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參數(shù)資料
| 型號(hào)： | ISL60007 |
| 廠商： | Intersil Corporation |
| 英文描述： | Precision 1.25V and 2.50V, 1.08?-Watt, High Precision FGA Voltage References |
| 中文描述： | 精密1.25V和2.50V，1.08？瓦，F(xiàn)GA中高精度電壓基準(zhǔn) |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大小： | 469K |
| 代理商： | ISL60007 |
9
FN8087.1
May 5, 2005
Turn-On Time
The ISL60007 devices operate with ultra-low supply current
and thus the time to bias up internal circuitry to final values
will be longer than with references that require higher
current. Normal turn-on time is typically 4ms. This is shown
in Figure 30. Since devices can vary in supply current down
to 250nA, turn-on time can last up to about 6ms. Care
should be taken in system design to include this delay before
measurements or conversions are started.
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
HIGH
- V
LOW
), and
divide by the temperature extremes of measurement
(T
HIGH
- T
LOW
). The result is divided by the nominal
reference voltage (at T = 25°C) and multiplied by 10
6
to yield
ppm/°C. This is the “Box” method for specifying temperature
coefficient.
C
L
= 0
400
350
300
250
200
150
100
50
0
1
10
100
1000
10000
100000
N
P
)
FIGURE 28. NOISE REDUCTION
C
L
= 0.001μF
C
L
= 0.01μF
& 10μF + 2k
C
L
= 0.1μF
V
IN
= 3.0V
V
IN
V
O
GND
ISL60007
0.01μF
10μF
2k
0.1μF
10μF
FIGURE 29.
0
0.5
1
1.5
2
2.5
3
3.5
0
2
4
6
8
10
12
TIME (ms)
V
I
O
400nA
V
IN
570nA
250nA
FIGURE 30. TURN-ON TIME (+25°C)
Typical Application Circuits
FIGURE 31. PRECISION 2.5V, 50mA REFERENCE
V
IN
= 5V
2N2905
2.5V/50mA
0.001μF
V
IN
V
OUT
GND
ISL60007
R = 200
ISL60007
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| ISL60007_06 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Precision 2.50V, 1.08U-Watt, High Precision FGA Voltage References |
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| ISL60007BIB812 | 制造商:Intersil Corporation 功能描述:1.25V REFERENCE, I/A=+/-0.5MV, T/C=5PPM, -40 TO +85 DEGC - Rail/Tube |
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