Datasheet

LM4041
Improved Precision Micropower
Shunt Voltage Reference
4 _______________________________________________________________________________________
100 10k1k 100k 1M
OUTPUT IMPEDANCE vs. FREQUENCY
LM4041-08
FREQUENCY (Hz)
IMPEDANCE (
Ω
)
1000
0.1
1
10
100
C
1
= 0
I
R
=
C
1
= 1μF
I
R
= 1mA
150μA
10,000
100
10 1k 10k
1000
FREQUENCY (Hz)
100
NOISE vs. FREQUENCY
LM4041-09
I
R
= 200μA
NOISE (nV/
√
Hz)
R
S
= 30kΩ
SEE FIGURE 2
0841216
STARTUP CHARACTERISTICS
LM4041-07
RESPONSE TIME (μs)
5V
V
IN
OV
0V
1.5V
1.0V
V
OUT
O.5V
V
GEN
V
R
(AC-COUPLED)
2V/div
2mV/div
LOAD-TRANSIENT RESPONSE
LM4041-05
10μs/div
I
SHUNT
= 1mA ± 250μA,
R
L
= 10kΩ
SEE FIGURE 1
V
GEN
V
R
2V/div
2mV/div
LOAD-TRANSIENT RESPONSE
LM4041-06
10μs/div
I
SHUNT
= 10mA ± 2.5mA,
R
L
= 1kΩ
SEE FIGURE 1
V
GEN
V
R
(AC-COUPLED)
2V/div
2mV/div
LOAD-TRANSIENT RESPONSE
LM4041-04
10μs/div
I
SHUNT
= 100μA ± 25μA,
R
L
= 100kΩ
SEE FIGURE 1
Typical Operating Characteristics (continued)
(I
R
= 100µA, SC70-3 package, T
A
= +25°C, unless otherwise noted.)
R
S
30kΩ
V
IN
1Hz RATE
V
R
Figure 2. Startup Characteristics Test Circuit
1kΩ
V
B
+
-
I
SHUNT
V
R
R
L
V
GEN
Figure 1. Load-Transient Test Circuit