Datasheet
LT1818/LT1819
6
18189fb
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Temperature
Input Common Mode Range
vs Supply Current
Input Bias Current vs Common
Mode Voltage
Input Bias Current vs Temperature Input Noise Spectral Density Open-Loop Gain vs Resistive Load
ELECTRICAL CHARACTERISTICS
Note 5: With ±5V supplies, slew rate is tested in a closed-loop gain of –1
by measuring the rise time of the output from –2V to 2V with an output
step from –3V to 3V. With single 5V supplies, slew rate is tested in a
closed-loop gain of –1 by measuring the rise time of the output from 1.5V
to 3.5V with an output step from 1V to 4V. Falling edge slew rate is not
production tested, but is designed, characterized and expected to be within
10% of the rising edge slew rate.
Note 6: Full-power bandwidth is calculated from the slew rate:
FPBW = SR/2πV
P
Note 7: This parameter is not 100% tested.
Note 8: The LT1818C/LT1818I and LT1819C/LT1819I are guaranteed
functional over the operating temperature range of –40°C to 85°C.
Note 9: The LT1818C/LT1819C are guaranteed to meet specifi ed
performance from 0°C to 70°C and is designed, characterized and
expected to meet the extended temperature limits, but is not tested
at –40°C and 85°C. The LT1818I/LT1819I are guaranteed to meet the
extended temperature limits.
Note 10: Thermal resistance (θ
JA
) varies with the amount of PC board
metal connected to the package. The specifi ed values are for short
traces connected to the leads. If desired, the thermal resistance can be
signifi cantly reduced by connecting the V
–
pin to a large metal area.
TEMPERATURE (°C)
–50 –25
0
SUPPLY CURRENT (mA)
4
12
10
0
50
75
18189 G01
2
8
6
25
100
125
V
S
= ±5V
V
S
= ±2.5V
PER AMPLIFIER
SUPPLY VOLTAGE (±V)
0
V
–
INPUT COMMON MODE RANGE (V)
1.0
1.5
2.0
V
+
–2.0
–1.5
2
4
5
18189 G02
0.5
–1.0
–0.5
1
3
6
7
T
A
= 25°C
$V
OS
< 1mV
INPUT COMMON MODE VOLTAGE (V)
–5
INPUT BIAS CURRENT (μA)
T
A
= 25°C
V
S
= ±5V
5
18189 G03
–2.5
0
2.5
2
0
–2
–4
–6
–8
TEMPERATURE (°C)
–50
–1.2
–0.8
0
25 75
18189 G04
–1.6
–2.0
–25 0
50 100 125
–2.4
–2.8
–0.4
INPUT BIAS CURRENT (μA)
V
S
= ±5V
V
S
= ±2.5V
V
CM
= 0V
FREQUENCY (Hz)
10 100
1
10
i
n
100
0.1
1
10
1k 10k 100k
18189 G05
T
A
= 25°C
V
S
= ±5V
A
V
= 101
R
S
= 10k
e
n
INPUT VOLTAGE NOISE (nV/√Hz)
INPUT CURRENT NOISE (pA/√Hz)
LOAD RESISTANCE (Ω)
100
OPEN-LOOP GAIN (dB)
80
77
74
71
68
65
62
1k 10k
18189 G06
T
A
= 25°C
V
S
= ±5V
V
S
= ±2.5V