Datasheet

LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
10
Maxim Integrated
V
IN
V
OUT
LM4040-5.0V
STARTUP CHARACTERISTICS
LM4040-13
0405020 3010 60 70 80 90
RESPONSE TIME (µs)
5V
0V
0V
4V
2V
R
S
= 16kΩ
SEE FIGURE 2
0.1k 10k1k 100k 1M
LM4040-2.5V
OUTPUT IMPEDANCE vs. FREQUENCY
LM4040-14
FREQUENCY (Hz)
IMPEDANCE (Ω)
1000
0.1
1
10
100
I
R
= 150µA
I
R
= 1mA
C
1
= 1µF
C
1
= 0
Typical Operating Characteristics (continued)
(I
R
= 100µA, SC70 package, T
A
= +25°C, unless otherwise noted.)
V
IN
V
OUT
LM4040-2.5V
STARTUP CHARACTERISTICS
LM4040-12
01620812424283236
RESPONSE TIME (µs)
5V
0V
0V
2V
1V
R
S
= 30kΩ
SEE FIGURE 2
1 10010 1k 10k
LM4040-2.5V
NOISE vs. FREQUENCY
LM4040-16
FREQUENCY (Hz)
10,000
100
1000
NOISE (nV/√Hz)
110010 1k 10k
LM4040-5.0V
NOISE vs. FREQUENCY
LM4040-17
FREQUENCY (Hz)
10,000
100
1000
NOISE (nV/√Hz)
0.1k 10k1k 100k 1M
LM4040-5.0V
OUTPUT IMPEDANCE vs. FREQUENCY
LM4040-15
FREQUENCY (Hz)
IMPEDANCE (Ω)
100
0.1
1
10
I
R
= 150µA
I
R
= 1mA
C
1
= 0
C
1
= 1µF
R
S
V
IN
1Hz RATE
50%
DUTY CYCLE
V
R
Figure 2. Startup Characteristics Test Circuit