ISL60002DIH312Z Intersil, ISL60002DIH312Z Datasheet - Page 29

• Manufacturer Part Number: ISL60002DIH312Z
• Description: REF 1.25V LOW POWER FGA, SOT-23-3
• Manufacturer: Intersil

Specifications of ISL60002DIH312Z

• Topology: Series
• Input Voltage: 2.7V To 5.5V
• Reference Voltage Tolerance: 5mV
• Voltage Reference Case Style: SOT-23
• No. Of Pins: 3
• Operating Temperature Range: -40°C
• Temperature Coefficient: 20ppm/°C
• Reference Voltage: 1.25V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Turn-On Time
The ISL60002 devices have ultra-low supply current and
thus the time to bias up internal circuitry to final values will
be longer than with higher power references. Normal turn-on
time is typically 7ms. This is shown in Figure 102. Since
devices can vary in supply current down to >300nA, turn-on
time can last up to about 12ms. Care should be taken in
system design to include this delay before measurements or
conversions are started.
V
IN
= 3.0V
250
200
150
100
300
400
350
50
0
0.1µF
1
10µF
FIGURE 100. NOISE REDUCTION
CL = 0
CL = 0.001µF
CL = 0.1µF
CL = 0.01µF & 10µF + 2kΩ
10
FIGURE 101.
ISL60002
100
GND
V
29
IN
V
O
1k
0.01µF
10k
100k
2kΩ
10µF
ISL60002
Temperature Coefficient
The limits stated for temperature coefficient (tempco) are
governed by the method of measurement. The
overwhelming standard for specifying the temperature drift of
a reference is to measure the reference voltage at two
temperatures, take the total variation, (V
divide by the temperature extremes of measurement
(T
reference voltage (at T = 25°C) and multiplied by 10
ppm/°C. This is the “Box” method for specifying temperature
coefficient.
HIGH
3.5
3.0
2.5
2.0
1.5
1.0
0.5
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
-1
-1
– T
LOW
580nA
580nA
1
1
). The result is divided by the nominal
V
FIGURE 102. TURN-ON TIME
IN
380nA
V
380nA
IN
280nA
3
280nA
3
TIME (ms)
TIME (ms)
5
5
HIGH
7
7
– V
LOW
August 1, 2006
9
9
6
to yield
FN8082.7
), and
11
11