ~ 30 V
• Number Of Channels: 1
• Current - Quiescent: 1mA
• Current - Output: 10mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: TO-5-3, Metal Can
• Topology: Series
• Input Voltage: 12V To 30V
• Reference Voltage: 10V
• Reference Voltage Tolerance: 5mV
• No. Of Pins: 3
• Operating Temperature Range: 0°C To +70°C
• Fixed / Adjust / Prog: Precision
• Output Voltage (max): 10V
• Reference Voltage Accuracy (max): 5
• Line Regulation: 0.005%/V
• Load Regulation: 500uV/mA
• Input Voltage (max): 40V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 3
• Package Type: TO-5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Cathode: -
• Lead Free Status / Rohs Status: Compliant

The error band which is guaranteed with the AD581 is the
maximum deviation from the initial value at +25°C; this error
band is of more use to a designer than one which simply guarantees
the maximum total change over the entire range (that is, in the
latter definition, all of the changes could occur in the positive
direction). Thus, with a given grade of the AD581, the designer
can easily determine the maximum total error from initial toler-
ance plus temperature variation (for example, for the AD581T, the
initial tolerance is ±10 mV, the temperature error band is ±15 mV,
thus the unit is guaranteed to be 10.000 V ±25 mV from −55°C
to +125°C).
OUTPUT CURRENT CHARACTERISTICS
The AD581 has the capability to either source or sink current
and provide good load regulation in either direction, although
it has better characteristics in the source mode (positive current
into the load). The circuit is protected for shorts to either positive
supply or ground. The output voltage vs. output current charac-
teristics of the device are shown in Figure 6. Source current
is displayed as negative current in the figure; sink current is
positive. Note that the short-circuit current (that is, 0 V output)
is about 28 mA; when shorted to +15 V, the sink current goes to
about 20 mA.
DYNAMIC PERFORMANCE
Many low power instrument manufacturers have been in-
creasingly concerned with the turn-on characteristics of the
components used in their systems. Fast turn-on components often
enable the end user to keep power off when not needed, and yet
respond quickly when the power is turned on for operation.
Figure 7 displays the turn-on characteristic of the AD581. This
characteristic is generated from a cold start operation and repre-
sents the true turn-on waveform after an extended period with
the supplies off. The figure shows both the coarse and fine transient
characteristics of the device; the total settling time to within
±10 mV is about 180 μs, and there is no long thermal tail
appearing after the point.
14
12
10
8
6
4
2
0
Figure 6. Output Voltage vs. Sink and Source Current
+V
T
A
–20
S
= 25°C
= 15V
–15
SOURCE
–10
OUTPUT CURRENT (mA)
–5
0
5
10
SINK
15
20
Rev. C | Page 7 of 12
Figure 8. Spectral Noise Density and Total rms Noise vs. Frequency
1000
100
1000
10
12V
11V
10V
20V
10V
900
800
700
600
500
1
0V
–55
10
–50
–40 –30 –20 –10 0
Figure 9. Quiescent Current vs. Temperature
Figure 7. Output Settling Characteristic
100
NOISE SPECTRAL DENSITY (nV/ Hz)
0
SETTLING TIME (µs)
50
FREQUENCY (Hz)
TEMPERATURE (°C)
10 20 30 40 50 60 70 80 90 100 110 120 125
1k
100 150 200 250
1.5µA/°C
TOTAL NOISE (µV rms) UP
TO SPECIFIED FREQUENCY
10k
100k
10.03V
10.02V
10.01V
10.00V
AD581
1M